Major metadata refactoring and enhancement

* Expose all fields of recent protobufs

 * Add support for user-scoped playlists, user root playlists and
   playlist annotations

 * Convert messages with the Rust type system

 * Attempt to adhere to embargos (tracks and episodes scheduled for
   future release)

 * Return `Result`s with meaningful errors instead of panicking on
   `unwrap`s

 * Add foundation for future playlist editing

 * Up version in connection handshake to get all version-gated features

Cargo.lock

@@ -1350,11 +1350,13 @@ dependencies = [
  "async-trait",
  "byteorder",
  "bytes",
+ "chrono",
  "librespot-core",
  "librespot-protocol",
  "log",
  "protobuf",
  "thiserror",
+ "uuid",
 ]
 
 [[package]]

connect/src/spirc.rs

@@ -1,3 +1,4 @@
+use std::convert::TryFrom;
 use std::future::Future;
 use std::pin::Pin;
 use std::time::{SystemTime, UNIX_EPOCH};
@@ -6,7 +7,7 @@ use crate::context::StationContext;
 use crate::core::config::ConnectConfig;
 use crate::core::mercury::{MercuryError, MercurySender};
 use crate::core::session::Session;
-use crate::core::spotify_id::{SpotifyAudioType, SpotifyId, SpotifyIdError};
+use crate::core::spotify_id::SpotifyId;
 use crate::core::util::SeqGenerator;
 use crate::core::version;
 use crate::playback::mixer::Mixer;
@@ -1099,15 +1100,6 @@ impl SpircTask {
         }
     }
 
-    // should this be a method of SpotifyId directly?
-    fn get_spotify_id_for_track(&self, track_ref: &TrackRef) -> Result<SpotifyId, SpotifyIdError> {
-        SpotifyId::from_raw(track_ref.get_gid()).or_else(|_| {
-            let uri = track_ref.get_uri();
-            debug!("Malformed or no gid, attempting to parse URI <{}>", uri);
-            SpotifyId::from_uri(uri)
-        })
-    }
-
     // Helper to find corresponding index(s) for track_id
     fn get_track_index_for_spotify_id(
         &self,
@@ -1146,11 +1138,8 @@ impl SpircTask {
         // E.g - context based frames sometimes contain tracks with <spotify:meta:page:>
 
         let mut track_ref = self.state.get_track()[new_playlist_index].clone();
-        let mut track_id = self.get_spotify_id_for_track(&track_ref);
+        let mut track_id = SpotifyId::try_from(&track_ref);
-        while self.track_ref_is_unavailable(&track_ref)
+        while self.track_ref_is_unavailable(&track_ref) || track_id.is_err() {
-            || track_id.is_err()
-            || track_id.unwrap().audio_type == SpotifyAudioType::NonPlayable
-        {
             warn!(
                 "Skipping track <{:?}> at position [{}] of {}",
                 track_ref, new_playlist_index, tracks_len
@@ -1166,7 +1155,7 @@ impl SpircTask {
                 return None;
             }
             track_ref = self.state.get_track()[new_playlist_index].clone();
-            track_id = self.get_spotify_id_for_track(&track_ref);
+            track_id = SpotifyId::try_from(&track_ref);
         }
 
         match track_id {

core/src/connection/handshake.rs

@@ -49,7 +49,7 @@ where
     packet
         .mut_build_info()
         .set_platform(protocol::keyexchange::Platform::PLATFORM_LINUX_X86);
-    packet.mut_build_info().set_version(109800078);
+    packet.mut_build_info().set_version(999999999);
     packet
         .mut_cryptosuites_supported()
         .push(protocol::keyexchange::Cryptosuite::CRYPTO_SUITE_SHANNON);

core/src/spclient.rs

@@ -227,7 +227,6 @@ impl SpClient {
         self.get_metadata("show", show_id).await
     }
 
-    // TODO: Not working at the moment, always returns 400.
     pub async fn get_lyrics(&self, track_id: SpotifyId, image_id: FileId) -> SpClientResult {
         let endpoint = format!(
             "/color-lyrics/v2/track/{}/image/spotify:image:{}",

core/src/spotify_id.rs

@@ -1,31 +1,46 @@
-#![allow(clippy::wrong_self_convention)]
+use librespot_protocol as protocol;
 
-use std::convert::TryInto;
+use thiserror::Error;
+
+use std::convert::{TryFrom, TryInto};
 use std::fmt;
+use std::ops::Deref;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub enum SpotifyAudioType {
+pub enum SpotifyItemType {
+    Album,
+    Artist,
+    Episode,
+    Playlist,
+    Show,
     Track,
-    Podcast,
+    Unknown,
-    NonPlayable,
 }
 
-impl From<&str> for SpotifyAudioType {
+impl From<&str> for SpotifyItemType {
     fn from(v: &str) -> Self {
         match v {
-            "track" => SpotifyAudioType::Track,
+            "album" => Self::Album,
-            "episode" => SpotifyAudioType::Podcast,
+            "artist" => Self::Artist,
-            _ => SpotifyAudioType::NonPlayable,
+            "episode" => Self::Episode,
+            "playlist" => Self::Playlist,
+            "show" => Self::Show,
+            "track" => Self::Track,
+            _ => Self::Unknown,
         }
     }
 }
 
-impl From<SpotifyAudioType> for &str {
+impl From<SpotifyItemType> for &str {
-    fn from(audio_type: SpotifyAudioType) -> &'static str {
+    fn from(item_type: SpotifyItemType) -> &'static str {
-        match audio_type {
+        match item_type {
-            SpotifyAudioType::Track => "track",
+            SpotifyItemType::Album => "album",
-            SpotifyAudioType::Podcast => "episode",
+            SpotifyItemType::Artist => "artist",
-            SpotifyAudioType::NonPlayable => "unknown",
+            SpotifyItemType::Episode => "episode",
+            SpotifyItemType::Playlist => "playlist",
+            SpotifyItemType::Show => "show",
+            SpotifyItemType::Track => "track",
+            _ => "unknown",
         }
     }
 }
@@ -33,11 +48,21 @@ impl From<SpotifyAudioType> for &str {
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct SpotifyId {
     pub id: u128,
-    pub audio_type: SpotifyAudioType,
+    pub item_type: SpotifyItemType,
 }
 
-#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Error, Clone, Copy, PartialEq, Eq)]
-pub struct SpotifyIdError;
+pub enum SpotifyIdError {
+    #[error("ID cannot be parsed")]
+    InvalidId,
+    #[error("not a valid Spotify URI")]
+    InvalidFormat,
+    #[error("URI does not belong to Spotify")]
+    InvalidRoot,
+}
+
+pub type SpotifyIdResult = Result<SpotifyId, SpotifyIdError>;
+pub type NamedSpotifyIdResult = Result<NamedSpotifyId, SpotifyIdError>;
 
 const BASE62_DIGITS: &[u8; 62] = b"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
 const BASE16_DIGITS: &[u8; 16] = b"0123456789abcdef";
@@ -47,11 +72,12 @@ impl SpotifyId {
     const SIZE_BASE16: usize = 32;
     const SIZE_BASE62: usize = 22;
 
-    fn track(n: u128) -> SpotifyId {
+    /// Returns whether this `SpotifyId` is for a playable audio item, if known.
-        SpotifyId {
+    pub fn is_playable(&self) -> bool {
-            id: n,
+        return matches!(
-            audio_type: SpotifyAudioType::Track,
+            self.item_type,
-        }
+            SpotifyItemType::Episode | SpotifyItemType::Track
+        );
     }
 
     /// Parses a base16 (hex) encoded [Spotify ID] into a `SpotifyId`.
@@ -59,29 +85,32 @@ impl SpotifyId {
     /// `src` is expected to be 32 bytes long and encoded using valid characters.
     ///
     /// [Spotify ID]: https://developer.spotify.com/documentation/web-api/#spotify-uris-and-ids
-    pub fn from_base16(src: &str) -> Result<SpotifyId, SpotifyIdError> {
+    pub fn from_base16(src: &str) -> SpotifyIdResult {
         let mut dst: u128 = 0;
 
         for c in src.as_bytes() {
             let p = match c {
                 b'0'..=b'9' => c - b'0',
                 b'a'..=b'f' => c - b'a' + 10,
-                _ => return Err(SpotifyIdError),
+                _ => return Err(SpotifyIdError::InvalidId),
             } as u128;
 
             dst <<= 4;
             dst += p;
         }
 
-        Ok(SpotifyId::track(dst))
+        Ok(Self {
+            id: dst,
+            item_type: SpotifyItemType::Unknown,
+        })
     }
 
-    /// Parses a base62 encoded [Spotify ID] into a `SpotifyId`.
+    /// Parses a base62 encoded [Spotify ID] into a `u128`.
     ///
     /// `src` is expected to be 22 bytes long and encoded using valid characters.
     ///
     /// [Spotify ID]: https://developer.spotify.com/documentation/web-api/#spotify-uris-and-ids
-    pub fn from_base62(src: &str) -> Result<SpotifyId, SpotifyIdError> {
+    pub fn from_base62(src: &str) -> SpotifyIdResult {
         let mut dst: u128 = 0;
 
         for c in src.as_bytes() {
@@ -89,23 +118,29 @@ impl SpotifyId {
                 b'0'..=b'9' => c - b'0',
                 b'a'..=b'z' => c - b'a' + 10,
                 b'A'..=b'Z' => c - b'A' + 36,
-                _ => return Err(SpotifyIdError),
+                _ => return Err(SpotifyIdError::InvalidId),
             } as u128;
 
             dst *= 62;
             dst += p;
         }
 
-        Ok(SpotifyId::track(dst))
+        Ok(Self {
+            id: dst,
+            item_type: SpotifyItemType::Unknown,
+        })
     }
 
-    /// Creates a `SpotifyId` from a copy of `SpotifyId::SIZE` (16) bytes in big-endian order.
+    /// Creates a `u128` from a copy of `SpotifyId::SIZE` (16) bytes in big-endian order.
     ///
-    /// The resulting `SpotifyId` will default to a `SpotifyAudioType::TRACK`.
+    /// The resulting `SpotifyId` will default to a `SpotifyItemType::Unknown`.
-    pub fn from_raw(src: &[u8]) -> Result<SpotifyId, SpotifyIdError> {
+    pub fn from_raw(src: &[u8]) -> SpotifyIdResult {
         match src.try_into() {
-            Ok(dst) => Ok(SpotifyId::track(u128::from_be_bytes(dst))),
+            Ok(dst) => Ok(Self {
-            Err(_) => Err(SpotifyIdError),
+                id: u128::from_be_bytes(dst),
+                item_type: SpotifyItemType::Unknown,
+            }),
+            Err(_) => Err(SpotifyIdError::InvalidId),
         }
     }
 
@@ -114,30 +149,37 @@ impl SpotifyId {
     /// `uri` is expected to be in the canonical form `spotify:{type}:{id}`, where `{type}`
     /// can be arbitrary while `{id}` is a 22-character long, base62 encoded Spotify ID.
     ///
+    /// Note that this should not be used for playlists, which have the form of
+    /// `spotify:user:{owner_username}:playlist:{id}`.
+    ///
     /// [Spotify URI]: https://developer.spotify.com/documentation/web-api/#spotify-uris-and-ids
-    pub fn from_uri(src: &str) -> Result<SpotifyId, SpotifyIdError> {
+    pub fn from_uri(src: &str) -> SpotifyIdResult {
-        let src = src.strip_prefix("spotify:").ok_or(SpotifyIdError)?;
+        let mut uri_parts: Vec<&str> = src.split(':').collect();
 
-        if src.len() <= SpotifyId::SIZE_BASE62 {
+        // At minimum, should be `spotify:{type}:{id}`
-            return Err(SpotifyIdError);
+        if uri_parts.len() < 3 {
+            return Err(SpotifyIdError::InvalidFormat);
         }
 
-        let colon_index = src.len() - SpotifyId::SIZE_BASE62 - 1;
+        if uri_parts[0] != "spotify" {
-
+            return Err(SpotifyIdError::InvalidRoot);
-        if src.as_bytes()[colon_index] != b':' {
-            return Err(SpotifyIdError);
         }
 
-        let mut id = SpotifyId::from_base62(&src[colon_index + 1..])?;
+        let id = uri_parts.pop().unwrap();
-        id.audio_type = src[..colon_index].into();
+        if id.len() != Self::SIZE_BASE62 {
+            return Err(SpotifyIdError::InvalidId);
+        }
 
-        Ok(id)
+        Ok(Self {
+            item_type: uri_parts.pop().unwrap().into(),
+            ..Self::from_base62(id)?
+        })
     }
 
     /// Returns the `SpotifyId` as a base16 (hex) encoded, `SpotifyId::SIZE_BASE16` (32)
     /// character long `String`.
     pub fn to_base16(&self) -> String {
-        to_base16(&self.to_raw(), &mut [0u8; SpotifyId::SIZE_BASE16])
+        to_base16(&self.to_raw(), &mut [0u8; Self::SIZE_BASE16])
     }
 
     /// Returns the `SpotifyId` as a [canonically] base62 encoded, `SpotifyId::SIZE_BASE62` (22)
@@ -190,7 +232,7 @@ impl SpotifyId {
 
     /// Returns a copy of the `SpotifyId` as an array of `SpotifyId::SIZE` (16) bytes in
     /// big-endian order.
-    pub fn to_raw(&self) -> [u8; SpotifyId::SIZE] {
+    pub fn to_raw(&self) -> [u8; Self::SIZE] {
         self.id.to_be_bytes()
     }
 
@@ -204,11 +246,11 @@ impl SpotifyId {
     /// [Spotify URI]: https://developer.spotify.com/documentation/web-api/#spotify-uris-and-ids
     pub fn to_uri(&self) -> String {
         // 8 chars for the "spotify:" prefix + 1 colon + 22 chars base62 encoded ID  = 31
-        // + unknown size audio_type.
+        // + unknown size item_type.
-        let audio_type: &str = self.audio_type.into();
+        let item_type: &str = self.item_type.into();
-        let mut dst = String::with_capacity(31 + audio_type.len());
+        let mut dst = String::with_capacity(31 + item_type.len());
         dst.push_str("spotify:");
-        dst.push_str(audio_type);
+        dst.push_str(item_type);
         dst.push(':');
         dst.push_str(&self.to_base62());
 
@@ -216,10 +258,214 @@ impl SpotifyId {
     }
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub struct NamedSpotifyId {
+    pub inner_id: SpotifyId,
+    pub username: String,
+}
+
+impl NamedSpotifyId {
+    pub fn from_uri(src: &str) -> NamedSpotifyIdResult {
+        let uri_parts: Vec<&str> = src.split(':').collect();
+
+        // At minimum, should be `spotify:user:{username}:{type}:{id}`
+        if uri_parts.len() < 5 {
+            return Err(SpotifyIdError::InvalidFormat);
+        }
+
+        if uri_parts[0] != "spotify" {
+            return Err(SpotifyIdError::InvalidRoot);
+        }
+
+        if uri_parts[1] != "user" {
+            return Err(SpotifyIdError::InvalidFormat);
+        }
+
+        Ok(Self {
+            inner_id: SpotifyId::from_uri(src)?,
+            username: uri_parts[2].to_owned(),
+        })
+    }
+
+    pub fn to_uri(&self) -> String {
+        let item_type: &str = self.inner_id.item_type.into();
+        let mut dst = String::with_capacity(37 + self.username.len() + item_type.len());
+        dst.push_str("spotify:user:");
+        dst.push_str(&self.username);
+        dst.push_str(item_type);
+        dst.push(':');
+        dst.push_str(&self.to_base62());
+
+        dst
+    }
+
+    pub fn from_spotify_id(id: SpotifyId, username: String) -> Self {
+        Self {
+            inner_id: id,
+            username,
+        }
+    }
+}
+
+impl Deref for NamedSpotifyId {
+    type Target = SpotifyId;
+    fn deref(&self) -> &Self::Target {
+        &self.inner_id
+    }
+}
+
+impl TryFrom<&[u8]> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(src: &[u8]) -> Result<Self, Self::Error> {
+        Self::from_raw(src)
+    }
+}
+
+impl TryFrom<&str> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(src: &str) -> Result<Self, Self::Error> {
+        Self::from_base62(src)
+    }
+}
+
+impl TryFrom<String> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(src: String) -> Result<Self, Self::Error> {
+        Self::try_from(src.as_str())
+    }
+}
+
+impl TryFrom<&Vec<u8>> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(src: &Vec<u8>) -> Result<Self, Self::Error> {
+        Self::try_from(src.as_slice())
+    }
+}
+
+impl TryFrom<&protocol::spirc::TrackRef> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(track: &protocol::spirc::TrackRef) -> Result<Self, Self::Error> {
+        match SpotifyId::from_raw(track.get_gid()) {
+            Ok(mut id) => {
+                id.item_type = SpotifyItemType::Track;
+                Ok(id)
+            }
+            Err(_) => SpotifyId::from_uri(track.get_uri()),
+        }
+    }
+}
+
+impl TryFrom<&protocol::metadata::Album> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(album: &protocol::metadata::Album) -> Result<Self, Self::Error> {
+        Ok(Self {
+            item_type: SpotifyItemType::Album,
+            ..Self::from_raw(album.get_gid())?
+        })
+    }
+}
+
+impl TryFrom<&protocol::metadata::Artist> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(artist: &protocol::metadata::Artist) -> Result<Self, Self::Error> {
+        Ok(Self {
+            item_type: SpotifyItemType::Artist,
+            ..Self::from_raw(artist.get_gid())?
+        })
+    }
+}
+
+impl TryFrom<&protocol::metadata::Episode> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(episode: &protocol::metadata::Episode) -> Result<Self, Self::Error> {
+        Ok(Self {
+            item_type: SpotifyItemType::Episode,
+            ..Self::from_raw(episode.get_gid())?
+        })
+    }
+}
+
+impl TryFrom<&protocol::metadata::Track> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(track: &protocol::metadata::Track) -> Result<Self, Self::Error> {
+        Ok(Self {
+            item_type: SpotifyItemType::Track,
+            ..Self::from_raw(track.get_gid())?
+        })
+    }
+}
+
+impl TryFrom<&protocol::metadata::Show> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(show: &protocol::metadata::Show) -> Result<Self, Self::Error> {
+        Ok(Self {
+            item_type: SpotifyItemType::Show,
+            ..Self::from_raw(show.get_gid())?
+        })
+    }
+}
+
+impl TryFrom<&protocol::metadata::ArtistWithRole> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(artist: &protocol::metadata::ArtistWithRole) -> Result<Self, Self::Error> {
+        Ok(Self {
+            item_type: SpotifyItemType::Artist,
+            ..Self::from_raw(artist.get_artist_gid())?
+        })
+    }
+}
+
+impl TryFrom<&protocol::playlist4_external::Item> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(item: &protocol::playlist4_external::Item) -> Result<Self, Self::Error> {
+        Ok(Self {
+            item_type: SpotifyItemType::Track,
+            ..Self::from_uri(item.get_uri())?
+        })
+    }
+}
+
+// Note that this is the unique revision of an item's metadata on a playlist,
+// not the ID of that item or playlist.
+impl TryFrom<&protocol::playlist4_external::MetaItem> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(item: &protocol::playlist4_external::MetaItem) -> Result<Self, Self::Error> {
+        Self::try_from(item.get_revision())
+    }
+}
+
+// Note that this is the unique revision of a playlist, not the ID of that playlist.
+impl TryFrom<&protocol::playlist4_external::SelectedListContent> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(
+        playlist: &protocol::playlist4_external::SelectedListContent,
+    ) -> Result<Self, Self::Error> {
+        Self::try_from(playlist.get_revision())
+    }
+}
+
+// TODO: check meaning and format of this field in the wild. This might be a FileId,
+// which is why we now don't create a separate `Playlist` enum value yet and choose
+// to discard any item type.
+impl TryFrom<&protocol::playlist_annotate3::TranscodedPicture> for SpotifyId {
+    type Error = SpotifyIdError;
+    fn try_from(
+        picture: &protocol::playlist_annotate3::TranscodedPicture,
+    ) -> Result<Self, Self::Error> {
+        Self::from_base62(picture.get_uri())
+    }
+}
+
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct FileId(pub [u8; 20]);
 
 impl FileId {
+    pub fn from_raw(src: &[u8]) -> FileId {
+        let mut dst = [0u8; 20];
+        dst.clone_from_slice(src);
+        FileId(dst)
+    }
+
     pub fn to_base16(&self) -> String {
         to_base16(&self.0, &mut [0u8; 40])
     }
@@ -237,6 +483,29 @@ impl fmt::Display for FileId {
     }
 }
 
+impl From<&[u8]> for FileId {
+    fn from(src: &[u8]) -> Self {
+        Self::from_raw(src)
+    }
+}
+impl From<&protocol::metadata::Image> for FileId {
+    fn from(image: &protocol::metadata::Image) -> Self {
+        Self::from(image.get_file_id())
+    }
+}
+
+impl From<&protocol::metadata::AudioFile> for FileId {
+    fn from(file: &protocol::metadata::AudioFile) -> Self {
+        Self::from(file.get_file_id())
+    }
+}
+
+impl From<&protocol::metadata::VideoFile> for FileId {
+    fn from(video: &protocol::metadata::VideoFile) -> Self {
+        Self::from(video.get_file_id())
+    }
+}
+
 #[inline]
 fn to_base16(src: &[u8], buf: &mut [u8]) -> String {
     let mut i = 0;
@@ -258,7 +527,8 @@ mod tests {
 
     struct ConversionCase {
         id: u128,
-        kind: SpotifyAudioType,
+        kind: SpotifyItemType,
+        uri_error: Option<SpotifyIdError>,
         uri: &'static str,
         base16: &'static str,
         base62: &'static str,
@@ -268,7 +538,8 @@ mod tests {
     static CONV_VALID: [ConversionCase; 4] = [
         ConversionCase {
             id: 238762092608182713602505436543891614649,
-            kind: SpotifyAudioType::Track,
+            kind: SpotifyItemType::Track,
+            uri_error: None,
             uri: "spotify:track:5sWHDYs0csV6RS48xBl0tH",
             base16: "b39fe8081e1f4c54be38e8d6f9f12bb9",
             base62: "5sWHDYs0csV6RS48xBl0tH",
@@ -278,7 +549,8 @@ mod tests {
         },
         ConversionCase {
             id: 204841891221366092811751085145916697048,
-            kind: SpotifyAudioType::Track,
+            kind: SpotifyItemType::Track,
+            uri_error: None,
             uri: "spotify:track:4GNcXTGWmnZ3ySrqvol3o4",
             base16: "9a1b1cfbc6f244569ae0356c77bbe9d8",
             base62: "4GNcXTGWmnZ3ySrqvol3o4",
@@ -288,7 +560,8 @@ mod tests {
         },
         ConversionCase {
             id: 204841891221366092811751085145916697048,
-            kind: SpotifyAudioType::Podcast,
+            kind: SpotifyItemType::Episode,
+            uri_error: None,
             uri: "spotify:episode:4GNcXTGWmnZ3ySrqvol3o4",
             base16: "9a1b1cfbc6f244569ae0356c77bbe9d8",
             base62: "4GNcXTGWmnZ3ySrqvol3o4",
@@ -298,8 +571,9 @@ mod tests {
         },
         ConversionCase {
             id: 204841891221366092811751085145916697048,
-            kind: SpotifyAudioType::NonPlayable,
+            kind: SpotifyItemType::Show,
-            uri: "spotify:unknown:4GNcXTGWmnZ3ySrqvol3o4",
+            uri_error: None,
+            uri: "spotify:show:4GNcXTGWmnZ3ySrqvol3o4",
             base16: "9a1b1cfbc6f244569ae0356c77bbe9d8",
             base62: "4GNcXTGWmnZ3ySrqvol3o4",
             raw: &[
@@ -311,8 +585,9 @@ mod tests {
     static CONV_INVALID: [ConversionCase; 3] = [
         ConversionCase {
             id: 0,
-            kind: SpotifyAudioType::NonPlayable,
+            kind: SpotifyItemType::Unknown,
             // Invalid ID in the URI.
+            uri_error: Some(SpotifyIdError::InvalidId),
             uri: "spotify:arbitrarywhatever:5sWHDYs0Bl0tH",
             base16: "ZZZZZ8081e1f4c54be38e8d6f9f12bb9",
             base62: "!!!!!Ys0csV6RS48xBl0tH",
@@ -323,8 +598,9 @@ mod tests {
         },
         ConversionCase {
             id: 0,
-            kind: SpotifyAudioType::NonPlayable,
+            kind: SpotifyItemType::Unknown,
             // Missing colon between ID and type.
+            uri_error: Some(SpotifyIdError::InvalidFormat),
             uri: "spotify:arbitrarywhatever5sWHDYs0csV6RS48xBl0tH",
             base16: "--------------------",
             base62: "....................",
@@ -335,8 +611,9 @@ mod tests {
         },
         ConversionCase {
             id: 0,
-            kind: SpotifyAudioType::NonPlayable,
+            kind: SpotifyItemType::Unknown,
             // Uri too short
+            uri_error: Some(SpotifyIdError::InvalidId),
             uri: "spotify:azb:aRS48xBl0tH",
             base16: "--------------------",
             base62: "....................",
@@ -354,7 +631,10 @@ mod tests {
         }
 
         for c in &CONV_INVALID {
-            assert_eq!(SpotifyId::from_base62(c.base62), Err(SpotifyIdError));
+            assert_eq!(
+                SpotifyId::from_base62(c.base62),
+                Err(SpotifyIdError::InvalidId)
+            );
         }
     }
 
@@ -363,7 +643,7 @@ mod tests {
         for c in &CONV_VALID {
             let id = SpotifyId {
                 id: c.id,
-                audio_type: c.kind,
+                item_type: c.kind,
             };
 
             assert_eq!(id.to_base62(), c.base62);
@@ -377,7 +657,10 @@ mod tests {
         }
 
         for c in &CONV_INVALID {
-            assert_eq!(SpotifyId::from_base16(c.base16), Err(SpotifyIdError));
+            assert_eq!(
+                SpotifyId::from_base16(c.base16),
+                Err(SpotifyIdError::InvalidId)
+            );
         }
     }
 
@@ -386,7 +669,7 @@ mod tests {
         for c in &CONV_VALID {
             let id = SpotifyId {
                 id: c.id,
-                audio_type: c.kind,
+                item_type: c.kind,
             };
 
             assert_eq!(id.to_base16(), c.base16);
@@ -399,11 +682,11 @@ mod tests {
             let actual = SpotifyId::from_uri(c.uri).unwrap();
 
             assert_eq!(actual.id, c.id);
-            assert_eq!(actual.audio_type, c.kind);
+            assert_eq!(actual.item_type, c.kind);
         }
 
         for c in &CONV_INVALID {
-            assert_eq!(SpotifyId::from_uri(c.uri), Err(SpotifyIdError));
+            assert_eq!(SpotifyId::from_uri(c.uri), Err(c.uri_error.unwrap()));
         }
     }
 
@@ -412,7 +695,7 @@ mod tests {
         for c in &CONV_VALID {
             let id = SpotifyId {
                 id: c.id,
-                audio_type: c.kind,
+                item_type: c.kind,
             };
 
             assert_eq!(id.to_uri(), c.uri);
@@ -426,7 +709,7 @@ mod tests {
         }
 
         for c in &CONV_INVALID {
-            assert_eq!(SpotifyId::from_raw(c.raw), Err(SpotifyIdError));
+            assert_eq!(SpotifyId::from_raw(c.raw), Err(SpotifyIdError::InvalidId));
         }
     }
 }

metadata/Cargo.toml

@@ -11,9 +11,11 @@ edition = "2018"
 async-trait = "0.1"
 byteorder = "1.3"
 bytes = "1.0"
+chrono = "0.4"
 log = "0.4"
 protobuf = "2.14.0"
 thiserror = "1"
+uuid = { version = "0.8", default-features = false }
 
 [dependencies.librespot-core]
 path = "../core"

metadata/src/album.rs

@@ -0,0 +1,151 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{
+    artist::Artists,
+    availability::Availabilities,
+    copyright::Copyrights,
+    date::Date,
+    error::{MetadataError, RequestError},
+    external_id::ExternalIds,
+    image::Images,
+    request::RequestResult,
+    restriction::Restrictions,
+    sale_period::SalePeriods,
+    track::Tracks,
+    util::try_from_repeated_message,
+    Metadata,
+};
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+use protocol::metadata::Disc as DiscMessage;
+
+pub use protocol::metadata::Album_Type as AlbumType;
+
+#[derive(Debug, Clone)]
+pub struct Album {
+    pub id: SpotifyId,
+    pub name: String,
+    pub artists: Artists,
+    pub album_type: AlbumType,
+    pub label: String,
+    pub date: Date,
+    pub popularity: i32,
+    pub genres: Vec<String>,
+    pub covers: Images,
+    pub external_ids: ExternalIds,
+    pub discs: Discs,
+    pub reviews: Vec<String>,
+    pub copyrights: Copyrights,
+    pub restrictions: Restrictions,
+    pub related: Albums,
+    pub sale_periods: SalePeriods,
+    pub cover_group: Images,
+    pub original_title: String,
+    pub version_title: String,
+    pub type_str: String,
+    pub availability: Availabilities,
+}
+
+#[derive(Debug, Clone)]
+pub struct Albums(pub Vec<SpotifyId>);
+
+impl Deref for Albums {
+    type Target = Vec<SpotifyId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Disc {
+    pub number: i32,
+    pub name: String,
+    pub tracks: Tracks,
+}
+
+#[derive(Debug, Clone)]
+pub struct Discs(pub Vec<Disc>);
+
+impl Deref for Discs {
+    type Target = Vec<Disc>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl Album {
+    pub fn tracks(&self) -> Tracks {
+        let result = self
+            .discs
+            .iter()
+            .flat_map(|disc| disc.tracks.deref().clone())
+            .collect();
+        Tracks(result)
+    }
+}
+
+#[async_trait]
+impl Metadata for Album {
+    type Message = protocol::metadata::Album;
+
+    async fn request(session: &Session, album_id: SpotifyId) -> RequestResult {
+        session
+            .spclient()
+            .get_album_metadata(album_id)
+            .await
+            .map_err(RequestError::Http)
+    }
+
+    fn parse(msg: &Self::Message, _: SpotifyId) -> Result<Self, MetadataError> {
+        Self::try_from(msg)
+    }
+}
+
+impl TryFrom<&<Self as Metadata>::Message> for Album {
+    type Error = MetadataError;
+    fn try_from(album: &<Self as Metadata>::Message) -> Result<Self, Self::Error> {
+        Ok(Self {
+            id: album.try_into()?,
+            name: album.get_name().to_owned(),
+            artists: album.get_artist().try_into()?,
+            album_type: album.get_field_type(),
+            label: album.get_label().to_owned(),
+            date: album.get_date().into(),
+            popularity: album.get_popularity(),
+            genres: album.get_genre().to_vec(),
+            covers: album.get_cover().into(),
+            external_ids: album.get_external_id().into(),
+            discs: album.get_disc().try_into()?,
+            reviews: album.get_review().to_vec(),
+            copyrights: album.get_copyright().into(),
+            restrictions: album.get_restriction().into(),
+            related: album.get_related().try_into()?,
+            sale_periods: album.get_sale_period().into(),
+            cover_group: album.get_cover_group().get_image().into(),
+            original_title: album.get_original_title().to_owned(),
+            version_title: album.get_version_title().to_owned(),
+            type_str: album.get_type_str().to_owned(),
+            availability: album.get_availability().into(),
+        })
+    }
+}
+
+try_from_repeated_message!(<Album as Metadata>::Message, Albums);
+
+impl TryFrom<&DiscMessage> for Disc {
+    type Error = MetadataError;
+    fn try_from(disc: &DiscMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            number: disc.get_number(),
+            name: disc.get_name().to_owned(),
+            tracks: disc.get_track().try_into()?,
+        })
+    }
+}
+
+try_from_repeated_message!(DiscMessage, Discs);

metadata/src/artist.rs

@@ -0,0 +1,139 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{
+    error::{MetadataError, RequestError},
+    request::RequestResult,
+    track::Tracks,
+    util::try_from_repeated_message,
+    Metadata,
+};
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+use protocol::metadata::ArtistWithRole as ArtistWithRoleMessage;
+use protocol::metadata::TopTracks as TopTracksMessage;
+
+pub use protocol::metadata::ArtistWithRole_ArtistRole as ArtistRole;
+
+#[derive(Debug, Clone)]
+pub struct Artist {
+    pub id: SpotifyId,
+    pub name: String,
+    pub top_tracks: CountryTopTracks,
+}
+
+#[derive(Debug, Clone)]
+pub struct Artists(pub Vec<SpotifyId>);
+
+impl Deref for Artists {
+    type Target = Vec<SpotifyId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct ArtistWithRole {
+    pub id: SpotifyId,
+    pub name: String,
+    pub role: ArtistRole,
+}
+
+#[derive(Debug, Clone)]
+pub struct ArtistsWithRole(pub Vec<ArtistWithRole>);
+
+impl Deref for ArtistsWithRole {
+    type Target = Vec<ArtistWithRole>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct TopTracks {
+    pub country: String,
+    pub tracks: Tracks,
+}
+
+#[derive(Debug, Clone)]
+pub struct CountryTopTracks(pub Vec<TopTracks>);
+
+impl Deref for CountryTopTracks {
+    type Target = Vec<TopTracks>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl CountryTopTracks {
+    pub fn for_country(&self, country: &str) -> Tracks {
+        if let Some(country) = self.0.iter().find(|top_track| top_track.country == country) {
+            return country.tracks.clone();
+        }
+
+        if let Some(global) = self.0.iter().find(|top_track| top_track.country.is_empty()) {
+            return global.tracks.clone();
+        }
+
+        Tracks(vec![]) // none found
+    }
+}
+
+#[async_trait]
+impl Metadata for Artist {
+    type Message = protocol::metadata::Artist;
+
+    async fn request(session: &Session, artist_id: SpotifyId) -> RequestResult {
+        session
+            .spclient()
+            .get_artist_metadata(artist_id)
+            .await
+            .map_err(RequestError::Http)
+    }
+
+    fn parse(msg: &Self::Message, _: SpotifyId) -> Result<Self, MetadataError> {
+        Self::try_from(msg)
+    }
+}
+
+impl TryFrom<&<Self as Metadata>::Message> for Artist {
+    type Error = MetadataError;
+    fn try_from(artist: &<Self as Metadata>::Message) -> Result<Self, Self::Error> {
+        Ok(Self {
+            id: artist.try_into()?,
+            name: artist.get_name().to_owned(),
+            top_tracks: artist.get_top_track().try_into()?,
+        })
+    }
+}
+
+try_from_repeated_message!(<Artist as Metadata>::Message, Artists);
+
+impl TryFrom<&ArtistWithRoleMessage> for ArtistWithRole {
+    type Error = MetadataError;
+    fn try_from(artist_with_role: &ArtistWithRoleMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            id: artist_with_role.try_into()?,
+            name: artist_with_role.get_artist_name().to_owned(),
+            role: artist_with_role.get_role(),
+        })
+    }
+}
+
+try_from_repeated_message!(ArtistWithRoleMessage, ArtistsWithRole);
+
+impl TryFrom<&TopTracksMessage> for TopTracks {
+    type Error = MetadataError;
+    fn try_from(top_tracks: &TopTracksMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            country: top_tracks.get_country().to_owned(),
+            tracks: top_tracks.get_track().try_into()?,
+        })
+    }
+}
+
+try_from_repeated_message!(TopTracksMessage, CountryTopTracks);

metadata/src/audio/file.rs

@@ -0,0 +1,31 @@
+use std::collections::HashMap;
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use librespot_core::spotify_id::FileId;
+use librespot_protocol as protocol;
+
+use protocol::metadata::AudioFile as AudioFileMessage;
+
+pub use protocol::metadata::AudioFile_Format as AudioFileFormat;
+
+#[derive(Debug, Clone)]
+pub struct AudioFiles(pub HashMap<AudioFileFormat, FileId>);
+
+impl Deref for AudioFiles {
+    type Target = HashMap<AudioFileFormat, FileId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl From<&[AudioFileMessage]> for AudioFiles {
+    fn from(files: &[AudioFileMessage]) -> Self {
+        let audio_files = files
+            .iter()
+            .map(|file| (file.get_format(), FileId::from(file.get_file_id())))
+            .collect();
+
+        AudioFiles(audio_files)
+    }
+}

metadata/src/audio/item.rs

@@ -0,0 +1,104 @@
+use std::fmt::Debug;
+
+use chrono::Local;
+
+use crate::{
+    availability::{AudioItemAvailability, Availabilities, UnavailabilityReason},
+    episode::Episode,
+    error::MetadataError,
+    restriction::Restrictions,
+    track::{Track, Tracks},
+};
+
+use super::file::AudioFiles;
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::{SpotifyId, SpotifyItemType};
+
+pub type AudioItemResult = Result<AudioItem, MetadataError>;
+
+// A wrapper with fields the player needs
+#[derive(Debug, Clone)]
+pub struct AudioItem {
+    pub id: SpotifyId,
+    pub spotify_uri: String,
+    pub files: AudioFiles,
+    pub name: String,
+    pub duration: i32,
+    pub availability: AudioItemAvailability,
+    pub alternatives: Option<Tracks>,
+}
+
+impl AudioItem {
+    pub async fn get_file(session: &Session, id: SpotifyId) -> AudioItemResult {
+        match id.item_type {
+            SpotifyItemType::Track => Track::get_audio_item(session, id).await,
+            SpotifyItemType::Episode => Episode::get_audio_item(session, id).await,
+            _ => Err(MetadataError::NonPlayable),
+        }
+    }
+}
+
+#[async_trait]
+pub trait InnerAudioItem {
+    async fn get_audio_item(session: &Session, id: SpotifyId) -> AudioItemResult;
+
+    fn allowed_in_country(restrictions: &Restrictions, country: &str) -> AudioItemAvailability {
+        for premium_restriction in restrictions.iter().filter(|restriction| {
+            restriction
+                .catalogue_strs
+                .iter()
+                .any(|catalogue| *catalogue == "premium")
+        }) {
+            if let Some(allowed_countries) = &premium_restriction.countries_allowed {
+                // A restriction will specify either a whitelast *or* a blacklist,
+                // but not both. So restrict availability if there is a whitelist
+                // and the country isn't on it.
+                if allowed_countries.iter().any(|allowed| country == *allowed) {
+                    return Ok(());
+                } else {
+                    return Err(UnavailabilityReason::NotWhitelisted);
+                }
+            }
+
+            if let Some(forbidden_countries) = &premium_restriction.countries_forbidden {
+                if forbidden_countries
+                    .iter()
+                    .any(|forbidden| country == *forbidden)
+                {
+                    return Err(UnavailabilityReason::Blacklisted);
+                } else {
+                    return Ok(());
+                }
+            }
+        }
+
+        Ok(()) // no restrictions in place
+    }
+
+    fn available(availability: &Availabilities) -> AudioItemAvailability {
+        if availability.is_empty() {
+            // not all items have availability specified
+            return Ok(());
+        }
+
+        if !(availability
+            .iter()
+            .any(|availability| Local::now() >= availability.start.as_utc()))
+        {
+            return Err(UnavailabilityReason::Embargo);
+        }
+
+        Ok(())
+    }
+
+    fn available_in_country(
+        availability: &Availabilities,
+        restrictions: &Restrictions,
+        country: &str,
+    ) -> AudioItemAvailability {
+        Self::available(availability)?;
+        Self::allowed_in_country(restrictions, country)?;
+        Ok(())
+    }
+}

metadata/src/audio/mod.rs

@@ -0,0 +1,5 @@
+pub mod file;
+pub mod item;
+
+pub use file::AudioFileFormat;
+pub use item::AudioItem;

metadata/src/availability.rs

@@ -0,0 +1,49 @@
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use thiserror::Error;
+
+use crate::{date::Date, util::from_repeated_message};
+
+use librespot_protocol as protocol;
+
+use protocol::metadata::Availability as AvailabilityMessage;
+
+pub type AudioItemAvailability = Result<(), UnavailabilityReason>;
+
+#[derive(Debug, Clone)]
+pub struct Availability {
+    pub catalogue_strs: Vec<String>,
+    pub start: Date,
+}
+
+#[derive(Debug, Clone)]
+pub struct Availabilities(pub Vec<Availability>);
+
+impl Deref for Availabilities {
+    type Target = Vec<Availability>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Copy, Clone, Error)]
+pub enum UnavailabilityReason {
+    #[error("blacklist present and country on it")]
+    Blacklisted,
+    #[error("available date is in the future")]
+    Embargo,
+    #[error("whitelist present and country not on it")]
+    NotWhitelisted,
+}
+
+impl From<&AvailabilityMessage> for Availability {
+    fn from(availability: &AvailabilityMessage) -> Self {
+        Self {
+            catalogue_strs: availability.get_catalogue_str().to_vec(),
+            start: availability.get_start().into(),
+        }
+    }
+}
+
+from_repeated_message!(AvailabilityMessage, Availabilities);

metadata/src/content_rating.rs

@@ -0,0 +1,35 @@
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::util::from_repeated_message;
+
+use librespot_protocol as protocol;
+
+use protocol::metadata::ContentRating as ContentRatingMessage;
+
+#[derive(Debug, Clone)]
+pub struct ContentRating {
+    pub country: String,
+    pub tags: Vec<String>,
+}
+
+#[derive(Debug, Clone)]
+pub struct ContentRatings(pub Vec<ContentRating>);
+
+impl Deref for ContentRatings {
+    type Target = Vec<ContentRating>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl From<&ContentRatingMessage> for ContentRating {
+    fn from(content_rating: &ContentRatingMessage) -> Self {
+        Self {
+            country: content_rating.get_country().to_owned(),
+            tags: content_rating.get_tag().to_vec(),
+        }
+    }
+}
+
+from_repeated_message!(ContentRatingMessage, ContentRatings);

metadata/src/copyright.rs

@@ -0,0 +1,37 @@
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use librespot_protocol as protocol;
+
+use crate::util::from_repeated_message;
+
+use protocol::metadata::Copyright as CopyrightMessage;
+
+pub use protocol::metadata::Copyright_Type as CopyrightType;
+
+#[derive(Debug, Clone)]
+pub struct Copyright {
+    pub copyright_type: CopyrightType,
+    pub text: String,
+}
+
+#[derive(Debug, Clone)]
+pub struct Copyrights(pub Vec<Copyright>);
+
+impl Deref for Copyrights {
+    type Target = Vec<Copyright>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl From<&CopyrightMessage> for Copyright {
+    fn from(copyright: &CopyrightMessage) -> Self {
+        Self {
+            copyright_type: copyright.get_field_type(),
+            text: copyright.get_text().to_owned(),
+        }
+    }
+}
+
+from_repeated_message!(CopyrightMessage, Copyrights);

metadata/src/cover.rs

@@ -1,20 +0,0 @@
-use byteorder::{BigEndian, WriteBytesExt};
-use std::io::Write;
-
-use librespot_core::channel::ChannelData;
-use librespot_core::packet::PacketType;
-use librespot_core::session::Session;
-use librespot_core::spotify_id::FileId;
-
-pub fn get(session: &Session, file: FileId) -> ChannelData {
-    let (channel_id, channel) = session.channel().allocate();
-    let (_headers, data) = channel.split();
-
-    let mut packet: Vec<u8> = Vec::new();
-    packet.write_u16::<BigEndian>(channel_id).unwrap();
-    packet.write_u16::<BigEndian>(0).unwrap();
-    packet.write(&file.0).unwrap();
-    session.send_packet(PacketType::Image, packet);
-
-    data
-}

metadata/src/date.rs

@@ -0,0 +1,70 @@
+use std::convert::TryFrom;
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use chrono::{DateTime, Utc};
+use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
+
+use crate::error::MetadataError;
+
+use librespot_protocol as protocol;
+
+use protocol::metadata::Date as DateMessage;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub struct Date(pub DateTime<Utc>);
+
+impl Deref for Date {
+    type Target = DateTime<Utc>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl Date {
+    pub fn as_timestamp(&self) -> i64 {
+        self.0.timestamp()
+    }
+
+    pub fn from_timestamp(timestamp: i64) -> Result<Self, MetadataError> {
+        if let Some(date_time) = NaiveDateTime::from_timestamp_opt(timestamp, 0) {
+            Ok(Self::from_utc(date_time))
+        } else {
+            Err(MetadataError::InvalidTimestamp)
+        }
+    }
+
+    pub fn as_utc(&self) -> DateTime<Utc> {
+        self.0
+    }
+
+    pub fn from_utc(date_time: NaiveDateTime) -> Self {
+        Self(DateTime::<Utc>::from_utc(date_time, Utc))
+    }
+}
+
+impl From<&DateMessage> for Date {
+    fn from(date: &DateMessage) -> Self {
+        let naive_date = NaiveDate::from_ymd(
+            date.get_year() as i32,
+            date.get_month() as u32,
+            date.get_day() as u32,
+        );
+        let naive_time = NaiveTime::from_hms(date.get_hour() as u32, date.get_minute() as u32, 0);
+        let naive_datetime = NaiveDateTime::new(naive_date, naive_time);
+        Self(DateTime::<Utc>::from_utc(naive_datetime, Utc))
+    }
+}
+
+impl From<DateTime<Utc>> for Date {
+    fn from(date: DateTime<Utc>) -> Self {
+        Self(date)
+    }
+}
+
+impl TryFrom<i64> for Date {
+    type Error = MetadataError;
+    fn try_from(timestamp: i64) -> Result<Self, Self::Error> {
+        Self::from_timestamp(timestamp)
+    }
+}

metadata/src/episode.rs

@@ -0,0 +1,132 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{
+    audio::{
+        file::AudioFiles,
+        item::{AudioItem, AudioItemResult, InnerAudioItem},
+    },
+    availability::Availabilities,
+    date::Date,
+    error::{MetadataError, RequestError},
+    image::Images,
+    request::RequestResult,
+    restriction::Restrictions,
+    util::try_from_repeated_message,
+    video::VideoFiles,
+    Metadata,
+};
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+pub use protocol::metadata::Episode_EpisodeType as EpisodeType;
+
+#[derive(Debug, Clone)]
+pub struct Episode {
+    pub id: SpotifyId,
+    pub name: String,
+    pub duration: i32,
+    pub audio: AudioFiles,
+    pub description: String,
+    pub number: i32,
+    pub publish_time: Date,
+    pub covers: Images,
+    pub language: String,
+    pub is_explicit: bool,
+    pub show: SpotifyId,
+    pub videos: VideoFiles,
+    pub video_previews: VideoFiles,
+    pub audio_previews: AudioFiles,
+    pub restrictions: Restrictions,
+    pub freeze_frames: Images,
+    pub keywords: Vec<String>,
+    pub allow_background_playback: bool,
+    pub availability: Availabilities,
+    pub external_url: String,
+    pub episode_type: EpisodeType,
+    pub has_music_and_talk: bool,
+}
+
+#[derive(Debug, Clone)]
+pub struct Episodes(pub Vec<SpotifyId>);
+
+impl Deref for Episodes {
+    type Target = Vec<SpotifyId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[async_trait]
+impl InnerAudioItem for Episode {
+    async fn get_audio_item(session: &Session, id: SpotifyId) -> AudioItemResult {
+        let episode = Self::get(session, id).await?;
+        let availability = Self::available_in_country(
+            &episode.availability,
+            &episode.restrictions,
+            &session.country(),
+        );
+
+        Ok(AudioItem {
+            id,
+            spotify_uri: id.to_uri(),
+            files: episode.audio,
+            name: episode.name,
+            duration: episode.duration,
+            availability,
+            alternatives: None,
+        })
+    }
+}
+
+#[async_trait]
+impl Metadata for Episode {
+    type Message = protocol::metadata::Episode;
+
+    async fn request(session: &Session, episode_id: SpotifyId) -> RequestResult {
+        session
+            .spclient()
+            .get_episode_metadata(episode_id)
+            .await
+            .map_err(RequestError::Http)
+    }
+
+    fn parse(msg: &Self::Message, _: SpotifyId) -> Result<Self, MetadataError> {
+        Self::try_from(msg)
+    }
+}
+
+impl TryFrom<&<Self as Metadata>::Message> for Episode {
+    type Error = MetadataError;
+    fn try_from(episode: &<Self as Metadata>::Message) -> Result<Self, Self::Error> {
+        Ok(Self {
+            id: episode.try_into()?,
+            name: episode.get_name().to_owned(),
+            duration: episode.get_duration().to_owned(),
+            audio: episode.get_audio().into(),
+            description: episode.get_description().to_owned(),
+            number: episode.get_number(),
+            publish_time: episode.get_publish_time().into(),
+            covers: episode.get_cover_image().get_image().into(),
+            language: episode.get_language().to_owned(),
+            is_explicit: episode.get_explicit().to_owned(),
+            show: episode.get_show().try_into()?,
+            videos: episode.get_video().into(),
+            video_previews: episode.get_video_preview().into(),
+            audio_previews: episode.get_audio_preview().into(),
+            restrictions: episode.get_restriction().into(),
+            freeze_frames: episode.get_freeze_frame().get_image().into(),
+            keywords: episode.get_keyword().to_vec(),
+            allow_background_playback: episode.get_allow_background_playback(),
+            availability: episode.get_availability().into(),
+            external_url: episode.get_external_url().to_owned(),
+            episode_type: episode.get_field_type(),
+            has_music_and_talk: episode.get_music_and_talk(),
+        })
+    }
+}
+
+try_from_repeated_message!(<Episode as Metadata>::Message, Episodes);

metadata/src/error.rs

@@ -0,0 +1,34 @@
+use std::fmt::Debug;
+use thiserror::Error;
+
+use protobuf::ProtobufError;
+
+use librespot_core::mercury::MercuryError;
+use librespot_core::spclient::SpClientError;
+use librespot_core::spotify_id::SpotifyIdError;
+
+#[derive(Debug, Error)]
+pub enum RequestError {
+    #[error("could not get metadata over HTTP: {0}")]
+    Http(#[from] SpClientError),
+    #[error("could not get metadata over Mercury: {0}")]
+    Mercury(#[from] MercuryError),
+    #[error("response was empty")]
+    Empty,
+}
+
+#[derive(Debug, Error)]
+pub enum MetadataError {
+    #[error("{0}")]
+    InvalidSpotifyId(#[from] SpotifyIdError),
+    #[error("item has invalid date")]
+    InvalidTimestamp,
+    #[error("audio item is non-playable")]
+    NonPlayable,
+    #[error("could not parse protobuf: {0}")]
+    Protobuf(#[from] ProtobufError),
+    #[error("error executing request: {0}")]
+    Request(#[from] RequestError),
+    #[error("could not parse repeated fields")]
+    InvalidRepeated,
+}

metadata/src/external_id.rs

@@ -0,0 +1,35 @@
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::util::from_repeated_message;
+
+use librespot_protocol as protocol;
+
+use protocol::metadata::ExternalId as ExternalIdMessage;
+
+#[derive(Debug, Clone)]
+pub struct ExternalId {
+    pub external_type: String,
+    pub id: String,
+}
+
+#[derive(Debug, Clone)]
+pub struct ExternalIds(pub Vec<ExternalId>);
+
+impl Deref for ExternalIds {
+    type Target = Vec<ExternalId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl From<&ExternalIdMessage> for ExternalId {
+    fn from(external_id: &ExternalIdMessage) -> Self {
+        Self {
+            external_type: external_id.get_field_type().to_owned(),
+            id: external_id.get_id().to_owned(),
+        }
+    }
+}
+
+from_repeated_message!(ExternalIdMessage, ExternalIds);

metadata/src/image.rs

@@ -0,0 +1,103 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{
+    error::MetadataError,
+    util::{from_repeated_message, try_from_repeated_message},
+};
+
+use librespot_core::spotify_id::{FileId, SpotifyId};
+use librespot_protocol as protocol;
+
+use protocol::metadata::Image as ImageMessage;
+use protocol::playlist4_external::PictureSize as PictureSizeMessage;
+use protocol::playlist_annotate3::TranscodedPicture as TranscodedPictureMessage;
+
+pub use protocol::metadata::Image_Size as ImageSize;
+
+#[derive(Debug, Clone)]
+pub struct Image {
+    pub id: FileId,
+    pub size: ImageSize,
+    pub width: i32,
+    pub height: i32,
+}
+
+#[derive(Debug, Clone)]
+pub struct Images(pub Vec<Image>);
+
+impl Deref for Images {
+    type Target = Vec<Image>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct PictureSize {
+    pub target_name: String,
+    pub url: String,
+}
+
+#[derive(Debug, Clone)]
+pub struct PictureSizes(pub Vec<PictureSize>);
+
+impl Deref for PictureSizes {
+    type Target = Vec<PictureSize>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct TranscodedPicture {
+    pub target_name: String,
+    pub uri: SpotifyId,
+}
+
+#[derive(Debug, Clone)]
+pub struct TranscodedPictures(pub Vec<TranscodedPicture>);
+
+impl Deref for TranscodedPictures {
+    type Target = Vec<TranscodedPicture>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl From<&ImageMessage> for Image {
+    fn from(image: &ImageMessage) -> Self {
+        Self {
+            id: image.into(),
+            size: image.get_size(),
+            width: image.get_width(),
+            height: image.get_height(),
+        }
+    }
+}
+
+from_repeated_message!(ImageMessage, Images);
+
+impl From<&PictureSizeMessage> for PictureSize {
+    fn from(size: &PictureSizeMessage) -> Self {
+        Self {
+            target_name: size.get_target_name().to_owned(),
+            url: size.get_url().to_owned(),
+        }
+    }
+}
+
+from_repeated_message!(PictureSizeMessage, PictureSizes);
+
+impl TryFrom<&TranscodedPictureMessage> for TranscodedPicture {
+    type Error = MetadataError;
+    fn try_from(picture: &TranscodedPictureMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            target_name: picture.get_target_name().to_owned(),
+            uri: picture.try_into()?,
+        })
+    }
+}
+
+try_from_repeated_message!(TranscodedPictureMessage, TranscodedPictures);

metadata/src/lib.rs

@@ -1,643 +1,51 @@
-#![allow(clippy::unused_io_amount)]
-
 #[macro_use]
 extern crate log;
 
 #[macro_use]
 extern crate async_trait;
 
-pub mod cover;
+use protobuf::Message;
 
-use std::collections::HashMap;
-
-use librespot_core::mercury::MercuryError;
 use librespot_core::session::Session;
-use librespot_core::spclient::SpClientError;
+use librespot_core::spotify_id::SpotifyId;
-use librespot_core::spotify_id::{FileId, SpotifyAudioType, SpotifyId};
-use librespot_protocol as protocol;
-use protobuf::{Message, ProtobufError};
 
-use thiserror::Error;
+pub mod album;
+pub mod artist;
+pub mod audio;
+pub mod availability;
+pub mod content_rating;
+pub mod copyright;
+pub mod date;
+pub mod episode;
+pub mod error;
+pub mod external_id;
+pub mod image;
+pub mod playlist;
+mod request;
+pub mod restriction;
+pub mod sale_period;
+pub mod show;
+pub mod track;
+mod util;
+pub mod video;
 
-pub use crate::protocol::metadata::AudioFile_Format as FileFormat;
+use error::MetadataError;
-
+use request::RequestResult;
-fn countrylist_contains(list: &str, country: &str) -> bool {
-    list.chunks(2).any(|cc| cc == country)
-}
-
-fn parse_restrictions<'s, I>(restrictions: I, country: &str, catalogue: &str) -> bool
-where
-    I: IntoIterator<Item = &'s protocol::metadata::Restriction>,
-{
-    let mut forbidden = "".to_string();
-    let mut has_forbidden = false;
-
-    let mut allowed = "".to_string();
-    let mut has_allowed = false;
-
-    let rs = restrictions
-        .into_iter()
-        .filter(|r| r.get_catalogue_str().contains(&catalogue.to_owned()));
-
-    for r in rs {
-        if r.has_countries_forbidden() {
-            forbidden.push_str(r.get_countries_forbidden());
-            has_forbidden = true;
-        }
-
-        if r.has_countries_allowed() {
-            allowed.push_str(r.get_countries_allowed());
-            has_allowed = true;
-        }
-    }
-
-    !(has_forbidden && countrylist_contains(forbidden.as_str(), country)
-        || has_allowed && !countrylist_contains(allowed.as_str(), country))
-}
-
-// A wrapper with fields the player needs
-#[derive(Debug, Clone)]
-pub struct AudioItem {
-    pub id: SpotifyId,
-    pub uri: String,
-    pub files: HashMap<FileFormat, FileId>,
-    pub name: String,
-    pub duration: i32,
-    pub available: bool,
-    pub alternatives: Option<Vec<SpotifyId>>,
-}
-
-impl AudioItem {
-    pub async fn get_audio_item(session: &Session, id: SpotifyId) -> Result<Self, MetadataError> {
-        match id.audio_type {
-            SpotifyAudioType::Track => Track::get_audio_item(session, id).await,
-            SpotifyAudioType::Podcast => Episode::get_audio_item(session, id).await,
-            SpotifyAudioType::NonPlayable => Err(MetadataError::NonPlayable),
-        }
-    }
-}
-
-pub type AudioItemResult = Result<AudioItem, MetadataError>;
-
-#[async_trait]
-trait AudioFiles {
-    async fn get_audio_item(session: &Session, id: SpotifyId) -> AudioItemResult;
-}
-
-#[async_trait]
-impl AudioFiles for Track {
-    async fn get_audio_item(session: &Session, id: SpotifyId) -> AudioItemResult {
-        let item = Self::get(session, id).await?;
-        let alternatives = {
-            if item.alternatives.is_empty() {
-                None
-            } else {
-                Some(item.alternatives)
-            }
-        };
-
-        Ok(AudioItem {
-            id,
-            uri: format!("spotify:track:{}", id.to_base62()),
-            files: item.files,
-            name: item.name,
-            duration: item.duration,
-            available: item.available,
-            alternatives,
-        })
-    }
-}
-
-#[async_trait]
-impl AudioFiles for Episode {
-    async fn get_audio_item(session: &Session, id: SpotifyId) -> AudioItemResult {
-        let item = Self::get(session, id).await?;
-
-        Ok(AudioItem {
-            id,
-            uri: format!("spotify:episode:{}", id.to_base62()),
-            files: item.files,
-            name: item.name,
-            duration: item.duration,
-            available: item.available,
-            alternatives: None,
-        })
-    }
-}
-
-#[derive(Debug, Error)]
-pub enum MetadataError {
-    #[error("could not get metadata over HTTP: {0}")]
-    Http(#[from] SpClientError),
-    #[error("could not get metadata over Mercury: {0}")]
-    Mercury(#[from] MercuryError),
-    #[error("could not parse metadata: {0}")]
-    Parsing(#[from] ProtobufError),
-    #[error("response was empty")]
-    Empty,
-    #[error("audio item is non-playable")]
-    NonPlayable,
-}
-
-pub type MetadataResult = Result<bytes::Bytes, MetadataError>;
 
 #[async_trait]
 pub trait Metadata: Send + Sized + 'static {
     type Message: protobuf::Message;
 
-    async fn request(session: &Session, id: SpotifyId) -> MetadataResult;
+    // Request a protobuf
-    fn parse(msg: &Self::Message, session: &Session) -> Self;
+    async fn request(session: &Session, id: SpotifyId) -> RequestResult;
 
+    // Request a metadata struct
     async fn get(session: &Session, id: SpotifyId) -> Result<Self, MetadataError> {
         let response = Self::request(session, id).await?;
         let msg = Self::Message::parse_from_bytes(&response)?;
-        Ok(Self::parse(&msg, session))
+        trace!("Received metadata: {:?}", msg);
-    }
+        Self::parse(&msg, id)
     }
 
-// TODO: expose more fields available in the protobufs
+    fn parse(msg: &Self::Message, _: SpotifyId) -> Result<Self, MetadataError>;
-
-#[derive(Debug, Clone)]
-pub struct Track {
-    pub id: SpotifyId,
-    pub name: String,
-    pub duration: i32,
-    pub album: SpotifyId,
-    pub artists: Vec<SpotifyId>,
-    pub files: HashMap<FileFormat, FileId>,
-    pub alternatives: Vec<SpotifyId>,
-    pub available: bool,
-}
-
-#[derive(Debug, Clone)]
-pub struct Album {
-    pub id: SpotifyId,
-    pub name: String,
-    pub artists: Vec<SpotifyId>,
-    pub tracks: Vec<SpotifyId>,
-    pub covers: Vec<FileId>,
-}
-
-#[derive(Debug, Clone)]
-pub struct Episode {
-    pub id: SpotifyId,
-    pub name: String,
-    pub external_url: String,
-    pub duration: i32,
-    pub language: String,
-    pub show: SpotifyId,
-    pub files: HashMap<FileFormat, FileId>,
-    pub covers: Vec<FileId>,
-    pub available: bool,
-    pub explicit: bool,
-}
-
-#[derive(Debug, Clone)]
-pub struct Show {
-    pub id: SpotifyId,
-    pub name: String,
-    pub publisher: String,
-    pub episodes: Vec<SpotifyId>,
-    pub covers: Vec<FileId>,
-}
-
-#[derive(Debug, Clone)]
-pub struct TranscodedPicture {
-    pub target_name: String,
-    pub uri: String,
-}
-
-#[derive(Debug, Clone)]
-pub struct PlaylistAnnotation {
-    pub description: String,
-    pub picture: String,
-    pub transcoded_pictures: Vec<TranscodedPicture>,
-    pub abuse_reporting: bool,
-    pub taken_down: bool,
-}
-
-#[derive(Debug, Clone)]
-pub struct Playlist {
-    pub revision: Vec<u8>,
-    pub user: String,
-    pub name: String,
-    pub tracks: Vec<SpotifyId>,
-}
-
-#[derive(Debug, Clone)]
-pub struct Artist {
-    pub id: SpotifyId,
-    pub name: String,
-    pub top_tracks: Vec<SpotifyId>,
-}
-
-#[async_trait]
-impl Metadata for Track {
-    type Message = protocol::metadata::Track;
-
-    async fn request(session: &Session, track_id: SpotifyId) -> MetadataResult {
-        session
-            .spclient()
-            .get_track_metadata(track_id)
-            .await
-            .map_err(MetadataError::Http)
-    }
-
-    fn parse(msg: &Self::Message, session: &Session) -> Self {
-        debug!("MESSAGE: {:?}", msg);
-        let country = session.country();
-
-        let artists = msg
-            .get_artist()
-            .iter()
-            .filter(|artist| artist.has_gid())
-            .map(|artist| SpotifyId::from_raw(artist.get_gid()).unwrap())
-            .collect::<Vec<_>>();
-
-        let files = msg
-            .get_file()
-            .iter()
-            .filter(|file| file.has_file_id())
-            .map(|file| {
-                let mut dst = [0u8; 20];
-                dst.clone_from_slice(file.get_file_id());
-                (file.get_format(), FileId(dst))
-            })
-            .collect();
-
-        Self {
-            id: SpotifyId::from_raw(msg.get_gid()).unwrap(),
-            name: msg.get_name().to_owned(),
-            duration: msg.get_duration(),
-            album: SpotifyId::from_raw(msg.get_album().get_gid()).unwrap(),
-            artists,
-            files,
-            alternatives: msg
-                .get_alternative()
-                .iter()
-                .map(|alt| SpotifyId::from_raw(alt.get_gid()).unwrap())
-                .collect(),
-            available: parse_restrictions(msg.get_restriction(), &country, "premium"),
-        }
-    }
-}
-
-#[async_trait]
-impl Metadata for Album {
-    type Message = protocol::metadata::Album;
-
-    async fn request(session: &Session, album_id: SpotifyId) -> MetadataResult {
-        session
-            .spclient()
-            .get_album_metadata(album_id)
-            .await
-            .map_err(MetadataError::Http)
-    }
-
-    fn parse(msg: &Self::Message, _: &Session) -> Self {
-        let artists = msg
-            .get_artist()
-            .iter()
-            .filter(|artist| artist.has_gid())
-            .map(|artist| SpotifyId::from_raw(artist.get_gid()).unwrap())
-            .collect::<Vec<_>>();
-
-        let tracks = msg
-            .get_disc()
-            .iter()
-            .flat_map(|disc| disc.get_track())
-            .filter(|track| track.has_gid())
-            .map(|track| SpotifyId::from_raw(track.get_gid()).unwrap())
-            .collect::<Vec<_>>();
-
-        let covers = msg
-            .get_cover_group()
-            .get_image()
-            .iter()
-            .filter(|image| image.has_file_id())
-            .map(|image| {
-                let mut dst = [0u8; 20];
-                dst.clone_from_slice(image.get_file_id());
-                FileId(dst)
-            })
-            .collect::<Vec<_>>();
-
-        Self {
-            id: SpotifyId::from_raw(msg.get_gid()).unwrap(),
-            name: msg.get_name().to_owned(),
-            artists,
-            tracks,
-            covers,
-        }
-    }
-}
-
-#[async_trait]
-impl Metadata for PlaylistAnnotation {
-    type Message = protocol::playlist_annotate3::PlaylistAnnotation;
-
-    async fn request(session: &Session, playlist_id: SpotifyId) -> MetadataResult {
-        let current_user = session.username();
-        Self::request_for_user(session, current_user, playlist_id).await
-    }
-
-    fn parse(msg: &Self::Message, _: &Session) -> Self {
-        let transcoded_pictures = msg
-            .get_transcoded_picture()
-            .iter()
-            .map(|picture| TranscodedPicture {
-                target_name: picture.get_target_name().to_string(),
-                uri: picture.get_uri().to_string(),
-            })
-            .collect::<Vec<_>>();
-
-        let taken_down = !matches!(
-            msg.get_abuse_report_state(),
-            protocol::playlist_annotate3::AbuseReportState::OK
-        );
-
-        Self {
-            description: msg.get_description().to_string(),
-            picture: msg.get_picture().to_string(),
-            transcoded_pictures,
-            abuse_reporting: msg.get_is_abuse_reporting_enabled(),
-            taken_down,
-        }
-    }
-}
-
-impl PlaylistAnnotation {
-    async fn request_for_user(
-        session: &Session,
-        username: String,
-        playlist_id: SpotifyId,
-    ) -> MetadataResult {
-        let uri = format!(
-            "hm://playlist-annotate/v1/annotation/user/{}/playlist/{}",
-            username,
-            playlist_id.to_base62()
-        );
-        let response = session.mercury().get(uri).await?;
-        match response.payload.first() {
-            Some(data) => Ok(data.to_vec().into()),
-            None => Err(MetadataError::Empty),
-        }
-    }
-
-    #[allow(dead_code)]
-    async fn get_for_user(
-        session: &Session,
-        username: String,
-        playlist_id: SpotifyId,
-    ) -> Result<Self, MetadataError> {
-        let response = Self::request_for_user(session, username, playlist_id).await?;
-        let msg = <Self as Metadata>::Message::parse_from_bytes(&response)?;
-        Ok(Self::parse(&msg, session))
-    }
-}
-
-#[async_trait]
-impl Metadata for Playlist {
-    type Message = protocol::playlist4_external::SelectedListContent;
-
-    async fn request(session: &Session, playlist_id: SpotifyId) -> MetadataResult {
-        let uri = format!("hm://playlist/v2/playlist/{}", playlist_id.to_base62());
-        let response = session.mercury().get(uri).await?;
-        match response.payload.first() {
-            Some(data) => Ok(data.to_vec().into()),
-            None => Err(MetadataError::Empty),
-        }
-    }
-
-    fn parse(msg: &Self::Message, _: &Session) -> Self {
-        let tracks = msg
-            .get_contents()
-            .get_items()
-            .iter()
-            .map(|item| {
-                let uri_split = item.get_uri().split(':');
-                let uri_parts: Vec<&str> = uri_split.collect();
-                SpotifyId::from_base62(uri_parts[2]).unwrap()
-            })
-            .collect::<Vec<_>>();
-
-        if tracks.len() != msg.get_length() as usize {
-            warn!(
-                "Got {} tracks, but the playlist should contain {} tracks.",
-                tracks.len(),
-                msg.get_length()
-            );
-        }
-
-        Self {
-            revision: msg.get_revision().to_vec(),
-            name: msg.get_attributes().get_name().to_owned(),
-            tracks,
-            user: msg.get_owner_username().to_string(),
-        }
-    }
-}
-
-impl Playlist {
-    async fn request_for_user(
-        session: &Session,
-        username: String,
-        playlist_id: SpotifyId,
-    ) -> MetadataResult {
-        let uri = format!(
-            "hm://playlist/user/{}/playlist/{}",
-            username,
-            playlist_id.to_base62()
-        );
-        let response = session.mercury().get(uri).await?;
-        match response.payload.first() {
-            Some(data) => Ok(data.to_vec().into()),
-            None => Err(MetadataError::Empty),
-        }
-    }
-
-    async fn request_root_for_user(session: &Session, username: String) -> MetadataResult {
-        let uri = format!("hm://playlist/user/{}/rootlist", username);
-        let response = session.mercury().get(uri).await?;
-        match response.payload.first() {
-            Some(data) => Ok(data.to_vec().into()),
-            None => Err(MetadataError::Empty),
-        }
-    }
-    #[allow(dead_code)]
-    async fn get_for_user(
-        session: &Session,
-        username: String,
-        playlist_id: SpotifyId,
-    ) -> Result<Self, MetadataError> {
-        let response = Self::request_for_user(session, username, playlist_id).await?;
-        let msg = <Self as Metadata>::Message::parse_from_bytes(&response)?;
-        Ok(Self::parse(&msg, session))
-    }
-
-    #[allow(dead_code)]
-    async fn get_root_for_user(session: &Session, username: String) -> Result<Self, MetadataError> {
-        let response = Self::request_root_for_user(session, username).await?;
-        let msg = <Self as Metadata>::Message::parse_from_bytes(&response)?;
-        Ok(Self::parse(&msg, session))
-    }
-}
-
-#[async_trait]
-impl Metadata for Artist {
-    type Message = protocol::metadata::Artist;
-
-    async fn request(session: &Session, artist_id: SpotifyId) -> MetadataResult {
-        session
-            .spclient()
-            .get_artist_metadata(artist_id)
-            .await
-            .map_err(MetadataError::Http)
-    }
-
-    fn parse(msg: &Self::Message, session: &Session) -> Self {
-        let country = session.country();
-
-        let top_tracks: Vec<SpotifyId> = match msg
-            .get_top_track()
-            .iter()
-            .find(|tt| !tt.has_country() || countrylist_contains(tt.get_country(), &country))
-        {
-            Some(tracks) => tracks
-                .get_track()
-                .iter()
-                .filter(|track| track.has_gid())
-                .map(|track| SpotifyId::from_raw(track.get_gid()).unwrap())
-                .collect::<Vec<_>>(),
-            None => Vec::new(),
-        };
-
-        Self {
-            id: SpotifyId::from_raw(msg.get_gid()).unwrap(),
-            name: msg.get_name().to_owned(),
-            top_tracks,
-        }
-    }
-}
-
-// Podcast
-#[async_trait]
-impl Metadata for Episode {
-    type Message = protocol::metadata::Episode;
-
-    async fn request(session: &Session, episode_id: SpotifyId) -> MetadataResult {
-        session
-            .spclient()
-            .get_album_metadata(episode_id)
-            .await
-            .map_err(MetadataError::Http)
-    }
-
-    fn parse(msg: &Self::Message, session: &Session) -> Self {
-        let country = session.country();
-
-        let files = msg
-            .get_audio()
-            .iter()
-            .filter(|file| file.has_file_id())
-            .map(|file| {
-                let mut dst = [0u8; 20];
-                dst.clone_from_slice(file.get_file_id());
-                (file.get_format(), FileId(dst))
-            })
-            .collect();
-
-        let covers = msg
-            .get_cover_image()
-            .get_image()
-            .iter()
-            .filter(|image| image.has_file_id())
-            .map(|image| {
-                let mut dst = [0u8; 20];
-                dst.clone_from_slice(image.get_file_id());
-                FileId(dst)
-            })
-            .collect::<Vec<_>>();
-
-        Self {
-            id: SpotifyId::from_raw(msg.get_gid()).unwrap(),
-            name: msg.get_name().to_owned(),
-            external_url: msg.get_external_url().to_owned(),
-            duration: msg.get_duration().to_owned(),
-            language: msg.get_language().to_owned(),
-            show: SpotifyId::from_raw(msg.get_show().get_gid()).unwrap(),
-            covers,
-            files,
-            available: parse_restrictions(msg.get_restriction(), &country, "premium"),
-            explicit: msg.get_explicit().to_owned(),
-        }
-    }
-}
-
-#[async_trait]
-impl Metadata for Show {
-    type Message = protocol::metadata::Show;
-
-    async fn request(session: &Session, show_id: SpotifyId) -> MetadataResult {
-        session
-            .spclient()
-            .get_show_metadata(show_id)
-            .await
-            .map_err(MetadataError::Http)
-    }
-
-    fn parse(msg: &Self::Message, _: &Session) -> Self {
-        let episodes = msg
-            .get_episode()
-            .iter()
-            .filter(|episode| episode.has_gid())
-            .map(|episode| SpotifyId::from_raw(episode.get_gid()).unwrap())
-            .collect::<Vec<_>>();
-
-        let covers = msg
-            .get_cover_image()
-            .get_image()
-            .iter()
-            .filter(|image| image.has_file_id())
-            .map(|image| {
-                let mut dst = [0u8; 20];
-                dst.clone_from_slice(image.get_file_id());
-                FileId(dst)
-            })
-            .collect::<Vec<_>>();
-
-        Self {
-            id: SpotifyId::from_raw(msg.get_gid()).unwrap(),
-            name: msg.get_name().to_owned(),
-            publisher: msg.get_publisher().to_owned(),
-            episodes,
-            covers,
-        }
-    }
-}
-
-struct StrChunks<'s>(&'s str, usize);
-
-trait StrChunksExt {
-    fn chunks(&self, size: usize) -> StrChunks;
-}
-
-impl StrChunksExt for str {
-    fn chunks(&self, size: usize) -> StrChunks {
-        StrChunks(self, size)
-    }
-}
-
-impl<'s> Iterator for StrChunks<'s> {
-    type Item = &'s str;
-    fn next(&mut self) -> Option<&'s str> {
-        let &mut StrChunks(data, size) = self;
-        if data.is_empty() {
-            None
-        } else {
-            let ret = Some(&data[..size]);
-            self.0 = &data[size..];
-            ret
-        }
-    }
 }

metadata/src/playlist/annotation.rs

@@ -0,0 +1,89 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+
+use protobuf::Message;
+
+use crate::{
+    error::MetadataError,
+    image::TranscodedPictures,
+    request::{MercuryRequest, RequestResult},
+    Metadata,
+};
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+pub use protocol::playlist_annotate3::AbuseReportState;
+
+#[derive(Debug, Clone)]
+pub struct PlaylistAnnotation {
+    pub description: String,
+    pub picture: String,
+    pub transcoded_pictures: TranscodedPictures,
+    pub has_abuse_reporting: bool,
+    pub abuse_report_state: AbuseReportState,
+}
+
+#[async_trait]
+impl Metadata for PlaylistAnnotation {
+    type Message = protocol::playlist_annotate3::PlaylistAnnotation;
+
+    async fn request(session: &Session, playlist_id: SpotifyId) -> RequestResult {
+        let current_user = session.username();
+        Self::request_for_user(session, &current_user, playlist_id).await
+    }
+
+    fn parse(msg: &Self::Message, _: SpotifyId) -> Result<Self, MetadataError> {
+        Ok(Self {
+            description: msg.get_description().to_owned(),
+            picture: msg.get_picture().to_owned(), // TODO: is this a URL or Spotify URI?
+            transcoded_pictures: msg.get_transcoded_picture().try_into()?,
+            has_abuse_reporting: msg.get_is_abuse_reporting_enabled(),
+            abuse_report_state: msg.get_abuse_report_state(),
+        })
+    }
+}
+
+impl PlaylistAnnotation {
+    async fn request_for_user(
+        session: &Session,
+        username: &str,
+        playlist_id: SpotifyId,
+    ) -> RequestResult {
+        let uri = format!(
+            "hm://playlist-annotate/v1/annotation/user/{}/playlist/{}",
+            username,
+            playlist_id.to_base62()
+        );
+        <Self as MercuryRequest>::request(session, &uri).await
+    }
+
+    #[allow(dead_code)]
+    async fn get_for_user(
+        session: &Session,
+        username: &str,
+        playlist_id: SpotifyId,
+    ) -> Result<Self, MetadataError> {
+        let response = Self::request_for_user(session, username, playlist_id).await?;
+        let msg = <Self as Metadata>::Message::parse_from_bytes(&response)?;
+        Self::parse(&msg, playlist_id)
+    }
+}
+
+impl MercuryRequest for PlaylistAnnotation {}
+
+impl TryFrom<&<PlaylistAnnotation as Metadata>::Message> for PlaylistAnnotation {
+    type Error = MetadataError;
+    fn try_from(
+        annotation: &<PlaylistAnnotation as Metadata>::Message,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
+            description: annotation.get_description().to_owned(),
+            picture: annotation.get_picture().to_owned(),
+            transcoded_pictures: annotation.get_transcoded_picture().try_into()?,
+            has_abuse_reporting: annotation.get_is_abuse_reporting_enabled(),
+            abuse_report_state: annotation.get_abuse_report_state(),
+        })
+    }
+}

metadata/src/playlist/attribute.rs

@@ -0,0 +1,195 @@
+use std::collections::HashMap;
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{date::Date, error::MetadataError, image::PictureSizes, util::from_repeated_enum};
+
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+use protocol::playlist4_external::FormatListAttribute as PlaylistFormatAttributeMessage;
+use protocol::playlist4_external::ItemAttributes as PlaylistItemAttributesMessage;
+use protocol::playlist4_external::ItemAttributesPartialState as PlaylistPartialItemAttributesMessage;
+use protocol::playlist4_external::ListAttributes as PlaylistAttributesMessage;
+use protocol::playlist4_external::ListAttributesPartialState as PlaylistPartialAttributesMessage;
+use protocol::playlist4_external::UpdateItemAttributes as PlaylistUpdateItemAttributesMessage;
+use protocol::playlist4_external::UpdateListAttributes as PlaylistUpdateAttributesMessage;
+
+pub use protocol::playlist4_external::ItemAttributeKind as PlaylistItemAttributeKind;
+pub use protocol::playlist4_external::ListAttributeKind as PlaylistAttributeKind;
+
+#[derive(Debug, Clone)]
+pub struct PlaylistAttributes {
+    pub name: String,
+    pub description: String,
+    pub picture: SpotifyId,
+    pub is_collaborative: bool,
+    pub pl3_version: String,
+    pub is_deleted_by_owner: bool,
+    pub client_id: String,
+    pub format: String,
+    pub format_attributes: PlaylistFormatAttribute,
+    pub picture_sizes: PictureSizes,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistAttributeKinds(pub Vec<PlaylistAttributeKind>);
+
+impl Deref for PlaylistAttributeKinds {
+    type Target = Vec<PlaylistAttributeKind>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+from_repeated_enum!(PlaylistAttributeKind, PlaylistAttributeKinds);
+
+#[derive(Debug, Clone)]
+pub struct PlaylistFormatAttribute(pub HashMap<String, String>);
+
+impl Deref for PlaylistFormatAttribute {
+    type Target = HashMap<String, String>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistItemAttributes {
+    pub added_by: String,
+    pub timestamp: Date,
+    pub seen_at: Date,
+    pub is_public: bool,
+    pub format_attributes: PlaylistFormatAttribute,
+    pub item_id: SpotifyId,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistItemAttributeKinds(pub Vec<PlaylistItemAttributeKind>);
+
+impl Deref for PlaylistItemAttributeKinds {
+    type Target = Vec<PlaylistItemAttributeKind>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+from_repeated_enum!(PlaylistItemAttributeKind, PlaylistItemAttributeKinds);
+
+#[derive(Debug, Clone)]
+pub struct PlaylistPartialAttributes {
+    #[allow(dead_code)]
+    values: PlaylistAttributes,
+    #[allow(dead_code)]
+    no_value: PlaylistAttributeKinds,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistPartialItemAttributes {
+    #[allow(dead_code)]
+    values: PlaylistItemAttributes,
+    #[allow(dead_code)]
+    no_value: PlaylistItemAttributeKinds,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistUpdateAttributes {
+    pub new_attributes: PlaylistPartialAttributes,
+    pub old_attributes: PlaylistPartialAttributes,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistUpdateItemAttributes {
+    pub index: i32,
+    pub new_attributes: PlaylistPartialItemAttributes,
+    pub old_attributes: PlaylistPartialItemAttributes,
+}
+
+impl TryFrom<&PlaylistAttributesMessage> for PlaylistAttributes {
+    type Error = MetadataError;
+    fn try_from(attributes: &PlaylistAttributesMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            name: attributes.get_name().to_owned(),
+            description: attributes.get_description().to_owned(),
+            picture: attributes.get_picture().try_into()?,
+            is_collaborative: attributes.get_collaborative(),
+            pl3_version: attributes.get_pl3_version().to_owned(),
+            is_deleted_by_owner: attributes.get_deleted_by_owner(),
+            client_id: attributes.get_client_id().to_owned(),
+            format: attributes.get_format().to_owned(),
+            format_attributes: attributes.get_format_attributes().into(),
+            picture_sizes: attributes.get_picture_size().into(),
+        })
+    }
+}
+
+impl From<&[PlaylistFormatAttributeMessage]> for PlaylistFormatAttribute {
+    fn from(attributes: &[PlaylistFormatAttributeMessage]) -> Self {
+        let format_attributes = attributes
+            .iter()
+            .map(|attribute| {
+                (
+                    attribute.get_key().to_owned(),
+                    attribute.get_value().to_owned(),
+                )
+            })
+            .collect();
+
+        PlaylistFormatAttribute(format_attributes)
+    }
+}
+
+impl TryFrom<&PlaylistItemAttributesMessage> for PlaylistItemAttributes {
+    type Error = MetadataError;
+    fn try_from(attributes: &PlaylistItemAttributesMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            added_by: attributes.get_added_by().to_owned(),
+            timestamp: attributes.get_timestamp().try_into()?,
+            seen_at: attributes.get_seen_at().try_into()?,
+            is_public: attributes.get_public(),
+            format_attributes: attributes.get_format_attributes().into(),
+            item_id: attributes.get_item_id().try_into()?,
+        })
+    }
+}
+impl TryFrom<&PlaylistPartialAttributesMessage> for PlaylistPartialAttributes {
+    type Error = MetadataError;
+    fn try_from(attributes: &PlaylistPartialAttributesMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            values: attributes.get_values().try_into()?,
+            no_value: attributes.get_no_value().into(),
+        })
+    }
+}
+
+impl TryFrom<&PlaylistPartialItemAttributesMessage> for PlaylistPartialItemAttributes {
+    type Error = MetadataError;
+    fn try_from(attributes: &PlaylistPartialItemAttributesMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            values: attributes.get_values().try_into()?,
+            no_value: attributes.get_no_value().into(),
+        })
+    }
+}
+
+impl TryFrom<&PlaylistUpdateAttributesMessage> for PlaylistUpdateAttributes {
+    type Error = MetadataError;
+    fn try_from(update: &PlaylistUpdateAttributesMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            new_attributes: update.get_new_attributes().try_into()?,
+            old_attributes: update.get_old_attributes().try_into()?,
+        })
+    }
+}
+
+impl TryFrom<&PlaylistUpdateItemAttributesMessage> for PlaylistUpdateItemAttributes {
+    type Error = MetadataError;
+    fn try_from(update: &PlaylistUpdateItemAttributesMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            index: update.get_index(),
+            new_attributes: update.get_new_attributes().try_into()?,
+            old_attributes: update.get_old_attributes().try_into()?,
+        })
+    }
+}

metadata/src/playlist/diff.rs

@@ -0,0 +1,29 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+
+use crate::error::MetadataError;
+
+use super::operation::PlaylistOperations;
+
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+use protocol::playlist4_external::Diff as DiffMessage;
+
+#[derive(Debug, Clone)]
+pub struct PlaylistDiff {
+    pub from_revision: SpotifyId,
+    pub operations: PlaylistOperations,
+    pub to_revision: SpotifyId,
+}
+
+impl TryFrom<&DiffMessage> for PlaylistDiff {
+    type Error = MetadataError;
+    fn try_from(diff: &DiffMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            from_revision: diff.get_from_revision().try_into()?,
+            operations: diff.get_ops().try_into()?,
+            to_revision: diff.get_to_revision().try_into()?,
+        })
+    }
+}

metadata/src/playlist/item.rs

@@ -0,0 +1,96 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{date::Date, error::MetadataError, util::try_from_repeated_message};
+
+use super::attribute::{PlaylistAttributes, PlaylistItemAttributes};
+
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+use protocol::playlist4_external::Item as PlaylistItemMessage;
+use protocol::playlist4_external::ListItems as PlaylistItemsMessage;
+use protocol::playlist4_external::MetaItem as PlaylistMetaItemMessage;
+
+#[derive(Debug, Clone)]
+pub struct PlaylistItem {
+    pub id: SpotifyId,
+    pub attributes: PlaylistItemAttributes,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistItems(pub Vec<PlaylistItem>);
+
+impl Deref for PlaylistItems {
+    type Target = Vec<PlaylistItem>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistItemList {
+    pub position: i32,
+    pub is_truncated: bool,
+    pub items: PlaylistItems,
+    pub meta_items: PlaylistMetaItems,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistMetaItem {
+    pub revision: SpotifyId,
+    pub attributes: PlaylistAttributes,
+    pub length: i32,
+    pub timestamp: Date,
+    pub owner_username: String,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistMetaItems(pub Vec<PlaylistMetaItem>);
+
+impl Deref for PlaylistMetaItems {
+    type Target = Vec<PlaylistMetaItem>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl TryFrom<&PlaylistItemMessage> for PlaylistItem {
+    type Error = MetadataError;
+    fn try_from(item: &PlaylistItemMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            id: item.try_into()?,
+            attributes: item.get_attributes().try_into()?,
+        })
+    }
+}
+
+try_from_repeated_message!(PlaylistItemMessage, PlaylistItems);
+
+impl TryFrom<&PlaylistItemsMessage> for PlaylistItemList {
+    type Error = MetadataError;
+    fn try_from(list_items: &PlaylistItemsMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            position: list_items.get_pos(),
+            is_truncated: list_items.get_truncated(),
+            items: list_items.get_items().try_into()?,
+            meta_items: list_items.get_meta_items().try_into()?,
+        })
+    }
+}
+
+impl TryFrom<&PlaylistMetaItemMessage> for PlaylistMetaItem {
+    type Error = MetadataError;
+    fn try_from(item: &PlaylistMetaItemMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            revision: item.try_into()?,
+            attributes: item.get_attributes().try_into()?,
+            length: item.get_length(),
+            timestamp: item.get_timestamp().try_into()?,
+            owner_username: item.get_owner_username().to_owned(),
+        })
+    }
+}
+
+try_from_repeated_message!(PlaylistMetaItemMessage, PlaylistMetaItems);

metadata/src/playlist/list.rs

@@ -0,0 +1,201 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use protobuf::Message;
+
+use crate::{
+    date::Date,
+    error::MetadataError,
+    request::{MercuryRequest, RequestResult},
+    util::try_from_repeated_message,
+    Metadata,
+};
+
+use super::{attribute::PlaylistAttributes, diff::PlaylistDiff, item::PlaylistItemList};
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::{NamedSpotifyId, SpotifyId};
+use librespot_protocol as protocol;
+
+#[derive(Debug, Clone)]
+pub struct Playlist {
+    pub id: NamedSpotifyId,
+    pub revision: SpotifyId,
+    pub length: i32,
+    pub attributes: PlaylistAttributes,
+    pub contents: PlaylistItemList,
+    pub diff: PlaylistDiff,
+    pub sync_result: PlaylistDiff,
+    pub resulting_revisions: Playlists,
+    pub has_multiple_heads: bool,
+    pub is_up_to_date: bool,
+    pub nonces: Vec<i64>,
+    pub timestamp: Date,
+    pub has_abuse_reporting: bool,
+}
+
+#[derive(Debug, Clone)]
+pub struct Playlists(pub Vec<SpotifyId>);
+
+impl Deref for Playlists {
+    type Target = Vec<SpotifyId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct RootPlaylist(pub SelectedListContent);
+
+impl Deref for RootPlaylist {
+    type Target = SelectedListContent;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct SelectedListContent {
+    pub revision: SpotifyId,
+    pub length: i32,
+    pub attributes: PlaylistAttributes,
+    pub contents: PlaylistItemList,
+    pub diff: PlaylistDiff,
+    pub sync_result: PlaylistDiff,
+    pub resulting_revisions: Playlists,
+    pub has_multiple_heads: bool,
+    pub is_up_to_date: bool,
+    pub nonces: Vec<i64>,
+    pub timestamp: Date,
+    pub owner_username: String,
+    pub has_abuse_reporting: bool,
+}
+
+impl Playlist {
+    #[allow(dead_code)]
+    async fn request_for_user(
+        session: &Session,
+        username: &str,
+        playlist_id: SpotifyId,
+    ) -> RequestResult {
+        let uri = format!(
+            "hm://playlist/user/{}/playlist/{}",
+            username,
+            playlist_id.to_base62()
+        );
+        <Self as MercuryRequest>::request(session, &uri).await
+    }
+
+    #[allow(dead_code)]
+    pub async fn get_for_user(
+        session: &Session,
+        username: &str,
+        playlist_id: SpotifyId,
+    ) -> Result<Self, MetadataError> {
+        let response = Self::request_for_user(session, username, playlist_id).await?;
+        let msg = <Self as Metadata>::Message::parse_from_bytes(&response)?;
+        Self::parse(&msg, playlist_id)
+    }
+
+    pub fn tracks(&self) -> Vec<SpotifyId> {
+        let tracks = self
+            .contents
+            .items
+            .iter()
+            .map(|item| item.id)
+            .collect::<Vec<_>>();
+
+        let length = tracks.len();
+        let expected_length = self.length as usize;
+        if length != expected_length {
+            warn!(
+                "Got {} tracks, but the list should contain {} tracks.",
+                length, expected_length,
+            );
+        }
+
+        tracks
+    }
+
+    pub fn name(&self) -> &str {
+        &self.attributes.name
+    }
+}
+
+impl MercuryRequest for Playlist {}
+
+#[async_trait]
+impl Metadata for Playlist {
+    type Message = protocol::playlist4_external::SelectedListContent;
+
+    async fn request(session: &Session, playlist_id: SpotifyId) -> RequestResult {
+        let uri = format!("hm://playlist/v2/playlist/{}", playlist_id.to_base62());
+        <Self as MercuryRequest>::request(session, &uri).await
+    }
+
+    fn parse(msg: &Self::Message, id: SpotifyId) -> Result<Self, MetadataError> {
+        // the playlist proto doesn't contain the id so we decorate it
+        let playlist = SelectedListContent::try_from(msg)?;
+        let id = NamedSpotifyId::from_spotify_id(id, playlist.owner_username);
+
+        Ok(Self {
+            id,
+            revision: playlist.revision,
+            length: playlist.length,
+            attributes: playlist.attributes,
+            contents: playlist.contents,
+            diff: playlist.diff,
+            sync_result: playlist.sync_result,
+            resulting_revisions: playlist.resulting_revisions,
+            has_multiple_heads: playlist.has_multiple_heads,
+            is_up_to_date: playlist.is_up_to_date,
+            nonces: playlist.nonces,
+            timestamp: playlist.timestamp,
+            has_abuse_reporting: playlist.has_abuse_reporting,
+        })
+    }
+}
+
+impl MercuryRequest for RootPlaylist {}
+
+impl RootPlaylist {
+    #[allow(dead_code)]
+    async fn request_for_user(session: &Session, username: &str) -> RequestResult {
+        let uri = format!("hm://playlist/user/{}/rootlist", username,);
+        <Self as MercuryRequest>::request(session, &uri).await
+    }
+
+    #[allow(dead_code)]
+    pub async fn get_root_for_user(
+        session: &Session,
+        username: &str,
+    ) -> Result<Self, MetadataError> {
+        let response = Self::request_for_user(session, username).await?;
+        let msg = protocol::playlist4_external::SelectedListContent::parse_from_bytes(&response)?;
+        Ok(Self(SelectedListContent::try_from(&msg)?))
+    }
+}
+
+impl TryFrom<&<Playlist as Metadata>::Message> for SelectedListContent {
+    type Error = MetadataError;
+    fn try_from(playlist: &<Playlist as Metadata>::Message) -> Result<Self, Self::Error> {
+        Ok(Self {
+            revision: playlist.get_revision().try_into()?,
+            length: playlist.get_length(),
+            attributes: playlist.get_attributes().try_into()?,
+            contents: playlist.get_contents().try_into()?,
+            diff: playlist.get_diff().try_into()?,
+            sync_result: playlist.get_sync_result().try_into()?,
+            resulting_revisions: playlist.get_resulting_revisions().try_into()?,
+            has_multiple_heads: playlist.get_multiple_heads(),
+            is_up_to_date: playlist.get_up_to_date(),
+            nonces: playlist.get_nonces().into(),
+            timestamp: playlist.get_timestamp().try_into()?,
+            owner_username: playlist.get_owner_username().to_owned(),
+            has_abuse_reporting: playlist.get_abuse_reporting_enabled(),
+        })
+    }
+}
+
+try_from_repeated_message!(Vec<u8>, Playlists);

metadata/src/playlist/mod.rs

@@ -0,0 +1,9 @@
+pub mod annotation;
+pub mod attribute;
+pub mod diff;
+pub mod item;
+pub mod list;
+pub mod operation;
+
+pub use annotation::PlaylistAnnotation;
+pub use list::Playlist;

metadata/src/playlist/operation.rs

@@ -0,0 +1,114 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{
+    error::MetadataError,
+    playlist::{
+        attribute::{PlaylistUpdateAttributes, PlaylistUpdateItemAttributes},
+        item::PlaylistItems,
+    },
+    util::try_from_repeated_message,
+};
+
+use librespot_protocol as protocol;
+
+use protocol::playlist4_external::Add as PlaylistAddMessage;
+use protocol::playlist4_external::Mov as PlaylistMoveMessage;
+use protocol::playlist4_external::Op as PlaylistOperationMessage;
+use protocol::playlist4_external::Rem as PlaylistRemoveMessage;
+
+pub use protocol::playlist4_external::Op_Kind as PlaylistOperationKind;
+
+#[derive(Debug, Clone)]
+pub struct PlaylistOperation {
+    pub kind: PlaylistOperationKind,
+    pub add: PlaylistOperationAdd,
+    pub rem: PlaylistOperationRemove,
+    pub mov: PlaylistOperationMove,
+    pub update_item_attributes: PlaylistUpdateItemAttributes,
+    pub update_list_attributes: PlaylistUpdateAttributes,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistOperations(pub Vec<PlaylistOperation>);
+
+impl Deref for PlaylistOperations {
+    type Target = Vec<PlaylistOperation>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistOperationAdd {
+    pub from_index: i32,
+    pub items: PlaylistItems,
+    pub add_last: bool,
+    pub add_first: bool,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistOperationMove {
+    pub from_index: i32,
+    pub length: i32,
+    pub to_index: i32,
+}
+
+#[derive(Debug, Clone)]
+pub struct PlaylistOperationRemove {
+    pub from_index: i32,
+    pub length: i32,
+    pub items: PlaylistItems,
+    pub has_items_as_key: bool,
+}
+
+impl TryFrom<&PlaylistOperationMessage> for PlaylistOperation {
+    type Error = MetadataError;
+    fn try_from(operation: &PlaylistOperationMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            kind: operation.get_kind(),
+            add: operation.get_add().try_into()?,
+            rem: operation.get_rem().try_into()?,
+            mov: operation.get_mov().into(),
+            update_item_attributes: operation.get_update_item_attributes().try_into()?,
+            update_list_attributes: operation.get_update_list_attributes().try_into()?,
+        })
+    }
+}
+
+try_from_repeated_message!(PlaylistOperationMessage, PlaylistOperations);
+
+impl TryFrom<&PlaylistAddMessage> for PlaylistOperationAdd {
+    type Error = MetadataError;
+    fn try_from(add: &PlaylistAddMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            from_index: add.get_from_index(),
+            items: add.get_items().try_into()?,
+            add_last: add.get_add_last(),
+            add_first: add.get_add_first(),
+        })
+    }
+}
+
+impl From<&PlaylistMoveMessage> for PlaylistOperationMove {
+    fn from(mov: &PlaylistMoveMessage) -> Self {
+        Self {
+            from_index: mov.get_from_index(),
+            length: mov.get_length(),
+            to_index: mov.get_to_index(),
+        }
+    }
+}
+
+impl TryFrom<&PlaylistRemoveMessage> for PlaylistOperationRemove {
+    type Error = MetadataError;
+    fn try_from(remove: &PlaylistRemoveMessage) -> Result<Self, Self::Error> {
+        Ok(Self {
+            from_index: remove.get_from_index(),
+            length: remove.get_length(),
+            items: remove.get_items().try_into()?,
+            has_items_as_key: remove.get_items_as_key(),
+        })
+    }
+}

metadata/src/request.rs

@@ -0,0 +1,20 @@
+use crate::error::RequestError;
+
+use librespot_core::session::Session;
+
+pub type RequestResult = Result<bytes::Bytes, RequestError>;
+
+#[async_trait]
+pub trait MercuryRequest {
+    async fn request(session: &Session, uri: &str) -> RequestResult {
+        let response = session.mercury().get(uri).await?;
+        match response.payload.first() {
+            Some(data) => {
+                let data = data.to_vec().into();
+                trace!("Received metadata: {:?}", data);
+                Ok(data)
+            }
+            None => Err(RequestError::Empty),
+        }
+    }
+}

metadata/src/restriction.rs

@@ -0,0 +1,106 @@
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::util::{from_repeated_enum, from_repeated_message};
+
+use librespot_protocol as protocol;
+
+use protocol::metadata::Restriction as RestrictionMessage;
+
+pub use protocol::metadata::Restriction_Catalogue as RestrictionCatalogue;
+pub use protocol::metadata::Restriction_Type as RestrictionType;
+
+#[derive(Debug, Clone)]
+pub struct Restriction {
+    pub catalogues: RestrictionCatalogues,
+    pub restriction_type: RestrictionType,
+    pub catalogue_strs: Vec<String>,
+    pub countries_allowed: Option<Vec<String>>,
+    pub countries_forbidden: Option<Vec<String>>,
+}
+
+#[derive(Debug, Clone)]
+pub struct Restrictions(pub Vec<Restriction>);
+
+impl Deref for Restrictions {
+    type Target = Vec<Restriction>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct RestrictionCatalogues(pub Vec<RestrictionCatalogue>);
+
+impl Deref for RestrictionCatalogues {
+    type Target = Vec<RestrictionCatalogue>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl Restriction {
+    fn parse_country_codes(country_codes: &str) -> Vec<String> {
+        country_codes
+            .chunks(2)
+            .map(|country_code| country_code.to_owned())
+            .collect()
+    }
+}
+
+impl From<&RestrictionMessage> for Restriction {
+    fn from(restriction: &RestrictionMessage) -> Self {
+        let countries_allowed = if restriction.has_countries_allowed() {
+            Some(Self::parse_country_codes(
+                restriction.get_countries_allowed(),
+            ))
+        } else {
+            None
+        };
+
+        let countries_forbidden = if restriction.has_countries_forbidden() {
+            Some(Self::parse_country_codes(
+                restriction.get_countries_forbidden(),
+            ))
+        } else {
+            None
+        };
+
+        Self {
+            catalogues: restriction.get_catalogue().into(),
+            restriction_type: restriction.get_field_type(),
+            catalogue_strs: restriction.get_catalogue_str().to_vec(),
+            countries_allowed,
+            countries_forbidden,
+        }
+    }
+}
+
+from_repeated_message!(RestrictionMessage, Restrictions);
+from_repeated_enum!(RestrictionCatalogue, RestrictionCatalogues);
+
+struct StrChunks<'s>(&'s str, usize);
+
+trait StrChunksExt {
+    fn chunks(&self, size: usize) -> StrChunks;
+}
+
+impl StrChunksExt for str {
+    fn chunks(&self, size: usize) -> StrChunks {
+        StrChunks(self, size)
+    }
+}
+
+impl<'s> Iterator for StrChunks<'s> {
+    type Item = &'s str;
+    fn next(&mut self) -> Option<&'s str> {
+        let &mut StrChunks(data, size) = self;
+        if data.is_empty() {
+            None
+        } else {
+            let ret = Some(&data[..size]);
+            self.0 = &data[size..];
+            ret
+        }
+    }
+}

metadata/src/sale_period.rs

@@ -0,0 +1,37 @@
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::{date::Date, restriction::Restrictions, util::from_repeated_message};
+
+use librespot_protocol as protocol;
+
+use protocol::metadata::SalePeriod as SalePeriodMessage;
+
+#[derive(Debug, Clone)]
+pub struct SalePeriod {
+    pub restrictions: Restrictions,
+    pub start: Date,
+    pub end: Date,
+}
+
+#[derive(Debug, Clone)]
+pub struct SalePeriods(pub Vec<SalePeriod>);
+
+impl Deref for SalePeriods {
+    type Target = Vec<SalePeriod>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl From<&SalePeriodMessage> for SalePeriod {
+    fn from(sale_period: &SalePeriodMessage) -> Self {
+        Self {
+            restrictions: sale_period.get_restriction().into(),
+            start: sale_period.get_start().into(),
+            end: sale_period.get_end().into(),
+        }
+    }
+}
+
+from_repeated_message!(SalePeriodMessage, SalePeriods);

metadata/src/show.rs

@@ -0,0 +1,75 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+
+use crate::{
+    availability::Availabilities, copyright::Copyrights, episode::Episodes, error::RequestError,
+    image::Images, restriction::Restrictions, Metadata, MetadataError, RequestResult,
+};
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+pub use protocol::metadata::Show_ConsumptionOrder as ShowConsumptionOrder;
+pub use protocol::metadata::Show_MediaType as ShowMediaType;
+
+#[derive(Debug, Clone)]
+pub struct Show {
+    pub id: SpotifyId,
+    pub name: String,
+    pub description: String,
+    pub publisher: String,
+    pub language: String,
+    pub is_explicit: bool,
+    pub covers: Images,
+    pub episodes: Episodes,
+    pub copyrights: Copyrights,
+    pub restrictions: Restrictions,
+    pub keywords: Vec<String>,
+    pub media_type: ShowMediaType,
+    pub consumption_order: ShowConsumptionOrder,
+    pub availability: Availabilities,
+    pub trailer_uri: SpotifyId,
+    pub has_music_and_talk: bool,
+}
+
+#[async_trait]
+impl Metadata for Show {
+    type Message = protocol::metadata::Show;
+
+    async fn request(session: &Session, show_id: SpotifyId) -> RequestResult {
+        session
+            .spclient()
+            .get_show_metadata(show_id)
+            .await
+            .map_err(RequestError::Http)
+    }
+
+    fn parse(msg: &Self::Message, _: SpotifyId) -> Result<Self, MetadataError> {
+        Self::try_from(msg)
+    }
+}
+
+impl TryFrom<&<Self as Metadata>::Message> for Show {
+    type Error = MetadataError;
+    fn try_from(show: &<Self as Metadata>::Message) -> Result<Self, Self::Error> {
+        Ok(Self {
+            id: show.try_into()?,
+            name: show.get_name().to_owned(),
+            description: show.get_description().to_owned(),
+            publisher: show.get_publisher().to_owned(),
+            language: show.get_language().to_owned(),
+            is_explicit: show.get_explicit(),
+            covers: show.get_cover_image().get_image().into(),
+            episodes: show.get_episode().try_into()?,
+            copyrights: show.get_copyright().into(),
+            restrictions: show.get_restriction().into(),
+            keywords: show.get_keyword().to_vec(),
+            media_type: show.get_media_type(),
+            consumption_order: show.get_consumption_order(),
+            availability: show.get_availability().into(),
+            trailer_uri: SpotifyId::from_uri(show.get_trailer_uri())?,
+            has_music_and_talk: show.get_music_and_talk(),
+        })
+    }
+}

metadata/src/track.rs

@@ -0,0 +1,150 @@
+use std::convert::{TryFrom, TryInto};
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use chrono::Local;
+use uuid::Uuid;
+
+use crate::{
+    artist::{Artists, ArtistsWithRole},
+    audio::{
+        file::AudioFiles,
+        item::{AudioItem, AudioItemResult, InnerAudioItem},
+    },
+    availability::{Availabilities, UnavailabilityReason},
+    content_rating::ContentRatings,
+    date::Date,
+    error::RequestError,
+    external_id::ExternalIds,
+    restriction::Restrictions,
+    sale_period::SalePeriods,
+    util::try_from_repeated_message,
+    Metadata, MetadataError, RequestResult,
+};
+
+use librespot_core::session::Session;
+use librespot_core::spotify_id::SpotifyId;
+use librespot_protocol as protocol;
+
+#[derive(Debug, Clone)]
+pub struct Track {
+    pub id: SpotifyId,
+    pub name: String,
+    pub album: SpotifyId,
+    pub artists: Artists,
+    pub number: i32,
+    pub disc_number: i32,
+    pub duration: i32,
+    pub popularity: i32,
+    pub is_explicit: bool,
+    pub external_ids: ExternalIds,
+    pub restrictions: Restrictions,
+    pub files: AudioFiles,
+    pub alternatives: Tracks,
+    pub sale_periods: SalePeriods,
+    pub previews: AudioFiles,
+    pub tags: Vec<String>,
+    pub earliest_live_timestamp: Date,
+    pub has_lyrics: bool,
+    pub availability: Availabilities,
+    pub licensor: Uuid,
+    pub language_of_performance: Vec<String>,
+    pub content_ratings: ContentRatings,
+    pub original_title: String,
+    pub version_title: String,
+    pub artists_with_role: ArtistsWithRole,
+}
+
+#[derive(Debug, Clone)]
+pub struct Tracks(pub Vec<SpotifyId>);
+
+impl Deref for Tracks {
+    type Target = Vec<SpotifyId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[async_trait]
+impl InnerAudioItem for Track {
+    async fn get_audio_item(session: &Session, id: SpotifyId) -> AudioItemResult {
+        let track = Self::get(session, id).await?;
+        let alternatives = {
+            if track.alternatives.is_empty() {
+                None
+            } else {
+                Some(track.alternatives.clone())
+            }
+        };
+
+        // TODO: check meaning of earliest_live_timestamp in
+        let availability = if Local::now() < track.earliest_live_timestamp.as_utc() {
+            Err(UnavailabilityReason::Embargo)
+        } else {
+            Self::available_in_country(&track.availability, &track.restrictions, &session.country())
+        };
+
+        Ok(AudioItem {
+            id,
+            spotify_uri: id.to_uri(),
+            files: track.files,
+            name: track.name,
+            duration: track.duration,
+            availability,
+            alternatives,
+        })
+    }
+}
+
+#[async_trait]
+impl Metadata for Track {
+    type Message = protocol::metadata::Track;
+
+    async fn request(session: &Session, track_id: SpotifyId) -> RequestResult {
+        session
+            .spclient()
+            .get_track_metadata(track_id)
+            .await
+            .map_err(RequestError::Http)
+    }
+
+    fn parse(msg: &Self::Message, _: SpotifyId) -> Result<Self, MetadataError> {
+        Self::try_from(msg)
+    }
+}
+
+impl TryFrom<&<Self as Metadata>::Message> for Track {
+    type Error = MetadataError;
+    fn try_from(track: &<Self as Metadata>::Message) -> Result<Self, Self::Error> {
+        Ok(Self {
+            id: track.try_into()?,
+            name: track.get_name().to_owned(),
+            album: track.get_album().try_into()?,
+            artists: track.get_artist().try_into()?,
+            number: track.get_number(),
+            disc_number: track.get_disc_number(),
+            duration: track.get_duration(),
+            popularity: track.get_popularity(),
+            is_explicit: track.get_explicit(),
+            external_ids: track.get_external_id().into(),
+            restrictions: track.get_restriction().into(),
+            files: track.get_file().into(),
+            alternatives: track.get_alternative().try_into()?,
+            sale_periods: track.get_sale_period().into(),
+            previews: track.get_preview().into(),
+            tags: track.get_tags().to_vec(),
+            earliest_live_timestamp: track.get_earliest_live_timestamp().try_into()?,
+            has_lyrics: track.get_has_lyrics(),
+            availability: track.get_availability().into(),
+            licensor: Uuid::from_slice(track.get_licensor().get_uuid())
+                .unwrap_or_else(|_| Uuid::nil()),
+            language_of_performance: track.get_language_of_performance().to_vec(),
+            content_ratings: track.get_content_rating().into(),
+            original_title: track.get_original_title().to_owned(),
+            version_title: track.get_version_title().to_owned(),
+            artists_with_role: track.get_artist_with_role().try_into()?,
+        })
+    }
+}
+
+try_from_repeated_message!(<Track as Metadata>::Message, Tracks);

metadata/src/util.rs

@@ -0,0 +1,39 @@
+macro_rules! from_repeated_message {
+    ($src:ty, $dst:ty) => {
+        impl From<&[$src]> for $dst {
+            fn from(src: &[$src]) -> Self {
+                let result = src.iter().map(From::from).collect();
+                Self(result)
+            }
+        }
+    };
+}
+
+pub(crate) use from_repeated_message;
+
+macro_rules! from_repeated_enum {
+    ($src:ty, $dst:ty) => {
+        impl From<&[$src]> for $dst {
+            fn from(src: &[$src]) -> Self {
+                let result = src.iter().map(|x| <$src>::from(*x)).collect();
+                Self(result)
+            }
+        }
+    };
+}
+
+pub(crate) use from_repeated_enum;
+
+macro_rules! try_from_repeated_message {
+    ($src:ty, $dst:ty) => {
+        impl TryFrom<&[$src]> for $dst {
+            type Error = MetadataError;
+            fn try_from(src: &[$src]) -> Result<Self, Self::Error> {
+                let result: Result<Vec<_>, _> = src.iter().map(TryFrom::try_from).collect();
+                Ok(Self(result?))
+            }
+        }
+    };
+}
+
+pub(crate) use try_from_repeated_message;

metadata/src/video.rs

@@ -0,0 +1,21 @@
+use std::fmt::Debug;
+use std::ops::Deref;
+
+use crate::util::from_repeated_message;
+
+use librespot_core::spotify_id::FileId;
+use librespot_protocol as protocol;
+
+use protocol::metadata::VideoFile as VideoFileMessage;
+
+#[derive(Debug, Clone)]
+pub struct VideoFiles(pub Vec<FileId>);
+
+impl Deref for VideoFiles {
+    type Target = Vec<FileId>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+from_repeated_message!(VideoFileMessage, VideoFiles);

playback/src/player.rs

@@ -24,7 +24,7 @@ use crate::core::session::Session;
 use crate::core::spotify_id::SpotifyId;
 use crate::core::util::SeqGenerator;
 use crate::decoder::{AudioDecoder, AudioError, AudioPacket, PassthroughDecoder, VorbisDecoder};
-use crate::metadata::{AudioItem, FileFormat};
+use crate::metadata::audio::{AudioFileFormat, AudioItem};
 use crate::mixer::AudioFilter;
 
 use crate::{NUM_CHANNELS, SAMPLES_PER_SECOND};
@@ -639,17 +639,17 @@ struct PlayerTrackLoader {
 
 impl PlayerTrackLoader {
     async fn find_available_alternative(&self, audio: AudioItem) -> Option<AudioItem> {
-        if audio.available {
+        if audio.availability.is_ok() {
             Some(audio)
         } else if let Some(alternatives) = &audio.alternatives {
             let alternatives: FuturesUnordered<_> = alternatives
                 .iter()
-                .map(|alt_id| AudioItem::get_audio_item(&self.session, *alt_id))
+                .map(|alt_id| AudioItem::get_file(&self.session, *alt_id))
                 .collect();
 
             alternatives
                 .filter_map(|x| future::ready(x.ok()))
-                .filter(|x| future::ready(x.available))
+                .filter(|x| future::ready(x.availability.is_ok()))
                 .next()
                 .await
         } else {
@@ -657,19 +657,19 @@ impl PlayerTrackLoader {
         }
     }
 
-    fn stream_data_rate(&self, format: FileFormat) -> usize {
+    fn stream_data_rate(&self, format: AudioFileFormat) -> usize {
         match format {
-            FileFormat::OGG_VORBIS_96 => 12 * 1024,
+            AudioFileFormat::OGG_VORBIS_96 => 12 * 1024,
-            FileFormat::OGG_VORBIS_160 => 20 * 1024,
+            AudioFileFormat::OGG_VORBIS_160 => 20 * 1024,
-            FileFormat::OGG_VORBIS_320 => 40 * 1024,
+            AudioFileFormat::OGG_VORBIS_320 => 40 * 1024,
-            FileFormat::MP3_256 => 32 * 1024,
+            AudioFileFormat::MP3_256 => 32 * 1024,
-            FileFormat::MP3_320 => 40 * 1024,
+            AudioFileFormat::MP3_320 => 40 * 1024,
-            FileFormat::MP3_160 => 20 * 1024,
+            AudioFileFormat::MP3_160 => 20 * 1024,
-            FileFormat::MP3_96 => 12 * 1024,
+            AudioFileFormat::MP3_96 => 12 * 1024,
-            FileFormat::MP3_160_ENC => 20 * 1024,
+            AudioFileFormat::MP3_160_ENC => 20 * 1024,
-            FileFormat::AAC_24 => 3 * 1024,
+            AudioFileFormat::AAC_24 => 3 * 1024,
-            FileFormat::AAC_48 => 6 * 1024,
+            AudioFileFormat::AAC_48 => 6 * 1024,
-            FileFormat::FLAC_FLAC => 112 * 1024, // assume 900 kbps on average
+            AudioFileFormat::FLAC_FLAC => 112 * 1024, // assume 900 kbps on average
         }
     }
 
@@ -678,7 +678,7 @@ impl PlayerTrackLoader {
         spotify_id: SpotifyId,
         position_ms: u32,
     ) -> Option<PlayerLoadedTrackData> {
-        let audio = match AudioItem::get_audio_item(&self.session, spotify_id).await {
+        let audio = match AudioItem::get_file(&self.session, spotify_id).await {
             Ok(audio) => audio,
             Err(_) => {
                 error!("Unable to load audio item.");
@@ -686,7 +686,10 @@ impl PlayerTrackLoader {
             }
         };
 
-        info!("Loading <{}> with Spotify URI <{}>", audio.name, audio.uri);
+        info!(
+            "Loading <{}> with Spotify URI <{}>",
+            audio.name, audio.spotify_uri
+        );
 
         let audio = match self.find_available_alternative(audio).await {
             Some(audio) => audio,
@@ -699,22 +702,23 @@ impl PlayerTrackLoader {
         assert!(audio.duration >= 0);
         let duration_ms = audio.duration as u32;
 
-        // (Most) podcasts seem to support only 96 bit Vorbis, so fall back to it
+        // (Most) podcasts seem to support only 96 kbps Vorbis, so fall back to it
+        // TODO: update this logic once we also support MP3 and/or FLAC
         let formats = match self.config.bitrate {
             Bitrate::Bitrate96 => [
-                FileFormat::OGG_VORBIS_96,
+                AudioFileFormat::OGG_VORBIS_96,
-                FileFormat::OGG_VORBIS_160,
+                AudioFileFormat::OGG_VORBIS_160,
-                FileFormat::OGG_VORBIS_320,
+                AudioFileFormat::OGG_VORBIS_320,
             ],
             Bitrate::Bitrate160 => [
-                FileFormat::OGG_VORBIS_160,
+                AudioFileFormat::OGG_VORBIS_160,
-                FileFormat::OGG_VORBIS_96,
+                AudioFileFormat::OGG_VORBIS_96,
-                FileFormat::OGG_VORBIS_320,
+                AudioFileFormat::OGG_VORBIS_320,
             ],
             Bitrate::Bitrate320 => [
-                FileFormat::OGG_VORBIS_320,
+                AudioFileFormat::OGG_VORBIS_320,
-                FileFormat::OGG_VORBIS_160,
+                AudioFileFormat::OGG_VORBIS_160,
-                FileFormat::OGG_VORBIS_96,
+                AudioFileFormat::OGG_VORBIS_96,
             ],
         };