use crate::{common::SubSystem, Request, Response};

pub trait MPDServer {

    type Error;

        }

    }

    // -- Query Commands -- //

    // -- Playback Commands -- //

    // handle_consume(ConsumeState),

    // handle_crossfade(Seconds),

    // handle_mix_ramp_db(f32),

    // handle_mix_ramp_delay(Seconds),

    // handle_random(bool),

    // handle_repeat(bool),

    // handle_set_vol(Volume),

    // handle_get_vol,

    // handle_single(SingleState),

    // handle_replay_gain_mode(ReplayGainMode),

    // handle_replay_gain_status,

    // handle_volume(Volume),

    // // -- Playback Control Commands -- //

    // next,

    // pause(Option<bool>),

    // play(SongPosition),

    // play_id(SongId),

    // previous,

    // seek(SongPosition, TimeWithFractions),

    // seek_id(SongId, TimeWithFractions),

    // seek_cur(SeekMode, TimeWithFractions),

    // stop,

    // // -- Queue Commands -- //

    // handle_add(String, Option<SongPosition>),

    // handle_add_id(String, Option<SongPosition>),

    // handle_clear,

    // handle_delete(OneOrRange),

    // handle_delete_id(SongId),

    // handle_move(OneOrRange, SongPosition),

    // handle_move_id(SongId, SongPosition),

    // handle_playlist,

    // handle_playlist_find(Filter, Option<Sort>, Option<WindowRange>),

    // handle_playlist_id(SongId),

    // handle_playlist_info(OneOrRange),

    // handle_playlist_search(Filter, Option<Sort>, Option<WindowRange>),

    // handle_pl_changes(Version, Option<WindowRange>),

    // handle_pl_changes_pos_id(Version, Option<WindowRange>),

    // handle_prio(Priority, WindowRange),

    // handle_prio_id(Priority, Vec<SongId>),

    // handle_range_id(SongId, WindowRange),

    // handle_shuffle(Option<OneOrRange>),

    // handle_swap(SongPosition, SongPosition),

    // handle_swap_id(SongId, SongId),

    // handle_add_tag_id(SongId, TagName, TagValue),

    // handle_clear_tag_id(SongId, TagName),

    // // -- Stored Playlist Commands -- //

    // ListPlaylist(PlaylistName, Option<WindowRange>),

    // ListPlaylistInfo(PlaylistName, Option<WindowRange>),

    // SearchPlaylist(PlaylistName, Filter, Option<WindowRange>),

    // ListPlaylists,

    // Load(PlaylistName, Option<WindowRange>, SongPosition),

    // PlaylistAdd(PlaylistName, Uri, SongPosition),

    // PlaylistClear(PlaylistName),

    // PlaylistDelete(PlaylistName, OneOrRange),

    // PlaylistLength(PlaylistName),

    // // TODO: which type of range?

    // PlaylistMove(PlaylistName, OneOrRange, SongPosition),

    // Rename(PlaylistName, PlaylistName),

    // Rm(PlaylistName),

    // Save(PlaylistName, Option<SaveMode>),

    // // -- Music Database Commands -- //

    // AlbumArt(Uri, Offset),

    // Count(Filter, Option<GroupType>),

    // GetFingerprint(Uri),

    // Find(Filter, Option<Sort>, Option<WindowRange>),

    // FindAdd(Filter, Option<Sort>, Option<WindowRange>, Option<SongPosition>),

    // List(Tag, Filter, Option<GroupType>),

    // #[deprecated]

    // ListAll(Option<Uri>),

    // #[deprecated]

    // ListAllInfo(Option<Uri>),

    // ListFiles(Uri),

    // LsInfo(Option<Uri>),

    // ReadComments(Uri),

    // ReadPicture(Uri, Offset),

    // Search(Filter, Option<Sort>, Option<WindowRange>),

    // SearchAdd(Filter, Option<Sort>, Option<WindowRange>, Option<SongPosition>),

    // SearchAddPl(Filter, Option<Sort>, Option<WindowRange>, Option<SongPosition>),

    // SearchCount(Filter, Option<GroupType>),

    // Update(Option<Uri>),

    // Rescan(Option<Uri>),

    // // -- Mount and Neighbor Commands -- //

    // Mount(Option<Path>, Option<Uri>),

    // Unmount(Path),

    // ListMounts,

    // ListNeighbors,

    // // -- Sticker Commands -- //

    // StickerGet(StickerType, Uri, String),

    // StickerSet(StickerType, Uri, String, String),

    // StickerDelete(StickerType, Uri, String),

    // StickerList(StickerType, Uri),

    // StickerFind(StickerType, Uri, String, Option<Sort>, Option<WindowRange>),

    // StickerFindValue(StickerType, Uri, String, String, Option<Sort>, Option<WindowRange>),

    // StickerNames,

    // StickerTypes,

    // StickerNamesTypes(Option<StickerType>),

    // // -- Connection Commands -- //

    // Close,

    // Kill,

    // Password(String),

    // Ping,

    // BinaryLimit(u64),

    // TagTypes,

    // TagTypesDisable(Vec<Tag>),

    // TagTypesEnable(Vec<Tag>),

    // TagTypesClear,

    // TagTypesAll,

    // TagTypesAvailable,

    // TagTypesReset(Vec<Tag>),

    // Protocol,

    // ProtocolDisable(Vec<Feature>),

    // ProtocolEnable(Vec<Feature>),

    // ProtocolClear,

    // ProtocolAll,

    // ProtocolAvailable,

    // // -- Partition Commands -- //

    // Partition(PartitionName),

    // ListPartitions,

    // NewPartition(PartitionName),

    // DelPartition(PartitionName),

    // MoveOutput(String),

    // // -- Audio Output Commands -- //

    // DisableOutput(AudioOutputId),

    // EnableOutput(AudioOutputId),

    // ToggleOutput(AudioOutputId),

    // Outputs,

    // OutputSet(AudioOutputId, String, String),

    // // -- Reflection Commands -- //

    // Config,

    // Commands,

    // NotCommands,

    // UrlHandlers,

    // Decoders,

    // // -- Client to Client Commands -- //

    // Subscribe(ChannelName),

    // Unsubscribe(ChannelName),

    // Channels,

    // ReadMessages,

    // SendMessage(ChannelName, String),

}

// impl Into<Vec<u8>> for Request {

//     fn into(self) -> Vec<u8> {

//         todo!()

//     }

// }

// #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]

// pub enum SaveMode {

//   Create,

//   Append,

//   Replace,

// }

// #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]

// pub enum SeekMode {

//   Relative,

//   RelativeReverse,

//   Absolute,

// }

// #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]

// pub enum SubSystem {

//   /// The song database has been modified after update.

//   Database,

//   /// A database update has started or finished. If the database was modified during the update, the database event is also emitted.

//   Update,

//   /// A stored playlist has been modified, renamed, created or deleted

//   StoredPlaylist,

//   /// The queue (i.e. the current playlist) has been modified

//   Playlist,

//   /// The player has been started, stopped or seeked or tags of the currently playing song have changed (e.g. received from stream)

//   Player,

//   /// The volume has been changed

//   Mixer,

//   /// An audio output has been added, removed or modified (e.g. renamed, enabled or disabled)

//   Output,

//   /// Options like repeat, random, crossfade, replay gain

//   Options,

//   /// A partition was added, removed or changed

//   Partition,

//   /// The sticker database has been modified.

//   Sticker,

//   /// A client has subscribed or unsubscribed to a channel

//   Subscription,

//   /// A message was received on a channel this client is subscribed to; this event is only emitted when the client’s message queue is empty

//   Message,

//   /// A neighbor was found or lost

//   Neighbor,

//   /// The mount list has changed

//   Mount,

//   /// Other subsystems not covered by the above

//   Other(String),

// }