/
handlers_by_tags.go
575 lines (531 loc) · 16.8 KB
/
handlers_by_tags.go
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package ctrlsubsonic
import (
"errors"
"fmt"
"net/http"
"net/url"
"strconv"
"strings"
"github.com/jinzhu/gorm"
"go.senan.xyz/gonic/server/ctrlsubsonic/params"
"go.senan.xyz/gonic/server/ctrlsubsonic/spec"
"go.senan.xyz/gonic/server/ctrlsubsonic/specid"
"go.senan.xyz/gonic/server/db"
"go.senan.xyz/gonic/server/scrobble/lastfm"
)
func (c *Controller) ServeGetArtists(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
var artists []*db.Artist
q := c.DB.
Select("*, count(sub.id) album_count").
Joins("LEFT JOIN albums sub ON artists.id=sub.tag_artist_id").
Group("artists.id").
Order("artists.name COLLATE NOCASE")
if m := c.getMusicFolder(params); m != "" {
q = q.Where("sub.root_dir=?", m)
}
if err := q.Find(&artists).Error; err != nil {
return spec.NewError(10, "error finding artists: %v", err)
}
// [a-z#] -> 27
indexMap := make(map[string]*spec.Index, 27)
resp := make([]*spec.Index, 0, 27)
for _, artist := range artists {
key := lowerUDecOrHash(artist.IndexName())
if _, ok := indexMap[key]; !ok {
indexMap[key] = &spec.Index{
Name: key,
Artists: []*spec.Artist{},
}
resp = append(resp, indexMap[key])
}
indexMap[key].Artists = append(indexMap[key].Artists,
spec.NewArtistByTags(artist))
}
sub := spec.NewResponse()
sub.Artists = &spec.Artists{
List: resp,
}
return sub
}
func (c *Controller) ServeGetArtist(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
id, err := params.GetID("id")
if err != nil {
return spec.NewError(10, "please provide an `id` parameter")
}
artist := &db.Artist{}
c.DB.
Preload("Albums", func(db *gorm.DB) *gorm.DB {
return db.
Select("*, count(sub.id) child_count, sum(sub.length) duration").
Joins("LEFT JOIN tracks sub ON albums.id=sub.album_id").
Group("albums.id")
}).
First(artist, id.Value)
sub := spec.NewResponse()
sub.Artist = spec.NewArtistByTags(artist)
sub.Artist.Albums = make([]*spec.Album, len(artist.Albums))
for i, album := range artist.Albums {
sub.Artist.Albums[i] = spec.NewAlbumByTags(album, artist)
}
sub.Artist.AlbumCount = len(artist.Albums)
return sub
}
func (c *Controller) ServeGetAlbum(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
id, err := params.GetID("id")
if err != nil {
return spec.NewError(10, "please provide an `id` parameter")
}
album := &db.Album{}
err = c.DB.
Select("albums.*, count(tracks.id) child_count, sum(tracks.length) duration").
Joins("LEFT JOIN tracks ON tracks.album_id=albums.id").
Preload("TagArtist").
Preload("Genres").
Preload("Tracks", func(db *gorm.DB) *gorm.DB {
return db.Order("tracks.tag_disc_number, tracks.tag_track_number")
}).
First(album, id.Value).
Error
if errors.Is(err, gorm.ErrRecordNotFound) {
return spec.NewError(10, "couldn't find an album with that id")
}
sub := spec.NewResponse()
sub.Album = spec.NewAlbumByTags(album, album.TagArtist)
sub.Album.Tracks = make([]*spec.TrackChild, len(album.Tracks))
for i, track := range album.Tracks {
sub.Album.Tracks[i] = spec.NewTrackByTags(track, album)
}
return sub
}
// ServeGetAlbumListTwo handles the getAlbumList2 view.
// changes to this function should be reflected in in _by_folder.go's
// getAlbumList() function
func (c *Controller) ServeGetAlbumListTwo(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
listType, err := params.Get("type")
if err != nil {
return spec.NewError(10, "please provide a `type` parameter")
}
q := c.DB.DB
switch listType {
case "alphabeticalByArtist":
q = q.Joins("JOIN artists ON albums.tag_artist_id=artists.id")
q = q.Order("artists.name")
case "alphabeticalByName":
q = q.Order("tag_title")
case "byYear":
q = q.Where(
"tag_year BETWEEN ? AND ?",
params.GetOrInt("fromYear", 1800),
params.GetOrInt("toYear", 2200))
q = q.Order("tag_year")
case "byGenre":
genre, _ := params.Get("genre")
q = q.Joins("JOIN album_genres ON album_genres.album_id=albums.id")
q = q.Joins("JOIN genres ON genres.id=album_genres.genre_id AND genres.name=?", genre)
case "frequent":
user := r.Context().Value(CtxUser).(*db.User)
q = q.Joins("JOIN plays ON albums.id=plays.album_id AND plays.user_id=?",
user.ID)
q = q.Order("plays.count DESC")
case "newest":
q = q.Order("created_at DESC")
case "random":
q = q.Order(gorm.Expr("random()"))
case "recent":
user := r.Context().Value(CtxUser).(*db.User)
q = q.Joins("JOIN plays ON albums.id=plays.album_id AND plays.user_id=?",
user.ID)
q = q.Order("plays.time DESC")
default:
return spec.NewError(10, "unknown value `%s` for parameter 'type'", listType)
}
if m := c.getMusicFolder(params); m != "" {
q = q.Where("root_dir=?", m)
}
var albums []*db.Album
// TODO: think about removing this extra join to count number
// of children. it might make sense to store that in the db
q.
Select("albums.*, count(tracks.id) child_count, sum(tracks.length) duration").
Joins("LEFT JOIN tracks ON tracks.album_id=albums.id").
Group("albums.id").
Where("albums.tag_artist_id IS NOT NULL").
Offset(params.GetOrInt("offset", 0)).
Limit(params.GetOrInt("size", 10)).
Preload("TagArtist").
Find(&albums)
sub := spec.NewResponse()
sub.AlbumsTwo = &spec.Albums{
List: make([]*spec.Album, len(albums)),
}
for i, album := range albums {
sub.AlbumsTwo.List[i] = spec.NewAlbumByTags(album, album.TagArtist)
}
return sub
}
func (c *Controller) ServeSearchThree(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
query, err := params.Get("query")
if err != nil {
return spec.NewError(10, "please provide a `query` parameter")
}
query = fmt.Sprintf("%%%s%%", strings.TrimSuffix(query, "*"))
results := &spec.SearchResultThree{}
// search "artists"
var artists []*db.Artist
q := c.DB.
Select("*, count(albums.id) album_count").
Group("artists.id").
Where("name LIKE ? OR name_u_dec LIKE ?", query, query).
Joins("JOIN albums ON albums.tag_artist_id=artists.id").
Offset(params.GetOrInt("artistOffset", 0)).
Limit(params.GetOrInt("artistCount", 20))
if m := c.getMusicFolder(params); m != "" {
q = q.Where("albums.root_dir=?", m)
}
if err := q.Find(&artists).Error; err != nil {
return spec.NewError(0, "find artists: %v", err)
}
for _, a := range artists {
results.Artists = append(results.Artists, spec.NewArtistByTags(a))
}
// search "albums"
var albums []*db.Album
q = c.DB.
Preload("TagArtist").
Where("tag_title LIKE ? OR tag_title_u_dec LIKE ?", query, query).
Offset(params.GetOrInt("albumOffset", 0)).
Limit(params.GetOrInt("albumCount", 20))
if m := c.getMusicFolder(params); m != "" {
q = q.Where("root_dir=?", m)
}
if err := q.Find(&albums).Error; err != nil {
return spec.NewError(0, "find albums: %v", err)
}
for _, a := range albums {
results.Albums = append(results.Albums, spec.NewAlbumByTags(a, a.TagArtist))
}
// search tracks
var tracks []*db.Track
q = c.DB.
Preload("Album").
Where("tag_title LIKE ? OR tag_title_u_dec LIKE ?", query, query).
Offset(params.GetOrInt("songOffset", 0)).
Limit(params.GetOrInt("songCount", 20))
if m := c.getMusicFolder(params); m != "" {
q = q.
Joins("JOIN albums ON albums.id=tracks.album_id").
Where("albums.root_dir=?", m)
}
if err := q.Find(&tracks).Error; err != nil {
return spec.NewError(0, "find tracks: %v", err)
}
for _, t := range tracks {
results.Tracks = append(results.Tracks, spec.NewTrackByTags(t, t.Album))
}
sub := spec.NewResponse()
sub.SearchResultThree = results
return sub
}
func (c *Controller) ServeGetArtistInfoTwo(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
id, err := params.GetID("id")
if err != nil {
return spec.NewError(10, "please provide an `id` parameter")
}
var artist db.Artist
err = c.DB.
Where("id=?", id.Value).
Find(&artist).
Error
if errors.Is(err, gorm.ErrRecordNotFound) {
return spec.NewError(70, "artist with id `%s` not found", id)
}
sub := spec.NewResponse()
sub.ArtistInfoTwo = &spec.ArtistInfo{}
if artist.Cover != "" {
sub.ArtistInfoTwo.SmallImageURL = c.genArtistCoverURL(r, &artist, 64)
sub.ArtistInfoTwo.MediumImageURL = c.genArtistCoverURL(r, &artist, 126)
sub.ArtistInfoTwo.LargeImageURL = c.genArtistCoverURL(r, &artist, 256)
}
apiKey, _ := c.DB.GetSetting("lastfm_api_key")
if apiKey == "" {
return sub
}
info, err := lastfm.ArtistGetInfo(apiKey, artist.Name)
if err != nil {
return spec.NewError(0, "fetching artist info: %v", err)
}
sub.ArtistInfoTwo.Biography = info.Bio.Summary
sub.ArtistInfoTwo.MusicBrainzID = info.MBID
sub.ArtistInfoTwo.LastFMURL = info.URL
if artist.Cover == "" {
for _, image := range info.Image {
switch image.Size {
case "small":
sub.ArtistInfoTwo.SmallImageURL = image.Text
case "medium":
sub.ArtistInfoTwo.MediumImageURL = image.Text
case "large":
sub.ArtistInfoTwo.LargeImageURL = image.Text
}
}
}
count := params.GetOrInt("count", 20)
inclNotPresent := params.GetOrBool("includeNotPresent", false)
for i, similarInfo := range info.Similar.Artists {
if i == count {
break
}
var artist db.Artist
err = c.DB.
Select("artists.*, count(albums.id) album_count").
Where("name=?", similarInfo.Name).
Joins("LEFT JOIN albums ON artists.id=albums.tag_artist_id").
Group("artists.id").
Find(&artist).
Error
if errors.Is(err, gorm.ErrRecordNotFound) && !inclNotPresent {
continue
}
similar := &spec.SimilarArtist{
ID: &specid.ID{},
}
if artist.ID != 0 {
similar.ID = artist.SID()
}
similar.Name = similarInfo.Name
similar.AlbumCount = artist.AlbumCount
sub.ArtistInfoTwo.SimilarArtist = append(
sub.ArtistInfoTwo.SimilarArtist, similar)
}
return sub
}
func (c *Controller) ServeGetGenres(r *http.Request) *spec.Response {
var genres []*db.Genre
c.DB.
Select(`*,
(SELECT count(1) FROM album_genres WHERE genre_id=genres.id) album_count,
(SELECT count(1) FROM track_genres WHERE genre_id=genres.id) track_count`).
Group("genres.id").
Find(&genres)
sub := spec.NewResponse()
sub.Genres = &spec.Genres{
List: make([]*spec.Genre, len(genres)),
}
for i, genre := range genres {
sub.Genres.List[i] = spec.NewGenre(genre)
}
return sub
}
func (c *Controller) ServeGetSongsByGenre(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
genre, err := params.Get("genre")
if err != nil {
return spec.NewError(10, "please provide an `genre` parameter")
}
var tracks []*db.Track
q := c.DB.
Joins("JOIN albums ON tracks.album_id=albums.id").
Joins("JOIN track_genres ON track_genres.track_id=tracks.id").
Joins("JOIN genres ON track_genres.genre_id=genres.id AND genres.name=?", genre).
Preload("Album").
Preload("Album.TagArtist").
Offset(params.GetOrInt("offset", 0)).
Limit(params.GetOrInt("count", 10))
if m := c.getMusicFolder(params); m != "" {
q = q.Where("albums.root_dir=?", m)
}
if err := q.Find(&tracks).Error; err != nil {
return spec.NewError(0, "error finding tracks: %v", err)
}
sub := spec.NewResponse()
sub.TracksByGenre = &spec.TracksByGenre{
List: make([]*spec.TrackChild, len(tracks)),
}
for i, track := range tracks {
sub.TracksByGenre.List[i] = spec.NewTrackByTags(track, track.Album)
}
return sub
}
func (c *Controller) ServeGetStarredTwo(r *http.Request) *spec.Response {
sub := spec.NewResponse()
sub.StarredTwo = &spec.StarredTwo{
Artists: []*spec.Artist{},
Albums: []*spec.Album{},
Tracks: []*spec.TrackChild{},
}
return sub
}
func (c *Controller) genArtistCoverURL(r *http.Request, artist *db.Artist, size int) string {
coverURL, _ := url.Parse(c.BaseURL(r))
coverURL.Path = c.Path("/rest/getCoverArt")
query := r.URL.Query()
query.Set("id", artist.SID().String())
query.Set("size", strconv.Itoa(size))
coverURL.RawQuery = query.Encode()
return coverURL.String()
}
func (c *Controller) ServeGetTopSongs(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
count := params.GetOrInt("count", 10)
artistName, err := params.Get("artist")
if err != nil {
return spec.NewError(10, "please provide an `artist` parameter")
}
var artist db.Artist
if err := c.DB.Where("name=?", artistName).Find(&artist).Error; err != nil {
return spec.NewError(0, "finding artist by name: %v", err)
}
apiKey, _ := c.DB.GetSetting("lastfm_api_key")
if apiKey == "" {
return spec.NewResponse()
}
topTracks, err := lastfm.ArtistGetTopTracks(apiKey, artist.Name)
if err != nil {
return spec.NewError(0, "fetching artist top tracks: %v", err)
}
if len(topTracks.Tracks) == 0 {
return spec.NewError(70, "no top tracks found for artist: %v", artist)
}
topTrackNames := make([]string, len(topTracks.Tracks))
for i, t := range topTracks.Tracks {
topTrackNames[i] = t.Name
}
var tracks []*db.Track
err = c.DB.
Preload("Album").
Where("artist_id=? AND tracks.tag_title IN (?)", artist.ID, topTrackNames).
Limit(count).
Find(&tracks).
Error
if err != nil {
return spec.NewError(0, "error finding tracks: %v", err)
}
if len(tracks) == 0 {
return spec.NewError(70, "no tracks found matchind last fm top songs for artist: %v", artist)
}
sub := spec.NewResponse()
sub.TopSongs = &spec.TopSongs{
Tracks: make([]*spec.TrackChild, len(tracks)),
}
for i, track := range tracks {
sub.TopSongs.Tracks[i] = spec.NewTrackByTags(track, track.Album)
}
return sub
}
func (c *Controller) ServeGetSimilarSongs(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
count := params.GetOrInt("count", 10)
id, err := params.GetID("id")
if err != nil || id.Type != specid.Track {
return spec.NewError(10, "please provide an track `id` parameter")
}
apiKey, _ := c.DB.GetSetting("lastfm_api_key")
if apiKey == "" {
return spec.NewResponse()
}
var track db.Track
err = c.DB.
Preload("Artist").
Preload("Album").
Where("id=?", id.Value).
First(&track).
Error
if errors.Is(err, gorm.ErrRecordNotFound) {
return spec.NewError(10, "couldn't find a track with that id")
}
similarTracks, err := lastfm.TrackGetSimilarTracks(apiKey, track.Artist.Name, track.TagTitle)
if err != nil {
return spec.NewError(0, "fetching track similar tracks: %v", err)
}
if len(similarTracks.Tracks) == 0 {
return spec.NewError(70, "no similar songs found for track: %v", track.TagTitle)
}
similarTrackNames := make([]string, len(similarTracks.Tracks))
for i, t := range similarTracks.Tracks {
similarTrackNames[i] = t.Name
}
var tracks []*db.Track
err = c.DB.
Preload("Artist").
Preload("Album").
Select("tracks.*").
Where("tracks.tag_title IN (?)", similarTrackNames).
Order(gorm.Expr("random()")).
Limit(count).
Find(&tracks).
Error
if err != nil {
return spec.NewError(0, "error finding tracks: %v", err)
}
if len(tracks) == 0 {
return spec.NewError(70, "no similar song could be match with collection in database: %v", track.TagTitle)
}
sub := spec.NewResponse()
sub.SimilarSongs = &spec.SimilarSongs{
Tracks: make([]*spec.TrackChild, len(tracks)),
}
for i, track := range tracks {
sub.SimilarSongs.Tracks[i] = spec.NewTrackByTags(track, track.Album)
}
return sub
}
func (c *Controller) ServeGetSimilarSongsTwo(r *http.Request) *spec.Response {
params := r.Context().Value(CtxParams).(params.Params)
count := params.GetOrInt("count", 10)
id, err := params.GetID("id")
if err != nil || id.Type != specid.Artist {
return spec.NewError(10, "please provide an artist `id` parameter")
}
apiKey, _ := c.DB.GetSetting("lastfm_api_key")
if apiKey == "" {
return spec.NewResponse()
}
var artist db.Artist
err = c.DB.
Where("id=?", id.Value).
First(&artist).
Error
if errors.Is(err, gorm.ErrRecordNotFound) {
return spec.NewError(0, "artist with id `%s` not found", id)
}
similarArtists, err := lastfm.ArtistGetSimilar(apiKey, artist.Name)
if err != nil {
return spec.NewError(0, "fetching artist similar artists: %v", err)
}
if len(similarArtists.Artists) == 0 {
return spec.NewError(0, "no similar artist found for: %v", artist.Name)
}
artistNames := make([]string, len(similarArtists.Artists))
for i, similarArtist := range similarArtists.Artists {
artistNames[i] = similarArtist.Name
}
var tracks []*db.Track
err = c.DB.
Preload("Album").
Joins("JOIN artists on tracks.artist_id=artists.id").
Where("artists.name IN (?)", artistNames).
Order(gorm.Expr("random()")).
Limit(count).
Find(&tracks).
Error
if err != nil {
return spec.NewError(0, "error finding tracks: %v", err)
}
if len(tracks) == 0 {
return spec.NewError(70, "no similar song could be match with collection in database: %v", artist.Name)
}
sub := spec.NewResponse()
sub.SimilarSongsTwo = &spec.SimilarSongsTwo{
Tracks: make([]*spec.TrackChild, len(tracks)),
}
for i, track := range tracks {
sub.SimilarSongsTwo.Tracks[i] = spec.NewTrackByTags(track, track.Album)
}
return sub
}