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playlist_repository.go
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playlist_repository.go
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package persistence
import (
"context"
"database/sql"
"encoding/json"
"errors"
"time"
. "github.com/Masterminds/squirrel"
"github.com/deluan/rest"
"github.com/navidrome/navidrome/log"
"github.com/navidrome/navidrome/model"
"github.com/navidrome/navidrome/model/criteria"
"github.com/navidrome/navidrome/utils/slice"
"github.com/pocketbase/dbx"
)
type playlistRepository struct {
sqlRepository
sqlRestful
}
type dbPlaylist struct {
model.Playlist `structs:",flatten"`
Rules sql.NullString `structs:"-"`
}
func (p *dbPlaylist) PostScan() error {
if p.Rules.String != "" {
return json.Unmarshal([]byte(p.Rules.String), &p.Playlist.Rules)
}
return nil
}
func (p dbPlaylist) PostMapArgs(args map[string]any) error {
var err error
if p.Playlist.IsSmartPlaylist() {
args["rules"], err = json.Marshal(p.Playlist.Rules)
return err
}
delete(args, "rules")
return nil
}
func NewPlaylistRepository(ctx context.Context, db dbx.Builder) model.PlaylistRepository {
r := &playlistRepository{}
r.ctx = ctx
r.db = db
r.tableName = "playlist"
r.filterMappings = map[string]filterFunc{
"q": playlistFilter,
"smart": smartPlaylistFilter,
}
return r
}
func playlistFilter(_ string, value interface{}) Sqlizer {
return Or{
substringFilter("playlist.name", value),
substringFilter("playlist.comment", value),
}
}
func smartPlaylistFilter(string, interface{}) Sqlizer {
return Or{
Eq{"rules": ""},
Eq{"rules": nil},
}
}
func (r *playlistRepository) userFilter() Sqlizer {
user := loggedUser(r.ctx)
if user.IsAdmin {
return And{}
}
return Or{
Eq{"public": true},
Eq{"owner_id": user.ID},
}
}
func (r *playlistRepository) CountAll(options ...model.QueryOptions) (int64, error) {
sq := Select().Where(r.userFilter())
return r.count(sq, options...)
}
func (r *playlistRepository) Exists(id string) (bool, error) {
return r.exists(Select().Where(And{Eq{"id": id}, r.userFilter()}))
}
func (r *playlistRepository) Delete(id string) error {
usr := loggedUser(r.ctx)
if !usr.IsAdmin {
pls, err := r.Get(id)
if err != nil {
return err
}
if pls.OwnerID != usr.ID {
return rest.ErrPermissionDenied
}
}
return r.delete(And{Eq{"id": id}, r.userFilter()})
}
func (r *playlistRepository) Put(p *model.Playlist) error {
pls := dbPlaylist{Playlist: *p}
if pls.ID == "" {
pls.CreatedAt = time.Now()
} else {
ok, err := r.Exists(pls.ID)
if err != nil {
return err
}
if !ok {
return model.ErrNotAuthorized
}
}
pls.UpdatedAt = time.Now()
id, err := r.put(pls.ID, pls)
if err != nil {
return err
}
p.ID = id
if p.IsSmartPlaylist() {
r.refreshSmartPlaylist(p)
return nil
}
// Only update tracks if they were specified
if len(pls.Tracks) > 0 {
return r.updateTracks(id, p.MediaFiles())
}
return r.refreshCounters(&pls.Playlist)
}
func (r *playlistRepository) Get(id string) (*model.Playlist, error) {
return r.findBy(And{Eq{"playlist.id": id}, r.userFilter()})
}
func (r *playlistRepository) GetWithTracks(id string, refreshSmartPlaylist bool) (*model.Playlist, error) {
pls, err := r.Get(id)
if err != nil {
return nil, err
}
if refreshSmartPlaylist {
r.refreshSmartPlaylist(pls)
}
tracks, err := r.loadTracks(Select().From("playlist_tracks"), id)
if err != nil {
log.Error(r.ctx, "Error loading playlist tracks ", "playlist", pls.Name, "id", pls.ID, err)
return nil, err
}
pls.Tracks = tracks
return pls, nil
}
func (r *playlistRepository) FindByPath(path string) (*model.Playlist, error) {
return r.findBy(Eq{"path": path})
}
func (r *playlistRepository) findBy(sql Sqlizer) (*model.Playlist, error) {
sel := r.selectPlaylist().Where(sql)
var pls []dbPlaylist
err := r.queryAll(sel, &pls)
if err != nil {
return nil, err
}
if len(pls) == 0 {
return nil, model.ErrNotFound
}
return &pls[0].Playlist, nil
}
func (r *playlistRepository) GetAll(options ...model.QueryOptions) (model.Playlists, error) {
sel := r.selectPlaylist(options...).Where(r.userFilter())
var res []dbPlaylist
err := r.queryAll(sel, &res)
if err != nil {
return nil, err
}
playlists := make(model.Playlists, len(res))
for i, p := range res {
playlists[i] = p.Playlist
}
return playlists, err
}
func (r *playlistRepository) selectPlaylist(options ...model.QueryOptions) SelectBuilder {
return r.newSelect(options...).Join("user on user.id = owner_id").
Columns(r.tableName+".*", "user.user_name as owner_name")
}
func (r *playlistRepository) refreshSmartPlaylist(pls *model.Playlist) bool {
// Only refresh if it is a smart playlist and was not refreshed in the last 5 seconds
if !pls.IsSmartPlaylist() || (pls.EvaluatedAt != nil && time.Since(*pls.EvaluatedAt) < 5*time.Second) {
return false
}
// Never refresh other users' playlists
usr := loggedUser(r.ctx)
if pls.OwnerID != usr.ID {
log.Trace(r.ctx, "Not refreshing smart playlist from other user", "playlist", pls.Name, "id", pls.ID)
return false
}
log.Debug(r.ctx, "Refreshing smart playlist", "playlist", pls.Name, "id", pls.ID)
start := time.Now()
// Remove old tracks
del := Delete("playlist_tracks").Where(Eq{"playlist_id": pls.ID})
_, err := r.executeSQL(del)
if err != nil {
log.Error(r.ctx, "Error deleting old smart playlist tracks", "playlist", pls.Name, "id", pls.ID, err)
return false
}
// Re-populate playlist based on Smart Playlist criteria
rules := *pls.Rules
sq := Select("row_number() over (order by "+rules.OrderBy()+") as id", "'"+pls.ID+"' as playlist_id", "media_file.id as media_file_id").
From("media_file").LeftJoin("annotation on (" +
"annotation.item_id = media_file.id" +
" AND annotation.item_type = 'media_file'" +
" AND annotation.user_id = '" + userId(r.ctx) + "')").
LeftJoin("media_file_genres ag on media_file.id = ag.media_file_id").
LeftJoin("genre on ag.genre_id = genre.id").GroupBy("media_file.id")
sq = r.addCriteria(sq, rules)
insSql := Insert("playlist_tracks").Columns("id", "playlist_id", "media_file_id").Select(sq)
_, err = r.executeSQL(insSql)
if err != nil {
log.Error(r.ctx, "Error refreshing smart playlist tracks", "playlist", pls.Name, "id", pls.ID, err)
return false
}
// Update playlist stats
err = r.refreshCounters(pls)
if err != nil {
log.Error(r.ctx, "Error updating smart playlist stats", "playlist", pls.Name, "id", pls.ID, err)
return false
}
// Update when the playlist was last refreshed (for cache purposes)
updSql := Update(r.tableName).Set("evaluated_at", time.Now()).Where(Eq{"id": pls.ID})
_, err = r.executeSQL(updSql)
if err != nil {
log.Error(r.ctx, "Error updating smart playlist", "playlist", pls.Name, "id", pls.ID, err)
return false
}
log.Debug(r.ctx, "Refreshed playlist", "playlist", pls.Name, "id", pls.ID, "numTracks", pls.SongCount, "elapsed", time.Since(start))
return true
}
func (r *playlistRepository) addCriteria(sql SelectBuilder, c criteria.Criteria) SelectBuilder {
sql = sql.Where(c)
if c.Limit > 0 {
sql = sql.Limit(uint64(c.Limit)).Offset(uint64(c.Offset))
}
if order := c.OrderBy(); order != "" {
sql = sql.OrderBy(order)
}
return sql
}
func (r *playlistRepository) updateTracks(id string, tracks model.MediaFiles) error {
ids := make([]string, len(tracks))
for i := range tracks {
ids[i] = tracks[i].ID
}
return r.updatePlaylist(id, ids)
}
func (r *playlistRepository) updatePlaylist(playlistId string, mediaFileIds []string) error {
if !r.isWritable(playlistId) {
return rest.ErrPermissionDenied
}
// Remove old tracks
del := Delete("playlist_tracks").Where(Eq{"playlist_id": playlistId})
_, err := r.executeSQL(del)
if err != nil {
return err
}
return r.addTracks(playlistId, 1, mediaFileIds)
}
func (r *playlistRepository) addTracks(playlistId string, startingPos int, mediaFileIds []string) error {
// Break the track list in chunks to avoid hitting SQLITE_MAX_FUNCTION_ARG limit
chunks := slice.BreakUp(mediaFileIds, 200)
// Add new tracks, chunk by chunk
pos := startingPos
for i := range chunks {
ins := Insert("playlist_tracks").Columns("playlist_id", "media_file_id", "id")
for _, t := range chunks[i] {
ins = ins.Values(playlistId, t, pos)
pos++
}
_, err := r.executeSQL(ins)
if err != nil {
return err
}
}
return r.refreshCounters(&model.Playlist{ID: playlistId})
}
// refreshCounters updates total playlist duration, size and count
func (r *playlistRepository) refreshCounters(pls *model.Playlist) error {
statsSql := Select(
"coalesce(sum(duration), 0) as duration",
"coalesce(sum(size), 0) as size",
"count(*) as count",
).
From("media_file").
Join("playlist_tracks f on f.media_file_id = media_file.id").
Where(Eq{"playlist_id": pls.ID})
var res struct{ Duration, Size, Count float32 }
err := r.queryOne(statsSql, &res)
if err != nil {
return err
}
// Update playlist's total duration, size and count
upd := Update("playlist").
Set("duration", res.Duration).
Set("size", res.Size).
Set("song_count", res.Count).
Set("updated_at", time.Now()).
Where(Eq{"id": pls.ID})
_, err = r.executeSQL(upd)
if err != nil {
return err
}
pls.SongCount = int(res.Count)
pls.Duration = res.Duration
pls.Size = int64(res.Size)
return nil
}
func (r *playlistRepository) loadTracks(sel SelectBuilder, id string) (model.PlaylistTracks, error) {
tracksQuery := sel.
Columns(
"coalesce(starred, 0) as starred",
"starred_at",
"coalesce(play_count, 0) as play_count",
"play_date",
"coalesce(rating, 0) as rating",
"f.*",
"playlist_tracks.*",
).
LeftJoin("annotation on (" +
"annotation.item_id = media_file_id" +
" AND annotation.item_type = 'media_file'" +
" AND annotation.user_id = '" + userId(r.ctx) + "')").
Join("media_file f on f.id = media_file_id").
Where(Eq{"playlist_id": id}).OrderBy("playlist_tracks.id")
tracks := model.PlaylistTracks{}
err := r.queryAll(tracksQuery, &tracks)
for i, t := range tracks {
tracks[i].MediaFile.ID = t.MediaFileID
}
return tracks, err
}
func (r *playlistRepository) Count(options ...rest.QueryOptions) (int64, error) {
return r.CountAll(r.parseRestOptions(options...))
}
func (r *playlistRepository) Read(id string) (interface{}, error) {
return r.Get(id)
}
func (r *playlistRepository) ReadAll(options ...rest.QueryOptions) (interface{}, error) {
return r.GetAll(r.parseRestOptions(options...))
}
func (r *playlistRepository) EntityName() string {
return "playlist"
}
func (r *playlistRepository) NewInstance() interface{} {
return &model.Playlist{}
}
func (r *playlistRepository) Save(entity interface{}) (string, error) {
pls := entity.(*model.Playlist)
pls.OwnerID = loggedUser(r.ctx).ID
pls.ID = "" // Make sure we don't override an existing playlist
err := r.Put(pls)
if err != nil {
return "", err
}
return pls.ID, err
}
func (r *playlistRepository) Update(id string, entity interface{}, cols ...string) error {
pls := dbPlaylist{Playlist: *entity.(*model.Playlist)}
current, err := r.Get(id)
if err != nil {
return err
}
usr := loggedUser(r.ctx)
if !usr.IsAdmin {
// Only the owner can update the playlist
if current.OwnerID != usr.ID {
return rest.ErrPermissionDenied
}
// Regular users can't change the ownership of a playlist
if pls.OwnerID != "" && pls.OwnerID != usr.ID {
return rest.ErrPermissionDenied
}
}
pls.ID = id
pls.UpdatedAt = time.Now()
_, err = r.put(id, pls, append(cols, "updatedAt")...)
if errors.Is(err, model.ErrNotFound) {
return rest.ErrNotFound
}
return err
}
func (r *playlistRepository) removeOrphans() error {
sel := Select("playlist_tracks.playlist_id as id", "p.name").From("playlist_tracks").
Join("playlist p on playlist_tracks.playlist_id = p.id").
LeftJoin("media_file mf on playlist_tracks.media_file_id = mf.id").
Where(Eq{"mf.id": nil}).
GroupBy("playlist_tracks.playlist_id")
var pls []struct{ Id, Name string }
err := r.queryAll(sel, &pls)
if err != nil {
return err
}
for _, pl := range pls {
log.Debug(r.ctx, "Cleaning-up orphan tracks from playlist", "id", pl.Id, "name", pl.Name)
del := Delete("playlist_tracks").Where(And{
ConcatExpr("media_file_id not in (select id from media_file)"),
Eq{"playlist_id": pl.Id},
})
n, err := r.executeSQL(del)
if n == 0 || err != nil {
return err
}
log.Debug(r.ctx, "Deleted tracks, now reordering", "id", pl.Id, "name", pl.Name, "deleted", n)
// Renumber the playlist if any track was removed
if err := r.renumber(pl.Id); err != nil {
return err
}
}
return nil
}
func (r *playlistRepository) renumber(id string) error {
var ids []string
sq := Select("media_file_id").From("playlist_tracks").Where(Eq{"playlist_id": id}).OrderBy("id")
err := r.queryAllSlice(sq, &ids)
if err != nil {
return err
}
return r.updatePlaylist(id, ids)
}
func (r *playlistRepository) isWritable(playlistId string) bool {
usr := loggedUser(r.ctx)
if usr.IsAdmin {
return true
}
pls, err := r.Get(playlistId)
return err == nil && pls.OwnerID == usr.ID
}
var _ model.PlaylistRepository = (*playlistRepository)(nil)
var _ rest.Repository = (*playlistRepository)(nil)
var _ rest.Persistable = (*playlistRepository)(nil)