feat: add multi folder support

closes #50
2021-11-03 23:15:09 +00:00
parent fa587fc7de
commit 40cd031b05
32 changed files with 744 additions and 606 deletions
--- a/cmd/gonic/gonic.go
+++ b/cmd/gonic/gonic.go
@@ -30,7 +30,6 @@ const (
 func main() {
 	set := flag.NewFlagSet(gonic.Name, flag.ExitOnError)
 	confListenAddr := set.String("listen-addr", "0.0.0.0:4747", "listen address (optional)")
-	confMusicPath := set.String("music-path", "", "path to music")
 	confPodcastPath := set.String("podcast-path", "", "path to podcasts")
 	confCachePath := set.String("cache-path", "", "path to cache")
 	confDBPath := set.String("db-path", "gonic.db", "path to database (optional)")
@@ -40,6 +39,10 @@ func main() {
 	confGenreSplit := set.String("genre-split", "\n", "character or string to split genre tag data on (optional)")
 	confHTTPLog := set.Bool("http-log", true, "http request logging (optional)")
 	confShowVersion := set.Bool("version", false, "show gonic version")
+
+	var confMusicPaths musicPaths
+	set.Var(&confMusicPaths, "music-path", "path to music")
+
 	_ = set.String("config-path", "", "path to config (optional)")

 	if err := ff.Parse(set, os.Args[1:],
@@ -62,8 +65,13 @@ func main() {
 		log.Printf("    %-15s %s\n", f.Name, value)
 	})

-	if _, err := os.Stat(*confMusicPath); os.IsNotExist(err) {
-		log.Fatal("please provide a valid music directory")
+	if len(confMusicPaths) == 0 {
+		log.Fatalf("please provide a music directory")
+	}
+	for _, confMusicPath := range confMusicPaths {
+		if _, err := os.Stat(confMusicPath); os.IsNotExist(err) {
+			log.Fatalf("music directory %q not found", confMusicPath)
+		}
 	}
 	if _, err := os.Stat(*confPodcastPath); os.IsNotExist(err) {
 		log.Fatal("please provide a valid podcast directory")
@@ -90,13 +98,20 @@ func main() {
 	if err != nil {
 		log.Fatalf("error opening database: %v\n", err)
 	}
-	defer db.Close()
+	defer dbc.Close()
+
+	err = dbc.Migrate(db.MigrationContext{
+		OriginalMusicPath: confMusicPaths[0],
+	})
+	if err != nil {
+		log.Panicf("error migrating database: %v\n", err)
+	}

 	proxyPrefixExpr := regexp.MustCompile(`^\/*(.*?)\/*$`)
 	*confProxyPrefix = proxyPrefixExpr.ReplaceAllString(*confProxyPrefix, `/$1`)
 	server, err := server.New(server.Options{
-		DB:             db,
-		MusicPath:      *confMusicPath,
+		DB:             dbc,
+		MusicPaths:     confMusicPaths,
 		CachePath:      cacheDirAudio,
 		CoverCachePath: cacheDirCovers,
 		ProxyPrefix:    *confProxyPrefix,
@@ -125,3 +140,14 @@ func main() {
 		log.Panicf("error in job: %v", err)
 	}
 }
+
+type musicPaths []string
+
+func (m musicPaths) String() string {
+	return strings.Join(m, ", ")
+}
+
+func (m *musicPaths) Set(value string) error {
+	*m = append(*m, value)
+	return nil
+}
--- a/server/ctrladmin/handlers.go
+++ b/server/ctrladmin/handlers.go
@@ -139,10 +139,7 @@ func (c *Controller) ServeChangeOwnPasswordDo(r *http.Request) *Response {
 func (c *Controller) ServeLinkLastFMDo(r *http.Request) *Response {
 	token := r.URL.Query().Get("token")
 	if token == "" {
-		return &Response{
-			err:  "please provide a token",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a token"}
 	}
 	apiKey, err := c.DB.GetSetting("lastfm_api_key")
 	if err != nil {
@@ -199,17 +196,11 @@ func (c *Controller) ServeUnlinkListenBrainzDo(r *http.Request) *Response {
 func (c *Controller) ServeChangeUsername(r *http.Request) *Response {
 	username := r.URL.Query().Get("user")
 	if username == "" {
-		return &Response{
-			err:  "please provide a username",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a username"}
 	}
 	user := c.DB.GetUserByName(username)
 	if user == nil {
-		return &Response{
-			err:  "couldn't find a user with that name",
-			code: 400,
-		}
+		return &Response{code: 400, err: "couldn't find a user with that name"}
 	}
 	data := &templateData{}
 	data.SelectedUser = user
@@ -237,17 +228,11 @@ func (c *Controller) ServeChangeUsernameDo(r *http.Request) *Response {
 func (c *Controller) ServeChangePassword(r *http.Request) *Response {
 	username := r.URL.Query().Get("user")
 	if username == "" {
-		return &Response{
-			err:  "please provide a username",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a username"}
 	}
 	user := c.DB.GetUserByName(username)
 	if user == nil {
-		return &Response{
-			err:  "couldn't find a user with that name",
-			code: 400,
-		}
+		return &Response{code: 400, err: "couldn't find a user with that name"}
 	}
 	data := &templateData{}
 	data.SelectedUser = user
@@ -276,17 +261,11 @@ func (c *Controller) ServeChangePasswordDo(r *http.Request) *Response {
 func (c *Controller) ServeDeleteUser(r *http.Request) *Response {
 	username := r.URL.Query().Get("user")
 	if username == "" {
-		return &Response{
-			err:  "please provide a username",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a username"}
 	}
 	user := c.DB.GetUserByName(username)
 	if user == nil {
-		return &Response{
-			err:  "couldn't find a user with that name",
-			code: 400,
-		}
+		return &Response{code: 400, err: "couldn't find a user with that name"}
 	}
 	data := &templateData{}
 	data.SelectedUser = user
@@ -421,10 +400,7 @@ func (c *Controller) ServeDeleteTranscodePrefDo(r *http.Request) *Response {
 	user := r.Context().Value(CtxUser).(*db.User)
 	client := r.URL.Query().Get("client")
 	if client == "" {
-		return &Response{
-			err:  "please provide a client",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a client"}
 	}
 	c.DB.
 		Where("user_id=? AND client=?", user.ID, client).
@@ -459,16 +435,10 @@ func (c *Controller) ServePodcastAddDo(r *http.Request) *Response {
 func (c *Controller) ServePodcastDownloadDo(r *http.Request) *Response {
 	id, err := strconv.Atoi(r.URL.Query().Get("id"))
 	if err != nil {
-		return &Response{
-			err:  "please provide a valid podcast id",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a valid podcast id"}
 	}
 	if err := c.Podcasts.DownloadPodcastAll(id); err != nil {
-		return &Response{
-			err:  "please provide a valid podcast id",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a valid podcast id"}
 	}
 	return &Response{
 		redirect: "/admin/home",
@@ -479,10 +449,7 @@ func (c *Controller) ServePodcastDownloadDo(r *http.Request) *Response {
 func (c *Controller) ServePodcastUpdateDo(r *http.Request) *Response {
 	id, err := strconv.Atoi(r.URL.Query().Get("id"))
 	if err != nil {
-		return &Response{
-			err:  "please provide a valid podcast id",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a valid podcast id"}
 	}
 	setting := db.PodcastAutoDownload(r.FormValue("setting"))
 	var message string
@@ -492,10 +459,7 @@ func (c *Controller) ServePodcastUpdateDo(r *http.Request) *Response {
 	case db.PodcastAutoDownloadNone:
 		message = "future podcast episodes will not be downloaded"
 	default:
-		return &Response{
-			err:  "please provide a valid podcast download type",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a valid podcast download type"}
 	}
 	if err := c.Podcasts.SetAutoDownload(id, setting); err != nil {
 		return &Response{
@@ -513,16 +477,10 @@ func (c *Controller) ServePodcastDeleteDo(r *http.Request) *Response {
 	user := r.Context().Value(CtxUser).(*db.User)
 	id, err := strconv.Atoi(r.URL.Query().Get("id"))
 	if err != nil {
-		return &Response{
-			err:  "please provide a valid podcast id",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a valid podcast id"}
 	}
 	if err := c.Podcasts.DeletePodcast(user.ID, id); err != nil {
-		return &Response{
-			err:  "please provide a valid podcast id",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a valid podcast id"}
 	}
 	return &Response{
 		redirect: "/admin/home",
--- a/server/ctrladmin/handlers_playlist.go
+++ b/server/ctrladmin/handlers_playlist.go
@@ -18,16 +18,16 @@ var (
 	errPlaylistNoMatch = errors.New("couldn't match track")
 )

-func playlistParseLine(c *Controller, path string) (int, error) {
-	if strings.HasPrefix(path, "#") || strings.TrimSpace(path) == "" {
+func playlistParseLine(c *Controller, absPath string) (int, error) {
+	if strings.HasPrefix(absPath, "#") || strings.TrimSpace(absPath) == "" {
 		return 0, nil
 	}
 	var track db.Track
 	query := c.DB.Raw(`
 		SELECT tracks.id FROM TRACKS
 		JOIN albums ON tracks.album_id=albums.id
-		WHERE (? || '/' || albums.left_path || albums.right_path || '/' || tracks.filename)=?`,
-		c.MusicPath, path)
+		WHERE (albums.root_dir || '/' || albums.left_path || albums.right_path || '/' || tracks.filename)=?`,
+		absPath)
 	err := query.First(&track).Error
 	switch {
 	case errors.Is(err, gorm.ErrRecordNotFound):
@@ -95,10 +95,7 @@ func (c *Controller) ServeUploadPlaylist(r *http.Request) *Response {

 func (c *Controller) ServeUploadPlaylistDo(r *http.Request) *Response {
 	if err := r.ParseMultipartForm((1 << 10) * 24); err != nil {
-		return &Response{
-			err:  "couldn't parse mutlipart",
-			code: 500,
-		}
+		return &Response{code: 500, err: "couldn't parse mutlipart"}
 	}
 	user := r.Context().Value(CtxUser).(*db.User)
 	var playlistCount int
@@ -123,10 +120,7 @@ func (c *Controller) ServeDeletePlaylistDo(r *http.Request) *Response {
 	user := r.Context().Value(CtxUser).(*db.User)
 	id, err := strconv.Atoi(r.URL.Query().Get("id"))
 	if err != nil {
-		return &Response{
-			err:  "please provide a valid id",
-			code: 400,
-		}
+		return &Response{code: 400, err: "please provide a valid id"}
 	}
 	c.DB.
 		Where("user_id=? AND id=?", user.ID, id).
--- a/server/ctrlbase/ctrl.go
+++ b/server/ctrlbase/ctrl.go
@@ -46,7 +46,6 @@ func statusToBlock(code int) string {

 type Controller struct {
 	DB          *db.DB
-	MusicPath   string
 	Scanner     *scanner.Scanner
 	ProxyPrefix string
 }
--- a/server/ctrlsubsonic/ctrl_test.go
+++ b/server/ctrlsubsonic/ctrl_test.go
@@ -55,15 +55,14 @@ func makeHTTPMock(query url.Values) (*httptest.ResponseRecorder, *http.Request)
 func runQueryCases(t *testing.T, contr *Controller, h handlerSubsonic, cases []*queryCase) {
 	t.Helper()
 	for _, qc := range cases {
-		qc := qc // pin
 		t.Run(qc.expectPath, func(t *testing.T) {
-			t.Parallel()
 			rr, req := makeHTTPMock(qc.params)
 			contr.H(h).ServeHTTP(rr, req)
 			body := rr.Body.String()
 			if status := rr.Code; status != http.StatusOK {
 				t.Fatalf("didn't give a 200\n%s", body)
 			}
+
 			goldenPath := makeGoldenPath(t.Name())
 			goldenRegen := os.Getenv("GONIC_REGEN")
 			if goldenRegen == "*" || (goldenRegen != "" && strings.HasPrefix(t.Name(), goldenRegen)) {
@@ -86,11 +85,10 @@ func runQueryCases(t *testing.T, contr *Controller, h handlerSubsonic, cases []*
 				diffOpts = append(diffOpts, jd.SET)
 			}
 			diff := expected.Diff(actual, diffOpts...)
-			// pass or fail
-			if len(diff) == 0 {
-				return
-			}
+
+			if len(diff) > 0 {
 				t.Errorf("\u001b[31;1mdiffering json\u001b[0m\n%s", diff.Render())
+			}
 		})
 	}
 }
--- a/server/ctrlsubsonic/handlers_by_folder.go
+++ b/server/ctrlsubsonic/handlers_by_folder.go
@@ -12,18 +12,27 @@ import (
 	"go.senan.xyz/gonic/server/db"
 )

-// the subsonic spec metions "artist" a lot when talking about the
+// the subsonic spec mentions "artist" a lot when talking about the
 // browse by folder endpoints. but since we're not browsing by tag
 // we can't access artists. so instead we'll consider the artist of
 // an track to be the it's respective folder that comes directly
 // under the root directory

 func (c *Controller) ServeGetIndexes(r *http.Request) *spec.Response {
+	params := r.Context().Value(CtxParams).(params.Params)
+	rootQ := c.DB.
+		Select("id").
+		Model(&db.Album{}).
+		Where("parent_id IS NULL")
+	if m, _ := params.Get("musicFolderId"); m != "" {
+		rootQ = rootQ.
+			Where("root_dir=?", m)
+	}
 	var folders []*db.Album
 	c.DB.
 		Select("*, count(sub.id) child_count").
 		Joins("LEFT JOIN albums sub ON albums.id=sub.parent_id").
-		Where("albums.parent_id=1").
+		Where("albums.parent_id IN ?", rootQ.SubQuery()).
 		Group("albums.id").
 		Order("albums.right_path COLLATE NOCASE").
 		Find(&folders)
@@ -31,17 +40,15 @@ func (c *Controller) ServeGetIndexes(r *http.Request) *spec.Response {
 	indexMap := make(map[string]*spec.Index, 27)
 	resp := make([]*spec.Index, 0, 27)
 	for _, folder := range folders {
-		i := lowerUDecOrHash(folder.IndexRightPath())
-		index, ok := indexMap[i]
-		if !ok {
-			index = &spec.Index{
-				Name:    i,
+		key := lowerUDecOrHash(folder.IndexRightPath())
+		if _, ok := indexMap[key]; !ok {
+			indexMap[key] = &spec.Index{
+				Name:    key,
 				Artists: []*spec.Artist{},
 			}
-			indexMap[i] = index
-			resp = append(resp, index)
+			resp = append(resp, indexMap[key])
 		}
-		index.Artists = append(index.Artists,
+		indexMap[key].Artists = append(indexMap[key].Artists,
 			spec.NewArtistByFolder(folder))
 	}
 	sub := spec.NewResponse()
@@ -137,6 +144,10 @@ func (c *Controller) ServeGetAlbumList(r *http.Request) *spec.Response {
 	default:
 		return spec.NewError(10, "unknown value `%s` for parameter 'type'", v)
 	}
+
+	if m, _ := params.Get("musicFolderId"); m != "" {
+		q = q.Where("root_dir=?", m)
+	}
 	var folders []*db.Album
 	// TODO: think about removing this extra join to count number
 	// of children. it might make sense to store that in the db
@@ -166,50 +177,65 @@ func (c *Controller) ServeSearchTwo(r *http.Request) *spec.Response {
 		return spec.NewError(10, "please provide a `query` parameter")
 	}
 	query = fmt.Sprintf("%%%s%%", strings.TrimSuffix(query, "*"))
+
 	results := &spec.SearchResultTwo{}
+
 	// search "artists"
-	var artists []*db.Album
-	c.DB.
-		Where(`
-			parent_id=1
-			AND (	right_path LIKE ? OR
-					right_path_u_dec LIKE ?	)`,
-			query, query).
-		Offset(params.GetOrInt("artistOffset", 0)).
-		Limit(params.GetOrInt("artistCount", 20)).
-		Find(&artists)
-	for _, a := range artists {
-		results.Artists = append(results.Artists,
-			spec.NewDirectoryByFolder(a, nil))
+	rootQ := c.DB.
+		Select("id").
+		Model(&db.Album{}).
+		Where("parent_id IS NULL")
+	if m, _ := params.Get("musicFolderId"); m != "" {
+		rootQ = rootQ.Where("root_dir=?", m)
 	}
+
+	var artists []*db.Album
+	q := c.DB.
+		Where(`parent_id IN ? AND (right_path LIKE ? OR right_path_u_dec LIKE ?)`, rootQ.SubQuery(), query, query).
+		Offset(params.GetOrInt("artistOffset", 0)).
+		Limit(params.GetOrInt("artistCount", 20))
+	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.NewDirectoryByFolder(a, nil))
+	}
+
 	// search "albums"
 	var albums []*db.Album
-	c.DB.
-		Where(`
-			tag_artist_id IS NOT NULL
-			AND (	right_path LIKE ? OR
-					right_path_u_dec LIKE ?	)`,
-			query, query).
+	q = c.DB.
+		Where(`tag_artist_id IS NOT NULL AND (right_path LIKE ? OR right_path_u_dec LIKE ?)`, query, query).
 		Offset(params.GetOrInt("albumOffset", 0)).
-		Limit(params.GetOrInt("albumCount", 20)).
-		Find(&albums)
+		Limit(params.GetOrInt("albumCount", 20))
+	if m, _ := params.Get("musicFolderId"); 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.NewTCAlbumByFolder(a))
 	}
+
 	// search tracks
 	var tracks []*db.Track
-	c.DB.
+	q = c.DB.
 		Preload("Album").
-		Where("filename LIKE ? OR filename_u_dec LIKE ?",
-			query, query).
+		Where("filename LIKE ? OR filename_u_dec LIKE ?", query, query).
 		Offset(params.GetOrInt("songOffset", 0)).
-		Limit(params.GetOrInt("songCount", 20)).
-		Find(&tracks)
-	for _, t := range tracks {
-		results.Tracks = append(results.Tracks,
-			spec.NewTCTrackByFolder(t, t.Album))
+		Limit(params.GetOrInt("songCount", 20))
+	if m, _ := params.Get("musicFolderId"); 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.NewTCTrackByFolder(t, t.Album))
+	}
+
 	sub := spec.NewResponse()
 	sub.SearchResultTwo = results
 	return sub
--- a/server/ctrlsubsonic/handlers_by_folder_test.go
+++ b/server/ctrlsubsonic/handlers_by_folder_test.go
@@ -2,6 +2,7 @@ package ctrlsubsonic

 import (
 	"net/url"
+	"path/filepath"
 	"testing"

 	_ "github.com/jinzhu/gorm/dialects/sqlite"
@@ -13,6 +14,8 @@ func TestGetIndexes(t *testing.T) {

 	runQueryCases(t, contr, contr.ServeGetIndexes, []*queryCase{
 		{url.Values{}, "no_args", false},
+		{url.Values{"musicFolderId": {filepath.Join(m.TmpDir(), "m-0")}}, "with_music_folder_1", false},
+		{url.Values{"musicFolderId": {filepath.Join(m.TmpDir(), "m-1")}}, "with_music_folder_2", false},
 	})
 }

--- a/server/ctrlsubsonic/handlers_by_tags.go
+++ b/server/ctrlsubsonic/handlers_by_tags.go
@@ -16,28 +16,32 @@ import (
 )

 func (c *Controller) ServeGetArtists(r *http.Request) *spec.Response {
+	params := r.Context().Value(CtxParams).(params.Params)
 	var artists []*db.Artist
-	c.DB.
+	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").
-		Find(&artists)
+		Order("artists.name COLLATE NOCASE")
+	if m, _ := params.Get("musicFolderId"); 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 {
-		i := lowerUDecOrHash(artist.IndexName())
-		index, ok := indexMap[i]
-		if !ok {
-			index = &spec.Index{
-				Name:    i,
+		key := lowerUDecOrHash(artist.IndexName())
+		if _, ok := indexMap[key]; !ok {
+			indexMap[key] = &spec.Index{
+				Name:    key,
 				Artists: []*spec.Artist{},
 			}
-			indexMap[i] = index
-			resp = append(resp, index)
+			resp = append(resp, indexMap[key])
 		}
-		index.Artists = append(index.Artists,
+		indexMap[key].Artists = append(indexMap[key].Artists,
 			spec.NewArtistByTags(artist))
 	}
 	sub := spec.NewResponse()
@@ -144,6 +148,9 @@ func (c *Controller) ServeGetAlbumListTwo(r *http.Request) *spec.Response {
 	default:
 		return spec.NewError(10, "unknown value `%s` for parameter 'type'", listType)
 	}
+	if m, _ := params.Get("musicFolderId"); 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
@@ -172,47 +179,63 @@ func (c *Controller) ServeSearchThree(r *http.Request) *spec.Response {
 	if err != nil {
 		return spec.NewError(10, "please provide a `query` parameter")
 	}
-	query = fmt.Sprintf("%%%s%%",
-		strings.TrimSuffix(query, "*"))
+	query = fmt.Sprintf("%%%s%%", strings.TrimSuffix(query, "*"))
 	results := &spec.SearchResultThree{}
+
 	// search "artists"
 	var artists []*db.Artist
-	c.DB.
-		Where("name LIKE ? OR name_u_dec LIKE ?",
-			query, query).
+	q := c.DB.
+		Where("name LIKE ? OR name_u_dec LIKE ?", query, query).
 		Offset(params.GetOrInt("artistOffset", 0)).
-		Limit(params.GetOrInt("artistCount", 20)).
-		Find(&artists)
-	for _, a := range artists {
-		results.Artists = append(results.Artists,
-			spec.NewArtistByTags(a))
+		Limit(params.GetOrInt("artistCount", 20))
+	if m, _ := params.Get("musicFolderId"); m != "" {
+		q = q.
+			Joins("JOIN albums ON albums.tag_artist_id=artists.id").
+			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
-	c.DB.
+	q = c.DB.
 		Preload("TagArtist").
-		Where("tag_title LIKE ? OR tag_title_u_dec LIKE ?",
-			query, query).
+		Where("tag_title LIKE ? OR tag_title_u_dec LIKE ?", query, query).
 		Offset(params.GetOrInt("albumOffset", 0)).
-		Limit(params.GetOrInt("albumCount", 20)).
-		Find(&albums)
-	for _, a := range albums {
-		results.Albums = append(results.Albums,
-			spec.NewAlbumByTags(a, a.TagArtist))
+		Limit(params.GetOrInt("albumCount", 20))
+	if m, _ := params.Get("musicFolderId"); 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
-	c.DB.
+	q = c.DB.
 		Preload("Album").
-		Where("tag_title LIKE ? OR tag_title_u_dec LIKE ?",
-			query, query).
+		Where("tag_title LIKE ? OR tag_title_u_dec LIKE ?", query, query).
 		Offset(params.GetOrInt("songOffset", 0)).
-		Limit(params.GetOrInt("songCount", 20)).
-		Find(&tracks)
-	for _, t := range tracks {
-		results.Tracks = append(results.Tracks,
-			spec.NewTrackByTags(t, t.Album))
+		Limit(params.GetOrInt("songCount", 20))
+	if m, _ := params.Get("musicFolderId"); 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
@@ -313,17 +336,20 @@ func (c *Controller) ServeGetSongsByGenre(r *http.Request) *spec.Response {
 	if err != nil {
 		return spec.NewError(10, "please provide an `genre` parameter")
 	}
-	// TODO: add musicFolderId parameter
-	// (since 1.12.0) only return albums in the music folder with the given id
 	var tracks []*db.Track
-	c.DB.
+	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").
 		Offset(params.GetOrInt("offset", 0)).
-		Limit(params.GetOrInt("count", 10)).
-		Find(&tracks)
+		Limit(params.GetOrInt("count", 10))
+	if m, _ := params.Get("musicFolderId"); 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)),
--- a/server/ctrlsubsonic/handlers_by_tags_test.go
+++ b/server/ctrlsubsonic/handlers_by_tags_test.go
@@ -2,16 +2,19 @@ package ctrlsubsonic

 import (
 	"net/url"
+	"path/filepath"
 	"testing"
 )

 func TestGetArtists(t *testing.T) {
 	t.Parallel()
-	contr, m := makeController(t)
+	contr, m := makeControllerRoots(t, []string{"m-0", "m-1"})
 	defer m.CleanUp()

 	runQueryCases(t, contr, contr.ServeGetArtists, []*queryCase{
 		{url.Values{}, "no_args", false},
+		{url.Values{"musicFolderId": {filepath.Join(m.TmpDir(), "m-0")}}, "with_music_folder_1", false},
+		{url.Values{"musicFolderId": {filepath.Join(m.TmpDir(), "m-1")}}, "with_music_folder_2", false},
 	})
 }

--- a/server/ctrlsubsonic/handlers_common.go
+++ b/server/ctrlsubsonic/handlers_common.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"log"
 	"net/http"
+	"path/filepath"
 	"time"
 	"unicode"

@@ -70,12 +71,22 @@ func (c *Controller) ServeScrobble(r *http.Request) *spec.Response {
 }

 func (c *Controller) ServeGetMusicFolders(r *http.Request) *spec.Response {
-	folders := &spec.MusicFolders{}
-	folders.List = []*spec.MusicFolder{
-		{ID: 1, Name: "music"},
+	var roots []string
+	err := c.DB.
+		Model(&db.Album{}).
+		Pluck("DISTINCT(root_dir)", &roots).
+		Where("parent_id IS NULL").
+		Error
+	if err != nil {
+		return spec.NewError(0, "error getting roots: %v", err)
 	}
+
 	sub := spec.NewResponse()
-	sub.MusicFolders = folders
+	sub.MusicFolders = &spec.MusicFolders{}
+	sub.MusicFolders.List = make([]*spec.MusicFolder, len(roots))
+	for i, root := range roots {
+		sub.MusicFolders.List[i] = &spec.MusicFolder{ID: root, Name: filepath.Base(root)}
+	}
 	return sub
 }

@@ -215,6 +226,9 @@ func (c *Controller) ServeGetRandomSongs(r *http.Request) *spec.Response {
 		q = q.Joins("JOIN track_genres ON track_genres.track_id=tracks.id")
 		q = q.Joins("JOIN genres ON genres.id=track_genres.genre_id AND genres.name=?", genre)
 	}
+	if m, _ := params.Get("musicFolderId"); m != "" {
+		q = q.Where("albums.root_dir=?", m)
+	}
 	q.Find(&tracks)
 	sub := spec.NewResponse()
 	sub.RandomTracks = &spec.RandomTracks{}
--- a/server/ctrlsubsonic/handlers_raw.go
+++ b/server/ctrlsubsonic/handlers_raw.go
@@ -74,10 +74,10 @@ var (
 	errCoverEmpty    = errors.New("no cover found for that folder")
 )

-func coverGetPath(dbc *db.DB, musicPath, podcastPath string, id specid.ID) (string, error) {
+func coverGetPath(dbc *db.DB, podcastPath string, id specid.ID) (string, error) {
 	switch id.Type {
 	case specid.Album:
-		return coverGetPathAlbum(dbc, musicPath, id.Value)
+		return coverGetPathAlbum(dbc, id.Value)
 	case specid.Podcast:
 		return coverGetPathPodcast(dbc, podcastPath, id.Value)
 	case specid.PodcastEpisode:
@@ -87,10 +87,11 @@ func coverGetPath(dbc *db.DB, musicPath, podcastPath string, id specid.ID) (stri
 	}
 }

-func coverGetPathAlbum(dbc *db.DB, musicPath string, id int) (string, error) {
+func coverGetPathAlbum(dbc *db.DB, id int) (string, error) {
 	folder := &db.Album{}
 	err := dbc.DB.
-		Select("id, left_path, right_path, cover").
+		Preload("Parent").
+		Select("id, root_dir, left_path, right_path, cover").
 		First(folder, id).
 		Error
 	if err != nil {
@@ -100,7 +101,7 @@ func coverGetPathAlbum(dbc *db.DB, musicPath string, id int) (string, error) {
 		return "", errCoverEmpty
 	}
 	return path.Join(
-		musicPath,
+		folder.RootDir,
 		folder.LeftPath,
 		folder.RightPath,
 		folder.Cover,
@@ -201,7 +202,7 @@ func (c *Controller) ServeStream(w http.ResponseWriter, r *http.Request) *spec.R
 	case specid.Track:
 		track, _ := streamGetTrack(c.DB, id.Value)
 		audioFile = track
-		audioPath = path.Join(c.MusicPath, track.RelPath())
+		audioPath = path.Join(track.AbsPath())
 		if err != nil {
 			return spec.NewError(70, "track with id `%s` was not found", id)
 		}
@@ -278,7 +279,7 @@ func (c *Controller) ServeDownload(w http.ResponseWriter, r *http.Request) *spec
 	case specid.Track:
 		track, _ := streamGetTrack(c.DB, id.Value)
 		audioFile = track
-		filePath = path.Join(c.MusicPath, track.RelPath())
+		filePath = track.AbsPath()
 		if err != nil {
 			return spec.NewError(70, "track with id `%s` was not found", id)
 		}
--- a/server/ctrlsubsonic/spec/construct_by_folder.go
+++ b/server/ctrlsubsonic/spec/construct_by_folder.go
@@ -84,14 +84,10 @@ func NewArtistByFolder(f *db.Album) *Artist {
 }

 func NewDirectoryByFolder(f *db.Album, children []*TrackChild) *Directory {
-	dir := &Directory{
+	return &Directory{
 		ID:       f.SID(),
 		Name:     f.RightPath,
 		Children: children,
+		ParentID: f.ParentSID(),
 	}
-	// don't show the root dir as a parent
-	if f.ParentID != 1 {
-		dir.ParentID = f.ParentSID()
-	}
-	return dir
 }
--- a/server/ctrlsubsonic/spec/spec.go
+++ b/server/ctrlsubsonic/spec/spec.go
@@ -179,7 +179,7 @@ type MusicFolders struct {
 }

 type MusicFolder struct {
-	ID   int    `xml:"id,attr,omitempty"   json:"id,omitempty"`
+	ID   string `xml:"id,attr,omitempty"   json:"id,omitempty"`
 	Name string `xml:"name,attr,omitempty" json:"name,omitempty"`
 }

--- a/server/ctrlsubsonic/testdata/test_get_album_list_random
+++ b/server/ctrlsubsonic/testdata/test_get_album_list_random
@@ -5,32 +5,6 @@
    "type": "gonic",
    "albumList": {
      "album": [
-        {
-          "id": "al-2",
-          "coverArt": "al-2",
-          "artist": "artist-0",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "album-0",
-          "album": "",
-          "parent": "al-1",
-          "isDir": true,
-          "name": "",
-          "songCount": 3,
-          "duration": 300
-        },
-        {
-          "id": "al-7",
-          "coverArt": "al-7",
-          "artist": "artist-1",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "album-0",
-          "album": "",
-          "parent": "al-6",
-          "isDir": true,
-          "name": "",
-          "songCount": 3,
-          "duration": 300
-        },
        {
          "id": "al-13",
          "coverArt": "al-13",
@@ -44,45 +18,6 @@
          "songCount": 3,
          "duration": 300
        },
-        {
-          "id": "al-11",
-          "coverArt": "al-11",
-          "artist": "artist-2",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "album-0",
-          "album": "",
-          "parent": "al-10",
-          "isDir": true,
-          "name": "",
-          "songCount": 3,
-          "duration": 300
-        },
-        {
-          "id": "al-3",
-          "coverArt": "al-3",
-          "artist": "artist-0",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "album-1",
-          "album": "",
-          "parent": "al-1",
-          "isDir": true,
-          "name": "",
-          "songCount": 3,
-          "duration": 300
-        },
-        {
-          "id": "al-12",
-          "coverArt": "al-12",
-          "artist": "artist-2",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "album-1",
-          "album": "",
-          "parent": "al-10",
-          "isDir": true,
-          "name": "",
-          "songCount": 3,
-          "duration": 300
-        },
        {
          "id": "al-8",
          "coverArt": "al-8",
@@ -97,11 +32,11 @@
          "duration": 300
        },
        {
-          "id": "al-4",
-          "coverArt": "al-4",
+          "id": "al-2",
+          "coverArt": "al-2",
          "artist": "artist-0",
          "created": "2019-11-30T00:00:00Z",
-          "title": "album-2",
+          "title": "album-0",
          "album": "",
          "parent": "al-1",
          "isDir": true,
@@ -109,6 +44,32 @@
          "songCount": 3,
          "duration": 300
        },
+        {
+          "id": "al-3",
+          "coverArt": "al-3",
+          "artist": "artist-0",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "album-1",
+          "album": "",
+          "parent": "al-1",
+          "isDir": true,
+          "name": "",
+          "songCount": 3,
+          "duration": 300
+        },
+        {
+          "id": "al-11",
+          "coverArt": "al-11",
+          "artist": "artist-2",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "album-0",
+          "album": "",
+          "parent": "al-10",
+          "isDir": true,
+          "name": "",
+          "songCount": 3,
+          "duration": 300
+        },
        {
          "id": "al-9",
          "coverArt": "al-9",
@@ -121,6 +82,45 @@
          "name": "",
          "songCount": 3,
          "duration": 300
+        },
+        {
+          "id": "al-7",
+          "coverArt": "al-7",
+          "artist": "artist-1",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "album-0",
+          "album": "",
+          "parent": "al-6",
+          "isDir": true,
+          "name": "",
+          "songCount": 3,
+          "duration": 300
+        },
+        {
+          "id": "al-12",
+          "coverArt": "al-12",
+          "artist": "artist-2",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "album-1",
+          "album": "",
+          "parent": "al-10",
+          "isDir": true,
+          "name": "",
+          "songCount": 3,
+          "duration": 300
+        },
+        {
+          "id": "al-4",
+          "coverArt": "al-4",
+          "artist": "artist-0",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "album-2",
+          "album": "",
+          "parent": "al-1",
+          "isDir": true,
+          "name": "",
+          "songCount": 3,
+          "duration": 300
        }
      ]
    }
--- a/server/ctrlsubsonic/testdata/test_get_album_list_two_random
+++ b/server/ctrlsubsonic/testdata/test_get_album_list_two_random
@@ -5,32 +5,6 @@
    "type": "gonic",
    "albumList2": {
      "album": [
-        {
-          "id": "al-3",
-          "coverArt": "al-3",
-          "artistId": "ar-1",
-          "artist": "artist-0",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "",
-          "album": "",
-          "name": "album-1",
-          "songCount": 3,
-          "duration": 300,
-          "year": 2021
-        },
-        {
-          "id": "al-11",
-          "coverArt": "al-11",
-          "artistId": "ar-3",
-          "artist": "artist-2",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "",
-          "album": "",
-          "name": "album-0",
-          "songCount": 3,
-          "duration": 300,
-          "year": 2021
-        },
        {
          "id": "al-4",
          "coverArt": "al-4",
@@ -44,19 +18,6 @@
          "duration": 300,
          "year": 2021
        },
-        {
-          "id": "al-9",
-          "coverArt": "al-9",
-          "artistId": "ar-2",
-          "artist": "artist-1",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "",
-          "album": "",
-          "name": "album-2",
-          "songCount": 3,
-          "duration": 300,
-          "year": 2021
-        },
        {
          "id": "al-2",
          "coverArt": "al-2",
@@ -70,6 +31,32 @@
          "duration": 300,
          "year": 2021
        },
+        {
+          "id": "al-12",
+          "coverArt": "al-12",
+          "artistId": "ar-3",
+          "artist": "artist-2",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "",
+          "album": "",
+          "name": "album-1",
+          "songCount": 3,
+          "duration": 300,
+          "year": 2021
+        },
+        {
+          "id": "al-3",
+          "coverArt": "al-3",
+          "artistId": "ar-1",
+          "artist": "artist-0",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "",
+          "album": "",
+          "name": "album-1",
+          "songCount": 3,
+          "duration": 300,
+          "year": 2021
+        },
        {
          "id": "al-13",
          "coverArt": "al-13",
@@ -83,19 +70,6 @@
          "duration": 300,
          "year": 2021
        },
-        {
-          "id": "al-8",
-          "coverArt": "al-8",
-          "artistId": "ar-2",
-          "artist": "artist-1",
-          "created": "2019-11-30T00:00:00Z",
-          "title": "",
-          "album": "",
-          "name": "album-1",
-          "songCount": 3,
-          "duration": 300,
-          "year": 2021
-        },
        {
          "id": "al-7",
          "coverArt": "al-7",
@@ -110,14 +84,40 @@
          "year": 2021
        },
        {
-          "id": "al-12",
-          "coverArt": "al-12",
+          "id": "al-8",
+          "coverArt": "al-8",
+          "artistId": "ar-2",
+          "artist": "artist-1",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "",
+          "album": "",
+          "name": "album-1",
+          "songCount": 3,
+          "duration": 300,
+          "year": 2021
+        },
+        {
+          "id": "al-11",
+          "coverArt": "al-11",
          "artistId": "ar-3",
          "artist": "artist-2",
          "created": "2019-11-30T00:00:00Z",
          "title": "",
          "album": "",
-          "name": "album-1",
+          "name": "album-0",
+          "songCount": 3,
+          "duration": 300,
+          "year": 2021
+        },
+        {
+          "id": "al-9",
+          "coverArt": "al-9",
+          "artistId": "ar-2",
+          "artist": "artist-1",
+          "created": "2019-11-30T00:00:00Z",
+          "title": "",
+          "album": "",
+          "name": "album-2",
          "songCount": 3,
          "duration": 300,
          "year": 2021
--- a/server/ctrlsubsonic/testdata/test_get_artists_no_args
+++ b/server/ctrlsubsonic/testdata/test_get_artists_no_args
@@ -9,9 +9,9 @@
        {
          "name": "a",
          "artist": [
-            { "id": "ar-1", "name": "artist-0", "albumCount": 3 },
-            { "id": "ar-2", "name": "artist-1", "albumCount": 3 },
-            { "id": "ar-3", "name": "artist-2", "albumCount": 3 }
+            { "id": "ar-1", "name": "artist-0", "albumCount": 6 },
+            { "id": "ar-2", "name": "artist-1", "albumCount": 6 },
+            { "id": "ar-3", "name": "artist-2", "albumCount": 6 }
          ]
        }
      ]
--- a/server/ctrlsubsonic/testdata/test_get_artists_with_music_folder_1
+++ b/server/ctrlsubsonic/testdata/test_get_artists_with_music_folder_1
@@ -0,0 +1,20 @@
+{
+  "subsonic-response": {
+    "status": "ok",
+    "version": "1.15.0",
+    "type": "gonic",
+    "artists": {
+      "ignoredArticles": "",
+      "index": [
+        {
+          "name": "a",
+          "artist": [
+            { "id": "ar-1", "name": "artist-0", "albumCount": 3 },
+            { "id": "ar-2", "name": "artist-1", "albumCount": 3 },
+            { "id": "ar-3", "name": "artist-2", "albumCount": 3 }
+          ]
+        }
+      ]
+    }
+  }
+}
--- a/server/ctrlsubsonic/testdata/test_get_artists_with_music_folder_2
+++ b/server/ctrlsubsonic/testdata/test_get_artists_with_music_folder_2
@@ -0,0 +1,20 @@
+{
+  "subsonic-response": {
+    "status": "ok",
+    "version": "1.15.0",
+    "type": "gonic",
+    "artists": {
+      "ignoredArticles": "",
+      "index": [
+        {
+          "name": "a",
+          "artist": [
+            { "id": "ar-1", "name": "artist-0", "albumCount": 3 },
+            { "id": "ar-2", "name": "artist-1", "albumCount": 3 },
+            { "id": "ar-3", "name": "artist-2", "albumCount": 3 }
+          ]
+        }
+      ]
+    }
+  }
+}
--- a/server/ctrlsubsonic/testdata/test_get_indexes_no_args
+++ b/server/ctrlsubsonic/testdata/test_get_indexes_no_args
@@ -10,9 +10,12 @@
        {
          "name": "a",
          "artist": [
-            { "id": "al-2", "name": "album-0", "albumCount": 0 },
-            { "id": "al-3", "name": "album-1", "albumCount": 0 },
-            { "id": "al-4", "name": "album-2", "albumCount": 0 }
+            { "id": "al-1", "name": "artist-0", "albumCount": 3 },
+            { "id": "al-14", "name": "artist-0", "albumCount": 3 },
+            { "id": "al-6", "name": "artist-1", "albumCount": 3 },
+            { "id": "al-19", "name": "artist-1", "albumCount": 3 },
+            { "id": "al-10", "name": "artist-2", "albumCount": 3 },
+            { "id": "al-23", "name": "artist-2", "albumCount": 3 }
          ]
        }
      ]
--- a/server/ctrlsubsonic/testdata/test_get_indexes_with_music_folder_1
+++ b/server/ctrlsubsonic/testdata/test_get_indexes_with_music_folder_1
@@ -0,0 +1,21 @@
+{
+  "subsonic-response": {
+    "status": "ok",
+    "version": "1.15.0",
+    "type": "gonic",
+    "indexes": {
+      "lastModified": 0,
+      "ignoredArticles": "",
+      "index": [
+        {
+          "name": "a",
+          "artist": [
+            { "id": "al-1", "name": "artist-0", "albumCount": 3 },
+            { "id": "al-6", "name": "artist-1", "albumCount": 3 },
+            { "id": "al-10", "name": "artist-2", "albumCount": 3 }
+          ]
+        }
+      ]
+    }
+  }
+}
--- a/server/ctrlsubsonic/testdata/test_get_indexes_with_music_folder_2
+++ b/server/ctrlsubsonic/testdata/test_get_indexes_with_music_folder_2
@@ -0,0 +1,21 @@
+{
+  "subsonic-response": {
+    "status": "ok",
+    "version": "1.15.0",
+    "type": "gonic",
+    "indexes": {
+      "lastModified": 0,
+      "ignoredArticles": "",
+      "index": [
+        {
+          "name": "a",
+          "artist": [
+            { "id": "al-14", "name": "artist-0", "albumCount": 3 },
+            { "id": "al-19", "name": "artist-1", "albumCount": 3 },
+            { "id": "al-23", "name": "artist-2", "albumCount": 3 }
+          ]
+        }
+      ]
+    }
+  }
+}
--- a/server/ctrlsubsonic/testdata/test_get_music_directory_with_tracks
+++ b/server/ctrlsubsonic/testdata/test_get_music_directory_with_tracks
@@ -5,6 +5,7 @@
    "type": "gonic",
    "directory": {
      "id": "al-3",
+      "parent": "al-1",
      "name": "album-1",
      "child": [
        {
--- a/server/ctrlsubsonic/testdata/test_get_music_directory_without_tracks
+++ b/server/ctrlsubsonic/testdata/test_get_music_directory_without_tracks
@@ -5,6 +5,7 @@
    "type": "gonic",
    "directory": {
      "id": "al-2",
+      "parent": "al-1",
      "name": "album-0",
      "child": [
        {
--- a/server/ctrlsubsonic/testdata/test_search_two_q_alb
+++ b/server/ctrlsubsonic/testdata/test_search_two_q_alb
@@ -4,11 +4,6 @@
    "version": "1.15.0",
    "type": "gonic",
    "searchResult2": {
-      "artist": [
-        { "id": "al-2", "name": "album-0" },
-        { "id": "al-3", "name": "album-1" },
-        { "id": "al-4", "name": "album-2" }
-      ],
      "album": [
        {
          "id": "al-2",
--- a/server/ctrlsubsonic/testdata/test_search_two_q_art
+++ b/server/ctrlsubsonic/testdata/test_search_two_q_art
@@ -3,6 +3,12 @@
    "status": "ok",
    "version": "1.15.0",
    "type": "gonic",
-    "searchResult2": {}
+    "searchResult2": {
+      "artist": [
+        { "id": "al-1", "parent": "al-5", "name": "artist-0" },
+        { "id": "al-6", "parent": "al-5", "name": "artist-1" },
+        { "id": "al-10", "parent": "al-5", "name": "artist-2" }
+      ]
+    }
  }
 }
--- a/server/db/db.go
+++ b/server/db/db.go
@@ -9,8 +9,6 @@ import (
 	"strings"

 	"github.com/jinzhu/gorm"
-
-	"gopkg.in/gormigrate.v1"
 )

 func DefaultOptions() url.Values {
@@ -49,30 +47,6 @@ func New(path string, options url.Values) (*DB, error) {
 	}
 	db.SetLogger(log.New(os.Stdout, "gorm ", 0))
 	db.DB().SetMaxOpenConns(1)
-	migrOptions := &gormigrate.Options{
-		TableName:      "migrations",
-		IDColumnName:   "id",
-		IDColumnSize:   255,
-		UseTransaction: false,
-	}
-	migr := gormigrate.New(db, migrOptions, wrapMigrations(
-		migrateInitSchema(),
-		migrateCreateInitUser(),
-		migrateMergePlaylist(),
-		migrateCreateTranscode(),
-		migrateAddGenre(),
-		migrateUpdateTranscodePrefIDX(),
-		migrateAddAlbumIDX(),
-		migrateMultiGenre(),
-		migrateListenBrainz(),
-		migratePodcast(),
-		migrateBookmarks(),
-		migratePodcastAutoDownload(),
-		migrateAlbumCreatedAt(),
-	))
-	if err = migr.Migrate(); err != nil {
-		return nil, fmt.Errorf("migrating to latest version: %w", err)
-	}
 	return &DB{DB: db}, nil
 }

--- a/server/db/migrations.go
+++ b/server/db/migrations.go
@@ -3,17 +3,66 @@ package db
 import (
 	"errors"
 	"fmt"
+	"log"

 	"github.com/jinzhu/gorm"
 	"gopkg.in/gormigrate.v1"
 )

-// $ date '+%Y%m%d%H%M'
+type MigrationContext struct {
+	OriginalMusicPath string
+}

-func migrateInitSchema() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202002192100",
-		Migrate: func(tx *gorm.DB) error {
+func (db *DB) Migrate(ctx MigrationContext) error {
+	options := &gormigrate.Options{
+		TableName:      "migrations",
+		IDColumnName:   "id",
+		IDColumnSize:   255,
+		UseTransaction: false,
+	}
+
+	// $ date '+%Y%m%d%H%M'
+	migrations := []*gormigrate.Migration{
+		construct(ctx, "202002192100", migrateInitSchema),
+		construct(ctx, "202002192019", migrateCreateInitUser),
+		construct(ctx, "202002192222", migrateMergePlaylist),
+		construct(ctx, "202003111222", migrateCreateTranscode),
+		construct(ctx, "202003121330", migrateAddGenre),
+		construct(ctx, "202003241509", migrateUpdateTranscodePrefIDX),
+		construct(ctx, "202004302006", migrateAddAlbumIDX),
+		construct(ctx, "202012151806", migrateMultiGenre),
+		construct(ctx, "202101081149", migrateListenBrainz),
+		construct(ctx, "202101111537", migratePodcast),
+		construct(ctx, "202102032210", migrateBookmarks),
+		construct(ctx, "202102191448", migratePodcastAutoDownload),
+		construct(ctx, "202110041330", migrateAlbumCreatedAt),
+		construct(ctx, "202111021951", migrateAlbumRootDir),
+	}
+
+	return gormigrate.
+		New(db.DB, options, migrations).
+		Migrate()
+}
+
+func construct(ctx MigrationContext, id string, f func(*gorm.DB, MigrationContext) error) *gormigrate.Migration {
+	return &gormigrate.Migration{
+		ID: id,
+		Migrate: func(db *gorm.DB) error {
+			tx := db.Begin()
+			defer tx.Commit()
+			if err := f(tx, ctx); err != nil {
+				return fmt.Errorf("%q: %w", id, err)
+			}
+			log.Printf("migration '%s' finished", id)
+			return nil
+		},
+		Rollback: func(*gorm.DB) error {
+			return nil
+		},
+	}
+}
+
+func migrateInitSchema(tx *gorm.DB, _ MigrationContext) error {
 	return tx.AutoMigrate(
 		Genre{},
 		TrackGenre{},
@@ -28,18 +77,19 @@ func migrateInitSchema() gormigrate.Migration {
 		PlayQueue{},
 	).
 		Error
-		},
-	}
 }

-func construct(ctx MigrationContext, id string, f func(*gorm.DB, MigrationContext) error) *gormigrate.Migration {
-	return &gormigrate.Migration{
-		ID: id,
-		Migrate: func(db *gorm.DB) error {
-			tx := db.Begin()
-			defer tx.Commit()
-			if err := f(tx, ctx); err != nil {
-				return fmt.Errorf("%q: %w", id, err)
+func migrateCreateInitUser(tx *gorm.DB, _ MigrationContext) error {
+	const (
+		initUsername = "admin"
+		initPassword = "admin"
+	)
+	err := tx.
+		Where("name=?", initUsername).
+		First(&User{}).
+		Error
+	if !errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil
 	}

 	return tx.Create(&User{
@@ -48,14 +98,9 @@ func construct(ctx MigrationContext, id string, f func(*gorm.DB, MigrationContex
 		IsAdmin:  true,
 	}).
 		Error
-		},
-	}
 }

-func migrateMergePlaylist() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202002192222",
-		Migrate: func(tx *gorm.DB) error {
+func migrateMergePlaylist(tx *gorm.DB, _ MigrationContext) error {
 	if !tx.HasTable("playlist_items") {
 		return nil
 	}
@@ -71,40 +116,25 @@ func migrateMergePlaylist() gormigrate.Migration {
 		DROP TABLE playlist_items;`,
 	).
 		Error
-		},
-	}
 }

-func migrateCreateTranscode() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202003111222",
-		Migrate: func(tx *gorm.DB) error {
+func migrateCreateTranscode(tx *gorm.DB, _ MigrationContext) error {
 	return tx.AutoMigrate(
 		TranscodePreference{},
 	).
 		Error
-		},
-	}
 }

-func migrateAddGenre() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202003121330",
-		Migrate: func(tx *gorm.DB) error {
+func migrateAddGenre(tx *gorm.DB, _ MigrationContext) error {
 	return tx.AutoMigrate(
 		Genre{},
 		Album{},
 		Track{},
 	).
 		Error
-		},
-	}
 }

-func migrateUpdateTranscodePrefIDX() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202003241509",
-		Migrate: func(tx *gorm.DB) error {
+func migrateUpdateTranscodePrefIDX(tx *gorm.DB, _ MigrationContext) error {
 	var hasIDX int
 	tx.
 		Select("1").
@@ -141,26 +171,16 @@ func migrateUpdateTranscodePrefIDX() gormigrate.Migration {
 		return fmt.Errorf("step copy: %w", err)
 	}
 	return nil
-		},
-	}
 }

-func migrateAddAlbumIDX() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202004302006",
-		Migrate: func(tx *gorm.DB) error {
+func migrateAddAlbumIDX(tx *gorm.DB, _ MigrationContext) error {
 	return tx.AutoMigrate(
 		Album{},
 	).
 		Error
-		},
-	}
 }

-func migrateMultiGenre() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202012151806",
-		Migrate: func(tx *gorm.DB) error {
+func migrateMultiGenre(tx *gorm.DB, _ MigrationContext) error {
 	step := tx.AutoMigrate(
 		Genre{},
 		TrackGenre{},
@@ -202,14 +222,9 @@ func migrateMultiGenre() gormigrate.Migration {
 		return fmt.Errorf("step migrate album genres: %w", err)
 	}
 	return nil
-		},
-	}
 }

-func migrateListenBrainz() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202101081149",
-		Migrate: func(tx *gorm.DB) error {
+func migrateListenBrainz(tx *gorm.DB, _ MigrationContext) error {
 	step := tx.AutoMigrate(
 		User{},
 	)
@@ -217,51 +232,31 @@ func migrateListenBrainz() gormigrate.Migration {
 		return fmt.Errorf("step auto migrate: %w", err)
 	}
 	return nil
-		},
-	}
 }

-func migratePodcast() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202101111537",
-		Migrate: func(tx *gorm.DB) error {
+func migratePodcast(tx *gorm.DB, _ MigrationContext) error {
 	return tx.AutoMigrate(
 		Podcast{},
 		PodcastEpisode{},
 	).
 		Error
-		},
-	}
 }

-func migrateBookmarks() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202102032210",
-		Migrate: func(tx *gorm.DB) error {
+func migrateBookmarks(tx *gorm.DB, _ MigrationContext) error {
 	return tx.AutoMigrate(
 		Bookmark{},
 	).
 		Error
-		},
-	}
 }

-func migratePodcastAutoDownload() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202102191448",
-		Migrate: func(tx *gorm.DB) error {
+func migratePodcastAutoDownload(tx *gorm.DB, _ MigrationContext) error {
 	return tx.AutoMigrate(
 		Podcast{},
 	).
 		Error
-		},
-	}
 }

-func migrateAlbumCreatedAt() gormigrate.Migration {
-	return gormigrate.Migration{
-		ID: "202110041330",
-		Migrate: func(tx *gorm.DB) error {
+func migrateAlbumCreatedAt(tx *gorm.DB, _ MigrationContext) error {
 	step := tx.AutoMigrate(
 		Album{},
 	)
@@ -275,6 +270,39 @@ func migrateAlbumCreatedAt() gormigrate.Migration {
 		return fmt.Errorf("step migrate album created_at: %w", err)
 	}
 	return nil
-		},
-	}
+}
+
+func migrateAlbumRootDir(tx *gorm.DB, ctx MigrationContext) error {
+	var hasIDX int
+	tx.
+		Select("1").
+		Table("sqlite_master").
+		Where("type = ?", "index").
+		Where("name = ?", "idx_album_abs_path").
+		Count(&hasIDX)
+	if hasIDX == 1 {
+		// index already exists
+		return nil
+	}
+
+	step := tx.AutoMigrate(
+		Album{},
+	)
+	if err := step.Error; err != nil {
+		return fmt.Errorf("step auto migrate: %w", err)
+	}
+	step = tx.Exec(`
+		DROP INDEX IF EXISTS idx_left_path_right_path;
+	`)
+	if err := step.Error; err != nil {
+		return fmt.Errorf("step drop idx: %w", err)
+	}
+
+	step = tx.Exec(`
+		UPDATE albums SET root_dir=?
+	`, ctx.OriginalMusicPath)
+	if err := step.Error; err != nil {
+		return fmt.Errorf("step drop idx: %w", err)
+	}
+	return nil
 }
--- a/server/db/model.go
+++ b/server/db/model.go
@@ -132,6 +132,18 @@ func (t *Track) MIME() string {
 	return v
 }

+func (t *Track) AbsPath() string {
+	if t.Album == nil {
+		return ""
+	}
+	return path.Join(
+		t.Album.RootDir,
+		t.Album.LeftPath,
+		t.Album.RightPath,
+		t.Filename,
+	)
+}
+
 func (t *Track) RelPath() string {
 	if t.Album == nil {
 		return ""
@@ -182,11 +194,12 @@ type Album struct {
 	CreatedAt     time.Time
 	UpdatedAt     time.Time
 	ModifiedAt    time.Time
-	LeftPath      string `gorm:"unique_index:idx_left_path_right_path"`
-	RightPath     string `gorm:"not null; unique_index:idx_left_path_right_path" sql:"default: null"`
+	LeftPath      string `gorm:"unique_index:idx_album_abs_path"`
+	RightPath     string `gorm:"not null; unique_index:idx_album_abs_path" sql:"default: null"`
 	RightPathUDec string `sql:"default: null"`
 	Parent        *Album
 	ParentID      int      `sql:"default: null; type:int REFERENCES albums(id) ON DELETE CASCADE"`
+	RootDir       string   `gorm:"unique_index:idx_album_abs_path" sql:"default: null"`
 	Genres        []*Genre `gorm:"many2many:album_genres"`
 	Cover         string   `sql:"default: null"`
 	TagArtist     *Artist
--- a/server/jukebox/jukebox.go
+++ b/server/jukebox/jukebox.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"log"
 	"os"
-	"path"
 	"sync"
 	"time"

@@ -27,7 +26,6 @@ type Status struct {

 type Jukebox struct {
 	playlist []*db.Track
-	musicPath string
 	index    int
 	playing  bool
 	sr       beep.SampleRate
@@ -50,9 +48,8 @@ type updateSpeaker struct {
 	offset int
 }

-func New(musicPath string) *Jukebox {
+func New() *Jukebox {
 	return &Jukebox{
-		musicPath: musicPath,
 		sr:      beep.SampleRate(48000),
 		speaker: make(chan updateSpeaker, 1),
 		done:    make(chan bool),
@@ -89,10 +86,7 @@ func (j *Jukebox) doUpdateSpeaker(su updateSpeaker) error {
 		return nil
 	}
 	j.index = su.index
-	f, err := os.Open(path.Join(
-		j.musicPath,
-		j.playlist[su.index].RelPath(),
-	))
+	f, err := os.Open(j.playlist[su.index].AbsPath())
 	if err != nil {
 		return err
 	}
--- a/server/scanner/scanner.go
+++ b/server/scanner/scanner.go
@@ -48,12 +48,6 @@ func New(musicPaths []string, sorted bool, db *db.DB, genreSplit string, tagger
 	}
 }

-type ScanOptions struct {
-	IsFull bool
-	// TODO https://github.com/sentriz/gonic/issues/64
-	Path string
-}
-
 func (s *Scanner) IsScanning() bool {
 	return atomic.LoadInt32(s.scanning) == 1
 }
--- a/server/scanner/scanner_test.go
+++ b/server/scanner/scanner_test.go
@@ -1,9 +1,11 @@
 package scanner_test

 import (
+	"fmt"
 	"io/ioutil"
 	"log"
 	"os"
+	"path/filepath"
 	"testing"

 	"github.com/jinzhu/gorm"
--- a/server/server.go
+++ b/server/server.go
@@ -27,7 +27,7 @@ import (

 type Options struct {
 	DB             *db.DB
-	MusicPath      string
+	MusicPaths     []string
 	PodcastPath    string
 	CachePath      string
 	CoverCachePath string
@@ -46,7 +46,9 @@ type Server struct {
 }

 func New(opts Options) (*Server, error) {
-	opts.MusicPath = filepath.Clean(opts.MusicPath)
+	for i, musicPath := range opts.MusicPaths {
+		opts.MusicPaths[i] = filepath.Clean(musicPath)
+	}
 	opts.CachePath = filepath.Clean(opts.CachePath)
 	opts.PodcastPath = filepath.Clean(opts.PodcastPath)

@@ -55,7 +57,6 @@ func New(opts Options) (*Server, error) {
 	scanner := scanner.New(opts.MusicPaths, false, opts.DB, opts.GenreSplit, tagger)
 	base := &ctrlbase.Controller{
 		DB:          opts.DB,
-		MusicPath:   opts.MusicPath,
 		ProxyPrefix: opts.ProxyPrefix,
 		Scanner:     scanner,
 	}
@@ -109,7 +110,7 @@ func New(opts Options) (*Server, error) {
 	}

 	if opts.JukeboxEnabled {
-		jukebox := jukebox.New(opts.MusicPath)
+		jukebox := jukebox.New()
 		ctrlSubsonic.Jukebox = jukebox
 		server.jukebox = jukebox
 	}