add multi-artist support for comma separated artists

db/db.go

@@ -250,8 +250,10 @@ func AddHistoryEntityColumns() error {
 	_, err := Pool.Exec(context.Background(),
 		`ALTER TABLE history ADD COLUMN IF NOT EXISTS artist_id INTEGER REFERENCES artists(id) ON DELETE SET NULL;
 		ALTER TABLE history ADD COLUMN IF NOT EXISTS song_id INTEGER REFERENCES songs(id) ON DELETE SET NULL;
+		ALTER TABLE history ADD COLUMN IF NOT EXISTS artist_ids INTEGER[] DEFAULT '{}';
 		CREATE INDEX IF NOT EXISTS idx_history_artist_id ON history(artist_id);
-		CREATE INDEX IF NOT EXISTS idx_history_song_id ON history(song_id);`)
+		CREATE INDEX IF NOT EXISTS idx_history_song_id ON history(song_id);
+		CREATE INDEX IF NOT EXISTS idx_history_artist_ids ON history USING gin(artist_ids);`)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error adding history entity columns: %v\n", err)
 		return err

db/entities.go

@@ -499,7 +499,7 @@ func SearchSongs(userId int, query string) ([]Song, float64, error) {
 func GetArtistStats(userId, artistId int) (int, error) {
 	var count int
 	err := Pool.QueryRow(context.Background(),
-		"SELECT COUNT(*) FROM history WHERE user_id = $1 AND artist_id = $2",
+		"SELECT COUNT(*) FROM history WHERE user_id = $1 AND $2 = ANY(artist_ids)",
 		userId, artistId).Scan(&count)
 	return count, err
 }
@@ -534,8 +534,9 @@ func MergeArtists(userId int, fromArtistId, toArtistId int) error {
 func GetHistoryForArtist(userId, artistId int, limit, offset int) ([]ScrobbleEntry, error) {
 	rows, err := Pool.Query(context.Background(),
 		`SELECT h.timestamp, h.song_name, h.album_name, h.ms_played, h.platform,
-			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name
+			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name,
-		FROM history h WHERE h.user_id = $1 AND h.artist_id = $2 
+			h.artist_ids
+		FROM history h WHERE h.user_id = $1 AND $2 = ANY(h.artist_ids) 
 		ORDER BY h.timestamp DESC LIMIT $3 OFFSET $4`,
 		userId, artistId, limit, offset)
 	if err != nil {
@@ -546,7 +547,7 @@ func GetHistoryForArtist(userId, artistId int, limit, offset int) ([]ScrobbleEnt
 	var entries []ScrobbleEntry
 	for rows.Next() {
 		var e ScrobbleEntry
-		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName)
+		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName, &e.ArtistIds)
 		if err != nil {
 			return nil, err
 		}
@@ -558,7 +559,8 @@ func GetHistoryForArtist(userId, artistId int, limit, offset int) ([]ScrobbleEnt
 func GetHistoryForSong(userId, songId int, limit, offset int) ([]ScrobbleEntry, error) {
 	rows, err := Pool.Query(context.Background(),
 		`SELECT h.timestamp, h.song_name, h.album_name, h.ms_played, h.platform,
-			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name
+			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name,
+			h.artist_ids
 		FROM history h WHERE h.user_id = $1 AND h.song_id = $2 
 		ORDER BY h.timestamp DESC LIMIT $3 OFFSET $4`,
 		userId, songId, limit, offset)
@@ -570,7 +572,7 @@ func GetHistoryForSong(userId, songId int, limit, offset int) ([]ScrobbleEntry,
 	var entries []ScrobbleEntry
 	for rows.Next() {
 		var e ScrobbleEntry
-		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName)
+		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName, &e.ArtistIds)
 		if err != nil {
 			return nil, err
 		}
@@ -586,6 +588,7 @@ type ScrobbleEntry struct {
 	AlbumName  string
 	MsPlayed   int
 	Platform   string
+	ArtistIds  []int
 }
 
 func MigrateHistoryEntities() error {
@@ -703,7 +706,8 @@ func GetAlbumStats(userId, albumId int) (int, error) {
 func GetHistoryForAlbum(userId, albumId int, limit, offset int) ([]ScrobbleEntry, error) {
 	rows, err := Pool.Query(context.Background(),
 		`SELECT h.timestamp, h.song_name, h.album_name, h.ms_played, h.platform,
-			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name
+			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name,
+			h.artist_ids
 		FROM history h
 		JOIN songs s ON h.song_id = s.id
 		WHERE h.user_id = $1 AND s.album_id = $2 
@@ -717,7 +721,7 @@ func GetHistoryForAlbum(userId, albumId int, limit, offset int) ([]ScrobbleEntry
 	var entries []ScrobbleEntry
 	for rows.Next() {
 		var e ScrobbleEntry
-		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName)
+		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName, &e.ArtistIds)
 		if err != nil {
 			return nil, err
 		}
@@ -743,7 +747,8 @@ func GetHistoryForSongs(userId int, songIds []int, limit, offset int) ([]Scrobbl
 	}
 	rows, err := Pool.Query(context.Background(),
 		`SELECT h.timestamp, h.song_name, h.album_name, h.ms_played, h.platform,
-			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name
+			(SELECT name FROM artists WHERE id = h.artist_id) as artist_name,
+			h.artist_ids
 		FROM history h WHERE h.user_id = $1 AND h.song_id = ANY($2) 
 		ORDER BY h.timestamp DESC LIMIT $3 OFFSET $4`,
 		userId, songIds, limit, offset)
@@ -755,7 +760,7 @@ func GetHistoryForSongs(userId int, songIds []int, limit, offset int) ([]Scrobbl
 	var entries []ScrobbleEntry
 	for rows.Next() {
 		var e ScrobbleEntry
-		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName)
+		err := rows.Scan(&e.Timestamp, &e.SongName, &e.AlbumName, &e.MsPlayed, &e.Platform, &e.ArtistName, &e.ArtistIds)
 		if err != nil {
 			return nil, err
 		}

migrate/lastfm.go

@@ -236,20 +236,65 @@ func ImportLastFM(
 }
 
 func insertBatch(tracks []LastFMTrack, totalImported *int) error {
+	if len(tracks) == 0 {
+		return nil
+	}
+
+	artistIdMap, err := resolveLastFMArtistIds(tracks)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error resolving artist IDs: %v\n", err)
+		return err
+	}
+
+	rows := make([][]any, 0, len(tracks))
+	for _, t := range tracks {
+		artistNames := parseArtistString(t.Artist)
+		var artistIds []int
+		for _, name := range artistNames {
+			if ids, ok := artistIdMap[name]; ok {
+				artistIds = append(artistIds, ids...)
+			}
+		}
+
+		primaryArtistId := 0
+		if len(artistIds) > 0 {
+			primaryArtistId = artistIds[0]
+		}
+
+		rows = append(rows, []any{
+			t.UserId, t.Timestamp, t.SongName, t.Artist,
+			t.Album, 0, "lastfm", primaryArtistId, artistIds,
+		})
+	}
+
 	copyCount, err := db.Pool.CopyFrom(context.Background(),
 		pgx.Identifier{"history"},
 		[]string{
 			"user_id", "timestamp", "song_name", "artist", "album_name",
-			"ms_played", "platform",
+			"ms_played", "platform", "artist_id", "artist_ids",
 		},
-		pgx.CopyFromSlice(len(tracks), func(i int) ([]any, error) {
+		pgx.CopyFromRows(rows),
-			t := tracks[i]
-			return []any{
-				t.UserId, t.Timestamp, t.SongName, t.Artist,
-				t.Album, 0, "lastfm",
-			}, nil
-		}),
 	)
 	*totalImported += int(copyCount)
 	return err
 }
+
+func resolveLastFMArtistIds(tracks []LastFMTrack) (map[string][]int, error) {
+	artistIdMap := make(map[string][]int)
+
+	for _, t := range tracks {
+		artistNames := parseArtistString(t.Artist)
+		for _, name := range artistNames {
+			if _, exists := artistIdMap[name]; !exists {
+				artistId, _, err := db.GetOrCreateArtist(t.UserId, name)
+				if err != nil {
+					fmt.Fprintf(os.Stderr, "Error creating artist %s: %v\n", name, err)
+					continue
+				}
+				artistIdMap[name] = []int{artistId}
+			}
+		}
+	}
+
+	return artistIdMap, nil
+}

migrate/spotify.go

@@ -43,6 +43,7 @@ type trackSource struct {
 	tracksToSkip map[string]struct{} // Set of duplicate keys to skip
 	idx          int                 // Current position in tracks slice
 	userId       int                 // User ID to associate with imported tracks
+	artistIdMap  map[string][]int    // Map of track key to artist IDs
 }
 
 // Represents a track already stored in the database, used for duplicate
@@ -107,11 +108,19 @@ func ImportSpotify(tracks []SpotifyTrack,
 			continue
 		}
 
+		artistIdMap, err := resolveArtistIds(userId, validTracks)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Error resolving artist IDs: %v\n", err)
+			batchStart += batchSize
+			continue
+		}
+
 		src := &trackSource{
 			tracks:       validTracks,
 			tracksToSkip: tracksToSkip,
 			idx:          0,
 			userId:       userId,
+			artistIdMap:  artistIdMap,
 		}
 
 		copyCount, err := db.Pool.CopyFrom(
@@ -125,6 +134,8 @@ func ImportSpotify(tracks []SpotifyTrack,
 				"album_name",
 				"ms_played",
 				"platform",
+				"artist_id",
+				"artist_ids",
 			},
 			src,
 		)
@@ -218,6 +229,43 @@ func getDupes(userId int, tracks []SpotifyTrack) (map[string]struct{}, error) {
 	return duplicates, nil
 }
 
+func resolveArtistIds(userId int, tracks []SpotifyTrack) (map[string][]int, error) {
+	artistIdMap := make(map[string][]int)
+
+	for _, track := range tracks {
+		trackKey := createTrackKey(track)
+		artistNames := parseArtistString(track.Artist)
+
+		var artistIds []int
+		for _, name := range artistNames {
+			artistId, _, err := db.GetOrCreateArtist(userId, name)
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "Error creating artist %s: %v\n", name, err)
+				continue
+			}
+			artistIds = append(artistIds, artistId)
+		}
+
+		artistIdMap[trackKey] = artistIds
+	}
+
+	return artistIdMap, nil
+}
+
+func parseArtistString(artist string) []string {
+	if artist == "" {
+		return nil
+	}
+	var artists []string
+	for _, a := range strings.Split(artist, ",") {
+		a = strings.TrimSpace(a)
+		if a != "" {
+			artists = append(artists, a)
+		}
+	}
+	return artists
+}
+
 // Get the min/max timestamp range for a batch of tracks
 func findTimeRange(tracks []SpotifyTrack) (time.Time, time.Time) {
 	var minTs, maxTs time.Time
@@ -319,6 +367,14 @@ func (s *trackSource) Next() bool {
 func (s *trackSource) Values() ([]any, error) {
 	// idx is already incremented in Next(), so use idx-1
 	t := s.tracks[s.idx-1]
+	trackKey := createTrackKey(t)
+	artistIds := s.artistIdMap[trackKey]
+
+	primaryArtistId := 0
+	if len(artistIds) > 0 {
+		primaryArtistId = artistIds[0]
+	}
+
 	return []any{
 		s.userId,
 		t.Timestamp,
@@ -327,6 +383,8 @@ func (s *trackSource) Values() ([]any, error) {
 		t.Album,
 		t.Played,
 		"spotify",
+		primaryArtistId,
+		artistIds,
 	}, nil
 }
 

scrobble/scrobble.go

@@ -6,6 +6,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"os"
+	"strings"
 	"time"
 
 	"muzi/db"
@@ -118,33 +119,38 @@ func SaveScrobble(scrobble Scrobble) error {
 		return fmt.Errorf("duplicate scrobble")
 	}
 
-	artistId, _, err := db.GetOrCreateArtist(scrobble.UserId, scrobble.Artist)
+	artistNames := parseArtistString(scrobble.Artist)
+	artistIds, err := getOrCreateArtists(scrobble.UserId, artistNames)
 	if err != nil {
-		fmt.Fprintf(os.Stderr, "Error getting/creating artist: %v\n", err)
 		return err
 	}
 
+	primaryArtistId := 0
+	if len(artistIds) > 0 {
+		primaryArtistId = artistIds[0]
+	}
+
 	var albumId int
 	if scrobble.Album != "" {
-		albumId, _, err = db.GetOrCreateAlbum(scrobble.UserId, scrobble.Album, artistId)
+		albumId, _, err = db.GetOrCreateAlbum(scrobble.UserId, scrobble.Album, primaryArtistId)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "Error getting/creating album: %v\n", err)
 			return err
 		}
 	}
 
-	songId, _, err := db.GetOrCreateSong(scrobble.UserId, scrobble.SongName, artistId, albumId)
+	songId, _, err := db.GetOrCreateSong(scrobble.UserId, scrobble.SongName, primaryArtistId, albumId)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error getting/creating song: %v\n", err)
 		return err
 	}
 
 	_, err = db.Pool.Exec(context.Background(),
-		`INSERT INTO history (user_id, timestamp, song_name, artist, album_name, ms_played, platform, artist_id, song_id)
+		`INSERT INTO history (user_id, timestamp, song_name, artist, album_name, ms_played, platform, artist_id, song_id, artist_ids)
-		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
 		ON CONFLICT (user_id, song_name, artist, timestamp) DO NOTHING`,
 		scrobble.UserId, scrobble.Timestamp, scrobble.SongName, scrobble.Artist,
-		scrobble.Album, scrobble.MsPlayed, scrobble.Platform, artistId, songId)
+		scrobble.Album, scrobble.MsPlayed, scrobble.Platform, primaryArtistId, songId, artistIds)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error saving scrobble: %v\n", err)
 		return err
@@ -152,6 +158,33 @@ func SaveScrobble(scrobble Scrobble) error {
 	return nil
 }
 
+func parseArtistString(artist string) []string {
+	if artist == "" {
+		return nil
+	}
+	var artists []string
+	for _, a := range strings.Split(artist, ",") {
+		a = strings.TrimSpace(a)
+		if a != "" {
+			artists = append(artists, a)
+		}
+	}
+	return artists
+}
+
+func getOrCreateArtists(userId int, artistNames []string) ([]int, error) {
+	var artistIds []int
+	for _, name := range artistNames {
+		id, _, err := db.GetOrCreateArtist(userId, name)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Error getting/creating artist: %v\n", err)
+			return nil, err
+		}
+		artistIds = append(artistIds, id)
+	}
+	return artistIds, nil
+}
+
 func SaveScrobbles(scrobbles []Scrobble) (int, int, error) {
 	if len(scrobbles) == 0 {
 		return 0, 0, nil

static/style.css

@@ -334,6 +334,7 @@
     justify-content: center;
     margin: 5px;
     width: 30%;
+    white-space: pre-wrap;
   }
   tr:nth-child(even) {
     background-color: #111;
@@ -341,6 +342,7 @@
   a {
     color: #AFA;
     text-decoration: none;
+    white-space: pre-wrap;
   }
   a:hover {
     color: #FFF;

templates/album.gohtml

@@ -12,8 +12,10 @@
         <button class="edit-btn" onclick="openEditModal()">Edit</button>
         {{end}}
       </h1>
-      {{if .Artist.Name}}
+      {{if .ArtistNames}}
-      <h2><a href="/profile/{{.Username}}/artist/{{urlquery .Artist.Name}}">{{.Artist.Name}}</a></h2>
+      <h2>
+        {{- range $i, $name := .ArtistNames}}{{if $i}}, {{end}}<a href="/profile/{{$.Username}}/artist/{{urlquery $name}}">{{$name}}</a>{{end}}
+      </h2>
       {{end}}
     </div>
     <div class="profile-top-blank">
@@ -34,7 +36,10 @@
       {{$username := .Username}}
       {{range .Times}}
       <tr>
-        <td><a href="/profile/{{$username}}/artist/{{urlquery .ArtistName}}">{{.ArtistName}}</a></td>
+        <td>
+          {{- $artistNames := getArtistNames .ArtistIds}}
+          {{- range $i, $name := $artistNames}}{{if $i}}, {{end}}<a href="/profile/{{$username}}/artist/{{urlquery $name}}">{{$name}}</a>{{end}}
+        </td>
         <td><a href="/profile/{{$username}}/song/{{urlquery .ArtistName}}/{{urlquery .SongName}}">{{.SongName}}</a></td>
         <td>{{.AlbumName}}</td>
         <td title="{{formatTimestampFull .Timestamp}}">{{formatTimestamp .Timestamp}}</td>

templates/artist.gohtml

@@ -31,7 +31,10 @@
       {{$username := .Username}}
       {{range .Times}}
       <tr>
-        <td><a href="/profile/{{$username}}/artist/{{urlquery .ArtistName}}">{{.ArtistName}}</a></td>
+        <td>
+          {{- $artistNames := getArtistNames .ArtistIds}}
+          {{- range $i, $name := $artistNames}}{{if $i}}, {{end}}<a href="/profile/{{$username}}/artist/{{urlquery $name}}">{{$name}}</a>{{end}}
+        </td>
         <td><a href="/profile/{{$username}}/song/{{urlquery .ArtistName}}/{{urlquery .SongName}}">{{.SongName}}</a></td>
         <td><a href="/profile/{{$username}}/album/{{urlquery .ArtistName}}/{{urlquery .AlbumName}}">{{.AlbumName}}</a></td>
         <td title="{{formatTimestampFull .Timestamp}}">{{formatTimestamp .Timestamp}}</td>

templates/profile.gohtml

@@ -28,13 +28,17 @@
         <td>Now Playing</td>
       </tr>
       {{end}}
-      {{$artists := .Artists}}
+      {{$artistIdsList := .ArtistIdsList}}
       {{$times := .Times}}
       {{$username := .Username}}
       {{range $index, $title := .Titles}}
       <tr>
-        <td><a href="/profile/{{$username}}/artist/{{urlquery (index $artists $index)}}">{{index $artists $index}}</a></td>
+        <td>
-        <td><a href="/profile/{{$username}}/song/{{urlquery (index $artists $index)}}/{{urlquery $title}}">{{$title}}</a></td>
+          {{- $artistIds := index $artistIdsList $index}}
+          {{- $artistNames := getArtistNames $artistIds}}
+          {{- range $i, $name := $artistNames}}{{if $i}}, {{end}}<a href="/profile/{{$username}}/artist/{{urlquery $name}}">{{$name}}</a>{{end}}
+        </td>
+        <td><a href="/profile/{{$username}}/song/{{urlquery (index $.Artists $index)}}/{{urlquery $title}}">{{$title}}</a></td>
         <td title="{{formatTimestampFull (index $times $index)}}">{{formatTimestamp (index $times $index)}}</td>
       </tr>
       {{end}}

templates/song.gohtml

@@ -7,8 +7,10 @@
         <button class="edit-btn" onclick="openEditModal()">Edit</button>
         {{end}}
       </h1>
-      {{if .Artist.Name}}
+      {{if .ArtistNames}}
-      <h2><a href="/profile/{{.Username}}/artist/{{urlquery .Artist.Name}}">{{.Artist.Name}}</a></h2>
+      <h2>
+        {{- range $i, $name := .ArtistNames}}{{if $i}}, {{end}}<a href="/profile/{{$.Username}}/artist/{{urlquery $name}}">{{$name}}</a>{{end}}
+      </h2>
       {{end}}
       {{range .Albums}}
       <h3><a href="/profile/{{$.Username}}/album/{{urlquery $.Artist.Name}}/{{urlquery .Title}}">{{.Title}}</a></h3>
@@ -32,7 +34,10 @@
       {{$username := .Username}}
       {{range .Times}}
       <tr>
-        <td><a href="/profile/{{$username}}/artist/{{urlquery .ArtistName}}">{{.ArtistName}}</a></td>
+        <td>
+          {{- $artistNames := getArtistNames .ArtistIds}}
+          {{- range $i, $name := $artistNames}}{{if $i}}, {{end}}<a href="/profile/{{$username}}/artist/{{urlquery $name}}">{{$name}}</a>{{end}}
+        </td>
         <td><a href="/profile/{{$username}}/song/{{urlquery .ArtistName}}/{{urlquery .SongName}}">{{.SongName}}</a></td>
         <td><a href="/profile/{{$username}}/album/{{urlquery .ArtistName}}/{{urlquery .AlbumName}}">{{.AlbumName}}</a></td>
         <td title="{{formatTimestampFull .Timestamp}}">{{formatTimestamp .Timestamp}}</td>

web/entity.go

@@ -1,6 +1,7 @@
 package web
 
 import (
+	"context"
 	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
@@ -35,6 +36,7 @@ type SongData struct {
 	Username         string
 	Song             db.Song
 	Artist           db.Artist
+	ArtistNames      []string
 	Albums           []db.Album
 	ListenCount      int
 	Times            []db.ScrobbleEntry
@@ -48,6 +50,7 @@ type AlbumData struct {
 	Username         string
 	Album            db.Album
 	Artist           db.Artist
+	ArtistNames      []string
 	ListenCount      int
 	Times            []db.ScrobbleEntry
 	Page             int
@@ -169,8 +172,14 @@ func songPageHandler() http.HandlerFunc {
 		var songIds []int
 		var albums []db.Album
 		seenAlbums := make(map[int]bool)
+		seenArtistIds := make(map[int]bool)
+		var allArtistIds []int
 		for _, s := range songs {
 			songIds = append(songIds, s.Id)
+			if s.ArtistId > 0 && !seenArtistIds[s.ArtistId] {
+				seenArtistIds[s.ArtistId] = true
+				allArtistIds = append(allArtistIds, s.ArtistId)
+			}
 			if s.AlbumId > 0 && !seenAlbums[s.AlbumId] {
 				seenAlbums[s.AlbumId] = true
 				album, _ := db.GetAlbumById(s.AlbumId)
@@ -178,6 +187,29 @@ func songPageHandler() http.HandlerFunc {
 			}
 		}
 
+		var artistNames []string
+		seenArtistIdsMap := make(map[int]bool)
+		rows, err := db.Pool.Query(context.Background(),
+			`SELECT DISTINCT artist_ids FROM history WHERE song_id = ANY($1)`,
+			songIds)
+		if err == nil {
+			defer rows.Close()
+			for rows.Next() {
+				var artistIds []int
+				if err := rows.Scan(&artistIds); err == nil {
+					for _, id := range artistIds {
+						if !seenArtistIdsMap[id] {
+							seenArtistIdsMap[id] = true
+							a, err := db.GetArtistById(id)
+							if err == nil {
+								artistNames = append(artistNames, a.Name)
+							}
+						}
+					}
+				}
+			}
+		}
+
 		pageStr := r.URL.Query().Get("page")
 		var pageInt int
 		if pageStr == "" {
@@ -208,6 +240,7 @@ func songPageHandler() http.HandlerFunc {
 			Username:         username,
 			Song:             song,
 			Artist:           artist,
+			ArtistNames:      artistNames,
 			Albums:           albums,
 			ListenCount:      listenCount,
 			Times:            entries,
@@ -375,10 +408,25 @@ func albumPageHandler() http.HandlerFunc {
 			return
 		}
 
+		var artistNames []string
+		seenArtistIds := make(map[int]bool)
+		for _, e := range entries {
+			for _, artistId := range e.ArtistIds {
+				if !seenArtistIds[artistId] {
+					seenArtistIds[artistId] = true
+					a, err := db.GetArtistById(artistId)
+					if err == nil {
+						artistNames = append(artistNames, a.Name)
+					}
+				}
+			}
+		}
+
 		albumData := AlbumData{
 			Username:         username,
 			Album:            album,
 			Artist:           artist,
+			ArtistNames:      artistNames,
 			ListenCount:      listenCount,
 			Times:            entries,
 			Page:             pageInt,

web/profile.go

@@ -25,6 +25,7 @@ type ProfileData struct {
 	TrackCount          int
 	ArtistCount         int
 	Artists             []string
+	ArtistIdsList       [][]int
 	Titles              []string
 	Times               []time.Time
 	Page                int
@@ -93,7 +94,7 @@ func profilePageHandler() http.HandlerFunc {
 
 		rows, err := db.Pool.Query(
 			r.Context(),
-			"SELECT artist, song_name, timestamp FROM history WHERE user_id = $1 ORDER BY timestamp DESC LIMIT $2 OFFSET $3;",
+			"SELECT artist_id, song_name, timestamp, artist_ids FROM history WHERE user_id = $1 ORDER BY timestamp DESC LIMIT $2 OFFSET $3;",
 			userId,
 			lim,
 			off,
@@ -106,15 +107,27 @@ func profilePageHandler() http.HandlerFunc {
 		defer rows.Close()
 
 		for rows.Next() {
-			var artist, title string
+			var artistId int
+			var title string
 			var time pgtype.Timestamptz
-			err = rows.Scan(&artist, &title, &time)
+			var artistIds []int
+			err = rows.Scan(&artistId, &title, &time, &artistIds)
 			if err != nil {
 				fmt.Fprintf(os.Stderr, "Scanning history row failed: %v\n", err)
 				http.Error(w, err.Error(), http.StatusInternalServerError)
 				return
 			}
-			profileData.Artists = append(profileData.Artists, artist)
+
+			var artistName string
+			if artistId > 0 {
+				artist, err := db.GetArtistById(artistId)
+				if err == nil {
+					artistName = artist.Name
+				}
+			}
+
+			profileData.Artists = append(profileData.Artists, artistName)
+			profileData.ArtistIdsList = append(profileData.ArtistIdsList, artistIds)
 			profileData.Titles = append(profileData.Titles, title)
 			profileData.Times = append(profileData.Times, time.Time)
 		}

web/utils.go

@@ -5,6 +5,8 @@ package web
 import (
 	"fmt"
 	"time"
+
+	"muzi/db"
 )
 
 // Subtracts two integers
@@ -56,3 +58,18 @@ func formatTimestamp(timestamp time.Time) string {
 func formatTimestampFull(timestamp time.Time) string {
 	return timestamp.Format("Monday 2 Jan 2006, 3:04pm")
 }
+
+// GetArtistNames takes artist IDs and returns a slice of artist names
+func GetArtistNames(artistIds []int) []string {
+	if artistIds == nil {
+		return nil
+	}
+	var names []string
+	for _, id := range artistIds {
+		artist, err := db.GetArtistById(id)
+		if err == nil {
+			names = append(names, artist.Name)
+		}
+	}
+	return names
+}

web/web.go

@@ -37,6 +37,7 @@ func init() {
 		"formatTimestamp":     formatTimestamp,
 		"formatTimestampFull": formatTimestampFull,
 		"urlquery":            url.QueryEscape,
+		"getArtistNames":      GetArtistNames,
 	}
 	templates = template.Must(template.New("").Funcs(funcMap).ParseGlob("./templates/*.gohtml"))
 }