diff --git a/internal/recommendation/sessionvector.go b/internal/recommendation/sessionvector.go
index 94cd3154..d244d51e 100644
--- a/internal/recommendation/sessionvector.go
+++ b/internal/recommendation/sessionvector.go
@@ -1,6 +1,8 @@
package recommendation
import (
+ "strings"
+
"github.com/jackc/pgx/v5/pgtype"
"git.fabledsword.com/bvandeusen/minstrel/internal/db/dbq"
@@ -28,7 +30,9 @@ func BuildSessionVector(priorTracks []dbq.Track) SessionVector {
v.Artists = append(v.Artists, artistID)
}
if t.Genre != nil && *t.Genre != "" {
- v.Tags[*t.Genre]++
+ for _, g := range splitGenres(*t.Genre) {
+ v.Tags[g]++
+ }
}
v.RecentTrackIDs = append(v.RecentTrackIDs, uuidString(t.ID))
}
@@ -41,3 +45,22 @@ func uuidString(u pgtype.UUID) string {
}
return u.String()
}
+
+// splitGenres splits a track's denormalized genre string on the common
+// multi-genre delimiters (`;`, `,`) used by various tag editors. Trims
+// whitespace; drops empty fragments. Strings with no delimiter come back
+// as a single-element slice. Concatenated-without-separator inputs (e.g.
+// "ElectronicComplextroGlitch Hop" from broken tag-editor output) cannot
+// be split without a genre dictionary and stay as one opaque tag.
+func splitGenres(s string) []string {
+ parts := strings.FieldsFunc(s, func(r rune) bool {
+ return r == ';' || r == ','
+ })
+ out := make([]string, 0, len(parts))
+ for _, p := range parts {
+ if p = strings.TrimSpace(p); p != "" {
+ out = append(out, p)
+ }
+ }
+ return out
+}
diff --git a/internal/recommendation/sessionvector_test.go b/internal/recommendation/sessionvector_test.go
index 745b3bf9..91ba38f4 100644
--- a/internal/recommendation/sessionvector_test.go
+++ b/internal/recommendation/sessionvector_test.go
@@ -123,6 +123,77 @@ func TestBuildSessionVector_NilGenre_NotIndexed(t *testing.T) {
}
}
+func TestBuildSessionVector_MultiGenreSplitsOnSemicolon(t *testing.T) {
+ a1 := uuid("11111111-1111-1111-1111-111111111111")
+ v := BuildSessionVector([]dbq.Track{
+ track(a1, "Indie Pop; Pop; Alternative Pop"),
+ track(a1, "Pop"),
+ track(a1, "Boom Bap; Hip Hop; Lo-Fi"),
+ })
+ // Pop appears once on track 1 and once on track 2 → count 2.
+ if v.Tags["Pop"] != 2 {
+ t.Errorf("Tags['Pop'] = %d, want 2 (one per matching track)", v.Tags["Pop"])
+ }
+ // Indie Pop, Alternative Pop only on track 1.
+ if v.Tags["Indie Pop"] != 1 || v.Tags["Alternative Pop"] != 1 {
+ t.Errorf("Indie/Alt Pop counts wrong: %+v", v.Tags)
+ }
+ // Track 3's genres.
+ if v.Tags["Boom Bap"] != 1 || v.Tags["Hip Hop"] != 1 || v.Tags["Lo-Fi"] != 1 {
+ t.Errorf("track-3 genre counts wrong: %+v", v.Tags)
+ }
+}
+
+func TestBuildSessionVector_NoSeparatorStaysOpaque(t *testing.T) {
+ // Concatenated strings without separators (broken tag-editor output)
+ // can't be parsed; they stay as one tag and only match identical strings.
+ a1 := uuid("11111111-1111-1111-1111-111111111111")
+ v := BuildSessionVector([]dbq.Track{
+ track(a1, "ElectronicComplextroGlitch Hop"),
+ track(a1, "ElectronicComplextroGlitch Hop"),
+ })
+ if v.Tags["ElectronicComplextroGlitch Hop"] != 2 {
+ t.Errorf("opaque tag count = %d, want 2", v.Tags["ElectronicComplextroGlitch Hop"])
+ }
+ if len(v.Tags) != 1 {
+ t.Errorf("len(Tags) = %d, want 1", len(v.Tags))
+ }
+}
+
+func TestSplitGenres(t *testing.T) {
+ cases := []struct {
+ in string
+ want []string
+ }{
+ {"", nil},
+ {"Pop", []string{"Pop"}},
+ {"Pop; Rock", []string{"Pop", "Rock"}},
+ {"Pop, Rock", []string{"Pop", "Rock"}},
+ {"Pop; Rock, Jazz", []string{"Pop", "Rock", "Jazz"}},
+ {" Pop ; Rock ", []string{"Pop", "Rock"}},
+ {";; Pop ;;", []string{"Pop"}},
+ {"ElectronicComplextroGlitch Hop", []string{"ElectronicComplextroGlitch Hop"}},
+ }
+ for _, c := range cases {
+ got := splitGenres(c.in)
+ if c.want == nil {
+ if len(got) != 0 {
+ t.Errorf("splitGenres(%q) = %v, want empty", c.in, got)
+ }
+ continue
+ }
+ if len(got) != len(c.want) {
+ t.Errorf("splitGenres(%q) = %v, want %v", c.in, got, c.want)
+ continue
+ }
+ for i := range got {
+ if got[i] != c.want[i] {
+ t.Errorf("splitGenres(%q)[%d] = %q, want %q", c.in, i, got[i], c.want[i])
+ }
+ }
+ }
+}
+
func TestBuildSessionVector_JSONRoundTrip(t *testing.T) {
a1 := uuid("11111111-1111-1111-1111-111111111111")
v := BuildSessionVector([]dbq.Track{
diff --git a/web/src/lib/components/TrackRow.svelte b/web/src/lib/components/TrackRow.svelte
index 68a76432..eeafee1e 100644
--- a/web/src/lib/components/TrackRow.svelte
+++ b/web/src/lib/components/TrackRow.svelte
@@ -1,7 +1,7 @@
{track.track_number ?? '—'}
{track.title}
+