package library

import (
	"slices"
	"testing"
)

// Real basenames from the operator's library (2026-10-08), each with the
// labels it should carry. The negatives are the near misses that shaped the
// list: a song called "Chain Reaction", a live album, an ordinary track.
func TestSourceMarkersFor(t *testing.T) {
	cases := []struct {
		base string
		want []string
	}{
		{"Daft Punk - Random Access Memories - 06 - Daft Punk - Doin' It Right (Music Video) ft. Panda Bear.mp3", []string{"music video"}},
		{"Gorillaz - Humanz - 03 - Gorillaz - Saturnz Barz (Official Video).mp3", []string{"music video"}},
		{"Gorillaz - Humanz - 05 - Gorillaz - Andromeda (Official Audio).mp3", []string{"official audio"}},
		{"Gorillaz - Gorillaz - 06 - Gorillaz - P45 (Visualizer).mp3", []string{"visualiser"}},
		{"Gorillaz - Demon Days - 16 - Gorillaz - Don Quixote's Christmas Bonanza (Visualiser).mp3", []string{"visualiser"}},
		{"Artist - Album - 01 - Artist - Song (Lyric Video).mp3", []string{"lyric video"}},
		{"Gorillaz - Humanz - 02 - FIRST TIME HEARING Gorillaz - Ascension REACTION.mp3", []string{"reaction"}},
		{"Watsky - INTENTION - 05 - MANIAC Reacts to Watsky - AWW SHiT.mp3", []string{"reaction"}},
		{"米津玄師 - diorama - 09 - 【MV】米津玄師 - 恋と病熱.mp3", []string{"MV"}},
		{"Andora - Ego - 01 - Andora - Ego (feat. Will Stetson) MV.mp3", []string{"MV"}},
		{"Jimmy Eat World - Something(s) Loud - 05 - Jimmy Eat World - Call to Love (Audio).mp3", []string{"[Audio]"}},
		{"Record Heat - World War IV - 03 - Record Heat - Front Seat Feelin' [Audio].mp3", []string{"[Audio]"}},
		{"Aphex Twin - Come To Daddy - 03 - Aphex Twin - Bucephalus Bouncing Ball (HQ).mp3", []string{"[HD]"}},
		{"Artist - Album - 01 - Artist - Song (Official Lyric Video) [4K].mp3", []string{"lyric video", "[HD]"}},

		{"Beck - Guero - 15 - Beck - Chain Reaction.mp3", nil},
		{"Nirvana - MTV Unplugged in New York - 01 - About a Girl (live in New York).flac", nil},
		{"Boards of Canada - Music Has the Right to Children - 05 - Roygbiv.flac", nil},
		{"Artist - Album - 01 - Mvula.flac", nil},
	}
	for _, c := range cases {
		got := SourceMarkersFor("/music/x/" + c.base)
		if len(got) == 0 && len(c.want) == 0 {
			continue // nil and empty both mean "no markers"
		}
		if !slices.Equal(got, c.want) {
			t.Errorf("%s:\n  got  %v\n  want %v", c.base, got, c.want)
		}
	}
}

// The folder is not evidence: a marker word in a directory name must not
// flag the files inside it.
func TestSourceMarkersFor_ReadsOnlyTheBasename(t *testing.T) {
	if got := SourceMarkersFor("/music/Official Video Collection/01 - Song.flac"); len(got) != 0 {
		t.Errorf("directory name flagged the file: %v", got)
	}
}