package data

import (
	"testing"
)

func TestSongDeduplicate(t *testing.T) {
	song := Song{
		Name: "song_a",
		Album: Album{
			Name: "album_a",
			Artists: []Artist{
				{Name: "artist_a"},
				{Name: "artist_a"},
				{Name: "artist_b"},
			},
		},
		Artists: []Artist{
			{Name: "artist a"},
			{Name: "artist    a"},
			{Name: "artist_b"},
		},
	}

	compiled := song.Compile().(Song)

	if len(compiled.Artists) != 2 {
		t.Errorf(`the two artists with the same name have to be merged, %d`, len(compiled.Artists))
	}

	if len(compiled.Album.Artists) != 2 {
		t.Errorf(`the two artists with the same names in the album have to be merged, %d`, len(compiled.Album.Artists))
	}
}

func TestSongUnify(t *testing.T) {
	song := Song{
		Name: "          foo  Bar  BAZ",
		Album: Album{
			Name: " foo",
		},
	}

	compiled := song.Compile().(Song)

	if compiled.UnifiedName != "foo bar baz" {
		t.Errorf(`the song name doesn't get compiled properly`)
	}

	if compiled.Album.UnifiedName != "foo" {
		t.Errorf(`the album name in the song isn't unified`)
	}
}

func TestAlbumDeduplicate(t *testing.T) {
	album := Album{
		Name: "album_a",
		Songs: []Song{
			{Name: "song a"},
			{Name: "song  a"},
			{Name: "song_b"},
			{Name: "song_c"},
			{Name: "song_d"},
			{Name: "song a"},
		},
		Artists: []Artist{
			{Name: "artist_a"},
			{
				Name: "artist_a",
				Albums: []Album{
					{Name: "album_a"},
					{Name: "album_b"},
					{Name: "album_a"},
				},
			},
		},
	}

	compiled := album.Compile().(Album)

	if len(compiled.Songs) != 4 {
		t.Errorf(`didn't properly merge songs`)
	}

	if len(compiled.Artists) != 1 {
		t.Errorf(`didn't properly merge artists`)
	}

	if len(compiled.Artists[0].Albums) != 2 {
		t.Errorf(`didn't properly merge or deduplicate albums`)
	}
}

func TestAlbumUnify(t *testing.T) {
	album := Album{
		Name: "          foo  Bar  BAZ",
	}

	compiled := album.Compile().(Album)

	if compiled.UnifiedName != "foo bar baz" {
		t.Errorf(`the song name doesn't get compiled properly`)
	}
}

func TestArtistDeduplicate(t *testing.T) {
	artist := Artist{
		Name: "main_artist",
		Albums: []Album{
			{Name: "concept_album"},
			{
				Name: "concept_album",
				Artists: []Artist{
					{
						Name: "main_artist",
						Albums: []Album{
							{Name: "concept_album", Songs: []Song{{Name: "song_x"}, {Name: "song_x"}}},
							{Name: "other_album"},
						},
					},
					{Name: "featured_artist"},
					{Name: "featured_artist"},
				},
				Songs: []Song{
					{
						Name: "complex_song",
						Artists: []Artist{
							{Name: "main_artist"},
							{Name: "featured_artist"},
							{Name: "main_artist"},
						},
					},
				},
			},
		},
	}

	compiled := artist.Compile().(Artist)

	if len(compiled.Albums) != 1 {
		t.Errorf("should deduplicate album artists, got %d", len(compiled.Albums[0].Artists))
	}

	if len(compiled.Albums[0].Artists) != 2 {
		t.Errorf("should deduplicate album artists, got %d", len(compiled.Albums[0].Artists))
	}

	if len(compiled.Albums[0].Artists[0].Albums) != 2 {
		t.Errorf("should deduplicate nested albums, got %d", len(compiled.Albums[0].Artists[0].Albums))
	}

	if len(compiled.Albums[0].Songs[0].Artists) != 2 {
		t.Errorf("should deduplicate song artists, got %d", len(compiled.Albums[0].Songs[0].Artists))
	}
}

func TestArtistUnify(t *testing.T) {
	artist := Artist{
		Name: "          The  BEATLES  ",
		Albums: []Album{
			{
				Name: "  Abbey   Road  ",
				Songs: []Song{
					{Name: "Come   Together  "},
					{Name: "Something"},
				},
			},
		},
	}

	compiled := artist.Compile().(Artist)

	if compiled.UnifiedName != "the beatles" {
		t.Errorf("artist name not unified properly, got: %s", compiled.UnifiedName)
	}

	if compiled.Albums[0].UnifiedName != "abbey road" {
		t.Errorf("album name in artist not unified properly, got: %s", compiled.Albums[0].UnifiedName)
	}

	if compiled.Albums[0].Songs[0].UnifiedName != "come together" {
		t.Errorf("song name in artist album not unified properly, got: %s", compiled.Albums[0].Songs[0].UnifiedName)
	}
}