拆分LibraryRepository

internal/repository/album_repo.go

@@ -0,0 +1,125 @@
+package repository
+
+import (
+	"butterfliu/internal/model"
+	"database/sql"
+)
+
+type AlbumRepository struct {
+	db *sql.DB
+}
+
+func NewAlbumRepository(db *sql.DB) *AlbumRepository {
+	return &AlbumRepository{db: db}
+}
+
+func (r *AlbumRepository) Get(id int) (model.Album, error) {
+	row := r.db.QueryRow("SELECT id, title, artist_id FROM albums WHERE id = ?", id)
+	var album model.Album
+	if err := row.Scan(&album.ID, &album.Title, &album.ArtistID); err != nil {
+		return model.Album{}, err
+	}
+	return album, nil
+}
+
+func (r *AlbumRepository) GetByTitleAndArtist(title string, artistID int) (model.Album, error) {
+	row := r.db.QueryRow(`
+		SELECT id, title, artist_id, COALESCE(cover, ''), COALESCE(year, 0)
+		FROM albums WHERE title = ? AND artist_id = ?
+	`)
+	var album model.Album
+	if err := row.Scan(&album.ID, &album.Title, &album.ArtistID, &album.Cover, &album.Year); err != nil {
+		return model.Album{}, err
+	}
+	return album, nil
+}
+
+func (r *AlbumRepository) Create(title string, artistID int) (model.Album, error) {
+	result, err := r.db.Exec("INSERT INTO albums (title, artist_id) VALUES (?, ?)", title, artistID)
+	if err != nil {
+		return model.Album{}, err
+	}
+
+	id, err := result.LastInsertId()
+	if err != nil {
+		return model.Album{}, err
+	}
+
+	return model.Album{
+		ID:       int(id),
+		Title:    title,
+		ArtistID: artistID,
+	}, nil
+}
+
+func (r *AlbumRepository) GetAll() ([]model.Album, error) {
+	rows, err := r.db.Query("SELECT id, title, artist_id FROM albums")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	albums := []model.Album{}
+	for rows.Next() {
+		var album model.Album
+		if err := rows.Scan(&album.ID, &album.Title, &album.ArtistID); err != nil {
+			return nil, err
+		}
+		albums = append(albums, album)
+	}
+	return albums, nil
+}
+
+func (r *AlbumRepository) GetByArtist(artistID int) ([]model.Album, error) {
+	rows, err := r.db.Query("SELECT id, title, artist_id FROM albums WHERE artist_id = ?", artistID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	albums := []model.Album{}
+	for rows.Next() {
+		var album model.Album
+		if err := rows.Scan(&album.ID, &album.Title, &album.ArtistID); err != nil {
+			return nil, err
+		}
+		albums = append(albums, album)
+	}
+	return albums, nil
+}
+
+func (r *AlbumRepository) GetIDsByArtist(artistID int) ([]int, error) {
+	rows, err := r.db.Query("SELECT id FROM albums WHERE artist_id = ?", artistID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	ids := []int{}
+	for rows.Next() {
+		var id int
+		if err := rows.Scan(&id); err != nil {
+			return nil, err
+		}
+		ids = append(ids, id)
+	}
+	return ids, nil
+}
+
+func (r *AlbumRepository) GetSongIDs(albumID int) ([]int, error) {
+	rows, err := r.db.Query("SELECT id FROM songs WHERE album_id = ?", albumID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	ids := []int{}
+	for rows.Next() {
+		var id int
+		if err := rows.Scan(&id); err != nil {
+			return nil, err
+		}
+		ids = append(ids, id)
+	}
+	return ids, nil
+}