拆分LibraryRepository

internal/repository/artist_repo.go

@@ -0,0 +1,85 @@
+package repository
+
+import (
+	"butterfliu/internal/model"
+	"database/sql"
+)
+
+type ArtistRepository struct {
+	db *sql.DB
+}
+
+func NewArtistRepository(db *sql.DB) *ArtistRepository {
+	return &ArtistRepository{db: db}
+}
+
+func (r *ArtistRepository) Get(id int) (model.Artist, error) {
+	row := r.db.QueryRow("SELECT id, name FROM artists WHERE id = ?", id)
+	var artist model.Artist
+	if err := row.Scan(&artist.ID, &artist.Name); err != nil {
+		return model.Artist{}, err
+	}
+	return artist, nil
+}
+
+func (r *ArtistRepository) GetByName(name string) (model.Artist, error) {
+	row := r.db.QueryRow("SELECT id, name FROM artists WHERE name = ?", name)
+	var artist model.Artist
+	if err := row.Scan(&artist.ID, &artist.Name); err != nil {
+		return model.Artist{}, err
+	}
+	return artist, nil
+}
+
+func (r *ArtistRepository) Create(name string) (model.Artist, error) {
+	result, err := r.db.Exec("INSERT INTO artists (name) VALUES (?)", name)
+	if err != nil {
+		return model.Artist{}, err
+	}
+
+	id, err := result.LastInsertId()
+	if err != nil {
+		return model.Artist{}, err
+	}
+
+	return model.Artist{
+		ID:   int(id),
+		Name: name,
+	}, nil
+}
+
+func (r *ArtistRepository) GetAll() ([]model.Artist, error) {
+	rows, err := r.db.Query("SELECT id, name FROM artists")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	artists := []model.Artist{}
+	for rows.Next() {
+		var artist model.Artist
+		if err := rows.Scan(&artist.ID, &artist.Name); err != nil {
+			return nil, err
+		}
+		artists = append(artists, artist)
+	}
+	return artists, nil
+}
+
+func (r *ArtistRepository) GetSongIDsByArtist(artistID int) ([]int, error) {
+	rows, err := r.db.Query("SELECT id FROM songs 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
+}