完善接口

internal/controller/library.go

@@ -249,6 +249,21 @@ func (c *LibraryController) GetAlbums(w http.ResponseWriter, r *http.Request) {
 	jsonResponse(w, albums, http.StatusOK)
 }
 
+func (c *LibraryController) GetAlbumsByArtist(w http.ResponseWriter, r *http.Request) {
+	idParam := chi.URLParam(r, "id")
+	id, err := strconv.Atoi(idParam)
+	if err != nil {
+		jsonError(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	albums, err := c.service.GetAlbumsByArtistWithDetail(id)
+	if err != nil {
+		jsonError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	jsonResponse(w, albums, http.StatusOK)
+}
+
 func (c *LibraryController) GetAlbum(w http.ResponseWriter, r *http.Request) {
 	idParam := chi.URLParam(r, "id")
 	id, err := strconv.Atoi(idParam)
@@ -263,3 +278,18 @@ func (c *LibraryController) GetAlbum(w http.ResponseWriter, r *http.Request) {
 	}
 	jsonResponse(w, album, http.StatusOK)
 }
+
+func (c *LibraryController) GetAlbumCover(w http.ResponseWriter, r *http.Request) {
+	idParam := chi.URLParam(r, "id")
+	id, err := strconv.Atoi(idParam)
+	if err != nil {
+		jsonError(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	coverPath, err := c.service.GetAlbumCover(id)
+	if err != nil {
+		jsonError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	http.ServeFile(w, r, coverPath)
+}

internal/model/dto.go

@@ -20,7 +20,7 @@ type ArtistDetail struct {
 
 type AlbumDetail struct {
 	ID     int    `json:"id"`
-	Title   string `json:"title"`
-	Artist int    `json:"artist"`
+	Title  string `json:"title"`
+	Artist string `json:"artist"`
 	Songs  []int  `json:"songs"`
 }

internal/service/library.go

@@ -1,13 +1,16 @@
 package service
 
 import (
+	"butterfliu/config"
 	"butterfliu/internal/model"
 	"butterfliu/internal/repository"
 	"butterfliu/internal/scanner"
 	"errors"
 	"fmt"
 	"log"
+	"path"
 	"path/filepath"
+	"strconv"
 	"strings"
 )
 
@@ -75,6 +78,10 @@ func (s *LibraryService) GetSongsByAlbum(id int) ([]repository.SongDetail, error
 	return s.repo.GetSongsByAlbumWithDetails(id)
 }
 
+func (s *LibraryService) GetSongIDsByAlbum(id int) ([]repository.SongDetail, error) {
+	return s.repo.GetSongsByAlbumWithDetails(id)
+}
+
 func (s *LibraryService) GetArtists() ([]model.Artist, error) {
 	return s.repo.GetArtists()
 }
@@ -104,6 +111,31 @@ func (s *LibraryService) GetAlbums() ([]model.Album, error) {
 	return s.repo.GetAlbums()
 }
 
+func (s *LibraryService) GetAlbumsByArtistWithDetail(artistID int) ([]model.AlbumDetail, error) {
+	albums, err := s.repo.GetAlbumsByArtist(artistID)
+	if err != nil {
+		return nil, err
+	}
+	details := []model.AlbumDetail{}
+	for _, a := range albums {
+		songs, err := s.repo.GetSongIDsByAlbum(a.ID)
+		if err != nil {
+			break
+		}
+		artist, err := s.repo.GetArtist(artistID)
+		if err != nil {
+			break
+		}
+		details = append(details, model.AlbumDetail{
+			ID:     a.ID,
+			Title:  a.Title,
+			Artist: artist.Name,
+			Songs:  songs,
+		})
+	}
+	return details, nil
+}
+
 func (s *LibraryService) GetAlbum(id int) (model.AlbumDetail, error) {
 	album, err := s.repo.GetAlbum(id)
 	if err != nil {
@@ -113,14 +145,27 @@ func (s *LibraryService) GetAlbum(id int) (model.AlbumDetail, error) {
 	if err != nil {
 		return model.AlbumDetail{}, err
 	}
+	artist, err := s.repo.GetArtist(album.ArtistID)
+	if err != nil {
+		return model.AlbumDetail{}, err
+	}
 	return model.AlbumDetail{
 		ID:     id,
 		Title:  album.Title,
 		Songs:  songs,
-		Artist: album.ArtistID,
+		Artist: artist.Name,
 	}, nil
 }
 
+func (s *LibraryService) GetAlbumCover(id int) (string, error) {
+	songs, err := s.repo.GetSongIDsByAlbum(id)
+	if err != nil {
+		return "", err
+	}
+	conf := config.LoadConfig()
+	return path.Join(conf.GetCachePath("cover"), strconv.Itoa(songs[0])+".jpg"), nil
+}
+
 func (s *LibraryService) Scan(id int) (*ScanReport, error) {
 	lib, err := s.repo.GetByID(id)
 	if err != nil {