Change the shows image path

From img/shows/ttXXXXX-1-1.png and img/shows/ttXXXXX-banner.png
To   img/shows/ttXXXXX/1-1.png and img/shows/ttXXXXX/banner.png

Rewrite things while we're here

Example of scripts to migrate from old path to new path:

dir="shows"
for file in "$dir"/*; do
        # Replace the first - by a / in order to get the new image path
        newfile=$(echo "$file" | sed 's/-/\//')
        # Delete everything after the first - in order to get the show path
        showpath=$(echo "$file" | sed 's/-.*//')
        [ ! -d "$showpath" ] && mkdir "$showpath"
        mv "$file" "$newfile"
done

backend/shows/shows.go

@@ -160,18 +160,41 @@ func (s *Show) GetImageURL(imgType string) string {
 
 // downloadImages will download the show images
 func (s *Show) downloadImages(env *web.Env) {
-	// Download the banner
-	err := web.Download(s.Show.Banner, s.imgFile("banner"), false)
-	if err != nil {
-		env.Log.Errorf("failed to dowload banner: %s", err)
+	// Create the directory for the show if it doesn't exist
+	if _, err := os.Stat(s.imgDirectory()); err != nil {
+		if err = os.Mkdir(s.imgDirectory(), os.ModePerm); err != nil {
+			env.Log.Warnf("couldn't create show directory %s: %s", s.imgDirectory(), err)
+			return
+		}
 	}
-	err = web.Download(s.Show.Fanart, s.imgFile("fanart"), false)
-	if err != nil {
-		env.Log.Errorf("failed to dowload fanart: %s", err)
-	}
-	err = web.Download(s.Show.Poster, s.imgFile("poster"), true)
-	if err != nil {
-		env.Log.Errorf("failed to dowload poster: %s", err)
+	// Download the show images
+	for _, img := range []struct {
+		url     string
+		urlType string
+		scale   bool
+	}{
+		{
+			url:     s.Show.Banner,
+			urlType: "banner",
+			scale:   false,
+		},
+		{
+			url:     s.Show.Fanart,
+			urlType: "fanart",
+			scale:   false,
+		},
+		{
+			url:     s.Show.Poster,
+			urlType: "poster",
+			scale:   true,
+		},
+	} {
+		if img.url == "" {
+			continue
+		}
+		if err := web.Download(img.url, s.imgFile(img.urlType), img.scale); err != nil {
+			env.Log.Errorf("failed to dowload %s: %s", img.urlType, err)
+		}
 	}
 
 	// Download episode thumbs
@@ -180,16 +203,21 @@ func (s *Show) downloadImages(env *web.Env) {
 			continue
 		}
 
-		err = web.Download(e.Thumb, s.imgFile(fmt.Sprintf("%d-%d", e.Season, e.Episode)), false)
+		err := web.Download(e.Thumb, s.imgFile(fmt.Sprintf("%d-%d", e.Season, e.Episode)), false)
 		if err != nil {
-			env.Log.Errorf("failed to dowload the thumb for season %d episode %d: %s", e.Season, e.Episode, err)
+			env.Log.Errorf("failed to dowload the thumb for season %d episode %d ( %s ) : %s", e.Season, e.Episode, e.Thumb, err)
 		}
 	}
 }
 
 // imgURL returns the default image url
 func (s *Show) imgURL(imgType string) string {
-	return fmt.Sprintf("shows/%s-%s.jpg", s.ImdbID, imgType)
+	return fmt.Sprintf("shows/%s/%s.jpg", s.ImdbID, imgType)
+}
+
+// imgDirectory returns the directory containing all the show images
+func (s *Show) imgDirectory() string {
+	return filepath.Join(s.publicDir, "img", fmt.Sprintf("shows/%s", s.ImdbID))
 }
 
 // imgFile returns the image location on disk