精简后的项目：仅保留 api/ui 源码、文档、构建依赖

api/routes/photos.go

@@ -0,0 +1,81 @@
+package routes
+
+import (
+	"net/http"
+	"os"
+
+	"github.com/gorilla/mux"
+	"gorm.io/gorm"
+
+	"github.com/photoview/photoview/api/graphql/models"
+	"github.com/photoview/photoview/api/log"
+	"github.com/photoview/photoview/api/scanner"
+)
+
+func RegisterPhotoRoutes(db *gorm.DB, router *mux.Router) {
+
+	router.HandleFunc("/{name}", func(w http.ResponseWriter, r *http.Request) {
+		mediaName := mux.Vars(r)["name"]
+
+		var mediaURL models.MediaURL
+		result := db.Model(&models.MediaURL{}).Joins("Media").Select("media_urls.*").Where("media_urls.media_name = ?", mediaName).Scan(&mediaURL)
+		if err := result.Error; err != nil {
+			w.WriteHeader(http.StatusNotFound)
+			w.Write([]byte("404"))
+			return
+		}
+
+		media := mediaURL.Media
+		if media == nil {
+			w.WriteHeader(http.StatusNotFound)
+			w.Write([]byte("404 - Media not found"))
+			return
+		}
+
+		if success, response, status, err := authenticateMedia(media, db, r); !success {
+			if err != nil {
+				log.Warn(r.Context(), "Unauthorized access to photo", "reason", err)
+			}
+			w.WriteHeader(status)
+			w.Write([]byte(response))
+			return
+		}
+
+		cachedPath, err := mediaURL.CachedPath()
+		if err != nil {
+			log.Error(r.Context(), "error getting cached path for media URL", "error", err)
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(internalServerError))
+			return
+		}
+
+		if _, err := os.Stat(cachedPath); os.IsNotExist((err)) {
+			// err := db.Transaction(func(tx *gorm.DB) error {
+			if err = scanner.ProcessSingleMediaFunc(r.Context(), db, media); err != nil {
+				log.Error(r.Context(), "processing image not found in cache",
+					"media_cache_path", cachedPath,
+					"error", err)
+				w.WriteHeader(http.StatusInternalServerError)
+				w.Write([]byte(internalServerError))
+				return
+			}
+
+			if _, err = os.Stat(cachedPath); err != nil {
+				log.Error(r.Context(), "after reprocessing image not found in cache",
+					"media_cache_path", cachedPath,
+					"error", err)
+				w.WriteHeader(http.StatusInternalServerError)
+				w.Write([]byte(internalServerError))
+				return
+			}
+		}
+
+		// Allow caching the resource
+		w.Header().Set("Cache-Control", "private, max-age=31536000, immutable")
+		if mediaURL.ContentType != "" {
+			w.Header().Set("Content-Type", mediaURL.ContentType)
+		}
+
+		http.ServeFile(w, r, cachedPath)
+	})
+}