refactor(catalog): 废弃 LEWAN_ 镜像，统一英文 SKU 与积分价，商品图按 SKU 缓存

对外目录只保留英文主 sku；迁移硬删镜像并校准 1元=100积分；发货页/凭证优先使用 local {sku}.webp。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-14 20:00:26 +08:00
parent bf9614569e
commit df1a170d44
57 changed files with 1052 additions and 171 deletions
@@ -72,7 +72,8 @@ func (h *DeliveryHandler) Submit(c *gin.Context) {
 	response.OK(c, result)
 }

-// ImageProxy 代理图片并支持本地持久化缓存，杜绝跨域污染和远端加载失败。
+// ImageProxy 代理外链图片并落盘缓存（仅无本地 SKU 图时的兜底）。
+// 正式商品图请使用 frontend/public/images/products/{sku}.webp（go run ./cmd/sync_product_images）。
 func (h *DeliveryHandler) ImageProxy(c *gin.Context) {
 	rawURL := strings.TrimSpace(c.Query("url"))
 	if rawURL == "" || (!strings.HasPrefix(rawURL, "http://") && !strings.HasPrefix(rawURL, "https://")) {
@@ -80,33 +81,57 @@ func (h *DeliveryHandler) ImageProxy(c *gin.Context) {
 		return
 	}

-	// 1. 优先检查本地官方商品图片缓存
-	for _, base := range []string{"data/uploads/products", "../data/uploads/products", "uploads/products"} {
-		if strings.Contains(rawURL, "/products/") {
-			parts := strings.Split(rawURL, "/products/")
-			if len(parts) > 1 {
-				sub := strings.Split(parts[1], "/")
-				if len(sub) > 0 && sub[0] != "" {
-					localPath := filepath.Join(base, sub[0]+".webp")
-					if info, err := os.Stat(localPath); err == nil && info.Size() > 0 {
-						c.Header("Cache-Control", "public, max-age=2592000, immutable")
-						c.File(localPath)
-						return
-					}
-				}
+	sku := strings.TrimSpace(c.Query("sku"))
+	publicDirs := []string{
+		"../frontend/public/images/products",
+		"frontend/public/images/products",
+		"public/images/products",
+	}
+	uploadDirs := []string{"data/uploads/products", "../data/uploads/products", "uploads/products"}
+
+	tryLocal := func(dirs []string, name string) bool {
+		if name == "" {
+			return false
+		}
+		for _, base := range dirs {
+			localPath := filepath.Join(base, name+".webp")
+			if info, err := os.Stat(localPath); err == nil && info.Size() > 0 {
+				c.Header("Cache-Control", "public, max-age=2592000, immutable")
+				c.File(localPath)
+				return true
 			}
 		}
-		// 按 URL SHA256 哈希查本地缓存
-		hash := sha256.Sum256([]byte(rawURL))
-		hashPath := filepath.Join(base, hex.EncodeToString(hash[:])+".webp")
-		if info, err := os.Stat(hashPath); err == nil && info.Size() > 0 {
-			c.Header("Cache-Control", "public, max-age=2592000, immutable")
-			c.File(hashPath)
-			return
-		}
+		return false
 	}

-	// 2. 本地无缓存时请求远端
+	// 1. 优先 SKU 命名的静态缓存
+	if tryLocal(publicDirs, sku) {
+		return
+	}
+
+	// 2. 历史：URL 中的乐玩 UUID → 先查 public，再查 uploads
+	var uuidName string
+	if strings.Contains(rawURL, "/products/") {
+		parts := strings.Split(rawURL, "/products/")
+		if len(parts) > 1 {
+			sub := strings.Split(parts[1], "/")
+			if len(sub) > 0 && sub[0] != "" {
+				uuidName = sub[0]
+			}
+		}
+	}
+	if tryLocal(publicDirs, uuidName) || tryLocal(uploadDirs, uuidName) {
+		return
+	}
+
+	// 3. URL hash 缓存（uploads 运行时兜底）
+	hash := sha256.Sum256([]byte(rawURL))
+	hashName := hex.EncodeToString(hash[:])
+	if tryLocal(uploadDirs, hashName) {
+		return
+	}
+
+	// 4. 本地无缓存时请求远端
 	req, err := http.NewRequestWithContext(c.Request.Context(), http.MethodGet, rawURL, nil)
 	if err != nil {
 		response.BadRequest(c, "构建请求失败")
@@ -131,20 +156,10 @@ func (h *DeliveryHandler) ImageProxy(c *gin.Context) {
 		return
 	}

-	// 3. 异步/同步回写到本地磁盘缓存
+	// 5. 仅将未知外链写入 uploads 哈希缓存（不再按 UUID 污染正式目录）
 	cacheDir := "data/uploads/products"
 	_ = os.MkdirAll(cacheDir, 0755)
-	if strings.Contains(rawURL, "/products/") {
-		parts := strings.Split(rawURL, "/products/")
-		if len(parts) > 1 {
-			sub := strings.Split(parts[1], "/")
-			if len(sub) > 0 && sub[0] != "" {
-				_ = os.WriteFile(filepath.Join(cacheDir, sub[0]+".webp"), data, 0644)
-			}
-		}
-	}
-	hash := sha256.Sum256([]byte(rawURL))
-	_ = os.WriteFile(filepath.Join(cacheDir, hex.EncodeToString(hash[:])+".webp"), data, 0644)
+	_ = os.WriteFile(filepath.Join(cacheDir, hashName+".webp"), data, 0644)

 	contentType := resp.Header.Get("Content-Type")
 	if contentType == "" {