支持 S3 兼容对象存储 (#336)

* feat(storage): 支持 S3 对象存储

* fix(storage): 补齐 S3 对象文件后缀

backend/internal/handler/user_data.go

@@ -92,6 +92,28 @@ func RegisterUserDataRoutes(r *gin.RouterGroup, svc *service.Service) {
 		}
 		ok(c, gin.H{"setting": setting})
 	})
+	r.POST("/settings/oss/test", func(c *gin.Context) {
+		user, err := currentUser(c, svc)
+		if err != nil {
+			failService(c, err)
+			return
+		}
+		if !enforceRateLimit(c, "user-storage-test:"+user.ID, 6, time.Minute) {
+			return
+		}
+		c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 64<<10)
+		var req service.OSSSettingRequest
+		if err := c.ShouldBindJSON(&req); err != nil {
+			fail(c, http.StatusBadRequest, err)
+			return
+		}
+		result, err := svc.TestUserOSSSetting(user, req)
+		if err != nil {
+			failService(c, err)
+			return
+		}
+		ok(c, result)
+	})
 	r.GET("/resources", func(c *gin.Context) {
 		user, err := currentUser(c, svc)
 		if err != nil {