feat: UploadService controller with ratelimit middleware

backend/internal/middleware/ratelimit.go

@@ -0,0 +1,37 @@
+// Copyright (c) 2025 Nikolai Papin
+//
+// This file is part of Easywish
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package middleware
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"golang.org/x/time/rate"
+)
+
+func RateLimitMiddleware(r rate.Limit, b int) gin.HandlerFunc {
+    limiter := rate.NewLimiter(r, b)
+
+    return func(c *gin.Context) {
+        if !limiter.Allow() {
+            c.AbortWithStatus(http.StatusTooManyRequests)
+            return
+        }
+        c.Next()
+    }
+}