feat: gzip middleware.

middleware/gzip.go

@@ -0,0 +1,22 @@
+package middleware
+
+import (
+	"compress/gzip"
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func GzipMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if c.Request.Header.Get("Content-Encoding") == "gzip" {
+			gzReader, err := gzip.NewReader(c.Request.Body)
+			if err != nil {
+				c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "Invalid gzip format"})
+				return
+			}
+			defer gzReader.Close()
+			c.Request.Body = gzReader
+		}
+		c.Next()
+	}
+}