first try

controllers/authController.go

@@ -0,0 +1,17 @@
+package controllers
+
+import (
+	"net/http"
+
+	"gitea.tbdevent.eu/TBD/reforger_crawler_main/initializers"
+	"github.com/gin-gonic/gin"
+)
+
+func CheckAllowed(c *gin.Context) {
+	secret := c.GetHeader("X-SECRET-KEY")
+	if secret != initializers.SECRET {
+		c.JSON(http.StatusForbidden, gin.H{"error": "Forbidden"})
+		c.Abort()
+		return
+	}
+}