disable /register if a user exist

controllers/userController.go

@@ -2,7 +2,6 @@ package controllers
 
 import (
 	"fmt"
-	"math/rand"
 	"net/http"
 
 	"github.com/gin-gonic/gin"
@@ -182,6 +181,38 @@ func (rc *UserController) RegisterView(c *gin.Context) {
 	c.HTML(http.StatusOK, "register.html", data)
 }
 
+func (rc *UserController) InitAdmin(c *gin.Context) {
+	isEmpty, err := repositories.Users.IsEmpty()
+
+	if err != nil {
+		data := gin.H{
+			"error":   err,
+			"success": "",
+		}
+
+		c.HTML(http.StatusInternalServerError, "error.html", data)
+		return
+	}
+
+	if !isEmpty {
+		data := gin.H{
+			"error":   "Registration is closed",
+			"success": "",
+		}
+
+		c.HTML(http.StatusInternalServerError, "error.html", data)
+		return
+
+	}
+
+	data := gin.H{
+		"error":   "",
+		"success": "",
+	}
+
+	c.HTML(http.StatusOK, "register.html", data)
+}
+
 func (rc *UserController) ResetView(c *gin.Context) {
 	shopItems, _ := repositories.ShopItems.GetAll()