fix: reg

backend/internal/handlers/auth.go

@@ -2,6 +2,8 @@ package handlers
 
 import (
 	"errors"
+	"fmt"
+	"log"
 	"net/http"
 	"strings"
 
@@ -67,16 +69,18 @@ func (ag *AuthGroup) RegisterUser(c *gin.Context) {
 		return
 	}
 
-	if ag.Repo.ExistsByLogin(req.Login) {
-		c.JSON(http.StatusConflict, gin.H{"error": "login already exists"})
-		return
-	}
-
-	if _, err := ag.Repo.RegisterUser(req); err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to register user"})
+	id, err := ag.Repo.RegisterUser(req)
+	if err != nil {
+		if strings.Contains(err.Error(), "UNIQUE constraint") {
+			c.JSON(http.StatusConflict, gin.H{"error": "login already exists"})
+			return
+		}
+		log.Printf("[register] failed: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": fmt.Sprintf("failed to register user: %v", err)})
 		return
 	}
 
+	log.Printf("[register] user registered: id=%s login=%s", id, req.Login)
 	c.JSON(http.StatusOK, gin.H{"message": "user registered"})
 }