Fix: creat or load user error

internal/db/user.go

@@ -41,23 +41,24 @@ func CreateUser(username string, p provider.OAuth2Provider, puid uint, conf ...C
 	return u, err
 }
 
+// 只有当provider和puid没有找到对应的user时才会创建
 func CreateOrLoadUser(username string, p provider.OAuth2Provider, puid uint, conf ...CreateUserConfig) (*model.User, error) {
-	u := &model.User{
-		Username: username,
-		Role:     model.RoleUser,
-		Providers: []model.UserProvider{
-			{
-				Provider:       p,
-				ProviderUserID: puid,
-			},
-		},
-	}
-	for _, c := range conf {
-		c(u)
+	var user model.User
+	var userProvider model.UserProvider
+
+	if err := db.Where("provider = ? AND provider_user_id = ?", p, puid).First(&userProvider).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return CreateUser(username, p, puid, conf...)
+		} else {
+			return nil, err
+		}
+	} else {
+		if err := db.First(&user, userProvider.UserID).Error; err != nil {
+			return nil, err
+		}
 	}
-	return u, db.Preload("Providers", "provider = ? AND provider_user_id = ?", p, puid).
-		FirstOrCreate(u).
-		Error
+
+	return &user, nil
 }
 
 func GetUserByProvider(p provider.OAuth2Provider, puid uint) (*model.User, error) {