refactor validation error and user register response

api/BaseResponse.go

@@ -1,6 +1,44 @@
 package api
 
-import "github.com/gin-gonic/gin"
+import (
+	"errors"
+	"fmt"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-playground/validator/v10"
+)
+
+type APIValidationError struct {
+	Field string `json:"field"`
+	Msg   string `json:"msg"`
+}
+
+func validationErrorMsg(field string, param string, tag string) string {
+	switch tag {
+	case "min":
+		return fmt.Sprintf("%s character min %s", field, param)
+	case "required":
+		return fmt.Sprintf("%s is %s", field, tag)
+	default:
+		return fmt.Sprintf("%s %s", field, tag)
+	}
+}
+
+func ValidationErrorResponse(err error) gin.H {
+	var ves validator.ValidationErrors
+	var temp []APIValidationError
+	if errors.As(err, &ves) {
+		out := make([]APIValidationError, len(ves))
+		for i, ve := range ves {
+			out[i] = APIValidationError{ve.Field(), validationErrorMsg(ve.Field(), ve.Param(), ve.ActualTag())}
+		}
+		temp = out
+	}
+	return gin.H{
+		"message": "Validation error",
+		"errors":  temp,
+	}
+}
 
 func ErrorResponse(err error, msg string) gin.H {
 	return gin.H{

api/user.go

@@ -2,14 +2,12 @@ package api
 
 import (
 	"database/sql"
-	"errors"
-	"fmt"
 	"net/http"
+	"time"
 
 	db "git.nochill.in/nochill/hiling_go/db/sqlc"
 	"git.nochill.in/nochill/hiling_go/util"
 	"github.com/gin-gonic/gin"
-	"github.com/go-playground/validator/v10"
 	"github.com/lib/pq"
 )
 
@@ -25,40 +23,19 @@ type createUserResponse struct {
 	BannedAt      sql.NullTime `json:"banned_at"`
 	BannedUntil   sql.NullTime `json:"banned_until"`
 	BanReason     string       `json:"ban_reason"`
-	IsPermaban    sql.NullBool `json:"is_permaban"`
-	IsAdmin       sql.NullBool `json:"is_admin"`
-	IsCritics     sql.NullBool `json:"is_critics"`
-	IsVerified    sql.NullBool `json:"is_verified"`
-	CreatedAt     sql.NullTime `json:"created_at"`
-	UpdatedAt     sql.NullTime `json:"updated_at"`
-}
-
-type ApiError struct {
-	Field string
-	Msg   string
-}
-
-func msgForTag(field string, param string, tag string) string {
-	switch tag {
-	case "min":
-		return fmt.Sprintf("%s character min %s", field, param)
-	default:
-		return fmt.Sprintf("%s %s", field, tag)
-	}
+	IsPermaban    bool         `json:"is_permaban"`
+	IsAdmin       bool         `json:"is_admin"`
+	IsCritics     bool         `json:"is_critics"`
+	IsVerified    bool         `json:"is_verified"`
+	CreatedAt     time.Time    `json:"created_at"`
+	UpdatedAt     time.Time    `json:"updated_at"`
 }
 
 func (server *Server) createUser(ctx *gin.Context) {
 	var req createUserRequest
 	if err := ctx.ShouldBindJSON(&req); err != nil {
 		if err != nil {
-			var ve validator.ValidationErrors
-			if errors.As(err, &ve) {
-				out := make([]ApiError, len(ve))
-				for i, fe := range ve {
-					out[i] = ApiError{fe.Field(), msgForTag(fe.Field(), fe.Param(), fe.Tag())}
-				}
-				ctx.JSON(http.StatusBadRequest, gin.H{"errors": out})
-			}
+			ctx.JSON(http.StatusBadRequest, ValidationErrorResponse(err))
 			return
 		}
 	}
@@ -79,7 +56,8 @@ func (server *Server) createUser(ctx *gin.Context) {
 		if pqErr, ok := err.(*pq.Error); ok {
 			switch pqErr.Code.Name() {
 			case "foreign_key_violation", "unique_violation":
-				ctx.JSON(http.StatusConflict, ErrorResponse(err, "Something went wrong while try to save"))
+				ctx.JSON(http.StatusConflict, ErrorResponse(err, "Username already used"))
+				return
 			}
 		}
 
@@ -94,12 +72,12 @@ func (server *Server) createUser(ctx *gin.Context) {
 		BannedAt:      sql.NullTime{Valid: user.BannedAt.Valid, Time: user.BannedAt.Time},
 		BannedUntil:   sql.NullTime{Valid: user.BannedUntil.Valid, Time: user.BannedUntil.Time},
 		BanReason:     user.BanReason.String,
-		IsPermaban:    user.IsPermaban,
-		IsAdmin:       user.IsAdmin,
-		IsCritics:     user.IsCritics,
-		IsVerified:    user.IsVerified,
-		CreatedAt:     sql.NullTime{Valid: true, Time: user.CreatedAt.Time},
-		UpdatedAt:     sql.NullTime{Valid: true, Time: user.UpdatedAt.Time},
+		IsPermaban:    user.IsPermaban.Bool,
+		IsAdmin:       user.IsAdmin.Bool,
+		IsCritics:     user.IsCritics.Bool,
+		IsVerified:    user.IsVerified.Bool,
+		CreatedAt:     user.CreatedAt.Time,
+		UpdatedAt:     user.UpdatedAt.Time,
 	}
 
 	ctx.JSON(http.StatusOK, res)