Optomize user list service query bind struct

Signed-off-by: Asai Neko <sugar@sne.moe>

api/user/list.go

@@ -9,15 +9,30 @@ import (
 )
 
 func (self *UserHandler) List(c *gin.Context) {
-	limit, limitStatus := c.GetQuery("limit")
+	type ListQuery struct {
-	offset, offsetStatus := c.GetQuery("offset")
+		Limit  *string `form:"limit"`
+		Offset *string `form:"offset"`
+	}
+
+	var query ListQuery
+	if err := c.ShouldBindQuery(&query); err != nil {
+		exception := new(exception.Builder).
+			SetStatus(exception.StatusClient).
+			SetService(exception.ServiceUser).
+			SetEndpoint(exception.EndpointUserServiceList).
+			SetType(exception.TypeCommon).
+			SetOriginal(exception.CommonErrorInvalidInput).
+			Throw(c).
+			String()
+
+		utils.HttpResponse(c, 400, exception)
+		return
+	}
 
 	userListPayload := &service.UserListPayload{
 		Context: c,
-		Limit:        &limit,
+		Limit:   query.Limit,
-		LimitStatus:  &limitStatus,
+		Offset:  query.Offset,
-		Offset:       &offset,
-		OffsetStatus: &offsetStatus,
 	}
 
 	result := self.svc.ListUsers(userListPayload)

service/user.go

@@ -281,9 +281,7 @@ func (self *UserServiceImpl) UpdateUserInfo(payload *UserInfoPayload) (result *U
 type UserListPayload struct {
 	Context context.Context
 	Limit   *string
-	LimitStatus  *bool
 	Offset  *string
-	OffsetStatus *bool
 }
 
 type UserListResult struct {
@@ -294,12 +292,12 @@ type UserListResult struct {
 // ListUsers
 func (self *UserServiceImpl) ListUsers(payload *UserListPayload) (result *UserListResult) {
 	var limit string
-	if !*payload.LimitStatus || *payload.Limit == "" {
+	if payload.Limit == nil || *payload.Limit == "" {
 		limit = "0"
 	}
 
 	var offset string
-	if !*payload.OffsetStatus || *payload.Offset == "" {
+	if payload.Offset == nil || *payload.Offset == "" {
 		exception := new(exception.Builder).
 			SetStatus(exception.StatusUser).
 			SetService(exception.ServiceUser).