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")
-	offset, offsetStatus := c.GetQuery("offset")
+	type ListQuery struct {
+		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,
-		LimitStatus:  &limitStatus,
-		Offset:       &offset,
-		OffsetStatus: &offsetStatus,
+		Context: c,
+		Limit:   query.Limit,
+		Offset:  query.Offset,
 	}
 
 	result := self.svc.ListUsers(userListPayload)