optimize: MJ 部分调整、优化

MJ
增加simple-change、list接口，
变换和重试操作区别出来，价格与绘图一样
优化图片返回

model/midjourney.go

@@ -96,7 +96,7 @@ func GetAllUnFinishTasks() []*Midjourney {
 	return tasks
 }
 
-func GetByMJId(mjId string) *Midjourney {
+func GetByOnlyMJId(mjId string) *Midjourney {
 	var mj *Midjourney
 	var err error
 	err = DB.Where("mj_id = ?", mjId).First(&mj).Error
@@ -106,6 +106,26 @@ func GetByMJId(mjId string) *Midjourney {
 	return mj
 }
 
+func GetByMJId(userId int, mjId string) *Midjourney {
+	var mj *Midjourney
+	var err error
+	err = DB.Where("user_id = ? and mj_id = ?", userId, mjId).First(&mj).Error
+	if err != nil {
+		return nil
+	}
+	return mj
+}
+
+func GetByMJIds(userId int, mjIds []string) []*Midjourney {
+	var mj []*Midjourney
+	var err error
+	err = DB.Where("user_id = ? and mj_id in (?)", userId, mjIds).Find(&mj).Error
+	if err != nil {
+		return nil
+	}
+	return mj
+}
+
 func GetMjByuId(id int) *Midjourney {
 	var mj *Midjourney
 	var err error