团购活动：定时退费

shared/db/ActivityGroupShopRefund.ts

@@ -0,0 +1,41 @@
+import BaseModel from './BaseModel';
+import { index, getModelForClass, prop, DocumentType } from '@typegoose/typegoose';
+
+export class RefundRec {
+  @prop({ required: true })
+  roleId: string;
+
+  @prop({ required: true })
+  itemId: number;
+
+  @prop({ required: true })
+  diff: number;
+}
+
+/**
+  * 活动系统 - 团购玩家记录
+*/
+@index({ activityId: 1 })
+
+export default class Activity_Group_Shop_Refund extends BaseModel {
+
+  @prop({ required: true })
+  activityId: number;				    // 活动Id
+
+  @prop({ required: true, type: RefundRec, _id: false })
+  refundRec: RefundRec[];				    // 是否退好费了
+
+  public static async check(activityId: number) {
+    return await ActivityGroupShopRefundModel.exists({ activityId });
+  }
+
+  public static async refund(activityId: number, refundRec: RefundRec[]) {
+    let result: ActivityGroupShopRefundRecType = await ActivityGroupShopRefundModel.findOneAndUpdate({ activityId }, { $set: { refundRec } },  { upsert: true, new: true }).lean();
+    return result;
+  }
+}
+
+export const ActivityGroupShopRefundModel = getModelForClass(Activity_Group_Shop_Refund);
+
+export interface ActivityGroupShopRefundRecType extends Pick<DocumentType<Activity_Group_Shop_Refund>, keyof Activity_Group_Shop_Refund> { }
+export type ActivityGroupShopRefundRecTypeParam = Partial<ActivityGroupShopRefundRecType>; // 将所有字段变成可选项