support preview ad

src/ad/ad.controller.ts

-import { Controller, Get, Param, ParseIntPipe } from '@nestjs/common';
+import {
+  Controller,
+  DefaultValuePipe,
+  Get,
+  Param,
+  ParseIntPipe,
+  Query,
+} from '@nestjs/common';
 import { AdService } from './ad.service';
-import { ApiOkResponse, ApiOperation, ApiParam } from '@nestjs/swagger';
+import {
+  ApiOkResponse,
+  ApiOperation,
+  ApiParam,
+  ApiQuery,
+} from '@nestjs/swagger';
 import { ReturnMessageDto, StringReturnMessageDto } from 'nicot';
 import { Ad } from '../entities/ad.entity';
 
@@ -12,9 +24,12 @@ export class AdController {
 
   @Get('random')
   @ApiOperation({ summary: 'Get ad' })
+  @ApiQuery({ name: 'id', type: Number, required: false })
   @ApiOkResponse({ type: AdReturnMessageDto })
-  async getAd() {
-    return new AdReturnMessageDto(200, 'success', await this.ad.getAd());
+  async getAd(
+    @Query('id', new DefaultValuePipe(0), new ParseIntPipe()) id: number,
+  ) {
+    return new AdReturnMessageDto(200, 'success', await this.ad.getAd(id));
   }
 
   @Get('click/:id')

src/ad/ad.service.ts

@@ -2,7 +2,7 @@ import { Injectable } from '@nestjs/common';
 import { BlankReturnMessageDto, CrudService } from 'nicot';
 import { Ad } from '../entities/ad.entity';
 import { InjectDataSource } from '@nestjs/typeorm';
-import { DataSource } from 'typeorm';
+import { DataSource, FindOptionsWhere } from 'typeorm';
 
 @Injectable()
 export class AdService extends CrudService(Ad) {
@@ -10,11 +10,10 @@ export class AdService extends CrudService(Ad) {
     super(db.getRepository(Ad));
   }
 
-  async getAd() {
+  async getAd(id?: number) {
+    const cond: FindOptionsWhere<Ad> = id ? { id } : { enabled: true };
     const activeAds = await this.repo.find({
-      where: {
-        enabled: true,
-      },
+      where: cond,
       select: {
         id: true,
         content: true,
@@ -35,7 +34,7 @@ export class AdService extends CrudService(Ad) {
   async clickAd(id: number) {
     const ad = await this.repo.findOne({
       where: {
-        enabled: true,
+        // enabled: true,
         id,
       },
       select: {