feat: 付费体系重构 P0 - 配额独立化/简历付费下载/PDF生成

backend/src/modules/resume/resume.controller.ts

@@ -1,10 +1,17 @@
-import { Controller, Post, Get, Delete, Param, Body } from '@nestjs/common'
+import { Controller, Post, Get, Delete, Param, Body, Res, HttpException, HttpStatus } from '@nestjs/common'
+import { Response } from 'express'
 import { ResumeService } from './resume.service'
+import { ResumePdfService } from './resume-pdf.service'
+import { QuotaService } from '../user/quota.service'
 import { CurrentUser } from '../../common/decorators/current-user.decorator'
 
 @Controller('resume')
 export class ResumeController {
-  constructor(private resumeService: ResumeService) {}
+  constructor(
+    private resumeService: ResumeService,
+    private resumePdfService: ResumePdfService,
+    private quotaService: QuotaService,
+  ) {}
 
   @Post('create')
   async create(
@@ -21,6 +28,31 @@ export class ResumeController {
     return this.resumeService.list(userId)
   }
 
+  @Post(':id/download')
+  async download(@Param('id') id: string, @CurrentUser('userId') userId: string, @Res() res: Response) {
+    const resume = await this.resumeService.getDetail(id, userId)
+
+    const canDownload = await this.quotaService.checkDownload(userId, resume)
+    if (!canDownload) {
+      throw new HttpException('请先付费下载', HttpStatus.PAYMENT_REQUIRED)
+    }
+
+    await this.quotaService.deductDownload(userId, resume)
+    if (!resume.paidDownload) {
+      await this.resumeService.markPaid(id, userId)
+    }
+
+    const pdf = await this.resumePdfService.generatePdf({
+      title: resume.title,
+      content: resume.content,
+      targetPosition: resume.targetPosition,
+    })
+
+    res.setHeader('Content-Type', 'application/pdf')
+    res.setHeader('Content-Disposition', `attachment; filename="${encodeURIComponent(resume.title)}.pdf"`)
+    res.send(pdf)
+  }
+
   @Get(':id')
   async getDetail(@Param('id') id: string, @CurrentUser('userId') userId: string) {
     return this.resumeService.getDetail(id, userId)