import { Controller, Post, Body, Get, HttpCode, HttpStatus, ValidationPipe } from '@nestjs/common';
import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';
import { WaitlistService } from './waitlist.service';
import { CreateWaitlistDto } from './dto/create-waitlist.dto';

@ApiTags('waitlist')
@Controller('waitlist')
export class WaitlistController {
  constructor(private readonly waitlistService: WaitlistService) {}

  @Post()
  @HttpCode(HttpStatus.CREATED)
  @ApiOperation({ summary: '加入等待名单', description: '提交邮箱加入产品等待名单' })
  @ApiResponse({ status: 201, description: '成功加入等待名单' })
  @ApiResponse({ status: 400, description: '邮箱无效或缺少必填字段' })
  @ApiResponse({ status: 409, description: '该邮箱已报名' })
  async create(@Body(new ValidationPipe({ transform: true })) createWaitlistDto: CreateWaitlistDto) {
    const entry = await this.waitlistService.create(createWaitlistDto);
    return {
      success: true,
      message: '已成功加入等待名单',
      data: {
        id: entry.id,
        email: entry.email,
        createdAt: entry.createdAt,
      },
    };
  }

  @Get()
  @ApiOperation({ summary: '获取等待名单', description: '获取所有等待名单报名记录（管理员）' })
  @ApiResponse({ status: 200, description: '等待名单列表' })
  async findAll() {
    return this.waitlistService.findAll();
  }

  @Get('stats')
  @ApiOperation({ summary: '获取报名统计', description: '获取等待名单的聚合统计数据' })
  @ApiResponse({ status: 200, description: '报名统计数据，包含设备分布和兴趣方向' })
  async getStats() {
    return this.waitlistService.getStats();
  }
}