// services/api/src/interactions/likes.controller.ts —— 点赞批次端点
// （P2 Task 7，ov 域）。路由与契约 likePhotoBatch 一致（tags [interactions]，
// 路径前缀不变、部署域名区分）；匿名（无 SessionGuard）。IP 取 req.ip 并
// 归一 IPv6 映射前缀（::ffff:127.0.0.1 → 127.0.0.1），仅作限速键——不落库、
// 不进日志（匿名观众端无 IP 留存需求）。真实部署经反代时应配置 trust proxy
// 系按部署环境处理，登记 P5。
import {
  Body,
  Controller,
  HttpCode,
  HttpStatus,
  Ip,
  Param,
  Post,
} from '@nestjs/common';
import { LikeBatchDto } from './dto';
import { LikesService, type LikeBatchResponse } from './likes.service';

@Controller('public/albums')
export class LikesController {
  constructor(private readonly likes: LikesService) {}

  /** 契约 200（含幂等重试与过期拒绝——拒绝也 200，语义在 batchAccepted）。 */
  @HttpCode(HttpStatus.OK)
  @Post(':token/photos/:photoId/likes')
  likeBatch(
    @Param('token') token: string,
    @Param('photoId') photoId: string,
    @Body() dto: LikeBatchDto,
    @Ip() ip: string | undefined,
  ): Promise<LikeBatchResponse> {
    const clientIp = ip === undefined ? undefined : ip.replace(/^::ffff:/, '');
    return this.likes.likeBatch(token, photoId, dto, clientIp);
  }
}