// services/api/src/albums/members.controller.ts —— /albums/{albumId}/members
// 端点（Task 17）。方法名与契约 operationId 一一对应（addAlbumMember/
// listAlbumMembers/removeAlbumMember）。控制器级 SessionGuard：三端点全需
// 认证。控制器只做认证用户透传 + 查询参数规整（shared/pagination 的
// parseLimit/parseCursor，同一契约 bounds/游标语义）；权限与 HTTP 映射由
// MembersService 抛 ApiException（404 ALBUM_NOT_FOUND / 403 AUTH_FORBIDDEN /
// 409 MEMBER_CONFLICT）。
import {
  Body,
  Controller,
  Delete,
  Get,
  HttpCode,
  HttpStatus,
  Param,
  Post,
  Query,
  Req,
  UseGuards,
} from '@nestjs/common';
import { AuthenticatedRequest, SessionGuard } from '../auth/session.guard';
import { userOf } from './albums.controller';
import { parseCursor, parseLimit } from '../shared/pagination';
import { MemberAddRequestDto } from './dto';
import {
  type MemberListResponse,
  type MemberResponse,
  MembersService,
} from './members.service';

@Controller('albums/:albumId/members')
@UseGuards(SessionGuard)
export class MembersController {
  constructor(private readonly membersService: MembersService) {}

  @Post()
  addAlbumMember(
    @Param('albumId') albumId: string,
    @Body() dto: MemberAddRequestDto,
    @Req() req: AuthenticatedRequest,
  ): Promise<MemberResponse> {
    return this.membersService.add(userOf(req), albumId, dto);
  }

  @Get()
  listAlbumMembers(
    @Param('albumId') albumId: string,
    @Query('cursor') cursor: string | undefined,
    @Query('limit') limit: string | undefined,
    @Req() req: AuthenticatedRequest,
  ): Promise<MemberListResponse> {
    return this.membersService.list(
      userOf(req),
      albumId,
      parseCursor(cursor),
      parseLimit(limit),
    );
  }

  @Delete(':userId')
  @HttpCode(HttpStatus.NO_CONTENT)
  removeAlbumMember(
    @Param('albumId') albumId: string,
    @Param('userId') userId: string,
    @Req() req: AuthenticatedRequest,
  ): Promise<void> {
    return this.membersService.remove(userOf(req), albumId, userId);
  }
}