import {
  Controller,
  Get,
  Post,
  Delete,
  Param,
  Query,
  UseGuards,
  Req,
  HttpCode,
  HttpStatus,
} from '@nestjs/common';
import { ApiTags, ApiOperation, ApiBearerAuth } from '@nestjs/swagger';
import { ChartsService, ChartPeriod } from './charts.service';
import { AuthGuard } from '../auth/auth.guard';
import { OptionalAuthGuard } from '../auth/optional-auth.guard';
import type { Request } from 'express';

@ApiTags('charts')
@Controller('charts')
export class ChartsController {
  constructor(private readonly chartsService: ChartsService) {}

  @Get('tracks')
  @ApiOperation({ summary: 'Чарт треков за период' })
  async getTopTracks(
    @Query('period') period: string = 'week',
    @Query('limit') limit: string = '100',
    @Query('genre') genre?: string,
  ) {
    const validPeriod: ChartPeriod =
      period === 'day' || period === 'week' || period === 'month' || period === 'all'
        ? (period as ChartPeriod)
        : 'week';
    const parsedLimit = Math.min(Math.max(parseInt(limit, 10) || 100, 1), 200);
    const genreFilter = genre?.trim() ? genre.trim() : undefined;
    return this.chartsService.getTopTracks(validPeriod, parsedLimit, genreFilter);
  }

  @Get('genres')
  @ApiOperation({ summary: 'Список доступных жанров для фильтра' })
  async getGenres() {
    return this.chartsService.getGenres();
  }

  @Get('tracks/:trackId')
  @UseGuards(OptionalAuthGuard)
  @ApiOperation({ summary: 'Детальная страница трека' })
  async getTrackDetail(
    @Param('trackId') trackId: string,
    @Req() req: Request,
  ) {
    const user = req['user'] as { sub: string } | undefined;
    return this.chartsService.getTrackDetail(trackId, user?.sub);
  }

  @Post('tracks/:trackId/like')
  @UseGuards(AuthGuard)
  @ApiBearerAuth()
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Лайкнуть трек' })
  async likeTrack(
    @Param('trackId') trackId: string,
    @Req() req: Request,
  ) {
    const user = req['user'] as { sub: string; email: string };
    return this.chartsService.likeTrack(trackId, user.sub);
  }

  @Delete('tracks/:trackId/like')
  @UseGuards(AuthGuard)
  @ApiBearerAuth()
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Убрать лайк с трека' })
  async unlikeTrack(
    @Param('trackId') trackId: string,
    @Req() req: Request,
  ) {
    const user = req['user'] as { sub: string; email: string };
    return this.chartsService.unlikeTrack(trackId, user.sub);
  }
}