import {
  Body,
  Controller,
  Delete,
  ForbiddenException,
  Get,
  Param,
  ParseUUIDPipe,
  Patch,
  Post,
  Query,
  Req,
} from '@nestjs/common';
import { Request } from 'express';
import { CreateFavoriteDto } from './dto/create-favorite.dto';
import { UpdateFavoriteDto } from './dto/update-favorite.dto';
import { FavoritesService } from './favorites.service';

/**
 * REST controller for per-user, per-widget favorite links.
 *
 * All routes are protected by the global JwtAuthGuard + TenantGuard.
 *
 * Routes:
 * - GET  /favorites?widgetId=   — list favorites for a widget instance
 * - POST /favorites             — create a favorite (triggers server-side icon discovery)
 * - PATCH /favorites/:id        — update a favorite (ownership verified in service)
 * - DELETE /favorites/:id       — delete a favorite (ownership verified in service)
 */
@Controller('favorites')
export class FavoritesController {
  constructor(private readonly favoritesService: FavoritesService) {}

  private extractContext(req: Request) {
    const userId = (req as any).user?.id;
    const tenantId =
      (req as any).tenantId ?? (req as any).user?.tenantId;

    if (!tenantId) {
      throw new ForbiddenException('No tenant context');
    }
    if (!userId) {
      throw new ForbiddenException('No user context');
    }

    return { userId, tenantId };
  }

  @Get()
  async list(
    @Query('widgetId', ParseUUIDPipe) widgetId: string,
    @Req() req: Request,
  ) {
    const { userId } = this.extractContext(req);

    return this.favoritesService.list(userId, widgetId);
  }

  @Post()
  async create(
    @Body() dto: CreateFavoriteDto,
    @Req() req: Request,
  ) {
    const { userId, tenantId } = this.extractContext(req);

    return this.favoritesService.create(userId, tenantId, dto);
  }

  @Patch(':id')
  async update(
    @Param('id') id: string,
    @Body() dto: UpdateFavoriteDto,
    @Req() req: Request,
  ) {
    const { userId } = this.extractContext(req);

    return this.favoritesService.update(id, userId, dto);
  }

  @Delete(':id')
  async remove(
    @Param('id') id: string,
    @Req() req: Request,
  ) {
    const { userId } = this.extractContext(req);

    return this.favoritesService.remove(id, userId);
  }
}