import { Controller, Get, Param, Query, Req, Sse, UnauthorizedException, UseGuards } from '@nestjs/common';
import { AuthenticatedRequest } from 'src/model/interface/authenticated-request.interface';
import { SseTicketService } from './sse-ticket.service';
import { AuthGuard } from 'src/core/guards/auth.guard';
import { finalize, Observable } from 'rxjs';
import { SseService } from './sse.service';

@Controller('sse')
export class SseController {

  constructor(private ticketService: SseTicketService, private sseService: SseService) {}

  @UseGuards(AuthGuard)
  @Get('ticket')
  getTicket(@Req() req: AuthenticatedRequest) {
    return this.ticketService.generateTicket(req.user.id)
  }

  @Sse('key')
  async sse(@Query('ticket') ticket: string): Promise<Observable<any>> {
    const userId = this.ticketService.getUserIdToTicket(ticket);
    if (!userId) throw new UnauthorizedException('Invalid/expired ticket');
    if (!userId) throw new UnauthorizedException('Invalid/expired ticket');
    

    return this.sseService.register(userId).pipe(
      finalize(() => {
        this.sseService.unregister(userId)
      })
    );
  }
}