helix-engage-server/src/ozonetel/kookoo-ivr.controller.ts

import { Controller, Get, Query, Logger, Header } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';

@Controller('kookoo')
export class KookooIvrController {
  private readonly logger = new Logger(KookooIvrController.name);
  private readonly sipId: string;
  private readonly callerId: string;

  constructor(private config: ConfigService) {
    this.sipId = process.env.OZONETEL_SIP_ID ?? '523590';
    this.callerId = process.env.OZONETEL_DID ?? '918041763265';
  }

  @Get('ivr')
  @Header('Content-Type', 'application/xml')
  handleIvr(@Query() query: Record<string, any>): string {
    const event = query.event ?? '';
    const sid = query.sid ?? '';
    const cid = query.cid ?? '';
    const status = query.status ?? '';

    this.logger.log(
      `Kookoo IVR: event=${event} sid=${sid} cid=${cid} status=${status}`,
    );

    // New outbound call — customer answered, put them in a conference room
    // The room ID is based on the call SID so we can join from the browser
    if (event === 'NewCall') {
      this.logger.log(
        `Customer ${cid} answered — dialing DID ${this.callerId} to route to agent`,
      );
      return `<?xml version="1.0" encoding="UTF-8"?>
<response>
<dial record="true" timeout="30" moh="ring">${this.callerId}</dial>
</response>`;
    }

    // Conference event — user left with #
    if (event === 'conference' || event === 'Conference') {
      this.logger.log(`Conference event: status=${status}`);
      return `<?xml version="1.0" encoding="UTF-8"?>
<response>
<hangup/>
</response>`;
    }

    // Dial or Disconnect
    this.logger.log(`Call ended: event=${event}`);
    return `<?xml version="1.0" encoding="UTF-8"?>
<response>
<hangup/>
</response>`;
  }
}