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

import { Controller, Get, Query, Logger, Header } from '@nestjs/common';
import { TelephonyConfigService } from '../config/telephony-config.service';

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

    constructor(private telephony: TelephonyConfigService) {}

    private get sipId(): string {
        return this.telephony.getConfig().ozonetel.sipId || '523590';
    }
    private get callerId(): string {
        return this.telephony.getConfig().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>`;
    }
}