<?php

namespace Alexr\Voice\Adapters;

/**
 * Generic VoIP adapter for unknown/custom providers.
 *
 * Expects a simple POST payload with:
 *   - caller_phone: the caller's phone number
 *   - destination_phone: the restaurant's phone number
 *   - call_id: (optional) unique call identifier
 *   - event_type: (optional) 'missed' | 'answered' | 'ended'
 *
 * This allows any custom VoIP system to integrate by sending
 * a standardized payload to the webhook URL.
 */
class GenericAdapter implements VoipAdapterInterface
{
	public function canHandle(array $payload): bool
	{
		// Generic adapter accepts anything with caller_phone
		return isset($payload['caller_phone']);
	}

	public function normalize(array $payload): array
	{
		$eventType = sanitize_text_field($payload['event_type'] ?? 'missed');

		return [
			'caller_phone' => sanitize_text_field($payload['caller_phone'] ?? ''),
			'destination_phone' => sanitize_text_field($payload['destination_phone'] ?? ''),
			'call_id' => sanitize_text_field($payload['call_id'] ?? ''),
			'event_type' => $eventType,
			'is_missed' => ($eventType === 'missed' || $eventType === 'no_answer'),
			'raw_payload' => $payload,
		];
	}

	public function getProviderName(): string
	{
		return 'other';
	}

	public function handleVerification(): ?string
	{
		return null;
	}
}