<?php
/**
 * Settings-screen delivery test.
 *
 * @package Rahkar\WP
 */

declare( strict_types = 1 );

namespace Rahkar\WP\Modules\Notifications;

use Rahkar\WP\Admin\Menu;
use Rahkar\WP\Modules\OtpAuth\OtpDispatcher;
use Rahkar\WP\Notifications\DriverRegistry;
use Rahkar\WP\Notifications\Message;
use Rahkar\WP\Notifications\Notifier;
use Rahkar\WP\Notifications\PhoneNumber;
use Rahkar\WP\Plugin;

defined( 'ABSPATH' ) || exit;

/**
 * Sends one real message so the store owner can see the configuration works.
 *
 * Worth its own class because the alternative is discovering a wrong API key at
 * the moment a customer cannot log in. The failure text is passed through
 * verbatim from the provider — a store owner debugging a rejected sender line
 * needs the provider's actual wording, not a sanitised "sending failed".
 *
 * Deliberately synchronous: a test that queues the message and reports success
 * would tell the owner nothing about whether the provider accepted it.
 */
final class TestSender {

	/**
	 * Handle the AJAX request.
	 *
	 * @internal Hooked callback.
	 */
	public function handle(): void {
		if ( ! current_user_can( Menu::CAPABILITY ) ) {
			wp_send_json_error( [ 'message' => __( 'دسترسی ندارید.', 'rahkar-toolkit' ) ], 403 );
		}

		check_ajax_referer( 'rahkar_test_notification' );

		$recipient = isset( $_POST['recipient'] ) ? sanitize_text_field( wp_unslash( $_POST['recipient'] ) ) : '';

		if ( '' === $recipient ) {
			wp_send_json_error( [ 'message' => __( 'شماره موبایل یا نشانی ایمیل را وارد کنید.', 'rahkar-toolkit' ) ] );
		}

		$isEmail = str_contains( $recipient, '@' );

		if ( ! $isEmail ) {
			$phone = PhoneNumber::parse( $recipient );

			if ( null === $phone ) {
				wp_send_json_error( [ 'message' => __( 'شماره موبایل معتبر نیست. نمونه درست: ۰۹۱۲۳۴۵۶۷۸۹', 'rahkar-toolkit' ) ] );
			}

			$recipient = $phone->canonical();
		} elseif ( ! is_email( $recipient ) ) {
			wp_send_json_error( [ 'message' => __( 'نشانی ایمیل معتبر نیست.', 'rahkar-toolkit' ) ] );
		}

		$code = (string) wp_rand( 10000, 99999 );

		// A phone number is tested through the login path itself: the same
		// gateways in the same order, each with the login pattern configured for
		// it. A test that passes then means logins will work — not merely that the
		// account has credit.
		if ( ! $isEmail ) {
			$outcome = Plugin::make( OtpDispatcher::class )->send( $phone, $code );

			if ( $outcome->isDelivered() ) {
				$name = DriverRegistry::choices( DriverRegistry::CHANNEL_SMS )[ $outcome->driverId() ] ?? $outcome->driverId();

				wp_send_json_success(
					[
						'message' => sprintf(
							/* translators: 1: gateway name, 2: sample code */
							__( 'ارسال شد از طریق %1$s. کد نمونه: %2$s', 'rahkar-toolkit' ),
							$name,
							$code
						),
					]
				);
			}

			wp_send_json_error(
				[
					'message' => $outcome->hasNoGateway()
						? __( 'هیچ درگاه پیامکی فعال و تنظیم نشده است. از صفحه «درگاه‌های پیامک» یکی را تنظیم کنید.', 'rahkar-toolkit' )
						: sprintf(
							/* translators: %s: provider message */
							__( 'ارسال نشد: %s', 'rahkar-toolkit' ),
							$outcome->message()
						),
				]
			);
		}

		$message = new Message(
			// Sent as the login event on purpose: it exercises the same pattern
			// code and the same sender line a real login would, so a test that
			// passes means logins will work — not merely that the account has
			// credit.
			'otp.login',
			$recipient,
			sprintf(
				/* translators: 1: site name, 2: test code */
				__( '%1$s — پیام آزمایشی راهکار. کد نمونه: %2$s', 'rahkar-toolkit' ),
				get_bloginfo( 'name' ),
				$code
			),
			[ 'code' => $code ],
			__( 'پیام آزمایشی راهکار', 'rahkar-toolkit' ),
			true
		);

		$result = Plugin::make( Notifier::class )->sendNow( $message );

		if ( $result->ok ) {
			wp_send_json_success(
				[
					'message' => '' !== $result->messageId
						? sprintf(
							/* translators: %s: provider message id */
							__( 'ارسال شد. شناسه پیام نزد سرویس‌دهنده: %s', 'rahkar-toolkit' ),
							$result->messageId
						)
						: __( 'ارسال شد.', 'rahkar-toolkit' ),
				]
			);
		}

		wp_send_json_error(
			[
				'message' => sprintf(
					/* translators: 1: error code, 2: provider message */
					__( 'ارسال نشد (%1$s): %2$s', 'rahkar-toolkit' ),
					$result->errorCode,
					$result->error
				),
			]
		);
	}
}