<?php
/**
 * Telegram notifications for newly placed WooCommerce orders.
 */

/**
 * ─── Telegram notification on new order ───
 * Two hooks for reliability:
 * 1) woocommerce_order_status_changed — catches status transitions
 * 2) woocommerce_thankyou — fallback when checkout completes
 * Uses order meta flag to avoid duplicate sends.
 */
add_action( 'woocommerce_order_status_changed', 'matreshka_telegram_new_order_notify_on_status', 10, 4 );
add_action( 'woocommerce_thankyou', 'matreshka_telegram_new_order_notify_on_thankyou', 5, 1 );

function matreshka_telegram_new_order_notify_on_status( $order_id, $old_status, $new_status, $order ) {
	matreshka_send_telegram_new_order( $order_id );
}

function matreshka_telegram_new_order_notify_on_thankyou( $order_id ) {
	matreshka_send_telegram_new_order( $order_id );
}

function matreshka_send_telegram_new_order( $order_id ) {
	$order = wc_get_order( $order_id );
	if ( ! $order ) {
		return;
	}

	// Avoid duplicate notifications
	if ( $order->get_meta( '_matreshka_tg_notified' ) === 'yes' ) {
		return;
	}

	$token   = defined( 'MATRESHKA_TG_BOT_TOKEN' ) ? MATRESHKA_TG_BOT_TOKEN : '';
	$chat_id = defined( 'MATRESHKA_TG_CHAT_ID' )   ? MATRESHKA_TG_CHAT_ID   : '';

	if ( ! $token || ! $chat_id ) {
		return;
	}

	$total_raw = $order->get_formatted_order_total();
	$total     = html_entity_decode( wp_strip_all_tags( $total_raw ), ENT_QUOTES, 'UTF-8' );
	$items     = count( $order->get_items() );
	$admin     = admin_url( 'post.php?post=' . $order_id . '&action=edit' );

	$text  = "🧾 <b>Новый заказ #" . $order->get_order_number() . "</b>\n";
	$text .= "----------------\n";
	$text .= "На сайте сделали новый заказ, смотрите все детали в админке.\n";
	$text .= "----------------\n";
	$text .= "Сумма: " . $total . "\n";
	$text .= "Товаров: " . $items . "\n";

	$response = wp_remote_post( "https://api.telegram.org/bot{$token}/sendMessage", [
		'headers'   => [ 'Content-Type' => 'application/json' ],
		'body'      => wp_json_encode( [
			'chat_id'    => $chat_id,
			'text'       => $text,
			'parse_mode' => 'HTML',
		] ),
		'timeout'   => 15,
	] );

	if ( is_wp_error( $response ) ) {
		return;
	}

	$result = json_decode( wp_remote_retrieve_body( $response ), true );
	if ( ! empty( $result['ok'] ) ) {
		// Mark as notified to prevent duplicates
		$order->update_meta_data( '_matreshka_tg_notified', 'yes' );
		$order->save();
	}
}