<?php
require_once __DIR__ . '/flutter-base.php';

/*
 * Base REST Controller for flutter
 *
 * @since 1.4.0
 *
 * @package PayStack
 */

class FlutterPayStack extends FlutterBaseController {

	/**
	 * Endpoint namespace
	 *
	 * @var string
	 */
	protected $namespace = 'maan-paystack';

	/**
	 * Register all routes releated with stores
	 *
	 * @return void
	 */
	public function __construct() {
		add_action( 'rest_api_init', [ $this, 'register_flutter_paystack_routes' ] );
	}

	public function register_flutter_paystack_routes() {
		register_rest_route(
			$this->namespace,
			'/initialize_transaction',
			[
				[
					'methods'             => 'POST',
					'callback'            => [ $this, 'initialize_transaction' ],
					'permission_callback' => function () {
						return parent::checkApiPermission();
					},
				],
			]
		);

		register_rest_route(
			$this->namespace,
			'/verify_paystack_transaction',
			[
				[
					'methods'             => 'POST',
					'callback'            => [ $this, 'verify_paystack_transaction' ],
					'permission_callback' => function () {
						return parent::checkApiPermission();
					},
				],
			]
		);

	}

	public function initialize_transaction( $request ) {
		if ( ! is_plugin_active( 'woo-paystack/woo-paystack.php' ) ) {
			return parent::sendError( 'invalid_plugin', 'You need to install Paystack WooCommerce Payment Gateway plugin to use this api', 404 );
		}
		$json     = file_get_contents( 'php://input' );
		$body     = json_decode( $json, true );
		$order_id = sanitize_text_field( $body['order_id'] );

		$payStack = new WC_Gateway_Paystack();

		$order        = wc_get_order( $order_id );
		$email        = method_exists( $order, 'get_billing_email' ) ? $order->get_billing_email() : $order->billing_email;
		$amount       = $order->get_total() * 100;
		$txnref       = $order_id . '_' . time();
		$currency     = method_exists( $order, 'get_currency' ) ? $order->get_currency() : $order->order_currency;
		$callback_url = WC()->api_request_url( 'WC_Gateway_Paystack' );

		$paystack_params = [
			'amount'       => $amount,
			'email'        => $email,
			'currency'     => $currency,
			'reference'    => $txnref,
			'callback_url' => $callback_url,
		];

		if ( $payStack->split_payment ) {

			$paystack_params['subaccount'] = $payStack->subaccount_code;
			$paystack_params['bearer']     = $payStack->charges_account;

			if ( empty( $payStack->transaction_charges ) ) {
				$paystack_params['transaction_charge'] = '';
			} else {
				$paystack_params['transaction_charge'] = $payStack->transaction_charges * 100;
			}
		}

		$paystack_params['metadata']['custom_fields'] = $payStack->get_custom_fields( $order_id );
		$paystack_params['metadata']['cancel_action'] = wc_get_cart_url();

		update_post_meta( $order_id, '_paystack_txn_ref', $txnref );

		$paystack_url = 'https://api.paystack.co/transaction/initialize/';

		$headers = [
			'Authorization' => 'Bearer ' . $payStack->secret_key,
			'Content-Type'  => 'application/json',
		];

		$args = [
			'headers' => $headers,
			'timeout' => 60,
			'body'    => json_encode( $paystack_params ),
		];

		$request           = wp_remote_post( $paystack_url, $args );
		$paystack_response = json_decode( wp_remote_retrieve_body( $request ) );

		if ( ! is_wp_error( $request ) && 200 === wp_remote_retrieve_response_code( $request ) ) {
			return $paystack_response->data;
		} else {
			return parent::sendError( 'invalid_data', $paystack_response->message, 400 );
		}
	}

	public function verify_paystack_transaction( $request ) {
		if ( ! is_plugin_active( 'woo-paystack/woo-paystack.php' ) ) {
			return parent::sendError( 'invalid_plugin', 'You need to install Paystack WooCommerce Payment Gateway plugin to use this api', 404 );
		}
		$json                  = file_get_contents( 'php://input' );
		$body                  = json_decode( $json, true );
		$_REQUEST['reference'] = sanitize_text_field( $body['reference'] );

		if ( defined( 'WC_ABSPATH' ) ) {
			// WC 3.6+ - Cart and other frontend functions are not included for REST requests.
			include_once WC_ABSPATH . 'includes/wc-cart-functions.php';
			include_once WC_ABSPATH . 'includes/wc-notice-functions.php';
			include_once WC_ABSPATH . 'includes/wc-template-hooks.php';
		}
		if ( null === WC()->session ) {
			$session_class = apply_filters( 'woocommerce_session_handler', 'WC_Session_Handler' );

			WC()->session = new $session_class();
			WC()->session->init();
		}
		if ( null === WC()->cart ) {
			WC()->cart = new WC_Cart();
		}

		$payStack = new WC_Gateway_Paystack();
		return $payStack->verify_paystack_transaction();
	}
}

new FlutterPayStack();