<?php
/**
 * Plugin Name: AfriDirect Payment
 * Plugin URI: https://afrirates.com/post/afridirect-payment-plugin
 * Description: Accept manual/offline payments with proof upload for WooCommerce orders and standalone payment forms (services, donations, custom payments).
 * Version: 1.2.2
 * Author: AfriRates
 * Author URI: https://afrirates.com/
 * Text Domain: afridirect-payment
 * Domain Path: /languages
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Requires at least: 5.8
 * Requires PHP: 7.4
 * WC requires at least: 5.0
 * WC tested up to: 10.4.3
 *
 * @package afridirect-payment
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

// Define plugin constants.
define( 'AFRIDIRECT_PAYMENT_VERSION', '1.2.2' );
define( 'AFRIDIRECT_PAYMENT_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'AFRIDIRECT_PAYMENT_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
define( 'AFRIDIRECT_PAYMENT_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );


// Translations are loaded automatically by WordPress.org for hosted plugins
// (since WP 4.6) because the text domain matches the plugin slug — no manual
// load_plugin_textdomain() call needed.

/**
 * Cache-busting version string for a bundled CSS/JS asset.
 *
 * Uses the file's modification time so every edit is picked up by browsers and
 * caching layers; falls back to the plugin version if the file is missing.
 *
 * @param string $relative_path Path relative to the plugin root, e.g. 'admin/js/methods.js'.
 * @return string
 */
function afridirect_payment_asset_ver( $relative_path ) {
	$file  = AFRIDIRECT_PAYMENT_PLUGIN_DIR . ltrim( $relative_path, '/' );
	$mtime = file_exists( $file ) ? filemtime( $file ) : 0;
	return $mtime ? (string) $mtime : AFRIDIRECT_PAYMENT_VERSION;
}

/**
 * Main plugin class.
 */
final class AfriDirect_Payment {

	/**
	 * Plugin instance.
	 *
	 * @var AfriDirect_Payment
	 */
	private static $instance = null;

	/**
	 * Get plugin instance.
	 *
	 * @return AfriDirect_Payment
	 */
	public static function instance() {
		if ( is_null( self::$instance ) ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor.
	 */
	private function __construct() {
		$this->init_hooks();
	}

	/**
	 * Initialize hooks.
	 */
	private function init_hooks() {
		add_action( 'plugins_loaded', array( $this, 'init' ), 10 );
		add_action( 'before_woocommerce_init', array( $this, 'declare_wc_compatibility' ) );
		add_action( 'admin_init', array( $this, 'ensure_pages' ) );
		add_filter( 'cron_schedules', array( $this, 'add_cron_interval' ) );
		register_activation_hook( __FILE__, array( $this, 'activate' ) );
		register_deactivation_hook( __FILE__, array( $this, 'deactivate' ) );
	}

	/**
	 * Declare WooCommerce feature compatibility.
	 *
	 * HPOS (custom order tables) is fully supported. The gateway targets the
	 * classic checkout; it simply does not register with block checkout, and
	 * payment_fields() shows a clear message there, so no incompatibility is
	 * declared for cart/checkout blocks (that only produces an admin notice).
	 */
	public function declare_wc_compatibility() {
		if ( class_exists( '\Automattic\WooCommerce\Utilities\FeaturesUtil' ) ) {
			\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'custom_order_tables', __FILE__, true );
		}
	}

	/**
	 * Initialize plugin.
	 */
	public function init() {
		$this->load_dependencies();
		$this->init_classes();
	}

	/**
	 * Load plugin dependencies.
	 */
	private function load_dependencies() {
		// Core classes (always loaded).
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-afridirect-payment.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-payment-methods.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-menu.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-ui.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-dashboard-data.php';
		
		// Standalone payments (always loaded).
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-payments.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-payments-cpt.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-payments.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-forms-cpt.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-forms-cpt.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-forms-helper.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-shortcodes.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-payment-edit.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-receipts.php';
		
		// WooCommerce-specific classes (only if WC is active).
		if ( class_exists( 'WooCommerce' ) ) {
			require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-payment-gateway.php';
			require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-order-statuses.php';
			require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-dashboard.php';
			require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-receipt-generator.php';
			require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-expiration-handler.php';
			require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-woo-payments.php';
		}
		
		// Shared classes (always loaded).
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-proof-handler.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-email-handler.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-ajax-handler.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-methods.php';

		// Admin UI classes (always loaded).
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-overview.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-actions.php';
		require_once AFRIDIRECT_PAYMENT_PLUGIN_DIR . 'includes/class-admin-settings.php';
	}

	/**
	 * Initialize plugin classes.
	 */
	private function init_classes() {
		// Core classes (always loaded).
		AfriDirect_Payment_Main::instance();
		AfriDirect_Payment_Admin_Menu::instance(); // Must be initialized first.
		AfriDirect_Payment_Admin_UI::instance(); // Shared header, navigation and styles.
		
		// Admin UI classes (must be initialized early for menu ordering).
		AfriDirect_Payment_Admin_Overview::instance(); // Dashboard (first submenu).
		AfriDirect_Payment_Admin_Methods::instance(); // Payment Methods (second submenu).
		AfriDirect_Payment_Forms_CPT::instance();
		AfriDirect_Payment_Admin_Forms_CPT::instance(); // Payment Forms (third submenu).
		AfriDirect_Payment_Admin_Payments::instance(); // Payments (Standalone) (fourth submenu).

		// WooCommerce-specific admin classes (only if WC is active).
		if ( class_exists( 'WooCommerce' ) ) {
			AfriDirect_Payment_Admin_Woo_Payments::instance(); // Payments (WooCommerce) (fifth submenu).
		}

		AfriDirect_Payment_Admin_Settings::instance(); // Settings (sixth submenu, WC only).
		
		// Other admin classes.
		AfriDirect_Payment_Admin_Actions::instance();
		AfriDirect_Payment_Proof_Handler::instance();
		AfriDirect_Payment_Email_Handler::instance();
		AfriDirect_Payment_Ajax_Handler::instance();
		
		// Standalone payments (always loaded).
		AfriDirect_Payments_CPT::instance();
		AfriDirect_Payment_Admin_Payment_Edit::instance();
		AfriDirect_Payment_Shortcodes::instance();
		
		// WooCommerce-specific classes (only if WC is active).
		if ( class_exists( 'WooCommerce' ) ) {
			AfriDirect_Payment_Order_Statuses::instance();
			AfriDirect_Payment_Admin_Dashboard::instance();
			AfriDirect_Payment_Receipt_Generator::instance();
			AfriDirect_Payment_Expiration_Handler::instance();
			
			// Register payment gateway.
			add_filter( 'woocommerce_payment_gateways', array( $this, 'add_payment_gateway' ) );
		}
	}

	/**
	 * Add payment gateway to WooCommerce.
	 *
	 * @param array $gateways Existing gateways.
	 * @return array
	 */
	public function add_payment_gateway( $gateways ) {
		$gateways[] = 'AfriDirect_Payment_Gateway';
		return $gateways;
	}

	/**
	 * Plugin activation.
	 */
	public function activate() {
		// Create upload directory.
		$upload_dir = wp_upload_dir();
		if ( ! $upload_dir['error'] ) {
			$proof_dir = $upload_dir['basedir'] . '/afridirect-payment-proofs';
			if ( ! file_exists( $proof_dir ) ) {
				wp_mkdir_p( $proof_dir );
				// Add .htaccess for security.
				$htaccess_content = 'deny from all';
				@file_put_contents( $proof_dir . '/.htaccess', $htaccess_content );
			}
		}

		// Create required pages.
		$this->ensure_pages();

		// Ensure cron schedule is registered.
		add_filter( 'cron_schedules', array( $this, 'add_cron_interval' ) );
		
		// Schedule WP-Cron event for expiration checking (every 5 minutes).
		if ( ! wp_next_scheduled( 'afridirect_payment_check_expired_orders' ) ) {
			$schedules = wp_get_schedules();
			$interval = isset( $schedules['afridirect_payment_5min'] ) ? 'afridirect_payment_5min' : 'hourly';
			wp_schedule_event( time(), $interval, 'afridirect_payment_check_expired_orders' );
		}

		// Flush rewrite rules.
		flush_rewrite_rules();
	}

	/**
	 * Make sure the front-end pages the plugin redirects to actually exist.
	 *
	 * Idempotent and cheap when the pages are already in place, so it is safe to
	 * call on both activation and admin_init (the latter covers sites that were
	 * already active before this version was installed).
	 */
	public function ensure_pages() {
		$this->ensure_page(
			'afridirect_pending_page_id',
			'[afridirect_payment_pending]',
			'afridirect-payment-pending',
			__( 'Payment Pending', 'afridirect-payment' )
		);

		$this->ensure_page(
			'afridirect_receipt_page_id',
			'[afridirect_payment_receipt]',
			'afridirect-payment-receipt',
			__( 'Payment Receipt', 'afridirect-payment' )
		);
	}

	/**
	 * Ensure a single published page containing the given shortcode exists and its
	 * ID is stored in the given option.
	 *
	 * @param string $option_key Option that stores the resolved page ID.
	 * @param string $shortcode  Shortcode the page must contain, e.g. '[afridirect_payment_pending]'.
	 * @param string $slug       Preferred post_name when a new page is created.
	 * @param string $title      Title used when a new page is created.
	 */
	private function ensure_page( $option_key, $shortcode, $slug, $title ) {
		// Already resolved to a valid page with the shortcode? Nothing to do.
		$page_id = (int) get_option( $option_key, 0 );
		if ( $page_id ) {
			$page = get_post( $page_id );
			if ( $page && 'page' === $page->post_type && 'publish' === $page->post_status && false !== strpos( $page->post_content, $shortcode ) ) {
				return;
			}
		}

		// A page with the preferred slug already exists.
		$existing = get_page_by_path( $slug, OBJECT, 'page' );
		if ( $existing ) {
			if ( false === strpos( $existing->post_content, $shortcode ) ) {
				wp_update_post(
					array(
						'ID'           => $existing->ID,
						'post_content' => trim( $existing->post_content . "\n\n" . $shortcode ),
					)
				);
			}
			update_option( $option_key, $existing->ID );
			return;
		}

		// Some other page already contains the shortcode.
		$found = get_posts(
			array(
				'post_type'      => 'page',
				'post_status'    => 'any',
				'posts_per_page' => 1,
				's'              => $shortcode,
				'fields'         => 'ids',
			)
		);
		if ( ! empty( $found ) ) {
			update_option( $option_key, (int) $found[0] );
			return;
		}

		// Create the page.
		$new_id = wp_insert_post(
			array(
				'post_title'   => $title,
				'post_name'    => $slug,
				'post_content' => $shortcode,
				'post_status'  => 'publish',
				'post_type'    => 'page',
			)
		);
		if ( $new_id && ! is_wp_error( $new_id ) ) {
			update_option( $option_key, (int) $new_id );
		}
	}

	/**
	 * Add custom cron interval (5 minutes).
	 *
	 * @param array $schedules Existing schedules.
	 * @return array
	 */
	public function add_cron_interval( $schedules ) {
		if ( ! isset( $schedules['afridirect_payment_5min'] ) ) {
			$schedules['afridirect_payment_5min'] = array(
				'interval' => 5 * MINUTE_IN_SECONDS,
				'display'  => __( 'Every 5 Minutes', 'afridirect-payment' ),
			);
		}
		return $schedules;
	}

	/**
	 * Plugin deactivation.
	 */
	public function deactivate() {
		// Clear scheduled cron event.
		$timestamp = wp_next_scheduled( 'afridirect_payment_check_expired_orders' );
		if ( $timestamp ) {
			wp_unschedule_event( $timestamp, 'afridirect_payment_check_expired_orders' );
		}

		flush_rewrite_rules();
	}
}

/**
 * Initialize plugin.
 */
function afridirect_payment() {
	return AfriDirect_Payment::instance();
}

// Start the plugin.
afridirect_payment();