<?php

defined( 'ABSPATH' ) || exit;

use DeliciousBrains\WPMDB\Common\Util\Util;

/**
 * Populate the $wpe_migrations global with an instance of the WPMDBPro class and return it.
 *
 * @return DeliciousBrains\WPMDB\SiteMigration\WPESiteMigration The one true global instance of the WPMDBPro class.
 */
function wpe_migrations() {
	global $wpe_migrations;

	//Load in front-end code
	require_once __DIR__ . '/react-wp-scripts.php';

	if ( ! is_null( $wpe_migrations ) ) {
		return $wpe_migrations;
	}

	$wpe_migrations = new DeliciousBrains\WPMDB\SiteMigration\WPESiteMigration();
	$wpe_migrations->register();

	return $wpe_migrations;
}

/**
 * once all plugins are loaded, load up the rest of this plugin
 *
 * @return boolean
 */
function wpe_migrations_loaded() {
	if ( ! function_exists( 'wpe_migrations' ) ) {
		return false;
	}

	if ( Util::is_frontend() ) {
		return false;
	}

	// Exit quickly on multisite unless: user can admin, one of our AJAX calls, CLI request or handling cron.
	if (
		is_multisite() &&
		! current_user_can( 'manage_network_options' ) &&
		! Util::wpmdb_is_ajax() &&
		! Util::is_cli() &&
		! Util::is_cron()
	) {
		return false;
	}

	register_deactivation_hook(
		__DIR__ . '/wpe-site-migration.php',
		'wpe_site_migration_deactivate_plugin'
	);
	register_uninstall_hook( __DIR__ . '/wpe-site-migration.php', 'wpe_site_migration_delete_plugin' );

	wpe_migrations();

	return true;
}

add_action( 'plugins_loaded', 'wpe_migrations_loaded' );

/**
 * Checks if another build of WP Migrate is active and deactivates it.
 * Deactivates this pluugin when activating another build of WP Migrate
 * To be hooked on `activated_plugin` so other plugin is deactivated when current plugin is activated.
 *
 * @handles activated_plugin
 *
 * @param string $plugin
 *
 */
function wpe_deactivate_other_instances( $plugin ) {
	$basename        = basename( $plugin );
	$migrate_plugins = [ 'wp-migrate-db-pro.php', 'wp-migrate-db.php', 'wpe-site-migration.php' ];
	if ( ! in_array( $basename, $migrate_plugins ) ) {
		return;
	}

	if ( 'wpe-site-migration.php' === $basename ) {
		$plugins_to_handle     = [ 'wp-migrate-db-pro.php', 'wp-migrate-db.php' ];
		$deactivated_notice_id = WPMDB_DEACTIVATED_FOR_WPESM_ID;
	} else {
		$plugins_to_handle     = [ 'wpe-site-migration.php' ];
		$deactivated_notice_id = WPESM_DEACTIVATED_FOR_WPMDB_ID;
	}

	$active_plugins = wpmdb_get_active_plugins();

	foreach ( $active_plugins as $active_plugin ) {
		foreach ( $plugins_to_handle as $plugin_to_handle ) {
			if ( false !== strpos( $active_plugin, $plugin_to_handle ) ) {
				set_transient( WPMDB_DEACTIVATED_NOTICE_ID_TRANSIENT, $deactivated_notice_id, HOUR_IN_SECONDS );
				deactivate_plugins( $active_plugin );

				return;
			}
		}
	}
}

add_action( 'activated_plugin', 'wpe_deactivate_other_instances' );