<?php

namespace MPHB;

use MPHB\Utils\ParseUtils;
use MPHB\Utils\ArrayUtils;

class Upgrader {

	const OPTION_DB_VERSION         = 'mphb_db_version';
	const OPTION_DB_VERSION_HISTORY = 'mphb_db_version_history';

	private $isNeedUpgrade = false;

	/**
	 *
	 * @var Upgrades\BackgroundBookingUpgrader_2_0_0
	 */
	private $bgBookingUpgrader2_0_0;

	/**
	 *
	 * @var Upgrades\BackgroundBookingUpgrader_2_2_0
	 */
	private $bgBookingUpgrader2_2_0;

	/**
	 *
	 * @var Upgrades\BackgroundBookingUpgrader_2_3_0
	 */
	private $bgBookingUpgrader2_3_0;

	/**
	 *
	 * @var Upgrades\BackgroundBookingUpgrader_4_2_0
	 */
	private $bgBookingUpgrader4_2_0;

	/**
	 *
	 * @var Upgrades\BackgroundUpgrader
	 */
	private $bgUpgrader;

	/**
	 *
	 * @var array
	 */
	private $upgrades = array(
		'1.1.0' => array(
			'fixForV1_1_0',
		),
		'2.0.0' => array(
			'fixForV2_0_0',
		),
		'2.2.0' => array(
			'fixForV2_2_0',
			'fixSessionOptions',
		),
		'2.3.0' => array(
			'fixForV2_3_0',
			'fixGlobalRule',
			'fixCleanOldRules',
		),
		'2.4.2' => array(
			'flushRewriteRules',
		),
		'3.0.0' => array(
			'fixForV3_0_0',
		),
		'3.0.2' => array(
			'fixForV3_0_2',
		),
		'3.2.0' => array(
			'fixForV3_2_0',
		),
		'3.4.0' => array(
			'stopSynchronization',
			'markImported',
			'improveStats',
			'moveSyncUrls',
		),
		'3.5.0' => array(
			'createUploadsDir',
		),
		'3.6.0' => array(
			'removeOutdatedStripeOptions',
		),
		'3.6.1' => array(
			'startAutodeleteOfSyncLogs',
		),
		'3.7.0' => array(
			'hideUpgradeNotice',
		),
		'3.9.9' => array(
			'addBookingCancellationPage',
		),
		'4.0.0' => array(
			'addIndexesToSyncTablesSince_4_0_0',
		),
		'4.1.0' => array(
			'createTableApiKeys',
		),
		'4.2.0' => array(
			'createTableCustomers',
			'addMyAccountPage',
			'fixForV4_2_0',
			'flushRewriteRules',
		),
		'4.2.2' => array(
			'stopSynchronization', // Stop active sync to reset the queue with the next start
			'alterTableSyncLogs',  // Remove "log_context" and change "log_message"
		),
		'4.4.0' => array(
			'fixForV4_4_0',
		),
		'4.5.0' => array(
			'fixForV4_5_0',
		),
		'5.0.0' => array(
			'convertCouponFieldsForV5_0_0',
			'convertSeasonPricesForV5_0_0',
			'sortCustomRulesForV5_0_0',
			'checkLicenseStatusForV5_0_0',
		),
		'5.0.2' => array(
			'fixOldSeasonPricesForV5_0_2',
		),
		'5.2.0' => array(
			'fixForV5_2_0',
		),
	);

	public function __construct() {

		$this->bgBookingUpgrader2_0_0 = new Upgrades\BackgroundBookingUpgrader_2_0_0();
		$this->bgBookingUpgrader2_2_0 = new Upgrades\BackgroundBookingUpgrader_2_2_0();
		$this->bgBookingUpgrader2_3_0 = new Upgrades\BackgroundBookingUpgrader_2_3_0();
		$this->bgBookingUpgrader4_2_0 = new Upgrades\BackgroundBookingUpgrader_4_2_0();
		$this->bgUpgrader             = new Upgrades\BackgroundUpgrader();

		$this->checkVersion();

		add_action( 'init', array( $this, 'upgrade' ) );
		add_action( 'admin_init', array( $this, 'showUpgradeNotice' ) );
		add_action( 'mphb_import_end', array( $this, 'upgradeAfterImport' ) );
	}

	public function checkVersion() {
		$dbVersion = $this->bgUpgrader->isInProgress() ? $this->getScheduledVersion() : $this->getCurrentDBVersion( true );

		if ( is_null( $dbVersion ) ) {
			$this->updateDBVersion();

		} elseif ( version_compare( MPHB()->getVersion(), $dbVersion, '>' ) ) {
			$this->isNeedUpgrade = true;

			if ( version_compare( '2.0.0', $this->getCurrentDBVersion(), '>' ) ) {
				$this->blockNewBookings();
			}
		}
	}

	private function blockNewBookings() {
		add_filter( 'mphb_block_booking', '__return_true' );
	}

	public function upgrade() {

		if ( ! $this->isNeedUpgrade ) {
			return;
		}

		ignore_user_abort( true );
		mphb_set_time_limit( 0 );

		$newBatchesCount = 0;
		foreach ( $this->upgrades as $upgradeVersion => $callbacks ) {
			if ( version_compare( $this->getScheduledVersion(), $upgradeVersion, '<' ) ) {
				$this->bgUpgrader->data( $callbacks )->save()->data( array() );
				$newBatchesCount += count( $callbacks );
				$this->setScheduledVersion( $upgradeVersion );
			}
		}

		$this->bgUpgrader->push_to_queue( 'complete' )->save();
		$this->setScheduledVersion( MPHB()->getVersion() );
		$newBatchesCount++;

		$this->setTotalQueueSize( $this->getTotalQueueSize() + $newBatchesCount );

		$this->bgUpgrader->dispatch();

		return;
	}

	/**
	 * @see \MPHB\ActionsHandler::forceUpgrade()
	 *
	 * @since 3.7.0
	 */
	public function forceUpgrade() {
		do_action( $this->bgUpgrader->getIdentifier() . '_cron' );
		do_action( $this->bgBookingUpgrader2_0_0->getIdentifier() . '_cron' );
		do_action( $this->bgBookingUpgrader2_2_0->getIdentifier() . '_cron' );
		do_action( $this->bgBookingUpgrader2_3_0->getIdentifier() . '_cron' );
		do_action( $this->bgBookingUpgrader4_2_0->getIdentifier() . '_cron' );

		if ( ! $this->bgUpgrader->isInProgress() ) {
			MPHB()->notices()->hideNotice( 'force_upgrade' );
		}

		wp_safe_redirect( admin_url() );
		exit;
	}

	/**
	 * @return int
	 *
	 * @since 3.7.0
	 */
	public function getProgress() {
		if ( ! $this->bgUpgrader->isInProgress() ) {
			return 100;
		}

		$totalItemsCount     = max( $this->getTotalQueueSize(), $this->getQueueSize() );
		$completedItemsCount = $totalItemsCount - $this->getQueueSize();

		// Fix bug when extra batches lead to negative procent (is there still a such bug?)
		$completedItemsCount = max( 0, $completedItemsCount );

		// Calc progress
		if ( $totalItemsCount != 0 ) {
			$progress = round( ( $completedItemsCount / $totalItemsCount ) * 100 );
			return min( $progress, 100 );
		} else {
			return 100;
		}
	}

	public function showUpgradeNotice() {
		if ( $this->bgUpgrader->isInProgress() ) {
			MPHB()->notices()->showNotice( 'force_upgrade' );
		}
	}

	/**
	 * fix for 1.1.0
	 * - Change abandon cron name
	 * - Change option name for Cancellation Page
	 */
	public function fixForV1_1_0() {

		$deprecatedAction = 'mphb_abandon_bookings';
		if ( wp_next_scheduled( $deprecatedAction ) ) {
			wp_clear_scheduled_hook( $deprecatedAction );
			MPHB()->cronManager()->getCron( 'abandon_booking_pending_user' )->schedule();
		}

		$this->changeOptionName( 'mphb_user_cancel_redirect', 'mphb_user_cancel_redirect_page' );

		$this->updateDBVersion( '1.1.0' );

		return false;
	}

	/**
	 * fix for 2.0.0
	 * - update bookings structure in db ( create reserved rooms )
	 *
	 * @return string|boolean False when update completed, function name otherwise.
	 */
	public function fixForV2_0_0() {

		if ( $this->bgBookingUpgrader2_0_0->isInProgress() ) {
			$this->bgUpgrader->pause();
			return __FUNCTION__;
		}

		$oldBookingsAtts = array(
			'posts_per_page'      => -1,
			'post_type'           => 'mphb_booking',
			'suppress_filters'    => false,
			'ignore_sticky_posts' => true,
			'fields'              => 'ids',
			'post_status'         => 'any',
			'meta_query'          => array(
				array(
					'key'     => 'mphb_room_id',
					'compare' => 'EXISTS',
				),
			),
			'orderby'             => 'ID',
			'order'               => 'ASC',
		);

		$oldBookingsIds = get_posts( $oldBookingsAtts );

		if ( empty( $oldBookingsIds ) ) {
			// upgrade 2.0.0 completed
			return false;
		}

		$oldBookingsChunked = array_chunk( $oldBookingsIds, Upgrades\BackgroundBookingUpgrader_2_0_0::BATCH_SIZE );

		foreach ( $oldBookingsChunked as $bookings ) {
			$this->bgBookingUpgrader2_0_0->data( $bookings )->save();
		}

		$this->setTotalQueueSize( $this->getTotalQueueSize() + count( $oldBookingsChunked ) );

		$this->bgUpgrader->waitAction( $this->bgBookingUpgrader2_0_0->getIdentifier() . '_complete' );

		$this->bgBookingUpgrader2_0_0->dispatch();

		$this->bgUpgrader->pause();

		return __FUNCTION__;
	}

	/**
	 * fix for 2.2.0
	 * - generate UID for all  ( create reserved rooms )
	 *
	 * @return string|boolean False when update completed, function name otherwise.
	 */
	public function fixForV2_2_0() {

		if ( $this->bgBookingUpgrader2_2_0->isInProgress() ) {
			$this->bgUpgrader->pause();
			return __FUNCTION__;
		}

		$roomsWithNoUid = get_posts(
			array(
				'posts_per_page'      => -1,
				'post_type'           => 'mphb_reserved_room',
				'suppress_filters'    => false,
				'ignore_sticky_posts' => true,
				'fields'              => 'ids',
				'post_status'         => 'any',
				'meta_query'          => array(
					array(
						'key'     => '_mphb_uid',
						'compare' => 'NOT EXISTS',
					),
				),
				'orderby'             => 'ID',
				'order'               => 'ASC',
			)
		);

		if ( empty( $roomsWithNoUid ) ) {
			// upgrade 2.2.0 completed
			return false;
		}

		$batches = array_chunk( $roomsWithNoUid, Upgrades\BackgroundBookingUpgrader_2_2_0::BATCH_SIZE );

		foreach ( $batches as $batch ) {
			$this->bgBookingUpgrader2_2_0->data( $batch )->save();
		}

		$this->setTotalQueueSize( $this->getTotalQueueSize() + count( $batches ) );

		$this->bgUpgrader->waitAction( $this->bgBookingUpgrader2_2_0->getIdentifier() . '_complete' );

		$this->bgBookingUpgrader2_2_0->dispatch();

		$this->bgUpgrader->pause();

		return __FUNCTION__;
	}

	/**
	 *
	 * @global \WPDB $wpdb
	 */
	public function fixSessionOptions() {
		global $wpdb;

		// Length of prefix _mphb_wp_session_expires_
		$prefixLength = 25;

		$expirationKeys = $wpdb->get_col( "SELECT option_name FROM $wpdb->options WHERE option_name LIKE '_mphb_wp_session_expires_%'" );
		$notIn          = $expirationKeys;
		foreach ( $expirationKeys as $optionName ) {
			$session_id = substr( $optionName, $prefixLength );
			$notIn[]    = "_mphb_wp_session_$session_id";
		}

		$notIn = join( "','", $notIn );

		$wpdb->query( "DELETE FROM $wpdb->options WHERE ( option_name LIKE '_mphb_wp_session_%' ) AND ( option_name NOT IN ('$notIn') )" );

		return false;
	}

	/**
	 * Fix for 2.3.0
	 * - generate reservation rules for global booking rules;
	 * - generate new custom rules (with type ID and room number);
	 * - delete global booking rules and old custom rules.
	 *
	 * @return string|boolean False when update completed, function name otherwise.
	 */
	public function fixForV2_3_0() {
		if ( $this->bgBookingUpgrader2_3_0->isInProgress() ) {
			$this->bgUpgrader->pause();
			return __FUNCTION__;
		}

		$customRules = get_option( 'mphb_custom_booking_rules', array() );

		if ( empty( $customRules ) ) {
			return false;
		}

		$this->bgBookingUpgrader2_3_0->data( $customRules['items'] )->save();

		$this->setTotalQueueSize( $this->getTotalQueueSize() + 1 );

		$this->bgUpgrader->waitAction( $this->bgBookingUpgrader2_3_0->getIdentifier() . '_complete' );

		$this->bgBookingUpgrader2_3_0->dispatch();

		$this->bgUpgrader->pause();

		return false;
	}

	/**
	 *
	 * @since 4.2.0
	 */
	public function fixForV4_2_0() {
		if ( $this->bgBookingUpgrader4_2_0->isInProgress() ) {
			$this->bgUpgrader->pause();
			return __FUNCTION__;
		}

		$atts = array(
			'fields'     => 'ids',
			'status'     => 'confirmed',
			'meta_query' => array(
				array(
					'key'     => '_mphb_sync_id',
					'compare' => 'NOT EXISTS',
				),
			),
			'order'      => 'ASC',
			'orderby'    => 'date',
		);

		$bookings = MPHB()->getBookingPersistence()->getPosts( $atts );

		if ( empty( $bookings ) ) {
			return false;
		}

		$bookingsChunked = array_chunk( $bookings, Upgrades\BackgroundBookingUpgrader_4_2_0::BATCH_SIZE );

		foreach ( $bookingsChunked as $bookingIds ) {
			$this->bgBookingUpgrader4_2_0->data( $bookingIds )->save();
		}

		$this->setTotalQueueSize( $this->getTotalQueueSize() + 1 );

		$this->bgUpgrader->waitAction( $this->bgBookingUpgrader4_2_0->getIdentifier() . '_complete' );

		$this->bgBookingUpgrader4_2_0->dispatch();

		$this->bgUpgrader->pause();

		return false;
	}

	/**
	 * Reverted compatibility with MySQL 5.5
	 * for mphb_customers table
	 *
	 * @return void
	 */
	public function fixForV4_4_0() {
		global $wpdb;

		$table_name = $wpdb->prefix . 'mphb_customers';
		$query      = $wpdb->prepare( 'SHOW TABLES LIKE %s', $wpdb->esc_like( $table_name ) );

		if ( $wpdb->get_var( $query ) === $table_name ) {
			return;
		}

		$this->createTableCustomers();
		$this->fixForV4_2_0();
	}

	public function fixGlobalRule() {
		$globalRules = array(
			'check_in_days'   => get_option( 'mphb_global_check_in_days', array_keys( \MPHB\Utils\DateUtils::getDaysList() ) ),
			'check_out_days'  => get_option( 'mphb_global_check_out_days', array_keys( \MPHB\Utils\DateUtils::getDaysList() ) ),
			'min_stay_length' => (int) get_option( 'mphb_global_min_days', 1 ),
			'max_stay_length' => (int) get_option( 'mphb_global_max_days', 15 ),
		);

		// Save parts of reservation rules
		foreach ( $globalRules as $option => $value ) {
			// No need to save default values for "min_stay_length",
			// "check_in_days" and "check_out_days"
			if ( $option == 'min_stay_length' ) {
				if ( $value == 1 ) {
					continue;
				}
			} elseif ( $option == 'check_in_days' || $option == 'check_out_days' ) {
				if ( count( $value ) == 7 ) {
					continue;
				}
			}

			$value = array(
				array(
					$option         => $value,
					'room_type_ids' => array( 0 ),
					'season_ids'    => array( 0 ),
				),
			);

			update_option( 'mphb_' . $option, $value, 'no' );

		}

		return false;
	}

	public function fixCleanOldRules() {
		delete_option( 'mphb_global_min_days' );
		delete_option( 'mphb_global_max_days' );
		delete_option( 'mphb_global_check_in_days' );
		delete_option( 'mphb_global_check_out_days' );
		delete_option( 'mphb_custom_booking_rules' );

		return false;
	}

	public function flushRewriteRules() {
		flush_rewrite_rules();

		return false;
	}

	/**
	 * Delete unused rules options
	 */
	public function fixForV3_0_0() {
		delete_option( 'mphb_booking_rules_reservation' );
		delete_option( 'mphb_booking_rules_seasons' );
		delete_option( 'mphb_booking_rules_season_priorities' );

		return false;
	}

	/**
	 * 1) Create new tables.
	 * 2) Remove outdated sync options.
	 * 3) Move value from "From Email" to "Hotel Administrator Email".
	 */
	public function fixForV3_0_2() {
		global $wpdb;

		// 1) Create new tables
		\HotelBookingPlugin::createTables();

		// 2) Remove outdated sync options (but leave old logs, just in case)
		$wpdb->query(
			"DELETE FROM {$wpdb->options}"
			. " WHERE (`option_name` LIKE '%mphb_ical_upload%' OR `option_name` LIKE '%mphb_ical_sync%')"
			. " AND `option_name` != 'mphb_ical_sync_rooms_queue_processed_data'"
		);

		// 3) Move "From Email" to "Hotel Administrator Email"
		$fromEmail = get_option( 'mphb_email_from_email', '' );

		update_option( 'mphb_email_hotel_admin_email', $fromEmail );
		update_option( 'mphb_email_from_email', '' );

		return false;
	}

	/**
	 * Remove outdated sync logs.
	 */
	public function fixForV3_2_0() {
		global $wpdb;

		// Remove outdated sync logs
		$wpdb->query( "DELETE FROM {$wpdb->options} WHERE `option_name` = 'mphb_ical_sync_rooms_queue_processed_data'" );

		return false;
	}

	/**
	 * @since 4.2.2
	 */
	public function stopSynchronization() {
	}

	/**
	 * Mark imported bookings in version 3.4.0.
	 */
	public function markImported() {

		return false;
	}

	/**
	 * Rename all columns from stat_* to import_* and add clean_* columns.
	 */
	public function improveStats() {
		global $wpdb;

		$wpdb->query(
			"ALTER TABLE {$wpdb->prefix}mphb_sync_stats"
			. ' CHANGE COLUMN stat_total import_total INT NOT NULL DEFAULT 0,'
			. ' CHANGE COLUMN stat_succeed import_succeed INT NOT NULL DEFAULT 0,'
			. ' CHANGE COLUMN stat_skipped import_skipped INT NOT NULL DEFAULT 0,'
			. ' CHANGE COLUMN stat_failed import_failed INT NOT NULL DEFAULT 0,'
			. ' ADD clean_total INT NOT NULL DEFAULT 0,'
			. ' ADD clean_done INT NOT NULL DEFAULT 0,'
			. ' ADD clean_skipped INT NOT NULL DEFAULT 0'
		);

		return false;
	}

	public function moveSyncUrls() {
		global $wpdb;

		// Create new table
		$wpdb->query(
			"CREATE TABLE IF NOT EXISTS {$wpdb->prefix}mphb_sync_urls ("
			. ' url_id INT NOT NULL AUTO_INCREMENT,'
			. ' room_id INT NOT NULL,'
			. ' sync_id VARCHAR(32) NOT NULL,'
			. ' calendar_url VARCHAR(250) NOT NULL,'
			. ' PRIMARY KEY (url_id)'
			. ') CHARSET=utf8 AUTO_INCREMENT=1'
		);


		return false;
	}

	/**
	 * @return mixed
	 *
	 * @since 3.5.0
	 */
	public function createUploadsDir() {
		mphb_create_uploads_dir();

		return false;
	}

	/**
	 * @return mixed
	 *
	 * @since 3.6.0
	 */
	public function removeOutdatedStripeOptions() {
		delete_option( 'mphb_payment_gateway_stripe_checkout_image_url' );
		delete_option( 'mphb_payment_gateway_stripe_allow_remember_me' );
		delete_option( 'mphb_payment_gateway_stripe_need_billing_address' );
		delete_option( 'mphb_payment_gateway_stripe_use_bitcoin' );

		return false;
	}

	/**
	 * @return mixed
	 *
	 * @since 3.6.1
	 */
	public function startAutodeleteOfSyncLogs() {

		return false;
	}

	/**
	 * @since 3.7.0
	 */
	public function hideUpgradeNotice() {
		// We need this method to create non-empty batch. But there is no need
		// no hide the notice here - Upgrader will hide it on complete()
		return false;
	}

	/**
	 *
	 * @since 3.9.9
	 */
	public function addBookingCancellationPage() {
		global $user_ID;

		$bookingConfirmCancellationPage = MPHB()->settings()->pages()->getBookingConfirmCancellationPage();

		if ( empty( $bookingConfirmCancellationPage ) ) {
			$title   = __( 'Booking Cancellation', 'motopress-hotel-booking' );
			$content = MPHB()->getShortcodes()->getBookingCancellation()->generateShortcode();

			$page = array(
				'post_type'    => 'page',
				'post_author'  => $user_ID,
				'post_status'  => 'publish',
				'post_content' => $content,
				'post_title'   => $title,
			);

			$pageid = wp_insert_post( $page );
			if ( ! is_wp_error( $pageid ) ) {
				MPHB()->settings()->pages()->setBookingConfirmCancellationPage( $pageid );
			}
		}

		return false;
	}

	public function addIndexesToSyncTablesSince_4_0_0() {
		// check is this is a full version of the plugin
		if ( ! class_exists( '\MPHB\iCal\Stats' ) ) {
			return false;
		}

		global $wpdb;

		$statTable = $wpdb->prefix . \MPHB\iCal\Stats::TABLE_NAME;

		if ( empty( $wpdb->get_results( "SHOW INDEX FROM $statTable WHERE Key_name='queue_id'" ) ) ) {

			$wpdb->query( "CREATE UNIQUE INDEX queue_id ON $statTable (queue_id)" );
		}

		$logsTable = $wpdb->prefix . \MPHB\iCal\Logger::TABLE_NAME;

		if ( empty( $wpdb->get_results( "SHOW INDEX FROM $logsTable WHERE Key_name='queue_id'" ) ) ) {

			$wpdb->query( "CREATE INDEX queue_id ON $logsTable (queue_id)" );
		}

		return false;
	}

	public function createTableApiKeys() {
		global $wpdb;

		$wpdb->query(
			"CREATE TABLE IF NOT EXISTS {$wpdb->prefix}mphb_api_keys ("
				   . ' key_id BIGINT UNSIGNED NOT NULL auto_increment,'
				   . ' user_id BIGINT UNSIGNED NOT NULL,'
				   . ' description varchar(200) NULL,'
				   . ' permissions varchar(10) NOT NULL,'
				   . ' consumer_key char(64) NOT NULL,'
				   . ' consumer_secret char(43) NOT NULL,'
				   . ' nonces longtext NULL,'
				   . ' truncated_key char(7) NOT NULL,'
				   . ' last_access datetime NULL default null,'
				   . ' PRIMARY KEY  (key_id),'
				   . ' KEY consumer_key (consumer_key),'
				   . ' KEY consumer_secret (consumer_secret)'
				   . ') CHARSET=utf8 AUTO_INCREMENT=1'
		);

		return false;
	}

	/**
	 *
	 * @since 4.2.0
	 */
	public function createTableCustomers() {
		global $wpdb;

		$customers = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}mphb_customers ("
			. ' customer_id INT NOT NULL AUTO_INCREMENT,'
			. ' user_id INT NULL UNIQUE,'
			. ' email VARCHAR(60) NOT NULL UNIQUE,'
			. ' first_name VARCHAR(60) NOT NULL,'
			. ' last_name VARCHAR(60) NOT NULL,'
			. ' phone VARCHAR(20) NOT NULL,'
			. ' country VARCHAR(2) NOT NULL,'
			. ' state VARCHAR(20) NOT NULL,'
			. ' city VARCHAR(20) NOT NULL,'
			. ' address1 text NOT NULL,'
			. ' zip VARCHAR(10) NOT NULL,'
			. ' bookings INT NOT NULL,'
			. " date_registered DATETIME NOT NULL default '0000-00-00 00:00:00',"
			. ' last_active DATETIME NULL,'
			. ' KEY customer_id (customer_id)'
			. ') CHARSET=utf8 AUTO_INCREMENT=1';

			$customersMeta = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}mphb_customers_meta ("
			. ' meta_id INT NOT NULL AUTO_INCREMENT,'
			. ' customer_id INT NULL,'
			. ' meta_key varchar(255) NULL,'
			. ' meta_value longtext NULL,'
			. ' KEY meta_id (meta_id)'
			. ') CHARSET=utf8 AUTO_INCREMENT=1';

		$wpdb->query( $customers );
		$wpdb->query( $customersMeta );

		return false;
	}

	/**
	 *
	 * @since 4.2.0
	 */
	public function addMyAccountPage() {
		global $user_ID;

		$myAccountPage = MPHB()->settings()->pages()->getMyAccountPageId();

		if ( empty( $myAccountPage ) ) {
			$title   = __( 'My Account', 'motopress-hotel-booking' );
			$content = MPHB()->getShortcodes()->getAccount()->generateShortcode();

			$page = array(
				'post_type'    => 'page',
				'post_author'  => $user_ID,
				'post_status'  => 'publish',
				'post_content' => $content,
				'post_title'   => $title,
			);

			$pageid = wp_insert_post( $page );
			if ( ! is_wp_error( $pageid ) ) {
				MPHB()->settings()->pages()->setMyAccountPageId( $pageid );
			}
		}

		return false;
	}

	/**
	 * Removes column "log_context" from wp_mphb_sync_logs and changes the type
	 * of the column "log_message".
	 *
	 * @since 4.2.2
	 *
	 * @return false
	 *
	 * @global \wpdb $wpdb
	 */
	public function alterTableSyncLogs() {
		global $wpdb;

		// MPHB\iCal\Logger::TABLE_NAME - there are no Logger in Lite version
		$wp_mphb_sync_logs = $wpdb->prefix . 'mphb_sync_logs';

		$wpdb->query( "ALTER TABLE {$wp_mphb_sync_logs} DROP COLUMN log_context" );
		$wpdb->query( "ALTER TABLE {$wp_mphb_sync_logs} MODIFY COLUMN log_message VARCHAR(150)" );

		return false;
	}

	/**
	 *
	 * @param string $version
	 */
	public function updateDBVersion( $version = null ) {

		if ( is_null( $version ) ) {
			$version = MPHB()->getVersion();
		}

		update_option( self::OPTION_DB_VERSION, $version );

		if ( version_compare( $this->getCurrentDBVersion(), $version, '!=' ) ) {
			$this->addDBVersionToHistory( $version );
		}

		if ( version_compare( $this->getScheduledVersion(), $version, '<=' ) ) {
			$this->setScheduledVersion( false );
		}
	}

	/**
	 * @return string
	 *
	 * @since 3.5.1 added optional parameter $returnNull.
	 */
	private function getCurrentDBVersion( $returnNull = false ) {
		$defaultVersion = $returnNull ? null : MPHB()->getVersion();
		return get_option( self::OPTION_DB_VERSION, $defaultVersion );
	}

	public function setScheduledVersion( $version = null ) {
		if ( ! empty( $version ) ) {
			update_option( 'mphb_scheduled_version', $version );
		} else {
			delete_option( 'mphb_scheduled_version' );
		}
	}

	/**
	 *
	 * @return string
	 */
	public function getScheduledVersion() {
		return get_option( 'mphb_scheduled_version', $this->getCurrentDBVersion() );
	}

	/**
	 *
	 * @param string $version
	 */
	private function addDBVersionToHistory( $version ) {
		$dbVersionHistory   = get_option( self::OPTION_DB_VERSION_HISTORY, array() );
		$dbVersionHistory[] = $version;
		update_option( self::OPTION_DB_VERSION_HISTORY, $dbVersionHistory );
	}

	/**
	 * TODO add support to false value of option
	 *
	 * @param string $oldName
	 * @param string $name
	 */
	private function changeOptionName( $oldName, $name ) {
		$optionValue = get_option( $oldName );

		if ( false !== $optionValue ) {
			delete_option( $oldName );
			update_option( $name, $optionValue );
		}
	}

	public function resetDBVersion() {
		delete_option( self::OPTION_DB_VERSION );
	}

	public function upgradeAfterImport() {
		$this->resetDBVersion();
	}

	private function getTotalQueueSize() {
		return (int) get_option( 'mphb_upgrade_queue_size', 0 );
	}

	private function setTotalQueueSize( $size ) {
		update_option( 'mphb_upgrade_queue_size', $size );
	}

	private function getQueueSize() {
		return $this->bgUpgrader->getQueueSize() + $this->bgBookingUpgrader2_0_0->getQueueSize();
	}

	public function complete() {
		$this->updateDBVersion( MPHB()->getVersion() );

		// clear total size
		delete_option( 'mphb_upgrade_queue_size' );

		MPHB()->notices()->hideNotice( 'force_upgrade' );
	}

	public function fixForV4_5_0() {

		global $wpdb;

		$tableName = $wpdb->options;

		$wpdb->query( "DELETE FROM $tableName WHERE $tableName.option_name LIKE '_mphb_wp_session%'" );
	}

	/**
	 * @since 5.0.0
	 *
	 * @global \wpdb $wpdb
	 */
	public function convertCouponFieldsForV5_0_0() {
		global $wpdb;

		// [
		//     post_id    => int,
		//     meta_key   => string,
		//     meta_value => string
		// ]
		$couponRecords = $wpdb->get_results(
			"SELECT `postmeta`.`post_id`, `postmeta`.`meta_key`, `postmeta`.`meta_value`"
				. " FROM `{$wpdb->postmeta}` AS `postmeta`"
				. " INNER JOIN `{$wpdb->posts}` AS `posts`"
					// Payments have '_mphb_amount', don't change that amounts
					. " ON `posts`.`ID` = `postmeta`.`post_id` AND `posts`.`post_type` = 'mphb_coupon'"
				. " WHERE `postmeta`.`meta_key` = '_mphb_type' OR `postmeta`.`meta_key` = '_mphb_amount';",
			ARRAY_A
		);

		foreach ( $couponRecords as $couponRecord ) {
			$postId    = (int) $couponRecord['post_id'];
			$metaKey   = $couponRecord['meta_key'];
			$metaValue = $couponRecord['meta_value'];

			if ( $metaKey == '_mphb_type' ) {
				if ( empty( $metaValue ) ) {
					$metaValue = PostTypes\CouponCPT::TYPE_ACCOMMODATION_PERCENTAGE;
				}

				add_post_meta( $postId, '_mphb_room_discount_type', $metaValue, true );

			} else/*if ( $metaKey == '_mphb_amount' )*/ {
				add_post_meta( $postId, '_mphb_room_amount', $metaValue, true );
			}
		}
	}

	/**
	 * @since 5.0.0
	 *
	 * @see mphb_normilize_season_price()
	 *
	 * @global \wpdb $wpdb
	 */
	public function convertSeasonPricesForV5_0_0() {
		global $wpdb;

		$ratesData = $wpdb->get_results(
			"SELECT `prices_meta`.`post_id` AS `rate_id`,"
				. " `room_type_meta`.`meta_value` AS `room_type_id`,"
				. " `prices_meta`.`meta_value` AS `season_prices`"
			. " FROM `{$wpdb->postmeta}` AS `prices_meta`"
			. " LEFT JOIN `{$wpdb->postmeta}` AS `room_type_meta`"
				. " ON `room_type_meta`.`post_id` = `prices_meta`.`post_id`"
					. " AND `room_type_meta`.`meta_key` = 'mphb_room_type_id'"
			. " WHERE `prices_meta`.`meta_key` = 'mphb_season_prices'",
			ARRAY_A
		);

		foreach ( $ratesData as $rateData ) {
			$rateId = ParseUtils::parseId( $rateData['rate_id'] );

			$roomTypeId = ! empty( $rateData['room_type_id'] ) ? ParseUtils::parseId( $rateData['room_type_id'] ) : 0;
			$roomType   = $roomTypeId != 0 ? mphb_rooms_facade()->getRoomTypeById( $roomTypeId ) : null;

			// $seasonPrices = [
			//     0 => [
			//         'season' => season_id (int),
			//         'price'  => [
			//             // Pre-5.0.0 parameters
			//             'periods'            => [1, 7, ...],    // 1 night, 7 nights, etc.
			//             'prices'             => [200, '', ...], // Prices for 1/7/... nights
			//             'enable_variations'  => bool,
			//             'variations'         => [
			//                 0 => [
			//                     'adults'   => int,
			//                     'children' => int,
			//                     'prices'   => [150, '', ...],
			//                 ],
			//                 1 => ...
			//             ],
			//
			//             // Added since 5.0.0
			//             'base_adults'        => int,
			//             'base_children'      => int,
			//             'extra_adult_prices' => [50, '', ...],
			//             'extra_child_prices' => [40, '', ...],
			//         ],
			//     ],
			//     1 => ...
			// ]
			$seasonPrices = wp_unslash( maybe_unserialize( $rateData['season_prices'] ) );

			foreach ( $seasonPrices as &$singleSeasonPrices ) {
				$singleSeasonPrices['price'] = mphb_normilize_season_price( $singleSeasonPrices['price'] );

				if ( ! is_null( $roomType ) ) {
					$singleSeasonPrices['price']['base_adults']   = $roomType->getBaseAdultsCapacity();
					$singleSeasonPrices['price']['base_children'] = $roomType->getBaseChildrenCapacity();
				}
			}

			unset( $singleSeasonPrices );

			update_post_meta( $rateId, 'mphb_season_prices', $seasonPrices );
		}
	}

	/**
	 * @since 5.0.0
	 */
	public function sortCustomRulesForV5_0_0() {
		$customRules = MPHB()->settings()->bookingRules()->getCustomRules();

		if ( ! empty( $customRules ) ) {
			ArrayUtils::usortBy( $customRules, 'date_from', 'DESC' );

			update_option( 'mphb_booking_rules_custom', $customRules );
		}
	}

	/**
	 * @since 5.0.0
	 */
	public function checkLicenseStatusForV5_0_0() {
		// Remove any previous string
		MPHB()->settings()->license()->clearLicenseStatus();
		MPHB()->settings()->license()->checkLicense();

		MPHB()->cronManager()->getCron( 'check_license_status' )->schedule();
	}

	/**
	 * @since 5.0.2
	 *
	 * @global \wpdb $wpdb
	 */
	public function fixOldSeasonPricesForV5_0_2() {
		global $wpdb;

		$ratesData = $wpdb->get_results(
			"SELECT `post_id` AS `rate_id`, `meta_value` AS `season_prices`"
				. " FROM `{$wpdb->postmeta}`"
				. " WHERE `meta_key` = 'mphb_season_prices'",
			ARRAY_A
		);

		foreach ( $ratesData as $rateData ) {
			$rateId = ParseUtils::parseId( $rateData['rate_id'] );

			// $seasonPrices = [
			//     0 => [
			//         ...
			//         'price'  => [
			//             ...
			//             'prices' => [200, '', ...], // Prices for 1/7/... nights
			//         ],
			//     ],
			//     1 => ...
			// ]
			$seasonPrices = maybe_unserialize( $rateData['season_prices'] );

			if ( $seasonPrices === false ) {
				continue;
			}

			$pricesUpdated = false;

			foreach ( $seasonPrices as &$singleSeasonPrices ) {
				if ( is_array( $singleSeasonPrices['price']['prices'][0] ) ) {
					// `'prices' => [ [250] ]` → `'prices' => [ 250 ]`
					$singleSeasonPrices['price']['prices'] = $singleSeasonPrices['price']['prices'][0];

					$pricesUpdated = true;
				}
			}

			unset( $singleSeasonPrices );

			if ( $pricesUpdated ) {
				update_post_meta( $rateId, 'mphb_season_prices', $seasonPrices );
			}
		}
	}

	public function fixForV5_2_0() {

		$encodingOptions = array(
			'mphb_payment_gateway_2checkout_secret_word',
			'mphb_payment_gateway_stripe_public_key',
			'mphb_payment_gateway_stripe_secret_key',
			'mphb_payment_gateway_braintree_public_key',
			'mphb_payment_gateway_braintree_private_key',
			'mphb_payment_gateway_beanstream_api_key',
		);

		foreach ( $encodingOptions as $encodingOption ) {

			$optionValue = get_option( $encodingOption, false );

			if ( ! empty( $optionValue ) ) {

				$optionValue = \MPHB\Core\StringEncryptHelper::encryptString( $optionValue );

				update_option( $encodingOption, $optionValue, true );
			}
		}
	}
}
