<?php
/**
 * Activation, deactivation and upgrades.
 *
 * @package ReturnKit
 */

namespace ReturnKit\Core;

use ReturnKit\Store\Log;
use ReturnKit\Store\Requests;

defined( 'ABSPATH' ) || exit;

/**
 * Lifecycle handlers.
 */
class Installer {

	const VERSION_OPTION = 'rtkt_version';
	const DB_VERSION     = '2';
	const DB_OPTION      = 'rtkt_db_version';
	const REDIRECT_KEY   = 'rtkt_activation_redirect';

	/**
	 * Activation: tables, defaults, pages.
	 *
	 * @return void
	 */
	public static function activate() {
		if ( false === get_option( Settings::OPTION ) ) {
			add_option( Settings::OPTION, Settings::defaults() );
		}
		self::create_tables();
		self::create_pages();
		update_option( self::VERSION_OPTION, RTKT_VERSION );
		update_option( 'woocommerce_queue_flush_rewrite_rules', 'yes' );
		set_transient( self::REDIRECT_KEY, 1, MINUTE_IN_SECONDS );

		// Without the Freemius SDK, uninstall goes through WordPress directly.
		if ( rtkt_fs() instanceof \ReturnKit\Freemius\Stub ) {
			register_uninstall_hook( RTKT_FILE, array( Uninstaller::class, 'run' ) );
		}
	}

	/**
	 * Deactivation: nothing to stop; data stays until uninstall. The My
	 * Account endpoint disappears with the plugin.
	 *
	 * @return void
	 */
	public static function deactivate() {
		update_option( 'woocommerce_queue_flush_rewrite_rules', 'yes' );
	}

	/**
	 * Upgrade routines (also repairs missing tables after a migration).
	 *
	 * @return void
	 */
	public static function maybe_upgrade() {
		if ( get_option( self::DB_OPTION ) !== self::DB_VERSION ) {
			self::create_tables();
		}
		if ( get_option( self::VERSION_OPTION ) !== RTKT_VERSION ) {
			update_option( self::VERSION_OPTION, RTKT_VERSION );
		}
	}

	/**
	 * Create or update the custom tables.
	 *
	 * @return void
	 */
	public static function create_tables() {
		global $wpdb;
		require_once ABSPATH . 'wp-admin/includes/upgrade.php';
		$collate = $wpdb->get_charset_collate();
		foreach ( Requests::schema( $collate ) as $sql ) {
			dbDelta( $sql );
		}
		dbDelta( Log::schema( $collate ) );
		/**
		 * Create extra tables (Pro: the store-credit ledger).
		 *
		 * @param string $collate Charset/collation clause.
		 */
		do_action( 'rtkt_create_tables', $collate );
		update_option( self::DB_OPTION, self::DB_VERSION );
	}

	/**
	 * Create the portal and withdrawal pages when they don't exist yet.
	 *
	 * @param bool $force Create even when a page is set but missing/trashed.
	 * @return int[] Created page IDs.
	 */
	public static function create_pages( $force = true ) {
		$stored  = get_option( Settings::OPTION, array() );
		$stored  = is_array( $stored ) ? $stored : array();
		$created = array();
		$pages   = array(
			'portal_page'     => array(
				'title'   => _x( 'Returns', 'page title', 'returnkit' ),
				'slug'    => _x( 'returns', 'page slug', 'returnkit' ),
				'content' => '<!-- wp:shortcode -->[returnkit_portal]<!-- /wp:shortcode -->',
			),
			'withdrawal_page' => array(
				'title'   => _x( 'Withdraw from contract', 'page title', 'returnkit' ),
				'slug'    => _x( 'withdraw-from-contract', 'page slug', 'returnkit' ),
				'content' => '<!-- wp:shortcode -->[returnkit_withdrawal]<!-- /wp:shortcode -->',
			),
		);
		foreach ( $pages as $key => $page ) {
			$id = isset( $stored[ $key ] ) ? absint( $stored[ $key ] ) : 0;
			if ( $id && 'publish' === get_post_status( $id ) ) {
				continue;
			}
			if ( $id && ! $force ) {
				continue;
			}
			$id = wp_insert_post(
				array(
					'post_type'      => 'page',
					'post_status'    => 'publish',
					'post_title'     => $page['title'],
					'post_name'      => $page['slug'],
					'post_content'   => $page['content'],
					'comment_status' => 'closed',
				)
			);
			if ( $id && ! is_wp_error( $id ) ) {
				$stored[ $key ] = (int) $id;
				$created[]      = (int) $id;
			}
		}
		if ( $created ) {
			update_option( Settings::OPTION, Settings::sanitize( wp_parse_args( $stored, Settings::defaults() ) ) );
			Settings::flush();
		}
		return $created;
	}
}