<?php

namespace DgoraWcas\Admin;

use DgoraWcas\Engines\TNTSearch\Indexer\Readable\Database as ReadableIndex;
use DgoraWcas\Engines\TNTSearch\Indexer\Taxonomy\Database as TaxonomyIndex;
use DgoraWcas\Engines\TNTSearchMySQL\Indexer\Readable\Database as ReadableIndexMySql;
use DgoraWcas\Engines\TNTSearchMySQL\Indexer\Taxonomy\Database as TaxonomyIndexMySql;
use DgoraWcas\Engines\TNTSearchMySQL\Indexer\Searchable\Database as SearchableIndexMySql;

// Exit if accessed directly
if ( ! defined('ABSPATH')) {
    exit;
}

class Install
{

    /**
     * Hook in tabs.
     */
    public static function maybe_install()
    {

        add_action('admin_init', array(__CLASS__, 'check_version'), 5);
    }

    /**
     * Install
     */
    public static function install()
    {

        if ( ! defined('DGWT_WCAS_INSTALLING')) {
            define('DGWT_WCAS_INSTALLING', true);
        }

        self::save_activation_date();

        self::create_options();

        self::backwardCompatibility();

        // Update plugin version
        update_option('dgwt_wcas_version', DGWT_WCAS_VERSION);

    }

    /**
     * Default options
     */
    private static function create_options()
    {

        global $dgwt_wcas_settings;

        $sections = DGWT_WCAS()->settings->settings_fields();

        $settings = array();

        if (is_array($sections) && ! empty($sections)) {
            foreach ($sections as $options) {

                if (is_array($options) && ! empty($options)) {

                    foreach ($options as $option) {

                        if (isset($option['name']) && ! isset($dgwt_wcas_settings[$option['name']])) {

                            $settings[$option['name']] = isset($option['default']) ? $option['default'] : '';
                        }
                    }
                }
            }
        }

        $update_options = array_merge($settings, $dgwt_wcas_settings);

        update_option(DGWT_WCAS_SETTINGS_KEY, $update_options);
    }

    /**
     * Save activation timestamp
     * Used to display notice, asking for a feedback
     *
     * @return null
     */
    private static function save_activation_date()
    {

        $date = get_option('dgwt_wcas_activation_date');

        if (empty($date)) {
            update_option('dgwt_wcas_activation_date', time());
        }

    }

    /**
     * Set options for backward compatibility
     *
     * @return void
     */
    private static function backwardCompatibility()
    {

        $lastVersion = get_option('dgwt_wcas_version');

        // New install? stop it
        if (empty($lastVersion)) {
            return;
        }

        $bcVersion             = get_option('dgwt_wcas_backward_compatibility_version');
        $backwardCompatibility = get_option('dgwt_wcas_backward_compatibility');

        if (DGWT_WCAS_VERSION === $bcVersion) {
            return;
        }

        // If backward compatibility version is not set, last plugin version should be last stable version.
        if (empty($bcVersion)) {
            $lastStableVersion = $lastVersion;
        } else {
            $lastStableVersion = $bcVersion;
        }

        // Current version is larger that 1.1.7? Update options
        if (version_compare($lastStableVersion, '1.1.7', '<=')) {

            if (empty($bcVersion)) {
                update_option('dgwt_wcas_backward_compatibility_version', '1.1.7');
            }

            if (empty($backwardCompatibility)) {
                update_option('dgwt_wcas_backward_compatibility', 'on');
            }
        }

        // For the next backward compatibility
//        if(
//            version_compare($lastStableVersion, 'x.x.x', '<=')
//            && version_compare($lastStableVersion, 'x.x.x', '>')
//            ) {
//        }

    }

    /**
     * Check version
     */
    public static function check_version()
    {
        if ( ! defined('IFRAME_REQUEST')) {
            if (get_option('dgwt_wcas_version') != DGWT_WCAS_VERSION) {
                self::install();
            }
        }
    }

}