<?php

if (!defined('WPINC')) {
    die('Damn it.! Dude you are looking for what?');
}

/**
 * Fired during plugin activation.
 *
 * This class defines all code necessary to run during the plugin's activation.
 *
 * @link		https://thefoxe.com/products/404-to-301/
 * @since		2.0.0
 * @package		I4T3
 * @subpackage	I4T3/includes
 * @author		Joel James <me@joelsays.com>
 */
class _404_To_301_Activator {

    /**
     * Function to run during activation
     * Transfering old options to new - 404 to 301
     *
     * 404 to 301 Coding sturucture and options are changed to new sturcture.
     * So we need to transfer old values to new structure. This file will 
     * be used once. After transferring, we will never use these functions.
     *
     * @since    2.0.0
     * @author 	Joel James
     */
    public static function activate() {

        // Set default values for the plugin
        $i4t3_type = self::transfer('type', 'redirect_type', '301');
        $i4t3_link = self::transfer('link', 'redirect_link', site_url());
        $i4t3_enable = self::transfer('', 'redirect_log', 1);
        $i4t3_to = self::transfer('', 'redirect_to', 'link');
        $i4t3_page = self::transfer('', 'redirect_page', '');
        $i4t3_notify = self::transfer('', 'email_notify', 0);
        $i4t3_notify_email = self::transfer('', 'email_notify_address', get_option('admin_email'));
        $i4t3_exclude = self::transfer('', 'exclude_paths', '');

        // New general settings array to be added
        $i4t3GnrlOptions = array(
            'redirect_type' => $i4t3_type,
            'redirect_link' => $i4t3_link,
            'redirect_log' => $i4t3_enable,
            'redirect_to' => $i4t3_to,
            'redirect_page' => $i4t3_page,
            'email_notify' => $i4t3_notify,
            'email_notify_address' => $i4t3_notify_email,
            'exclude_paths' => $i4t3_exclude
        );

        /**
         * Array of all settings arrays.
         * We are adding this to an array as we need to register
         * multiple settings in future for addons
         */
        $i4t3_options = array(
            'i4t3_gnrl_options' => $i4t3GnrlOptions
        );

        // If not already exist, adding values
        foreach ($i4t3_options as $key => $value) {
            update_option($key, $value);
        }

        // remember, two spaces after PRIMARY KEY otherwise WP borks
        $installed_version = get_option('i4t3_db_version');

        if (!$installed_version || ( I4T3_DB_VERSION != $installed_version )) {

            global $wpdb;
            $table = $wpdb->prefix . "404_to_301";

            $sql = "CREATE TABLE $table (
		id BIGINT NOT NULL AUTO_INCREMENT,
		date DATETIME NOT NULL,
		url VARCHAR(512) NOT NULL,
		ref VARCHAR(512) NOT NULL default '', 
		ip VARCHAR(40) NOT NULL default '',
		ua VARCHAR(512) NOT NULL default '',
		PRIMARY KEY  (id)
            );";

            require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
            dbDelta($sql); // To be safe on db upgrades
            update_option('i4t3_db_version', I4T3_DB_VERSION);
        }
    }

    /**
     * Function to get existing settings
     *
     * This function used to check if the new setting is already available
     * in datatabse, then consider that. Otherwise check for the old one 
     * and if available, takes that.
     * If both the values are not available, then creates new default settings.
     *
     * @since    2.0.0
     * @author 	Joel James
     */
    public static function transfer($old, $new, $fresh) {

        $option = 'i4t3_gnrl_options';

        // let us check if new options already exists
        if (get_option($option)) {
            $i4t3_option = get_option($option);
            // If exists, then take that option value
            $fresh = (!empty($i4t3_option[$new])) ? $i4t3_option[$new] : $fresh;
            // Check if old value is available for the same option
            if (in_array($old, array('type', 'link')) && get_option($old)) {
                // If available delete it, as we are moving to new settings
                delete_option($old);
            }
        }
        // Fine, new options doesn't exist, then let us search for old
        else if (get_option($old)) {
            // Take old value and set it to new
            $fresh = get_option($old);
            // Delete it, as we are moving to new settings
            delete_option($old);
        }

        return $fresh;
    }

}