<?php
/* 
 * SOFTWARE LICENSE INFORMATION
 * 
 * Copyright (c) 2017 Buttonizer, all rights reserved.
 * 
 * This file is part of Buttonizer
 * 
 * For detailed information regarding to the licensing of
 * this software, please review the license.txt or visit:
 * https://buttonizer.pro/license/
 */
namespace Buttonizer\Utils;

# No script kiddies
defined( 'ABSPATH' ) or die('No script kiddies please!');

class Maintain {
    private static $cachedSettings = null;
    private static $cachedPermission = null;

    // Construct
    public function __construct($ready = false) {
        if(!$ready) return;

        register_activation_hook('buttonizer', array(&$this, 'pluginActivate'));
        register_deactivation_hook('buttonizer', array(&$this, 'pluginDeactivate'));

        add_action('upgrader_process_complete', array(&$this, 'pluginUpdated'), 10, 2);

        add_action( 'admin_bar_menu', array(&$this, 'wordpress_admin_bar'), 100);
    }

    /**
    * Activate Buttonizer, AWESOMAAH!
    */
    public function pluginActivate() {
        // Check updated data
        $this->pluginUpdated();
    }

    /**
    * Deactivate plugin, SEE YOU SOON!
    */
    public function pluginDeactivate(){
        // Nothing to handle right now. Maybe later
    }

    /**
     * Load settings
     */
    public static function getSettings() {
        if(!self::$cachedSettings) {
            register_setting("buttonizer", "buttonizer_settings");
            self::$cachedSettings = get_option('buttonizer_settings');
        }

        return self::$cachedSettings;
    }

    /**
     * Get setting
     */
    public static function getSetting($key, $default = false) {
        if(!self::$cachedSettings) {
            self::getSettings();
        }
        
        return (isset(self::$cachedSettings[$key]) && !empty(self::$cachedSettings[$key]) ? self::$cachedSettings[$key] : $default);
    }

    /**
     * Updated?
     */
    public function pluginUpdated()
    {
        self::getSettings();

        if(!isset(self::$cachedSettings['migration_version']))
        {
            (new Update())->run();
        }
        else if (self::$cachedSettings['migration_version'] !== BUTTONIZER_LAST_MIGRATION) {
            (new Update())->selfMigrate(self::$cachedSettings['migration_version']);
        }
    }

    /**
     * Does the user have access to Buttonizer?
     */
    public static function hasPermission($adminOnly = false) {
        // Use previous cached permission
        if(self::$cachedPermission !== null) {
            return self::$cachedPermission;
        }

        // Load settings if not done before
        if(self::$cachedSettings === null) {
            self::getSettings();
        }

        // By default, do not grant any permission
        $grant = false;

        // Always grand admins
        if(is_user_logged_in() && current_user_can('administrator')) {
            $grant = true;
        }
        // Check for additional permissions
        else if(!$adminOnly && is_user_logged_in() && isset(self::$cachedSettings['additional_permissions'])) {
            // Loop through additional permissions
            foreach(self::$cachedSettings['additional_permissions'] as $permission) {
                if($grant) continue;

                $grant = current_user_can($permission);
            }
        }

        self::$cachedPermission = $grant;
        return $grant;
    }

    /**
     * Add Buttonizer to the admin bar
     * @param $admin_bar
     */
    public function wordpress_admin_bar($admin_bar)
    {
        self::getSettings();
        
        // Only show to admins and when enabled
        if(self::hasPermission()) {
            if(!isset(self::$cachedSettings['admin_top_bar_show_button']) || (isset(self::$cachedSettings['admin_top_bar_show_button']) && filter_var(self::$cachedSettings['admin_top_bar_show_button'], FILTER_VALIDATE_BOOLEAN, ['options' => ['default' => false]]) === true)) {
                $admin_bar->add_menu(array(
                    'id' => 'buttonizer',
                    'title' => '<img src="' . plugins_url('/assets/images/wp-icon.png', BUTTONIZER_PLUGIN_DIR) . '" style="vertical-align: text-bottom; opacity: 0.7; display: inline-block;" />',
                    'href' => admin_url() . 'admin.php?page=Buttonizer', // (!is_admin() ? '#' . urlencode($_SERVER["REQUEST_URI"]) : '')
                    'meta' => [],
                ));

                // Buttonizer buttons
                $admin_bar->add_menu(array(
                    'id' => 'buttonizer_buttons',
                    'parent' => 'buttonizer',
                    'title' => __('Manage buttons', 'buttonizer-multifunctional-button'),
                    'href' => admin_url() . 'admin.php?page=Buttonizer', // (!is_admin() ? '#' . urlencode($_SERVER["REQUEST_URI"]) : '')
                    'meta' => array(),
                ));

                // Settings
                $admin_bar->add_menu(array(
                    'id' => 'buttonizer_settings',
                    'parent' => 'buttonizer',
                    'title' => __('Settings', 'buttonizer-multifunctional-button'),
                    'href' => admin_url() . 'admin.php?page=Buttonizer#/settings/preferences',
                    'meta' => array(),
                ));

                // Settings
                $admin_bar->add_menu(array(
                    'id' => 'buttonizer_knowledgebase',
                    'parent' => 'buttonizer',
                    'title' => __('Knowledge base', 'buttonizer-multifunctional-button'),
                    'href' => "https://community.buttonizer.pro/knowledgebase",
                    'meta' => [
                        "target" => "_blank",
                        "title" => __('Find out everything you need to know about Buttonizer', 'buttonizer-multifunctional-button')
                    ],
                ));
            }
        }
    }

    /**
     * Get WordPress timezone
     */
    public static function getTimezone()
    {
        $timezone_string = get_option( 'timezone_string' );

        if (!empty( $timezone_string ) ) {
            return $timezone_string;
        }

        $offset  = get_option( 'gmt_offset' );
        $hours   = (int) $offset;
        $minutes = ( $offset - floor( $offset ) ) * 60;
        $offset  = sprintf( '%+03d:%02d', $hours, $minutes );

        return $offset;
    }
}