<?php
// If this file is called directly, abort.
if (!defined('WPINC')) {
    die('Damn it.! Dude you are looking for what?');
}

/**
 * The dashboard-specific functionality of the plugin.
 *
 * Defines the plugin name, version, and enqueue the dashboard-specific stylesheet, JavaScript
 * and all other admin side functions.
 *
 * @link       http://iscode.co/products/404-to-301/
 * @since      2.0.0
 * @package    I4T3
 * @subpackage I4T3/admin
 * @author     Joel James <me@joelsays.com>
 */
class _404_To_301_Admin {

    /**
     * The ID of this plugin.
     *
     * @since    2.0.0
     * @access   private
     * @var      string    $plugin_name    The ID of this plugin.
     */
    private $plugin_name;

    /**
     * The version of this plugin.
     *
     * @since    2.0.0
     * @access   private
     * @var      string    $version    The current version of this plugin.
     */
    private $version;

    /**
     * The table name of this plugin.
     *
     * @since    2.0.0
     * @access   private
     * @var      string    $table    The table name of this plugin in db.
     */
    private $table;

    /**
     * The options from db.
     *
     * @since    2.0.0
     * @access   private
     * @var      string    $gnrl_options    Get the options saved in db.
     */
    private $gnrl_options;

    /**
     * The options from db.
     *
     * @since    2.1.0
     * @access   private
     * @var      mixed    $list_table  Class object for listing table.
     */
    private $list_table;

    /**
     * Initialize the class and set its properties.
     *
     * @since    2.0.0
     * @var      string    $plugin_name       The name of this plugin.
     * @var      string    $version    The version of this plugin.
     * @var      string    $table    The name of the database table of this plugin.
     */
    public function __construct($plugin_name, $version, $table) {

        $this->plugin_name = $plugin_name;
        $this->version = $version;
        $this->table = $table;
        $this->gnrl_options = get_option('i4t3_gnrl_options');
    }

    /**
     * Register the stylesheet for the Dashboard.
     *
     * This function is used to register all the required stylesheets for
     * dashboard. Styles will be registered only for i4t3 pages for performance.
     *
     * @since 	2.0.0
     * @uses 	wp_enqueue_style 	To register style
     */
    public function enqueue_styles() {

        global $pagenow;

        if (( $pagenow == 'admin.php' ) && ( in_array($_GET['page'], array('i4t3-settings', 'i4t3-logs')))) {
            wp_enqueue_style($this->plugin_name, plugin_dir_url(__FILE__) . 'css/min/admin.css', array(), $this->version, 'all');
        }
    }

    /**
     * Register the scripts for the Dashboard.
     *
     * This function is used to register all the required scripts for
     * dashboard. Scripts will be registered only for i4t3 pages for performance.
     *
     * @since 	2.0.0
     * @uses 	wp_enqueue_script 	To register script
     */
    public function enqueue_scripts() {

        global $pagenow;

        if (( $pagenow == 'admin.php' ) && ( in_array($_GET['page'], array('i4t3-settings')))) {
            wp_enqueue_script($this->plugin_name, plugin_dir_url(__FILE__) . 'js/admin.js', array('jquery'), $this->version, false);
        }
    }

    /**
     * Run upgrade functions
     *
     * If 404 to 301 is upgraded, we may need to perform few updations in db
     * 
     * @since	2.0.0
     * @uses	get_option()	To get the activation redirect option from db.
     * @return	void.
     */
    public function i4t3_upgrade_if_new() {

        if (!get_option('i4t3_version_no') || ( get_option('i4t3_version_no') < I4T3_VERSION )) {
            if (class_exists('_404_To_301_Activator')) {
                _404_To_301_Activator::activate();
            }
            update_option('i4t3_version_no', I4T3_VERSION);
        }
    }

    /**
     * Changing email notification recipient
     *
     * Using filter to change email notification recipient address from
     * default admin email.
     * 
     * @since	2.0.7
     * @uses	get_option()	To get the email address option from db.
     * @return	$email 		Email address to be used for notification.
     */
    public function i4t3_change_notify_email($email) {
        if (!empty($this->gnrl_options['email_notify_address'])) {
            $email_option = $this->gnrl_options['email_notify_address'];
            if (is_email($email_option)) {
                $email = $email_option;
            }
        }
        return $email;
    }

    /**
     * Creating admin menus for 404 to 301.
     *
     * @since    2.0.0
     * @author	Joel James
     * @uses 	action hook 	add_submenu_page 	Action hook to add new admin menu sub page.
     */
    public function i4t3_create_404_to_301_menu() {

        // Error log menu
        $hook = add_menu_page(
            __('404 Error Logs', '404-to-301'),
            __('404 Error Logs', '404-to-301'),
            I4T3_ADMIN_PERMISSION,
            'i4t3-logs',
            array($this, 'i4t3_render_list_page'),
            'dashicons-redo',
            90
        );

        add_action("load-$hook", array($this, 'screen_option'));

        // 404 to 301 settings menu
        add_submenu_page(
            'i4t3-logs',
            __('404 to 301 Settings', '404-to-301'),
            __('404 Settings', '404-to-301'),
            I4T3_ADMIN_PERMISSION,
            'i4t3-settings',
            array($this, 'i4t3_admin_page')
        );
        
        do_action('i4t3_admin_page');
    }

    /**
     * To set the screen of the error listing page.
     *
     * @since   2.1.0
     * @author  Joel James.
     */
    public static function set_screen($status, $option, $value) {
        return $value;
    }

    /**
     * To make screen options for 404 to 301 listing.
     *
     * This function is used to show screen options like entries per page,
     * show/hide columns etc.
     *
     * @since   2.1.0
     * @author  Joel James.
     */
    public function screen_option() {

        $option = 'per_page';
        $args = array(
            'label' => __('Error Logs', '404-to-301'),
            'default' => 5,
            'option' => 'logs_per_page'
        );

        add_screen_option($option, $args);

        $this->list_table = new _404_To_301_Logs($this->table);
    }

    /**
     * Output buffer function
     *
     * To avoid header already sent issue
     * @link 	https://tommcfarlin.com/wp_redirect-headers-already-sent/
     * @since 	2.1.4
     */
    public function add_buffer() {

        ob_start();
    }

    /**
     * Creating log table page.
     *
     * @since    2.0.0
     * @author	Joel James
     * @uses 	class	_404_To_301_Logs	To initialize and load the log listing table.
     */
    public function i4t3_render_list_page() {
        ?>
        <div class="wrap">
            <h2><?php _e('404 Error Logs', '404-to-301'); ?></h2>

            <div id="poststuff">
                <div id="post-body" class="metabox-holder">
                    <div id="post-body-content">
                        <div class="meta-box-sortables ui-sortable">
                            <form method="post">
                            <?php
                            $this->list_table->prepare_items();
                            $this->list_table->display();
                            ?>
                            </form>
                        </div>
                    </div>
                </div>
                <br class="clear">
            </div>
        </div>
        <?php
    }

    /**
     * Rename admin menu text to : 404 to 301.
     *
     * @since    2.0.0
     * @author	Joel James
     * @var 		global 		$menu 	menus registered in this site.
     */
    public function i4t3_rename_plugin_menu() {
        global $menu;
        $menu[90][0] = __('404 to 301', '404-to-301'); // Change menu text
    }

    /**
     * Admin options page display.
     *
     * Includes admin page contents to manage i4t3 settings.
     * All html parts will be included in this page.
     *
     * @since    2.0.0
     * @author 	Joel James
     */
    public function i4t3_admin_page() {

        require plugin_dir_path(__FILE__) . 'partials/404-to-301-admin-display.php';
    }

    /**
     * Registering i4t3 options.
     * This function is used to register all settings options to the db using
     * WordPress settings API.
     * If we want to register another setting, we can include that here.
     *
     * @since 	2.0.0
     * @author 	Joel James
     * @action 	hooks 		register_setting       Hook to register i4t3 options in db.
     */
    public function i4t3_options_register() {

        register_setting(
                'i4t3_gnrl_options', 'i4t3_gnrl_options'
        );
    }

    /**
     * Custom footer text for i4t3 pages.
     *
     * Function to alter the default footer text to show i4t3 credits only on i4t3 pages.
     *
     * @since    2.0.0
     * @author	Joel James
     */
    function i4t3_dashboard_footer() {

        global $pagenow;
        if (( $pagenow == 'admin.php' ) && ( in_array($_GET['page'], array('i4t3-settings', 'i4t3-logs')))) {

            _e('Thank you for choosing 404 to 301 to improve your website', '404-to-301');
            echo ' | ';
            _e('Kindly give this plugin a', '404-to-301');
            echo '<a href="https://wordpress.org/support/view/plugin-reviews/404-to-301?filter=5#postform">';
            _e('rating', '404-to-301');
            echo ' &#9733; &#9733;</a>';
        } else {
            return;
        }
    }

    /**
     * Custom Plugin Action Link.
     *
     * Function to add a quick link to i4t3, when being listed on your
     * plugins list view.
     *
     * @since    2.0.0
     * @return	$links		Links to display.
     * @author	Joel James
     */
    public function i4t3_plugin_action_links($links, $file) {
        $plugin_file = basename('404-to-301.php');
        if (basename($file) == $plugin_file) {
            $settings_link = '<a href="admin.php?page=i4t3-settings">' . __('Settings', '404-to-301') . '</a>';
            $settings_link .= ' | <a href="admin.php?page=i4t3-logs">' . __('Logs', '404-to-301') . '</a>';
            array_unshift($links, $settings_link);
        }
        return $links;
    }

    /**
     * Get debug data.
     *
     * Function to output the debug data for the plugin. This will be useful
     * when asking for support. Just copy and paste these data to the email.
     *
     * Please DO NOT translate this part, as this need to be provided for debugging only.
     *
     * @since    2.0.0
     * @var 		array 	$gnrl_options 	Array of plugin settings
     * @var 		array 	$active_plugins  Array of active plugins path
     * @return	$html		Html content to diplay.
     * @author	Joel James
     */
    public function i4t3_get_debug_data() {

        $html = '';
        $gnrl_options = get_option('i4t3_gnrl_options');
        $active_plugins = get_option('active_plugins', array());
        $active_theme = wp_get_theme();

        // Dump the plugin settings data
        if (!empty($gnrl_options)) {
            $html .= '<h4>' . __('Settings Data', '404-to-301') . '</h4><p><pre>';
            foreach ($gnrl_options as $key => $option) {
                $html .= $key . ' : ' . $option . '<br/>';
            }
            $html .= '</pre></p><hr/>';
        }
        // Output basic info about the site
        $html .= '<h4>' . __('Basic Details', '404-to-301') . '</h4><p>
		' . __('WordPress Version', '404-to-301') . ' : ' . get_bloginfo('version') . '<br/>
		' . __('PHP Version', '404-to-301') . ' : ' . PHP_VERSION . '<br/>
                ' . __('Plugin Version', '404-to-301') . ' : ' . $this->version . '<br/>
		' . __('Home Page', '404-to-301') . ' : ' . home_url() . '<br/></p><hr/>';

        if ($active_theme->exists()) {

            $html .= '<h4>' . __('Active Theme Details', '404-to-301') . '</h4><p>
		' . __('Name', '404-to-301') . ' : ' . $active_theme->get('Name') . '<br/>
		' . __('Version', '404-to-301') . ' : ' . $active_theme->get('Version') . '<br/>
		' . __('Theme URI', '404-to-301') . ' : ' . $active_theme->get('ThemeURI') . '<br/></p><hr/>';
        }

        // Dump the active plugins data
        if (!empty($active_plugins)) {
            $html .= '<h4>' . __('Active Plugins', '404-to-301') . '</h4><p>';
            foreach ($active_plugins as $plugin) {
                $html .= $plugin . '<br/>';
            }
            $html .= '</p>';
        }

        return $html;
    }

}