<?php
/**
 * Admin Dashboard
 *
 * @copyright 2017-present Creative Themes
 * @license   http://www.gnu.org/copyleft/gpl.html GNU General Public License
 * @package Blocksy
 */

defined( 'ABSPATH' ) || die( "Don't run this file directly!" );

/**
 * Check if current page is dashboard.
 */
function ct_is_dashboard_page() {
	global $pagenow;

	// @codingStandardsIgnoreStart
	$is_ct_settings = 'admin.php' === $pagenow &&
		isset( $_GET['page'] ) && // Input var okay.
		'ct-dashboard' === $_GET['page']; // Input var okay.
	// @codingStandardsIgnoreEnd

	return $is_ct_settings;
}

/**
 * Implement dashboard page
 */
class CT_Dashboard_Page {
	/**
	 * Store templates as a field in object
	 *
	 * @var templates
	 */
	private $templates;

	/**
	 * Dashboard page slug
	 *
	 * @var page_slug
	 */
	private $page_slug = 'ct-dashboard';

	/**
	 * Check if current screen is the dashboard page.
	 */
	public function is_dashboard_page() {
		return ct_is_dashboard_page();
	}

	/**
	 * Init templates
	 */
	public function __construct() {
		add_action(
			'admin_menu',
			[ $this, 'setup_framework_page' ]
		);

		add_action(
			'after_switch_theme',
			[ $this, 'redirect_after_theme_switch' ]
		);

		add_action(
			'wp_ajax_ct_load_system_status',
			[ $this, 'load_system_status' ]
		);

		if ( is_admin() && defined( 'DOING_AJAX' ) && DOING_AJAX ) {
			$plugins_api = new CT_Admin_Dashboard_API_Premium_Plugins();
			$plugins_api->attach_ajax_actions();
		}

		if ( $this->is_dashboard_page() ) {
			add_action(
				'admin_enqueue_scripts',
				[ $this, 'enqueue_static' ]
			);
		}

		if ( $this->is_dashboard_page() ) {
			add_action(
				'admin_print_scripts',
				function () {
					global $wp_filter;

					if ( is_user_admin() ) {
						if ( isset( $wp_filter['user_admin_notices'] ) ) {
							unset( $wp_filter['user_admin_notices'] );
						}
					} elseif ( isset( $wp_filter['admin_notices'] ) ) {
						unset( $wp_filter['admin_notices'] );
					}

					if ( isset( $wp_filter['all_admin_notices'] ) ) {
						unset( $wp_filter['all_admin_notices'] );
					}
				}
			);
		}
	}

	/**
	 * Load system status data
	 */
	public function load_system_status() {
		$system_status = new CT_System_Status();
		wp_send_json_success( $system_status->output() );
	}

	/**
	 * Compute data for jed
	 *
	 * @param string $domain Domain to load translations for.
	 */
	public function get_jed_locale_data( $domain ) {
		$translations = get_translations_for_domain( $domain );

		$locale = [
			'' => [
				'domain' => $domain,
				'lang'   => is_admin() ? get_user_locale() : get_locale(),
			],
		];

		if ( ! empty( $translations->headers['Plural-Forms'] ) ) {
			$locale['']['plural_forms'] = $translations->headers['Plural-Forms'];
		}

		foreach ( $translations->entries as $msgid => $entry ) {
			$locale[ $msgid ] = $entry->translations;
		}

		return $locale;
	}

	/**
	 * Enqueue statics for theme
	 */
	public function enqueue_static() {
		$theme = wp_get_theme();

		if ( ! wp_script_is( 'wp-i18n' ) ) {
			wp_register_script(
				'wp-i18n',
				get_template_directory_uri() . '/admin/dashboard/static/bundle/i18n.js',
				[],
				$theme->get( 'Version' ),
				false
			);
		}

		wp_enqueue_script( 'wp-i18n' );

		$locale_data_ct = $this->get_jed_locale_data( 'ct' );

		wp_add_inline_script(
			'wp-i18n',
			'wp.i18n.setLocaleData( ' . wp_json_encode( $locale_data_ct ) . ', "ct" );'
		);

		$dependencies = [
			'underscore',
			'wp-util',
		];

		wp_enqueue_script(
			'ct-dashboard-scripts',
			get_template_directory_uri() . '/admin/dashboard/static/bundle/main.js',
			$dependencies,
			$theme->get( 'Version' ),
			true
		);

		if ( defined( 'WP_DEBUG' ) ) {
			wp_localize_script(
				'ct-dashboard-scripts',
				'WP_DEBUG',
				[ 'debug' => true ]
			);
		}

		$manager = new CT_Plugin_Manager();
		$plugins_config = $manager->get_config();

		wp_localize_script(
			'ct-dashboard-scripts',
			'ctDashboardLocalizations',
			[
				'ajax_url'      => admin_url( 'admin-ajax.php' ),
				'customizer_url' => admin_url(
				  '/customize.php?autofocus'
				),
				'theme_version' => $theme->get( 'Version' ),
				'theme_name'    => $theme->get( 'Name' ),
				'clean_install_plugins' => $plugins_config,
			]
		);

		wp_enqueue_style(
			'ct-dashboard-styles',
			get_template_directory_uri() . '/admin/dashboard/static/bundle/main.css',
			[],
			$theme->get( 'Version' )
		);
	}

	/**
	 * Add admin menu page
	 */
	public function setup_framework_page() {
		$welcome_page_options = [
			'title'            => __( 'Blocksy', 'ct' ),
			'menu-title'       => __( 'Blocksy', 'ct' ),
			'permision'        => 'activate_plugins',
			'top-level-handle' => $this->page_slug,
			'callback'         => [ $this, 'welcome_page_template' ],
			'icon-url' => get_template_directory_uri() . '/admin/dashboard/static/img/navigation.svg',
			'position'         => 2,
		];

		$this->menu_page(
			$welcome_page_options['title'],
			$welcome_page_options['menu-title'],
			$welcome_page_options['permision'],
			$welcome_page_options['top-level-handle'],
			$welcome_page_options['callback'],
			$welcome_page_options['icon-url'],
			$welcome_page_options['position']
		);

		$this->submenu_page(
			$welcome_page_options['top-level-handle'],
			__( 'Dashboard', 'ct' ),
			__( 'Dashboard', 'ct' ),
			$welcome_page_options['permision'],
			$welcome_page_options['top-level-handle']
		);
	}

	public function menu_page($page_title, $menu_title, $capability, $menu_slug, $function = '', $icon_url = '', $position = null) {

		global $menu, $admin_page_hooks, $_registered_pages, $_parent_pages;

		$menu_slug = plugin_basename( $menu_slug );

		$admin_page_hooks[$menu_slug] = sanitize_title( $menu_title );

		$hookname = get_plugin_page_hookname( $menu_slug, '' );

		if ( !empty( $function ) && !empty( $hookname ) && current_user_can( $capability ) )
			add_action( $hookname, $function );

		if ( empty($icon_url) ) {
			$icon_url = 'dashicons-admin-generic';
			$icon_class = 'menu-icon-generic ';
		} else {
			$icon_url = set_url_scheme( $icon_url );
			$icon_class = '';
		}

		$new_menu = array( $menu_title, $capability, $menu_slug, $page_title, 'menu-top ' . $icon_class . $hookname, $hookname, $icon_url );

		if ( null === $position ) {
			$menu[] = $new_menu;
		} elseif ( isset( $menu[ "$position" ] ) ) {
			$position = $position + substr( base_convert( md5( $menu_slug . $menu_title ), 16, 10 ) , -5 ) * 0.00001;
			$menu[ "$position" ] = $new_menu;
		} else {
			$menu[ $position ] = $new_menu;
		}

		$_registered_pages[$hookname] = true;

		// No parent as top level
		$_parent_pages[$menu_slug] = false;

		return $hookname;
	}

	public function submenu_page(
		$parent_slug, $page_title, $menu_title, $capability, $menu_slug, $function = ''
	) {
		global $submenu, $menu, $_wp_real_parent_file, $_wp_submenu_nopriv,
			$_registered_pages, $_parent_pages;

		$menu_slug = plugin_basename( $menu_slug );
		$parent_slug = plugin_basename( $parent_slug);

		if ( isset( $_wp_real_parent_file[$parent_slug] ) )
			$parent_slug = $_wp_real_parent_file[$parent_slug];

		if ( !current_user_can( $capability ) ) {
			$_wp_submenu_nopriv[$parent_slug][$menu_slug] = true;
			return false;
		}

		/*
		 * If the parent doesn't already have a submenu, add a link to the parent
		 * as the first item in the submenu. If the submenu file is the same as the
		 * parent file someone is trying to link back to the parent manually. In
		 * this case, don't automatically add a link back to avoid duplication.
		 */
		if (!isset( $submenu[$parent_slug] ) && $menu_slug != $parent_slug ) {
			foreach ( (array)$menu as $parent_menu ) {
				if ( $parent_menu[2] == $parent_slug && current_user_can( $parent_menu[1] ) )
					$submenu[$parent_slug][] = array_slice( $parent_menu, 0, 4 );
			}
		}

		$submenu[$parent_slug][] = array ( $menu_title, $capability, $menu_slug, $page_title );

		$hookname = get_plugin_page_hookname( $menu_slug, $parent_slug);
		if (!empty ( $function ) && !empty ( $hookname ))
			add_action( $hookname, $function );

		$_registered_pages[$hookname] = true;

		/*
		 * Backward-compatibility for plugins using add_management page.
		 * See wp-admin/admin.php for redirect from edit.php to tools.php
		 */
		if ( 'tools.php' == $parent_slug )
			$_registered_pages[get_plugin_page_hookname( $menu_slug, 'edit.php')] = true;

		// No parent as top level.
		$_parent_pages[$menu_slug] = $parent_slug;

		return $hookname;
	}

	/**
	 * Redirect
	 */
	public function redirect_after_theme_switch() {
		if ( ! ct_is_dashboard_page() ) {
			wp_safe_redirect(
				admin_url(
					'/admin.php?page=' . $this->page_slug,
					'http'
				)
			);

			exit;
		}
	}

	/**
	 * Render templates for welcome page
	 */
	public function welcome_page_template() {
		if ( ! current_user_can( 'manage_options' ) ) {
			wp_die( esc_html( __( 'You do not have sufficient permissions to access this page.', 'ct' ) ) );
		}

		echo '<div id="ct-dashboard"></div>';
	}
}

new CT_Dashboard_Page();