<?php
/**
 * Manage the ExactMetrics Dashboard Widget
 *
 * @since 7.1
 *
 * @package ExactMetrics
 */

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

/**
 * Class ExactMetrics_Dashboard_Widget
 */
class ExactMetrics_Dashboard_Widget {

	const WIDGET_KEY = 'exactmetrics_reports_widget';
	/**
	 * The default options for the widget.
	 *
	 * @var array $default_options
	 */
	public static $default_options = array(
		'width'    => 'regular',
		'interval' => '30',
		'compact'  => false,
		'reports'  => array(
			'overview'    => array(
				'toppages'    => true,
				'newvsreturn' => true,
				'devices'     => true,
			),
			'publisher'   => array(
				'landingpages'   => false,
				'exitpages'      => false,
				'outboundlinks'  => false,
				'affiliatelinks' => false,
				'downloadlinks'  => false,
			),
			'ecommerce'   => array(
				'infobox'     => false, // E-commerce Overview.
				'products'    => false, // Top Products.
				'conversions' => false, // Top Products.
				'addremove'   => false, // Total Add/Remove.
				'days'        => false, // Time to purchase.
				'sessions'    => false, // Sessions to purchase.
			),
			'notice30day' => false,
		),
	);
	/**
	 * The widget options.
	 *
	 * @var array $options
	 */
	public $options;

	/**
	 * ExactMetrics_Dashboard_Widget constructor.
	 */
	public function __construct() {
		// Allow dashboard widget to be hidden on multisite installs
		$show_widget         = is_multisite() ? apply_filters( 'exactmetrics_show_dashboard_widget', true ) : true;
		if ( ! $show_widget ) {
			return false;
		}

		// Check if reports should be visible.
		$dashboards_disabled = exactmetrics_get_option( 'dashboards_disabled', false );
		if ( ! current_user_can( 'exactmetrics_view_dashboard' ) || 'disabled' === $dashboards_disabled ) {
			return false;
		}

		add_action( 'wp_dashboard_setup', array( $this, 'register_dashboard_widget' ) );

		add_action( 'admin_enqueue_scripts', array( $this, 'widget_scripts' ) );

		add_action( 'wp_ajax_exactmetrics_save_widget_state', array( $this, 'save_widget_state' ) );

		// Reminder notice.
		add_action( 'admin_footer', array( $this, 'load_notice' ) );

		add_action( 'wp_ajax_exactmetrics_mark_notice_closed', array( $this, 'mark_notice_closed' ) );
	}

	/**
	 * Register the dashboard widget.
	 */
	public function register_dashboard_widget() {
		global $wp_meta_boxes;

		wp_add_dashboard_widget(
			self::WIDGET_KEY,
			esc_html__( 'ExactMetrics', 'google-analytics-dashboard-for-wp' ),
			array( $this, 'dashboard_widget_content' )
		);

		// Attept to place the widget at the top.
		$normal_dashboard = $wp_meta_boxes['dashboard']['normal']['core'];
		$widget_instance  = array( self::WIDGET_KEY => $normal_dashboard[ self::WIDGET_KEY ] );
		unset( $normal_dashboard[ self::WIDGET_KEY ] );
		$sorted_dashboard                             = array_merge( $widget_instance, $normal_dashboard );
		$wp_meta_boxes['dashboard']['normal']['core'] = $sorted_dashboard;
	}

	/**
	 * Load the widget content.
	 */
	public function dashboard_widget_content() {
		$is_authed = ( ExactMetrics()->auth->is_authed() || ExactMetrics()->auth->is_network_authed() );

		if ( ! $is_authed ) {
			$this->widget_content_no_auth();
		} else {
			exactmetrics_settings_error_page( 'exactmetrics-dashboard-widget', '', '0' );
			exactmetrics_settings_inline_js();
		}

	}

	/**
	 * Message to display when the plugin is not authenticated.
	 */
	public function widget_content_no_auth() {

		$url      = is_network_admin() ? network_admin_url( 'admin.php?page=exactmetrics-onboarding' ) : admin_url( 'admin.php?page=exactmetrics-onboarding' );
		$migrated = exactmetrics_get_option( 'gadwp_migrated', 0 );
		if ( $migrated > 0 ) {
			$url = admin_url( 'admin.php?page=exactmetrics-getting-started&exactmetrics-migration=1' );
		}
		?>
		<div class="mi-dw-not-authed">
			<h2><?php esc_html_e( 'Website Analytics is not Setup', 'google-analytics-dashboard-for-wp' ); ?></h2>
			<?php if ( current_user_can( 'exactmetrics_save_settings' ) ) { ?>
				<p><?php esc_html_e( 'To see your website stats, please connect ExactMetrics to Google Analytics.', 'google-analytics-dashboard-for-wp' ); ?></p>
				<a href="<?php echo esc_url( $url ); ?>" class="mi-dw-btn-large"><?php esc_html_e( 'Setup Website Analytics', 'google-analytics-dashboard-for-wp' ); ?></a>
			<?php } else { ?>
				<p><?php esc_html_e( 'To see your website stats, please ask your webmaster to connect ExactMetrics to Google Analytics.', 'google-analytics-dashboard-for-wp' ); ?></p>
			<?php } ?>
		</div>
		<?php
	}


	/**
	 * Load widget-specific scripts.
	 */
	public function widget_scripts() {
		$version_path = 'lite';
		$rtl          = is_rtl() ? '.rtl' : '';

		$screen = get_current_screen();
		if ( isset( $screen->id ) && 'dashboard' === $screen->id ) {
			global $wp_version;
			if ( ! defined( 'EXACTMETRICS_LOCAL_WIDGET_JS_URL' ) ) {
				wp_enqueue_style( 'exactmetrics-vue-style-vendors', plugins_url( $version_path . '/assets/vue/css/chunk-vendors' . $rtl . '.css', EXACTMETRICS_PLUGIN_FILE ), array(), exactmetrics_get_asset_version() );
				wp_enqueue_style( 'exactmetrics-vue-widget-style', plugins_url( $version_path . '/assets/vue/css/widget' . $rtl . '.css', EXACTMETRICS_PLUGIN_FILE ), array(), exactmetrics_get_asset_version() );
				wp_enqueue_script( 'exactmetrics-vue-vendors', plugins_url( $version_path . '/assets/vue/js/chunk-vendors.js', EXACTMETRICS_PLUGIN_FILE ), array(), exactmetrics_get_asset_version(), true );
				wp_enqueue_script( 'exactmetrics-vue-common', plugins_url( $version_path . '/assets/vue/js/chunk-common.js', EXACTMETRICS_PLUGIN_FILE ), array(), exactmetrics_get_asset_version(), true );
			} else {
				wp_enqueue_script( 'exactmetrics-vue-vendors', EXACTMETRICS_LOCAL_VENDORS_JS_URL, array(), exactmetrics_get_asset_version(), true );
				wp_enqueue_script( 'exactmetrics-vue-common', EXACTMETRICS_LOCAL_COMMON_JS_URL, array(), exactmetrics_get_asset_version(), true );
			}
			$widget_js_url = defined( 'EXACTMETRICS_LOCAL_WIDGET_JS_URL' ) && EXACTMETRICS_LOCAL_WIDGET_JS_URL ? EXACTMETRICS_LOCAL_WIDGET_JS_URL : plugins_url( $version_path . '/assets/vue/js/widget.js', EXACTMETRICS_PLUGIN_FILE );
			wp_register_script( 'exactmetrics-vue-widget', $widget_js_url, array(), exactmetrics_get_asset_version(), true );
			wp_enqueue_script( 'exactmetrics-vue-widget' );

			$plugins           = get_plugins();
			$wp_forms_url      = false;
			$wpforms_installed = false;
			if ( current_user_can( 'install_plugins' ) ) {
				$wpforms_key = 'wpforms-lite/wpforms.php';
				if ( array_key_exists( $wpforms_key, $plugins ) ) {
					$wp_forms_url      = wp_nonce_url( self_admin_url( 'plugins.php?action=activate&plugin=' . $wpforms_key ), 'activate-plugin_' . $wpforms_key );
					$wpforms_installed = true;
				} else {
					$wp_forms_url = wp_nonce_url( self_admin_url( 'update.php?action=install-plugin&plugin=wpforms-lite' ), 'install-plugin_wpforms-lite' );
				}
			}
			$is_authed = ( ExactMetrics()->auth->is_authed() || ExactMetrics()->auth->is_network_authed() );
			wp_localize_script(
				'exactmetrics-vue-widget',
				'exactmetrics',
				array(
					'ajax'                => admin_url( 'admin-ajax.php' ),
					'nonce'               => wp_create_nonce( 'mi-admin-nonce' ),
					'network'             => is_network_admin(),
					'translations'        => wp_get_jed_locale_data( exactmetrics_is_pro_version() ? 'exactmetrics-premium' : 'google-analytics-dashboard-for-wp' ),
					'assets'              => plugins_url( $version_path . '/assets/vue', EXACTMETRICS_PLUGIN_FILE ),
					'shareasale_id'       => exactmetrics_get_shareasale_id(),
					'shareasale_url'      => exactmetrics_get_shareasale_url( exactmetrics_get_shareasale_id(), '' ),
					'addons_url'          => is_multisite() ? network_admin_url( 'admin.php?page=exactmetrics_network#/addons' ) : admin_url( 'admin.php?page=exactmetrics_settings#/addons' ),
					'widget_state'        => $this->get_options(),
					'wpforms_enabled'     => function_exists( 'wpforms' ),
					'wpforms_installed'   => $wpforms_installed,
					'wpforms_url'         => $wp_forms_url,
					'authed'              => $is_authed,
					// Used to add notices for future deprecations.
					'versions'            => array(
						'php_version'          => phpversion(),
						'php_version_below_54' => apply_filters( 'exactmetrics_temporarily_hide_php_52_and_53_upgrade_warnings', version_compare( phpversion(), '5.4', '<' ) ),
						'php_version_below_56' => apply_filters( 'exactmetrics_temporarily_hide_php_54_and_55_upgrade_warnings', version_compare( phpversion(), '5.6', '<' ) ),
						'php_update_link'      => exactmetrics_get_url( 'settings-notice', 'settings-page', 'https://www.exactmetrics.com/docs/update-php/' ),
						'wp_version'           => $wp_version,
						'wp_version_below_46'  => version_compare( $wp_version, '4.6', '<' ),
						'wp_version_below_49'  => version_compare( $wp_version, '4.9', '<' ),
						'wp_update_link'       => exactmetrics_get_url( 'settings-notice', 'settings-page', 'https://www.exactmetrics.com/docs/update-wordpress/' ),
					),
					'plugin_version'      => EXACTMETRICS_VERSION,
					'is_admin'            => true,
					'reports_url'         => add_query_arg( 'page', 'exactmetrics_reports', admin_url( 'admin.php' ) ),
					'getting_started_url' => is_multisite() ? network_admin_url( 'admin.php?page=exactmetrics_network#/about/getting-started' ) : admin_url( 'admin.php?page=exactmetrics_settings#/about/getting-started' ),
					'wizard_url'          => admin_url( 'index.php?page=exactmetrics-onboarding' ),
				)
			);

			$this->remove_conflicting_asset_files();
		}
	}

	/**
	 * Remove assets added by other plugins which conflict.
	 */
	public function remove_conflicting_asset_files() {
		$scripts = array(
			'jetpack-onboarding-vendor', // Jetpack Onboarding Bluehost.
		);

		if ( ! empty( $scripts ) ) {
			foreach ( $scripts as $script ) {
				wp_dequeue_script( $script ); // Remove JS file.
				wp_deregister_script( $script );
			}
		}
	}

	/**
	 * Store the widget state in the db using an Ajax call.
	 */
	public function save_widget_state() {

		check_ajax_referer( 'mi-admin-nonce', 'nonce' );

		$default         = self::$default_options;
		$current_options = $this->get_options();

		$reports = $default['reports'];
		if ( isset( $_POST['reports'] ) ) {
			$reports = json_decode( sanitize_text_field( wp_unslash( $_POST['reports'] ) ), true );
			foreach ( $reports as $report => $reports_sections ) {
				$reports[ $report ] = array_map( 'boolval', $reports_sections );
			}
		}

		$options = array(
			'width'    => ! empty( $_POST['width'] ) ? sanitize_text_field( wp_unslash( $_POST['width'] ) ) : $default['width'],
			'interval' => ! empty( $_POST['interval'] ) ? absint( wp_unslash( $_POST['interval'] ) ) : $default['interval'],
			'compact'     => ! empty( $_POST['compact'] ) ? 'true' === sanitize_text_field( wp_unslash( $_POST['compact'] ) ) : $default['compact'],
			'reports'  => $reports,
			'notice30day' => $current_options['notice30day'],
		);

		array_walk( $options, 'sanitize_text_field' );
		update_user_meta( get_current_user_id(), 'exactmetrics_user_preferences', $options );

		wp_send_json_success();

	}

	/**
	 * Load & store the dashboard widget settings.
	 *
	 * @return array
	 */
	public function get_options() {
		if ( ! isset( $this->options ) ) {
			$this->options = self::wp_parse_args_recursive( get_user_meta( get_current_user_id(), 'exactmetrics_user_preferences', true ), self::$default_options );
		}

		return apply_filters( 'exactmetrics_dashboard_widget_options', $this->options );

	}

	/**
	 * Recursive wp_parse_args.
	 *
	 * @param string|array|object $a Value to merge with $b.
	 * @param array               $b The array with the default values.
	 *
	 * @return array
	 */
	public static function wp_parse_args_recursive( $a, $b ) {
		$a      = (array) $a;
		$b      = (array) $b;
		$result = $b;
		foreach ( $a as $k => &$v ) {
			if ( is_array( $v ) && isset( $result[ $k ] ) ) {
				$result[ $k ] = self::wp_parse_args_recursive( $v, $result[ $k ] );
			} else {
				$result[ $k ] = $v;
			}
		}

		return $result;
	}

	/**
	 * Reminder notice markup.
	 */
	public function load_notice() {

		$screen = get_current_screen();
		$ua     = exactmetrics_get_ua();
		if ( isset( $screen->id ) && 'dashboard' === $screen->id && ! empty( $ua ) ) {
			?>
			<div id="exactmetrics-reminder-notice"></div>
			<?php
		}

	}

	/**
	 * Mark notice as dismissed.
	 */
	public function mark_notice_closed() {

		check_ajax_referer( 'mi-admin-nonce', 'nonce' );
		$options                = $this->get_options();
		$options['notice30day'] = time();
		update_user_meta( get_current_user_id(), 'exactmetrics_user_preferences', $options );

		wp_send_json_success();
	}
}
