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Filename : DashboardWidget.php
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<?php

namespace WPForms\Lite\Admin;

use WPForms\Admin\Blocks\Links;
use WPForms\Admin\Dashboard\Widget;

/**
 * Dashboard Widget shows a chart and the form entries stats in WP Dashboard.
 *
 * @since 1.5.0
 */
class DashboardWidget extends Widget {

	/**
	 * Widget settings.
	 *
	 * @since 1.5.0
	 *
	 * @var array
	 */
	public $settings;

	/**
	 * Init class.
	 *
	 * @since 1.5.5
	 */
	public function init() { // phpcs:ignore WPForms.PHP.HooksMethod.InvalidPlaceForAddingHooks

		// phpcs:disable WPForms.PHP.ValidateHooks.InvalidHookName
		/**
		 * Allow disabling the widget.
		 *
		 * @since 1.5.1
		 *
		 * @param bool $load Should the widget be loaded?
		 */
		if ( ! apply_filters( 'wpforms_admin_dashboardwidget', true ) ) {
			return;
		}
		// phpcs:enable WPForms.PHP.ValidateHooks.InvalidHookName

		add_action( 'wpforms_process_complete', [ static::class, 'clear_widget_cache' ] );
		add_action( 'admin_init', [ $this, 'admin_init' ] );
	}

	/**
	 * Admin init class.
	 *
	 * @since 1.8.3
	 */
	public function admin_init() { // phpcs:ignore WPForms.PHP.HooksMethod.InvalidPlaceForAddingHooks

		// This widget should be displayed for certain high-level users only.
		if ( ! wpforms_current_user_can( 'view_forms' ) ) {
			return;
		}

		add_action( 'wpforms_create_form', [ static::class, 'clear_widget_cache' ] );
		add_action( 'wpforms_save_form', [ static::class, 'clear_widget_cache' ] );
		add_action( 'wpforms_delete_form', [ static::class, 'clear_widget_cache' ] );

		/**
		 * Clear cache after Lite plugin deactivation.
		 *
		 * Also triggered when the user upgrades the plugin to the Pro version.
		 * After activation of the Pro version, the cache will be cleared.
		 */
		add_action( 'deactivate_wpforms-lite/wpforms.php', [ static::class, 'clear_widget_cache' ] );

		if ( ! $this->is_dashboard_page() && ! $this->is_dashboard_widget_ajax_request() ) {
			return;
		}

		$this->settings();
		$this->hooks();
	}

	/**
	 * Filterable widget settings.
	 *
	 * @since 1.5.0
	 */
	public function settings() {

		// phpcs:disable WPForms.Comments.PHPDocHooks.RequiredHookDocumentation, WPForms.PHP.ValidateHooks.InvalidHookName

		$this->settings = [

			// Number of forms to display in the forms' list before the "Show More" button appears.
			'forms_list_number_to_display'     => apply_filters( 'wpforms_dash_widget_forms_list_number_to_display', 5 ),

			// Allow results caching to reduce a DB load.
			'allow_data_caching'               => apply_filters( 'wpforms_dash_widget_allow_data_caching', true ),

			// Transient lifetime in seconds. Defaults to the end of a current day.
			'transient_lifetime'               => apply_filters( 'wpforms_dash_widget_transient_lifetime', strtotime( 'tomorrow' ) - time() ),

			// Determine if the forms with no entries should appear in a forms' list.
			// Once switched, the effect applies after cache expiration.
			'display_forms_list_empty_entries' => apply_filters( 'wpforms_dash_widget_display_forms_list_empty_entries', true ),
		];

		// phpcs:enable WPForms.Comments.PHPDocHooks.RequiredHookDocumentation, WPForms.PHP.ValidateHooks.InvalidHookName
	}

	/**
	 * Widget hooks.
	 *
	 * @since 1.5.0
	 */
	public function hooks() {

		$widget_slug = static::SLUG;

		add_action( 'admin_enqueue_scripts', [ $this, 'widget_scripts' ] );
		add_action( 'wp_dashboard_setup', [ $this, 'widget_register' ] );
		add_action( 'admin_init', [ $this, 'hide_widget' ] );
		add_action( "wp_ajax_wpforms_{$widget_slug}_save_widget_meta", [ $this, 'save_widget_meta_ajax' ] );
	}

	/**
	 * Load widget-specific scripts.
	 *
	 * @since 1.5.0
	 *
	 * @param string $hook_suffix The current admin page.
	 */
	public function widget_scripts( $hook_suffix ) {

		if ( $hook_suffix !== 'index.php' ) {
			return;
		}

		$min = wpforms_get_min_suffix();

		wp_enqueue_style(
			'wpforms-dashboard-widget',
			WPFORMS_PLUGIN_URL . "assets/css/dashboard-widget{$min}.css",
			[],
			WPFORMS_VERSION
		);

		wp_enqueue_script(
			'wpforms-chart',
			WPFORMS_PLUGIN_URL . 'assets/lib/chart.min.js',
			[ 'moment' ],
			'4.5.1',
			true
		);

		wp_enqueue_script(
			'wpforms-dashboard-widget',
			WPFORMS_PLUGIN_URL . "assets/lite/js/admin/dashboard-widget{$min}.js",
			[ 'jquery', 'wpforms-chart' ],
			WPFORMS_VERSION,
			true
		);

		wp_localize_script(
			'wpforms-dashboard-widget',
			'wpforms_dashboard_widget',
			[
				'nonce'          => wp_create_nonce( 'wpforms_' . static::SLUG . '_nonce' ),
				'slug'           => static::SLUG,
				'show_more_html' => esc_html__( 'Show More', 'wpforms-lite' ) . '<span class="dashicons dashicons-arrow-down"></span>',
				'show_less_html' => esc_html__( 'Show Less', 'wpforms-lite' ) . '<span class="dashicons dashicons-arrow-up"></span>',
				'i18n'           => [
					'entries' => esc_html__( 'Entries', 'wpforms-lite' ),
				],
				// Adapter for Chart.js to use Moment.js for date formatting.
				'adapter_path'   => WPFORMS_PLUGIN_URL . 'assets/lib/chartjs-adapter-moment.min.js?ver=1.0.1',
			]
		);
	}

	/**
	 * Register the widget.
	 *
	 * @since 1.5.0
	 */
	public function widget_register() {

		global $wp_meta_boxes;

		$widget_key = 'wpforms_reports_widget_lite';

		wp_add_dashboard_widget(
			$widget_key,
			esc_html__( 'WPForms', 'wpforms-lite' ),
			[ $this, 'widget_content' ]
		);

		// Attempt to place the widget at the top.
		$normal_dashboard = $wp_meta_boxes['dashboard']['normal']['core'];
		$widget_instance  = [ $widget_key => $normal_dashboard[ $widget_key ] ];

		unset( $normal_dashboard[ $widget_key ] );

		$sorted_dashboard = array_merge( $widget_instance, $normal_dashboard );

		// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
		$wp_meta_boxes['dashboard']['normal']['core'] = $sorted_dashboard;
	}

	/**
	 * Load widget content.
	 *
	 * @since 1.5.0
	 */
	public function widget_content() {

		$forms          = wpforms()->obj( 'form' )->get( '', [ 'fields' => 'ids' ] );
		$hide_graph     = (bool) $this->widget_meta( 'get', 'hide_graph' );
		$no_graph_class = $hide_graph ? 'wpforms-dash-widget-no-graph' : '';

		echo '<div class="wpforms-dash-widget wpforms-lite ' . esc_attr( $no_graph_class ) . '">';

		if ( empty( $forms ) ) {
			$this->widget_content_no_forms_html();
		} else {
			$this->widget_content_html( $hide_graph );
		}

		Links::render(
			[
				'docs' => [
					'medium'  => 'dashboard-widget',
					'content' => 'docs',
				],
			]
		);

		$plugin           = $this->get_recommended_plugin();
		$hide_recommended = $this->widget_meta( 'get', 'hide_recommended_block' );

		if (
			! empty( $plugin ) &&
			! empty( $forms ) &&
			! $hide_recommended
		) {
			$this->recommended_plugin_block_html( $plugin );
		}

		echo '</div><!-- .wpforms-dash-widget -->';
	}

	/**
	 * Widget content HTML if a user has no forms.
	 *
	 * @since 1.5.0
	 */
	public function widget_content_no_forms_html() {

		$create_form_url = add_query_arg( 'page', 'wpforms-builder', admin_url( 'admin.php' ) );
		$learn_more_url  = 'https://wpforms.com/docs/creating-first-form/?utm_source=WordPress&utm_medium=link&utm_campaign=liteplugin&utm_content=dashboardwidget';

		?>
		<div class="wpforms-dash-widget-block wpforms-dash-widget-block-no-forms">
			<img class="wpforms-dash-widget-block-sullie-logo" src="<?php echo esc_url( WPFORMS_PLUGIN_URL . 'assets/images/sullie.png' ); ?>" alt="<?php esc_attr_e( 'Sullie the WPForms mascot', 'wpforms-lite' ); ?>">
			<h2><?php esc_html_e( 'Create Your First Form to Start Collecting Leads', 'wpforms-lite' ); ?></h2>
			<p><?php esc_html_e( 'You can use WPForms to build contact forms, surveys, payment forms, and more with just a few clicks.', 'wpforms-lite' ); ?></p>

			<?php if ( wpforms_current_user_can( 'create_forms' ) ) : ?>
				<a href="<?php echo esc_url( $create_form_url ); ?>" class="button button-primary">
					<?php esc_html_e( 'Create Your Form', 'wpforms-lite' ); ?>
				</a>
			<?php endif; ?>

			<a href="<?php echo esc_url( $learn_more_url ); ?>" class="button" target="_blank" rel="noopener noreferrer">
				<?php esc_html_e( 'Learn More', 'wpforms-lite' ); ?>
			</a>
		</div>
		<?php
	}

	/**
	 * Widget content HTML.
	 *
	 * @since 1.5.0
	 * @since 1.7.4 Added hide graph parameter.
	 *
	 * @param bool $hide_graph Whether the graph is hidden.
	 */
	public function widget_content_html( $hide_graph = false ) {

		// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
		/**
		 * Filters the content before the Dashboard Widget Chart block container (for Lite).
		 *
		 * @since 1.7.4
		 *
		 * @param string $chart_block_before Chart block before markup.
		 */
		echo apply_filters( 'wpforms_lite_admin_dashboard_widget_content_html_chart_block_before', '' );
		// phpcs:enable WordPress.Security.EscapeOutput.OutputNotEscaped

		if ( ! $hide_graph ) :
		?>

		<div class="wpforms-dash-widget-chart-block-container">

			<div class="wpforms-dash-widget-block wpforms-dash-widget-chart-block">
				<canvas id="wpforms-dash-widget-chart" width="400" height="300"></canvas>
			</div>

			<div class="wpforms-dash-widget-block-upgrade">
				<div class="wpforms-dash-widget-modal">
					<a href="#" class="wpforms-dash-widget-dismiss-chart-upgrade">
						<span class="dashicons dashicons-no-alt"></span>
					</a>
					<h2><?php esc_html_e( 'View all Form Entries inside the WordPress Dashboard', 'wpforms-lite' ); ?></h2>
					<p><?php esc_html_e( 'Form entries reports are not available.', 'wpforms-lite' ); ?>
					<?php esc_html_e( 'Form entries are not stored in Lite.', 'wpforms-lite' ); ?>
					<?php esc_html_e( 'Upgrade to Pro and get access to the reports.', 'wpforms-lite' ); ?></p>
					<p>
						<a href="<?php echo esc_url( wpforms_admin_upgrade_link( 'dashboard-widget', 'upgrade-to-pro' ) ); ?>" class="wpforms-dash-widget-upgrade-btn" target="_blank" rel="noopener noreferrer">
							<?php esc_html_e( 'Upgrade to WPForms Pro', 'wpforms-lite' ); ?>
						</a>
					</p>
				</div>
			</div>

		</div>

		<?php endif; ?>

		<div class="wpforms-dash-widget-block wpforms-dash-widget-block-title">
			<h3><?php esc_html_e( 'Total Entries by Form', 'wpforms-lite' ); ?></h3>
			<div class="wpforms-dash-widget-settings">
				<?php
				$this->timespan_select_html( 0, false );
				$this->widget_settings_html( false );
				?>
			</div>
		</div>

		<div id="wpforms-dash-widget-forms-list-block" class="wpforms-dash-widget-block wpforms-dash-widget-forms-list-block">
			<?php $this->forms_list_block(); ?>
		</div>

		<?php
	}

	/**
	 * Forms list block.
	 *
	 * @since 1.5.0
	 */
	public function forms_list_block() {

		$forms = $this->get_entries_count_by_form();

		if ( empty( $forms ) ) {
			$this->forms_list_block_empty_html();
		} else {
			$this->forms_list_block_html( $forms );
		}
	}

	/**
	 * Empty forms list block HTML.
	 *
	 * @since 1.5.0
	 */
	public function forms_list_block_empty_html() {

		?>
		<p class="wpforms-error wpforms-error-no-data-forms-list">
			<?php esc_html_e( 'No entries were submitted yet.', 'wpforms-lite' ); ?>
		</p>
		<?php
	}

	/**
	 * Forms list block HTML.
	 *
	 * @since 1.5.0
	 *
	 * @param array $forms Forms to display in the list.
	 */
	public function forms_list_block_html( $forms ) {

		// Number of forms to display in the forms' list before the "Show More" button appears.
		$show_forms = $this->settings['forms_list_number_to_display'];

		?>
		<table id="wpforms-dash-widget-forms-list-table" cellspacing="0">
			<?php foreach ( array_values( $forms ) as $key => $form ) : ?>
				<tr <?php echo $key >= $show_forms ? 'class="wpforms-dash-widget-forms-list-hidden-el"' : ''; ?> data-form-id="<?php echo absint( $form['form_id'] ); ?>">
					<td><span class="wpforms-dash-widget-form-title"><?php echo esc_html( $form['title'] ); ?></span></td>
					<td><?php echo absint( $form['count'] ); ?></td>
				</tr>
			<?php endforeach; ?>
		</table>

		<?php if ( count( $forms ) > $show_forms ) : ?>
			<button type="button" id="wpforms-dash-widget-forms-more" class="wpforms-dash-widget-forms-more" title="<?php esc_html_e( 'Show all forms', 'wpforms-lite' ); ?>">
				<?php esc_html_e( 'Show More', 'wpforms-lite' ); ?> <span class="dashicons dashicons-arrow-down"></span>
			</button>
		<?php endif; ?>

		<?php
	}


	/**
	 * Recommended plugin block HTML.
	 *
	 * @since 1.5.0
	 * @since 1.7.3 Added plugin parameter.
	 *
	 * @param array $plugin Plugin data.
	 */
	public function recommended_plugin_block_html( $plugin = [] ) {

		if ( ! $plugin ) {
			return;
		}

		$install_url = wp_nonce_url(
			self_admin_url( 'update.php?action=install-plugin&plugin=' . rawurlencode( $plugin['slug'] ) ),
			'install-plugin_' . $plugin['slug']
		);

		?>
		<div class="wpforms-dash-widget-block wpforms-dash-widget-recommended-plugin-block">
			<span class="wpforms-dash-widget-recommended-plugin">
				<span class="recommended"><?php esc_html_e( 'Recommended Plugin:', 'wpforms-lite' ); ?></span>
				<strong><?php echo esc_html( $plugin['name'] ); ?></strong>
				<span class="sep">-</span>
				<span class="action-links">
					<?php if ( wpforms_can_install( 'plugin' ) ) { ?>
						<a href="<?php echo esc_url( $install_url ); ?>"><?php esc_html_e( 'Install', 'wpforms-lite' ); ?></a>
						<span class="sep sep-vertical">&vert;</span>
					<?php } ?>
					<a href="<?php echo esc_url( $plugin['more'] ); ?>?utm_source=wpformsplugin&utm_medium=link&utm_campaign=wpformsdashboardwidget"><?php esc_html_e( 'Learn More', 'wpforms-lite' ); ?></a>
				</span>
			</span>
			<button type="button" class="wpforms-dash-widget-dismiss-icon" title="<?php esc_html_e( 'Dismiss', 'wpforms-lite' ); ?>" data-field="hide_recommended_block">
				<span class="dashicons dashicons-no-alt"></span>
			</button>
		</div>
		<?php
	}

	/**
	 * The welcome block HTML.
	 *
	 * @since 1.8.7
	 * @deprecated 1.9.7
	 */
	public function welcome_block_html() {

		return '';
	}

	/**
	 * Get entries count grouped by form.
	 * Main point of entry to fetch form entry count data from DB.
	 * Cache the result.
	 *
	 * @since 1.5.0
	 *
	 * @return array
	 */
	public function get_entries_count_by_form(): array {

		// Allow results caching to reduce a DB load.
		$allow_caching  = $this->settings['allow_data_caching'];
		$transient_name = 'wpforms_dash_widget_lite_entries_by_form';

		if ( $allow_caching ) {
			$cache = get_transient( $transient_name );

			/**
			 * Filters the cache to clear or alter its data.
			 *
			 * @since 1.5.0
			 *
			 * @param mixed $cache The cache content.
			 */
			$cache = apply_filters( 'wpforms_dash_widget_lite_cached_data', $cache ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName
		}

		// is_array() detects cached empty searches.
		if ( $allow_caching && is_array( $cache ) ) {
			return $cache;
		}

		$forms = wpforms()->obj( 'form' )->get( '', [ 'fields' => 'ids' ] );

		if ( empty( $forms ) || ! is_array( $forms ) ) {
			return [];
		}

		$result = [];

		foreach ( $forms as $form_id ) {
			$count = absint( get_post_meta( $form_id, 'wpforms_entries_count', true ) );

			if ( empty( $count ) && empty( $this->settings['display_forms_list_empty_entries'] ) ) {
				continue;
			}

			$result[ $form_id ] = [
				'form_id' => $form_id,
				'count'   => $count,
				'title'   => get_the_title( $form_id ),
			];
		}

		if ( ! empty( $result ) ) {
			// Sort forms by entries count (desc).
			uasort(
				$result,
				static function ( $a, $b ) {

					return ( $a['count'] > $b['count'] ) ? -1 : 1;
				}
			);
		}

		if ( $allow_caching ) {
			// Transient lifetime in seconds. Defaults to the end of a current day.
			$transient_lifetime = $this->settings['transient_lifetime'];

			set_transient( $transient_name, $result, $transient_lifetime );
		}

		return $result;
	}

	/**
	 * Hide dashboard widget.
	 * Use dashboard screen options to make it visible again.
	 *
	 * @since 1.5.0
	 */
	public function hide_widget() {

		if ( ! is_admin() || ! is_user_logged_in() ) {
			return;
		}

		if ( ! isset( $_GET['wpforms-nonce'] ) || ! wp_verify_nonce( sanitize_key( wp_unslash( $_GET['wpforms-nonce'] ) ), 'wpforms_hide_dash_widget' ) ) {
			return;
		}

		if ( ! isset( $_GET['wpforms-widget'] ) || $_GET['wpforms-widget'] !== 'hide' ) {
			return;
		}

		$user_id       = get_current_user_id();
		$metaboxhidden = get_user_meta( $user_id, 'metaboxhidden_dashboard', true );

		if ( ! is_array( $metaboxhidden ) ) {
			update_user_meta( $user_id, 'metaboxhidden_dashboard', [ 'wpforms_reports_widget_lite' ] );
		}

		if ( is_array( $metaboxhidden ) && ! in_array( 'wpforms_reports_widget_lite', $metaboxhidden, true ) ) {
			$metaboxhidden[] = 'wpforms_reports_widget_lite';

			update_user_meta( $user_id, 'metaboxhidden_dashboard', $metaboxhidden );
		}

		$redirect_url = remove_query_arg( [ 'wpforms-widget', 'wpforms-nonce' ] );

		wp_safe_redirect( $redirect_url );
		exit();
	}

	/**
	 * Clear dashboard widget cached data.
	 *
	 * @since 1.5.2
	 */
	public static function clear_widget_cache() {

		delete_transient( 'wpforms_dash_widget_lite_entries_by_form' );
	}
}