<?php

namespace WPForms\Admin\Forms;

use WP_List_Table;
use WP_Post;
use WP_Screen;
use WPForms\Admin\Forms\Table\Facades\Columns;
use WPForms\Forms\Locator;
use WPForms\Integrations\LiteConnect\LiteConnect;
use WPForms\Integrations\LiteConnect\Integration as LiteConnectIntegration;

// IMPORTANT NOTICE:
// This line is needed to prevent fatal errors in the third-party plugins.
// We know about Jetpack (probably others also) can load WP classes during cron jobs or something similar.
require_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';

/**
 * Generate the table on the plugin overview page.
 *
 * @since 1.8.6
 */
class ListTable extends WP_List_Table {

	/**
	 * Number of forms to show per page.
	 *
	 * @since 1.8.6
	 *
	 * @var int
	 */
	public $per_page;

	/**
	 * Number of forms in different views.
	 *
	 * @since 1.8.6
	 *
	 * @var array
	 */
	private $count;

	/**
	 * Current view.
	 *
	 * @since 1.8.6
	 *
	 * @var string
	 */
	private $view;

	/**
	 * Primary class constructor.
	 *
	 * @since 1.8.6
	 */
	public function __construct() {

		// Utilize the parent constructor to build the main class properties.
		parent::__construct(
			[
				'singular' => 'form',
				'plural'   => 'forms',
				'ajax'     => false,
			]
		);

		$this->hooks();

		// Determine the current view.
		$this->view = wpforms()->obj( 'forms_views' )->get_current_view();

		/**
		 * Filters the default number of forms to show per page.
		 *
		 * @since 1.0.0
		 *
		 * @param int $forms_per_page Number of forms to show per page.
		 */
		$this->per_page = (int) apply_filters( 'wpforms_overview_per_page', 20 ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName
	}

	/**
	 * Register hooks.
	 *
	 * @since 1.8.6
	 */
	private function hooks() {

		add_filter( 'default_hidden_columns', [ $this, 'default_hidden_columns' ], 10, 2 );
	}

	/**
	 * Get the instance of a class and store it in itself.
	 *
	 * @since 1.8.6
	 */
	public static function get_instance() {

		static $instance;

		if ( ! $instance ) {
			$instance = new self();
		}

		return $instance;
	}

	/**
	 * Retrieve the table columns.
	 *
	 * @since 1.8.6
	 *
	 * @return array $columns Array of all the list table columns.
	 */
	public function get_columns() {

		return Columns::get_list_table_columns();
	}

	/**
	 * Render the checkbox column.
	 *
	 * @since 1.8.6
	 *
	 * @param WP_Post $form Form.
	 *
	 * @return string
	 */
	public function column_cb( $form ) {

		return '<input type="checkbox" name="form_id[]" value="' . absint( $form->ID ) . '" />';
	}

	/**
	 * Render the columns.
	 *
	 * @since 1.8.6
	 *
	 * @param WP_Post $form        CPT object as a form representation.
	 * @param string  $column_name Column Name.
	 *
	 * @return string
	 */
	public function column_default( $form, $column_name ) { // phpcs:ignore Generic.Metrics.CyclomaticComplexity

		switch ( $column_name ) {
			case 'id':
				$value = $form->ID;
				break;

			case 'shortcode':
				$value = '[wpforms id="' . $form->ID . '"]';

				if ( wpforms_is_form_template( $form->ID ) ) {
					$value = __( 'N/A', 'wpforms-lite' );
				}
				break;

			// This slug is not changed to 'date' for backward compatibility.
			case 'created':
				if ( gmdate( 'Ymd', strtotime( $form->post_date ) ) === gmdate( 'Ymd', strtotime( $form->post_modified ) ) ) {
					$value = wp_kses(
						sprintf( /* translators: %1$s - Post created date. */
							__( 'Created<br/>%1$s', 'wpforms-lite' ),
							esc_html( wpforms_datetime_format( $form->post_date ) )
						),
						[ 'br' => [] ]
					);
				} else {
					$value = wp_kses(
						sprintf( /* translators: %1$s - Post modified date. */
							__( 'Last Modified<br/>%1$s', 'wpforms-lite' ),
							esc_html( wpforms_datetime_format( $form->post_modified ) )
						),
						[ 'br' => [] ]
					);
				}
				break;

			case 'entries':
				$value = sprintf(
					'<span class="wpforms-lite-connect-entries-count"><a href="%s" data-title="%s">%s%d</a></span>',
					esc_url( admin_url( 'admin.php?page=wpforms-entries' ) ),
					esc_attr__( 'Entries are securely backed up in the cloud. Upgrade to restore.', 'wpforms-lite' ),
					'<svg viewBox="0 0 16 12"><path d="M10.8 2c1.475 0 2.675 1.175 2.775 2.625C15 5.125 16 6.475 16 8a3.6 3.6 0 0 1-3.6 3.6H4a3.98 3.98 0 0 1-4-4 4.001 4.001 0 0 1 2.475-3.7A4.424 4.424 0 0 1 6.8.4c1.4 0 2.625.675 3.425 1.675C10.4 2.025 10.6 2 10.8 2ZM4 10.4h8.4a2.4 2.4 0 0 0 0-4.8.632.632 0 0 0-.113.013.678.678 0 0 1-.112.012c.125-.25.225-.525.225-.825 0-.875-.725-1.6-1.6-1.6a1.566 1.566 0 0 0-1.05.4 3.192 3.192 0 0 0-2.95-2 3.206 3.206 0 0 0-3.2 3.2v.05A2.757 2.757 0 0 0 1.2 7.6 2.795 2.795 0 0 0 4 10.4Zm6.752-4.624a.64.64 0 1 0-.905-.905L6.857 7.86 5.38 6.352a.64.64 0 1 0-.914.896l1.93 1.97a.64.64 0 0 0 .91.004l3.446-3.446Z"/></svg>',
					LiteConnectIntegration::get_form_entries_count( $form->ID )
				);
				break;

			case 'modified':
				$value = get_post_modified_time( get_option( 'date_format' ), false, $form );
				break;

			case 'author':
				$value  = '';
				$author = get_userdata( $form->post_author );

				if ( ! $author ) {
					break;
				}

				$value         = $author->display_name;
				$user_edit_url = get_edit_user_link( $author->ID );

				if ( ! empty( $user_edit_url ) ) {
					$value = '<a href="' . esc_url( $user_edit_url ) . '">' . esc_html( $value ) . '</a>';
				}
				break;

			case 'php':
				$value = '<code style="display:block;font-size:11px;">if( function_exists( \'wpforms_get\' ) ){ wpforms_get( ' . $form->ID . ' ); }</code>';
				break;

			default:
				$value = '';
		}

		/**
		 * Filters the Forms Overview list table culumn value.
		 *
		 * @since 1.0.0
		 *
		 * @param string  $value       Column value.
		 * @param WP_Post $form        CPT object as a form representation.
		 * @param string  $column_name Column Name.
		 */
		return apply_filters( 'wpforms_overview_table_column_value', $value, $form, $column_name ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName
	}

	/**
	 * Filter the default list of hidden columns.
	 *
	 * @since 1.8.6
	 *
	 * @param string[]  $hidden Array of IDs of columns hidden by default.
	 * @param WP_Screen $screen WP_Screen object of the current screen.
	 *
	 * @return string[]
	 */
	public function default_hidden_columns( $hidden, $screen ) {

		if ( $screen->id !== 'toplevel_page_wpforms-overview' ) {
			return $hidden;
		}

		if ( Columns::has_selected_columns() ) {
			return [];
		}

		return [
			'tags',
			'author',
			Locator::COLUMN_NAME,
		];
	}

	/**
	 * Render the form name column with action links.
	 *
	 * @since 1.8.6
	 *
	 * @param WP_Post $form Form.
	 *
	 * @return string
	 */
	public function column_name( $form ) {

		$title = $this->get_column_name_title( $form );

		$states = _post_states( $form, false );

		$actions = $this->get_column_name_row_actions( $form );

		// Build the row action links and return the value.
		return $title . $states . $actions;
	}

	/**
	 * Render the form tags column.
	 *
	 * @since 1.8.6
	 *
	 * @param WP_Post $form Form.
	 *
	 * @return string
	 */
	public function column_tags( $form ) {

		return wpforms()->obj( 'forms_tags' )->column_tags( $form );
	}

	/**
	 * Get the form name HTML for the form name column.
	 *
	 * @since 1.8.6
	 *
	 * @param WP_Post $form Form object.
	 *
	 * @return string
	 */
	protected function get_column_name_title( $form ) {

		$title = ! empty( $form->post_title ) ? $form->post_title : $form->post_name;
		$name  = sprintf(
			'<span><strong>%s</strong></span>',
			esc_html( $title )
		);

		if ( $this->view === 'trash' ) {
			return $name;
		}

		if ( wpforms_current_user_can( 'view_form_single', $form->ID ) ) {
			$name = sprintf(
				'<a href="%s" title="%s" class="row-title" target="_blank" rel="noopener noreferrer"><strong>%s</strong></a>',
				esc_url( wpforms_get_form_preview_url( $form->ID ) ),
				esc_attr__( 'View preview', 'wpforms-lite' ),
				esc_html( $title )
			);
		}

		if ( wpforms_current_user_can( 'view_entries_form_single', $form->ID ) ) {
			$name = sprintf(
				'<a href="%s" title="%s"><strong>%s</strong></a>',
				esc_url(
					add_query_arg(
						[
							'view'    => 'list',
							'form_id' => $form->ID,
						],
						admin_url( 'admin.php?page=wpforms-entries' )
					)
				),
				esc_attr__( 'View entries', 'wpforms-lite' ),
				esc_html( $title )
			);
		}

		if ( wpforms_current_user_can( 'edit_form_single', $form->ID ) ) {
			$name = sprintf(
				'<a href="%s" title="%s"><strong>%s</strong></a>',
				esc_url(
					add_query_arg(
						[
							'view'    => 'fields',
							'form_id' => $form->ID,
						],
						admin_url( 'admin.php?page=wpforms-builder' )
					)
				),
				esc_attr__( 'Edit This Form', 'wpforms-lite' ),
				esc_html( $title )
			);
		}

		return $name;
	}

	/**
	 * Get the row actions HTML for the form name column.
	 *
	 * @since 1.8.6
	 *
	 * @param WP_Post $form Form object.
	 *
	 * @return string
	 */
	protected function get_column_name_row_actions( $form ) {

		// phpcs:disable WPForms.Comments.PHPDocHooks.RequiredHookDocumentation, WPForms.PHP.ValidateHooks.InvalidHookName
		/**
		 * Filters row action links on the 'All Forms' admin page.
		 *
		 * @since 1.0.0
		 *
		 * @param array   $row_actions An array of action links for a given form.
		 * @param WP_Post $form        Form object.
		 */
		return $this->row_actions( apply_filters( 'wpforms_overview_row_actions', [], $form ) );
		// phpcs:enable WPForms.Comments.PHPDocHooks.RequiredHookDocumentation, WPForms.PHP.ValidateHooks.InvalidHookName
	}

	/**
	 * Define bulk actions available for our table listing.
	 *
	 * @since 1.8.6
	 *
	 * @return array
	 */
	public function get_bulk_actions() {

		return wpforms()->obj( 'forms_bulk_actions' )->get_dropdown_items();
	}

	/**
	 * Generate the table navigation above or below the table.
	 *
	 * @since 1.8.6
	 *
	 * @param string $which The location of the table navigation: 'top' or 'bottom'.
	 */
	protected function display_tablenav( $which ) {

		// If there are some forms just call the parent method.
		if ( $this->has_items() ) {
			parent::display_tablenav( $which );

			return;
		}

		// Otherwise, display bulk actions menu and "0 items" on the right (pagination).
		?>
		<div class="tablenav <?php echo esc_attr( $which ); ?>">
			<div class="alignleft actions bulkactions">
				<?php $this->bulk_actions( $which ); ?>
			</div>
			<?php
			$this->extra_tablenav( $which );

			if ( $which === 'top' ) {
				$this->pagination( $which );
			}
			?>
			<br class="clear" />
		</div>
		<?php
	}

	/**
	 * Extra controls to be displayed between bulk actions and pagination.
	 *
	 * @since 1.8.6
	 *
	 * @param string $which The location of the table navigation: 'top' or 'bottom'.
	 */
	protected function extra_tablenav( $which ) {

		wpforms()->obj( 'forms_tags' )->extra_tablenav( $which, $this );
		wpforms()->obj( 'forms_views' )->extra_tablenav( $which );
	}

	/**
	 * Message to be displayed when there are no forms.
	 *
	 * @since 1.8.6
	 */
	public function no_items() {

		wpforms()->obj( 'forms_views' )->get_current_view() === 'templates' ?
			esc_html_e( 'No form templates found.', 'wpforms-lite' ) :
			esc_html_e( 'No forms found.', 'wpforms-lite' );
	}

	/**
	 * Fetch and set up the final data for the table.
	 *
	 * @since 1.8.6
	 */
	public function prepare_items() {

		// Set up the columns.
		$columns = $this->get_columns();

		// Hidden columns (none).
		$hidden = get_hidden_columns( $this->screen );

		// Define which columns can be sorted - form name, author, date.
		$sortable = [
			'id'      => [ 'ID', false ],
			'name'    => [ 'title', false ],
			'author'  => [ 'author', false ],
			'created' => [ 'date', false ],
		];

		// Set column headers.
		$this->_column_headers = [ $columns, $hidden, $sortable ];

		// phpcs:disable WordPress.Security.NonceVerification.Recommended
		$page     = $this->get_pagenum();
		$order    = isset( $_GET['order'] ) && $_GET['order'] === 'asc' ? 'ASC' : 'DESC';
		$orderby  = isset( $_GET['orderby'] ) ? sanitize_key( $_GET['orderby'] ) : 'ID';
		$per_page = $this->get_items_per_page( 'wpforms_forms_per_page', $this->per_page );
		// phpcs:enable WordPress.Security.NonceVerification.Recommended

		if ( $orderby === 'date' ) {
			$orderby = [
				'modified' => $order,
				'date'     => $order,
			];
		}

		$args = [
			'orderby'        => $orderby,
			'order'          => $order,
			'nopaging'       => false,
			'posts_per_page' => $per_page,
			'paged'          => $page,
			'no_found_rows'  => false,
			'post_status'    => 'publish',
		];

		/**
		 * Filters the `get_posts()` arguments while preparing items for the forms overview table.
		 *
		 * @since 1.7.3
		 *
		 * @param array $args Arguments array.
		 */
		$args = (array) apply_filters( 'wpforms_overview_table_prepare_items_args', $args ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName

		// Giddy up.
		$this->items = wpforms()->obj( 'form' )->get( '', $args );
		$per_page    = $args['posts_per_page'] ?? $this->get_items_per_page( 'wpforms_forms_per_page', $this->per_page );

		$this->update_count( $args );

		$count_current_view = empty( $this->count[ $this->view ] ) ? 0 : $this->count[ $this->view ];

		// Finalize pagination.
		$this->set_pagination_args(
			[
				'total_items' => $count_current_view,
				'per_page'    => $per_page,
				'total_pages' => (int) ceil( $count_current_view / $per_page ),
			]
		);

		$items    = is_array( $this->items ) ? $this->items : [];
		$form_ids = array_map(
			static function ( $form ) {

				return (int) $form->ID;
			},
			$items
		);

		/**
		 * Fires after the Forms Overview list table has prepared its items.
		 *
		 * Provides the IDs of all forms shown on the current page, allowing
		 * subscribers to bulk-fetch related per-form data in a single query
		 * (avoiding per-row N+1 queries during column rendering).
		 *
		 * @since 2.0.0
		 *
		 * @param int[] $form_ids IDs of forms on the current page.
		 */
		do_action( 'wpforms_admin_forms_list_table_prepare_items_after', $form_ids );
	}

	/**
	 * Calculate and update form counts.
	 *
	 * @since 1.8.6
	 *
	 * @param array $args Get forms arguments.
	 */
	private function update_count( $args ) {

		/**
		 * Allow counting forms filtered by a given search criteria.
		 *
		 * If result will not contain `all` key, count All Forms without filtering will be performed.
		 *
		 * @since 1.7.2
		 *
		 * @param array $count Contains counts of forms in different views.
		 * @param array $args  Arguments of the `get_posts`.
		 */
		$this->count = (array) apply_filters( 'wpforms_overview_table_update_count', [], $args ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName

		// We do not need to perform all forms count if we have the result already.
		if ( isset( $this->count['all'] ) ) {
			return;
		}

		// Count all forms.
		$this->count['all'] = wpforms_current_user_can( 'wpforms_view_others_forms' )
			? (int) wp_count_posts( 'wpforms' )->publish
			: (int) count_user_posts( get_current_user_id(), 'wpforms', true );

		/**
		 * Filters forms count data after counting all forms.
		 *
		 * This filter executes only if the result of `wpforms_overview_table_update_count` filter
		 * doesn't contain `all` key.
		 *
		 * @since 1.7.3
		 *
		 * @param array $count Contains counts of forms in different views.
		 * @param array $args  Arguments of the `get_posts`.
		 */
		$this->count = (array) apply_filters( 'wpforms_overview_table_update_count_all', $this->count, $args ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName
	}

	/**
	 * Display the pagination.
	 *
	 * @since 1.8.6
	 *
	 * @param string $which The location of the table pagination: 'top' or 'bottom'.
	 */
	protected function pagination( $which ) {

		if ( $this->has_items() ) {
			parent::pagination( $which );

			return;
		}

		printf(
			'<div class="tablenav-pages one-page">
				<span class="displaying-num">%s</span>
			</div>',
			esc_html__( '0 items', 'wpforms-lite' )
		);
	}

	/**
	 * Extending the `display_rows()` method in order to add hooks.
	 *
	 * @since 1.8.6
	 */
	public function display_rows() {

		/**
		 * Fires before displaying the table rows.
		 *
		 * @since 1.5.6.2
		 *
		 * @param ListTable $list_table_obj ListTable instance.
		 */
		do_action( 'wpforms_admin_overview_before_rows', $this ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName

		parent::display_rows();

		/**
		 * Fires after displaying the table rows.
		 *
		 * @since 1.5.6.2
		 *
		 * @param ListTable $list_table_obj ListTable instance.
		 */
		do_action( 'wpforms_admin_overview_after_rows', $this ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName
	}

	/**
	 * Forms search markup.
	 *
	 * @since 1.8.6
	 *
	 * @param string $text     The 'submit' button label.
	 * @param string $input_id ID attribute value for the search input field.
	 */
	public function search_box( $text, $input_id ) {

		wpforms()->obj( 'forms_search' )->search_box( $text, $input_id );
	}

	/**
	 * Get the list of views available on forms overview table.
	 *
	 * @since 1.8.6
	 */
	protected function get_views() {

		return wpforms()->obj( 'forms_views' )->get_views();
	}
}
