<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Form builder that contains magic.
 *
 * @since 1.0.0
 * @since 1.6.8 Form Builder Refresh.
 *                  - Added `deregister_common_wp_admin_styles()` method.
 *                  - Changed logic of enqueuing styles.
 */
class WPForms_Builder {

	/**
	 * Abort. Bail on proceeding to process the page.
	 *
	 * @since 1.7.3
	 *
	 * @var bool
	 */
	public $abort = false;

	/**
	 * The human-readable error message.
	 *
	 * @since 1.7.3
	 *
	 * @var string
	 */
	private $abort_message;

	/**
	 * One is the loneliest number that you'll ever do.
	 *
	 * @since 1.4.4.1
	 *
	 * @var object
	 */
	private static $instance;

	/**
	 * Current view (panel).
	 *
	 * @since 1.0.0
	 *
	 * @var string
	 */
	public $view;

	/**
	 * Available panels.
	 *
	 * @since 1.0.0
	 *
	 * @var array
	 */
	public $panels;

	/**
	 * Current form.
	 *
	 * @since 1.0.0
	 *
	 * @var WP_Post
	 */
	public $form;

	/**
	 * Form data and settings.
	 *
	 * @since 1.4.4.1
	 *
	 * @var array
	 */
	public $form_data;

	/**
	 * Current template information.
	 *
	 * @since 1.0.0
	 *
	 * @var array
	 */
	public $template;

	/**
	 * Main Instance.
	 *
	 * @since 1.4.4.1
	 *
	 * @return WPForms_Builder
	 */
	public static function instance() {

		if ( ! isset( self::$instance ) && ! ( self::$instance instanceof WPForms_Builder ) ) {

			self::$instance = new WPForms_Builder();

			add_action( 'admin_init', [ self::$instance, 'init' ], 10 );
			add_action( 'admin_init', [ self::$instance, 'deregister_common_wp_admin_styles' ], PHP_INT_MAX );
		}

		return self::$instance;
	}

	/**
	 * Determine if the user is viewing the builder, if so, party on.
	 *
	 * @since 1.0.0
	 */
	public function init() {

		// Only load if we are actually on the builder.
		if ( ! wpforms_is_admin_page( 'builder' ) ) {
			return;
		}

		// Load form if found.
		$form_id = isset( $_GET['form_id'] ) ? absint( $_GET['form_id'] ) : false; // phpcs:ignore WordPress.Security.NonceVerification.Recommended

		// Abort early if form ID is set, but the value is empty, 0 or any non-numeric value.
		if ( $form_id === 0 ) {
			wp_die( esc_html__( 'It looks like the form you are trying to access is no longer available.', 'wpforms-lite' ), 403 );
		}

		if ( $form_id ) {
			// Default view for with an existing form is fields panel.
			$this->view = isset( $_GET['view'] ) ? sanitize_key( $_GET['view'] ) : 'fields'; // phpcs:ignore WordPress.Security.NonceVerification.Recommended

		} else {
			// Default view for new form is the setup panel.
			$this->view = isset( $_GET['view'] ) ? sanitize_key( $_GET['view'] ) : 'setup'; // phpcs:ignore WordPress.Security.NonceVerification.Recommended

		}

		if ( $this->view === 'setup' && ! wpforms_current_user_can( 'create_forms' ) ) {
			wp_die( esc_html__( 'Sorry, you are not allowed to create new forms.', 'wpforms-lite' ), 403 );
		}

		if ( $this->view === 'fields' && ! wpforms_current_user_can( 'edit_form_single', $form_id ) ) {
			wp_die( esc_html__( 'Sorry, you are not allowed to edit this form.', 'wpforms-lite' ), 403 );
		}

		// Fetch form.
		$this->form = wpforms()->get( 'form' )->get( $form_id );

		if ( ! empty( $form_id ) && empty( $this->form ) ) {
			$this->abort_message = esc_html__( 'It looks like the form you are trying to access is no longer available.', 'wpforms-lite' );
			$this->abort         = true;
		}

		if ( ! empty( $this->form->post_status ) && $this->form->post_status === 'trash' ) {
			$this->abort_message = esc_html__( 'You can\'t edit this form because it\'s in the trash.', 'wpforms-lite' );
			$this->abort         = true;
		}

		// Retrieve form data.
		$this->form_data = $this->form ? wpforms_decode( $this->form->post_content ) : false;

		/**
		 * Active form template data filter.
		 *
		 * Allows developers to modify fields structure and form settings in the template of the current form.
		 *
		 * @since 1.6.8
		 *
		 * @param array $template Template data.
		 * @param array $form_id  Form ID.
		 */
		$this->template = apply_filters( 'wpforms_builder_template_active', [], $this->form );

		// Load builder panels.
		$this->load_panels();

		// Modify meta viewport tag if desktop view is forced.
		add_filter( 'admin_viewport_meta', [ $this, 'viewport_meta' ] );

		add_action( 'admin_head', [ $this, 'admin_head' ] );
		add_action( 'admin_enqueue_scripts', [ $this, 'enqueues' ], PHP_INT_MAX );
		add_action( 'admin_print_footer_scripts', [ $this, 'footer_scripts' ] );
		add_action( 'wpforms_admin_page', [ $this, 'output' ] );

		// Display Abort Message screen.
		add_action( 'wpforms_admin_page', [ $this, 'display_abort_message' ] );

		// Save the timestamp when the Builder has been opened for the first time.
		add_option( 'wpforms_builder_opened_date', time(), '', 'no' );

		/**
		 * Form Builder init action.
		 *
		 * Executes after all the form builder UI output.
		 * Intended to use in addons.
		 *
		 * @since 1.6.8
		 *
		 * @param string $view Current view.
		 */
		do_action( 'wpforms_builder_init', $this->view );

		add_filter( 'teeny_mce_plugins', [ $this, 'tinymce_buttons' ] );
	}

	/**
	 * Clear common wp-admin styles, keep only allowed.
	 *
	 * @since 1.6.8
	 */
	public function deregister_common_wp_admin_styles() {

		if ( ! wpforms_is_admin_page( 'builder' ) ) {
			return;
		}

		/**
		 * Filters the allowed common wp-admin styles.
		 *
		 * @since 1.6.8
		 *
		 * @param array $allowed_styles Styles allowed in the Form Builder.
		 */
		$allowed_styles = (array) apply_filters(
			'wpforms_admin_builder_allowed_common_wp_admin_styles',
			[
				'wp-editor',
				'wp-editor-font',
				'editor-buttons',
				'dashicons',
				'media-views',
				'imgareaselect',
				'wp-mediaelement',
				'mediaelement',
				'buttons',
				'admin-bar',
			]
		);

		wp_styles()->registered = array_intersect_key( wp_styles()->registered, array_flip( $allowed_styles ) );
	}

	/**
	 * Define TinyMCE buttons to use with our fancy editor instances.
	 *
	 * @since 1.0.3
	 *
	 * @param array $buttons List of default buttons.
	 *
	 * @return array
	 */
	public function tinymce_buttons( $buttons ) {

		return [ 'colorpicker', 'lists', 'wordpress', 'wpeditimage', 'wplink' ];
	}

	/**
	 * Load panels.
	 *
	 * @since 1.0.0
	 */
	public function load_panels() {

		// Base class and functions.
		require_once WPFORMS_PLUGIN_DIR . 'includes/admin/builder/panels/class-base.php';

		/**
		 * Form Builder panels slugs array filter.
		 *
		 * Allows developers to disable loading of some builder panels.
		 *
		 * @since 1.0.0
		 *
		 * @param array $panels Panels slugs array.
		 */
		$this->panels = apply_filters(
			'wpforms_builder_panels',
			[
				'setup',
				'fields',
				'settings',
				'providers',
				'payments',
				'revisions',
			]
		);

		foreach ( $this->panels as $panel ) {
			$panel    = sanitize_file_name( $panel );
			$file     = WPFORMS_PLUGIN_DIR . "includes/admin/builder/panels/class-{$panel}.php";
			$file_pro = WPFORMS_PLUGIN_DIR . "pro/includes/admin/builder/panels/class-{$panel}.php";

			if ( file_exists( $file ) ) {
				require_once $file;
			} elseif ( file_exists( $file_pro ) ) {
				require_once $file_pro;
			}
		}
	}

	/**
	 * Admin head area inside the form builder.
	 *
	 * @since 1.4.6
	 */
	public function admin_head() {

		// Force hide admin side menu.
		echo '<style>#adminmenumain { display: none !important }</style>';

		do_action( 'wpforms_builder_admin_head', $this->view );
	}

	/**
	 * Enqueue assets for the builder.
	 *
	 * @since 1.0.0
	 * @since 1.6.8 All the panel's stylesheets restructured and moved here.
	 */
	public function enqueues() {

		// Remove conflicting scripts.
		wp_deregister_script( 'serialize-object' );
		wp_deregister_script( 'wpclef-ajax-settings' );

		do_action( 'wpforms_builder_enqueues_before', $this->view );

		$min = wpforms_get_min_suffix();

		/*
		 * Builder CSS.
		 */
		$builder_styles = [
			'overlay',
			'basic',
			'third-party',
			'alerts',
			'ui-general',
			'panels',
			'subsystems',
			'fields',
			'fields-types',
		];

		foreach ( $builder_styles as $style ) {
			wp_enqueue_style(
				$style === 'basic' ? 'wpforms-builder' : 'wpforms-builder-' . $style,
				WPFORMS_PLUGIN_URL . "assets/css/builder/builder-{$style}{$min}.css",
				[],
				WPFORMS_VERSION
			);
		}

		/*
		 * Third-party CSS.
		 */
		wp_enqueue_style(
			'wpforms-font-awesome',
			WPFORMS_PLUGIN_URL . 'assets/lib/font-awesome/font-awesome.min.css',
			null,
			'4.7.0'
		);

		wp_enqueue_style(
			'tooltipster',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.tooltipster/jquery.tooltipster.min.css',
			null,
			'4.2.6'
		);

		wp_enqueue_style(
			'jquery-confirm',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.confirm/jquery-confirm.min.css',
			null,
			'3.3.4'
		);

		wp_enqueue_style(
			'minicolors',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.minicolors/jquery.minicolors.min.css',
			null,
			'2.2.6'
		);

		// Remove TinyMCE editor styles from third-party themes and plugins.
		remove_editor_styles();

		/*
		 * JavaScript.
		 */
		wp_enqueue_media();
		wp_enqueue_script( 'jquery-ui-sortable' );
		wp_enqueue_script( 'jquery-ui-draggable' );
		wp_enqueue_script( 'wp-util' );

		wp_enqueue_script(
			'tooltipster',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.tooltipster/jquery.tooltipster.min.js',
			[ 'jquery' ],
			'4.2.6'
		);

		wp_enqueue_script(
			'jquery-confirm',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.confirm/jquery-confirm.min.js',
			[ 'jquery' ],
			'3.3.4'
		);

		wp_enqueue_script(
			'insert-at-caret',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.insert-at-caret.min.js',
			[ 'jquery' ],
			'1.1.4'
		);

		wp_enqueue_script(
			'minicolors',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.minicolors/jquery.minicolors.min.js',
			[ 'jquery' ],
			'2.2.6'
		);

		wp_enqueue_script(
			'conditionals',
			WPFORMS_PLUGIN_URL . 'assets/lib/jquery.conditionals.min.js',
			[ 'jquery' ],
			'1.0.1'
		);

		wp_enqueue_script(
			'choicesjs',
			WPFORMS_PLUGIN_URL . 'assets/lib/choices.min.js',
			[],
			'9.0.1'
		);

		wp_enqueue_script(
			'listjs',
			WPFORMS_PLUGIN_URL . 'assets/lib/list.min.js',
			[ 'jquery' ],
			'2.3.0'
		);

		wp_enqueue_script(
			'dom-purify',
			WPFORMS_PLUGIN_URL . 'assets/lib/purify.min.js',
			[],
			'3.0.6'
		);

		if ( wp_is_mobile() ) {
			wp_enqueue_script( 'jquery-touch-punch' );
		}

		wp_enqueue_script(
			'wpforms-utils',
			WPFORMS_PLUGIN_URL . "assets/js/admin-utils{$min}.js",
			[ 'jquery', 'dom-purify' ],
			WPFORMS_VERSION
		);

		wp_enqueue_script(
			'wpforms-generic-utils',
			WPFORMS_PLUGIN_URL . "assets/js/utils{$min}.js",
			[ 'jquery' ],
			WPFORMS_VERSION
		);

		wp_enqueue_script(
			'wpforms-builder-choicesjs',
			WPFORMS_PLUGIN_URL . "assets/js/admin/builder/wpforms-choicesjs{$min}.js",
			[ 'jquery', 'choicesjs' ],
			WPFORMS_VERSION
		);

		wp_enqueue_script(
			'wpforms-admin-builder-dropdown-list',
			WPFORMS_PLUGIN_URL . "assets/js/components/admin/builder/dropdown-list{$min}.js",
			[ 'jquery' ],
			WPFORMS_VERSION,
			true
		);

		wp_enqueue_script(
			'wpforms-builder',
			WPFORMS_PLUGIN_URL . "assets/js/admin-builder{$min}.js",
			[
				'wpforms-utils',
				'wpforms-admin-builder-templates',
				'jquery-ui-sortable',
				'jquery-ui-draggable',
				'tooltipster',
				'jquery-confirm',
				'choicesjs',
				'wpforms-builder-choicesjs',
			],
			WPFORMS_VERSION
		);

		wp_enqueue_script(
			'wpforms-admin-builder-templates',
			WPFORMS_PLUGIN_URL . "assets/js/components/admin/builder/templates{$min}.js",
			[ 'wp-util' ],
			WPFORMS_VERSION,
			true
		);

		wp_localize_script(
			'wpforms-builder',
			'wpforms_builder',
			$this->get_localized_strings()
		);

		/**
		 * Form Builder enqueues action.
		 *
		 * Executes after all the form builder assets were enqueued.
		 * Intended to use in addons.
		 *
		 * @since 1.0.0
		 *
		 * @param string $view Current view.
		 */
		do_action( 'wpforms_builder_enqueues', $this->view );
	}

	/**
	 * Get localized strings.
	 *
	 * @since 1.6.8
	 *
	 * @return array
	 */
	private function get_localized_strings() {

		/**
		 * Smart Tags.
		 *
		 * @since 1.6.7
		 *
		 * @param array $smart_tags Array of smart tags.
		 */
		$smart_tags = apply_filters( 'wpforms_builder_enqueues_smart_tags', wpforms()->get( 'smart_tags' )->get_smart_tags() );

		$strings = [
			'and'                                     => esc_html__( 'And', 'wpforms-lite' ),
			'ajax_url'                                => admin_url( 'admin-ajax.php' ),
			'bulk_add_button'                         => esc_html__( 'Add New Choices', 'wpforms-lite' ),
			'bulk_add_show'                           => esc_html__( 'Bulk Add', 'wpforms-lite' ),
			'are_you_sure_to_close'                   => esc_html__( 'Are you sure you want to leave? You have unsaved changes', 'wpforms-lite' ),
			'bulk_add_hide'                           => esc_html__( 'Hide Bulk Add', 'wpforms-lite' ),
			'bulk_add_heading'                        => esc_html__( 'Add Choices (one per line)', 'wpforms-lite' ),
			'bulk_add_placeholder'                    => esc_html__( "Blue\nRed\nGreen", 'wpforms-lite' ),
			'bulk_add_presets_show'                   => esc_html__( 'Show presets', 'wpforms-lite' ),
			'bulk_add_presets_hide'                   => esc_html__( 'Hide presets', 'wpforms-lite' ),
			'date_select_day'                         => 'DD',
			'date_select_month'                       => 'MM',
			'debug'                                   => wpforms_debug(),
			'dynamic_choices'                         => [
				'limit_message' => sprintf( /* translators: %1$s - data source name (e.g. Categories, Posts), %2$s - data source type (e.g. post type, taxonomy), %3$s - display limit, %4$s - total number of items. */
					esc_html__( 'The %1$s %2$s contains over %3$s items (%4$s). This may make the field difficult for your visitors to use and/or cause the form to be slow.', 'wpforms-lite' ),
					'{source}',
					'{type}',
					'{limit}',
					'{total}'
				),
				'empty_message' => sprintf( /* translators: %1$s - data source name (e.g. Categories, Posts), %2$s - data source type (e.g. post type, taxonomy). */
					esc_html__( 'This field will not be displayed in your form since there are no %2$s belonging to %1$s.', 'wpforms-lite' ),
					'{source}',
					'{type}'
				),
				'entities'      => [
					'post_type' => esc_html__( 'posts', 'wpforms-lite' ),
					'taxonomy'  => esc_html__( 'terms', 'wpforms-lite' ),
				],
			],
			'cancel'                                  => esc_html__( 'Cancel', 'wpforms-lite' ),
			'ok'                                      => esc_html__( 'OK', 'wpforms-lite' ),
			'close'                                   => esc_html__( 'Close', 'wpforms-lite' ),
			'conditionals_change'                     => esc_html__( 'Due to form changes, conditional logic rules will be removed or updated:', 'wpforms-lite' ),
			'conditionals_disable'                    => esc_html__( 'Are you sure you want to disable conditional logic? This will remove the rules for this field or setting.', 'wpforms-lite' ),
			'field'                                   => esc_html__( 'Field', 'wpforms-lite' ),
			'field_locked'                            => esc_html__( 'Field Locked', 'wpforms-lite' ),
			'field_locked_msg'                        => esc_html__( 'This field cannot be deleted or duplicated.', 'wpforms-lite' ),
			'field_locked_no_delete_msg'              => esc_html__( 'This field cannot be deleted.', 'wpforms-lite' ),
			'field_locked_no_duplicate_msg'           => esc_html__( 'This field cannot be duplicated.', 'wpforms-lite' ),
			'fields_available'                        => esc_html__( 'Available Fields', 'wpforms-lite' ),
			'fields_unavailable'                      => esc_html__( 'No fields available', 'wpforms-lite' ),
			'heads_up'                                => esc_html__( 'Heads up!', 'wpforms-lite' ),
			'image_placeholder'                       => WPFORMS_PLUGIN_URL . 'assets/images/builder/placeholder-200x125.svg',
			'nonce'                                   => wp_create_nonce( 'wpforms-builder' ),
			'admin_nonce'                             => wp_create_nonce( 'wpforms-admin' ),
			'no_email_fields'                         => esc_html__( 'No email fields', 'wpforms-lite' ),
			'notification_delete'                     => esc_html__( 'Are you sure you want to delete this notification?', 'wpforms-lite' ),
			'notification_prompt'                     => esc_html__( 'Enter a notification name', 'wpforms-lite' ),
			'notification_ph'                         => esc_html__( 'Eg: User Confirmation', 'wpforms-lite' ),
			'notification_error'                      => esc_html__( 'You must provide a notification name', 'wpforms-lite' ),
			'notification_def_name'                   => esc_html__( 'Default Notification', 'wpforms-lite' ),
			'confirmation_delete'                     => esc_html__( 'Are you sure you want to delete this confirmation?', 'wpforms-lite' ),
			'confirmation_prompt'                     => esc_html__( 'Enter a confirmation name', 'wpforms-lite' ),
			'confirmation_ph'                         => esc_html__( 'Eg: Alternative Confirmation', 'wpforms-lite' ),
			'confirmation_error'                      => esc_html__( 'You must provide a confirmation name', 'wpforms-lite' ),
			'confirmation_def_name'                   => esc_html__( 'Default Confirmation', 'wpforms-lite' ),
			'save'                                    => esc_html__( 'Save', 'wpforms-lite' ),
			'saving'                                  => esc_html__( 'Saving', 'wpforms-lite' ),
			'saved'                                   => esc_html__( 'Saved!', 'wpforms-lite' ),
			'save_exit'                               => esc_html__( 'Save and Exit', 'wpforms-lite' ),
			'save_embed'                              => esc_html__( 'Save and Embed', 'wpforms-lite' ),
			'saved_state'                             => '',
			'layout_selector_show'                    => esc_html__( 'Show Layouts', 'wpforms-lite' ),
			'layout_selector_hide'                    => esc_html__( 'Hide Layouts', 'wpforms-lite' ),
			'layout_selector_layout'                  => esc_html__( 'Select your layout', 'wpforms-lite' ),
			'layout_selector_column'                  => esc_html__( 'Select your column', 'wpforms-lite' ),
			'loading'                                 => esc_html__( 'Loading', 'wpforms-lite' ),
			'template_name'                           => ! empty( $this->template['name'] ) ? $this->template['name'] : '',
			'template_slug'                           => ! empty( $this->template['slug'] ) ? $this->template['slug'] : '',
			'template_modal_title'                    => ! empty( $this->template['modal']['title'] ) ? $this->template['modal']['title'] : '',
			'template_modal_msg'                      => ! empty( $this->template['modal']['message'] ) ? $this->template['modal']['message'] : '',
			'template_modal_display'                  => ! empty( $this->template['modal_display'] ) ? $this->template['modal_display'] : '',
			'template_select'                         => esc_html__( 'Use Template', 'wpforms-lite' ),
			'template_confirm'                        => esc_html__( 'Changing templates on an existing form will DELETE existing form fields. Are you sure you want apply the new template?', 'wpforms-lite' ),
			'use_simple_contact_form'                 => esc_html__( 'Use Simple Contact Form Template', 'wpforms-lite' ),
			'embed'                                   => esc_html__( 'Embed', 'wpforms-lite' ),
			'exit'                                    => esc_html__( 'Exit', 'wpforms-lite' ),
			'exit_url'                                => wpforms_current_user_can( 'view_forms' ) ? admin_url( 'admin.php?page=wpforms-overview' ) : admin_url(),
			'exit_confirm'                            => esc_html__( 'Your form contains unsaved changes. Would you like to save your changes first.', 'wpforms-lite' ),
			'delete_confirm'                          => esc_html__( 'Are you sure you want to delete this field?', 'wpforms-lite' ),
			'delete_choice_confirm'                   => esc_html__( 'Are you sure you want to delete this choice?', 'wpforms-lite' ),
			'duplicate_confirm'                       => esc_html__( 'Are you sure you want to duplicate this field?', 'wpforms-lite' ),
			'duplicate_copy'                          => esc_html__( '(copy)', 'wpforms-lite' ),
			'error_title'                             => esc_html__( 'Please enter a form name.', 'wpforms-lite' ),
			'error_choice'                            => esc_html__( 'This item must contain at least one choice.', 'wpforms-lite' ),
			'off'                                     => esc_html__( 'Off', 'wpforms-lite' ),
			'on'                                      => esc_html__( 'On', 'wpforms-lite' ),
			'or'                                      => esc_html__( 'or', 'wpforms-lite' ),
			'other'                                   => esc_html__( 'Other', 'wpforms-lite' ),
			'operator_is'                             => esc_html__( 'is', 'wpforms-lite' ),
			'operator_is_not'                         => esc_html__( 'is not', 'wpforms-lite' ),
			'operator_empty'                          => esc_html__( 'empty', 'wpforms-lite' ),
			'operator_not_empty'                      => esc_html__( 'not empty', 'wpforms-lite' ),
			'operator_contains'                       => esc_html__( 'contains', 'wpforms-lite' ),
			'operator_not_contains'                   => esc_html__( 'does not contain', 'wpforms-lite' ),
			'operator_starts'                         => esc_html__( 'starts with', 'wpforms-lite' ),
			'operator_ends'                           => esc_html__( 'ends with', 'wpforms-lite' ),
			'operator_greater_than'                   => esc_html__( 'greater than', 'wpforms-lite' ),
			'operator_less_than'                      => esc_html__( 'less than', 'wpforms-lite' ),
			'payments_entries_off'                    => esc_html__( 'Entry storage is currently disabled, but is required to accept payments. Please enable in your form settings.', 'wpforms-lite' ),
			'payments_on_entries_off'                 => esc_html__( 'This form is currently accepting payments. Entry storage is required to accept payments. To disable entry storage, please first disable payments.', 'wpforms-lite' ),
			'previous'                                => esc_html__( 'Previous', 'wpforms-lite' ),
			'provider_required_flds'                  => sprintf( /* translators: %s - marketing integration name. */
				esc_html__( "In order to complete your form's %s integration, please check that the dropdowns for all required (*) List Fields have been filled out.", 'wpforms-lite' ),
				'{provider}'
			),
			'rule_create'                             => esc_html__( 'Create new rule', 'wpforms-lite' ),
			'rule_create_group'                       => esc_html__( 'Add New Group', 'wpforms-lite' ),
			'rule_delete'                             => esc_html__( 'Delete rule', 'wpforms-lite' ),
			'smart_tags'                              => $smart_tags,
			'smart_tags_disabled_for_fields'          => [ 'entry_id' ],
			'smart_tags_show'                         => esc_html__( 'Show Smart Tags', 'wpforms-lite' ),
			'smart_tags_hide'                         => esc_html__( 'Hide Smart Tags', 'wpforms-lite' ),
			'select_field'                            => esc_html__( '--- Select Field ---', 'wpforms-lite' ),
			'select_choice'                           => esc_html__( '--- Select Choice ---', 'wpforms-lite' ),
			'upload_image_title'                      => esc_html__( 'Upload or Choose Your Image', 'wpforms-lite' ),
			'upload_image_button'                     => esc_html__( 'Use Image', 'wpforms-lite' ),
			'upload_image_remove'                     => esc_html__( 'Remove Image', 'wpforms-lite' ),
			'provider_add_new_acc_btn'                => esc_html__( 'Add', 'wpforms-lite' ),
			'pro'                                     => wpforms()->is_pro(),
			'is_gutenberg'                            => version_compare( get_bloginfo( 'version' ), '5.0', '>=' ) && ! is_plugin_active( 'classic-editor/classic-editor.php' ),
			'cl_fields_supported'                     => wpforms_get_conditional_logic_form_fields_supported(),
			'redirect_url_field_error'                => esc_html__( 'You should enter a valid absolute address to the Confirmation Redirect URL field.', 'wpforms-lite' ),
			'add_custom_value_label'                  => esc_html__( 'Add Custom Value', 'wpforms-lite' ),
			'choice_empty_label_tpl'                  => sprintf( /* translators: %s - choice number. */
				esc_html__( 'Choice %s', 'wpforms-lite' ),
				'{number}'
			),
			'error_save_form'                         => esc_html__( 'Something went wrong while saving the form. Please reload the page and try again.', 'wpforms-lite' ),
			'error_contact_support'                   => esc_html__( 'Please contact the plugin support team if this behavior persists.', 'wpforms-lite' ),
			'ms_win_css_url'                          => WPFORMS_PLUGIN_URL . 'assets/css/builder/builder-ms-win.css',
			'error_select_template'                   => esc_html__( 'Please close the form builder and try again. If the error persists, contact our support team.', 'wpforms-lite' ),
			'blank_form'                              => esc_html__( 'Blank Form', 'wpforms-lite' ),
			'something_went_wrong'                    => esc_html__( 'Something went wrong', 'wpforms-lite' ),
			'field_cannot_be_reordered'               => esc_html__( 'This field cannot be moved.', 'wpforms-lite' ),
			'empty_label'                             => esc_html__( 'Empty Label', 'wpforms-lite' ),
			'no_pages_found'                          => esc_html__( 'No results found', 'wpforms-lite' ),
			'number_slider_error_valid_default_value' => sprintf( /* translators: %1$s - from value %2$s - to value. */
				esc_html__( 'Please enter a valid value or change the Increment. The nearest valid values are %1$s and %2$s.', 'wpforms-lite' ),
				'{from}',
				'{to}'
			),
		];

		$strings = $this->add_localized_currencies( $strings );

		$strings['disable_entries'] = sprintf(
			wp_kses( /* translators: %s - link to the WPForms.com doc article. */
				__( 'Disabling entry storage for this form will completely prevent any new submissions from getting saved to your site. If you still intend to keep a record of entries through notification emails, then please <a href="%s" target="_blank" rel="noopener noreferrer">test your form</a> to ensure emails send reliably.', 'wpforms-lite' ),
				[
					'a' => [
						'href'   => [],
						'rel'    => [],
						'target' => [],
					],
				]
			),
			esc_url(
				wpforms_utm_link(
					'https://wpforms.com/docs/how-to-properly-test-your-wordpress-forms-before-launching-checklist/',
					'Builder Notifications',
					'Testing A Form Documentation'
				)
			)
		);

		$strings['akismet_not_installed'] = sprintf(
			wp_kses( /* translators: %1$s - link to the plugin search page, %2$s - link to the WPForms.com doc article. */
				__( 'This feature cannot be used at this time because the Akismet plugin <a href="%1$s" target="_blank" rel="noopener noreferrer">has not been installed</a>. For information on how to use this feature please <a href="%2$s" target="_blank" rel="noopener noreferrer">refer to our documentation</a>.', 'wpforms-lite' ),
				[
					'a' => [
						'href'   => [],
						'rel'    => [],
						'target' => [],
					],
				]
			),
			esc_url( admin_url( 'plugin-install.php' ) ),
			esc_url(
				wpforms_utm_link(
					'https://wpforms.com/docs/setting-up-akismet-anti-spam-protection/',
					'Builder Settings',
					'Akismet Documentation'
				)
			)
		);

		$strings['akismet_not_activated'] = sprintf(
			wp_kses( /* translators: %1$s - link to the plugins page, %2$s - link to the WPForms.com doc article. */
				__( 'This feature cannot be used at this time because the Akismet plugin <a href="%1$s" target="_blank" rel="noopener noreferrer">has not been activated</a>. For information on how to use this feature please <a href="%2$s" target="_blank" rel="noopener noreferrer">refer to our documentation</a>.', 'wpforms-lite' ),
				[
					'a' => [
						'href'   => [],
						'rel'    => [],
						'target' => [],
					],
				]
			),
			esc_url( admin_url( 'plugins.php' ) ),
			esc_url(
				wpforms_utm_link(
					'https://wpforms.com/docs/setting-up-akismet-anti-spam-protection/',
					'Builder Settings',
					'Akismet Documentation'
				)
			)
		);

		$strings['akismet_no_api_key'] = sprintf(
			wp_kses( /* translators: %1$s - link to the Akismet settings page, %2$s - link to the WPForms.com doc article. */
				__( 'This feature cannot be used at this time because the Akismet plugin <a href="%1$s" target="_blank" rel="noopener noreferrer">has not been properly configured</a>. For information on how to use this feature please <a href="%2$s" target="_blank" rel="noopener noreferrer">refer to our documentation</a>.', 'wpforms-lite' ),
				[
					'a' => [
						'href'   => [],
						'rel'    => [],
						'target' => [],
					],
				]
			),
			esc_url( admin_url( 'options-general.php?page=akismet-key-config&view=start' ) ),
			esc_url(
				wpforms_utm_link(
					'https://wpforms.com/docs/setting-up-akismet-anti-spam-protection/',
					'Builder Settings',
					'Akismet Documentation'
				)
			)
		);

		$strings = apply_filters( 'wpforms_builder_strings', $strings, $this->form );

		// phpcs:disable WordPress.Security.NonceVerification.Recommended
		if ( ! empty( $_GET['form_id'] ) ) {
			$form_id = (int) $_GET['form_id'];

			$strings['preview_url'] = esc_url( add_query_arg( 'new_window', 1, wpforms_get_form_preview_url( $form_id ) ) );
			$strings['entries_url'] = esc_url( admin_url( 'admin.php?page=wpforms-entries&view=list&form_id=' . $form_id ) );
		}
		// phpcs:enable

		return $strings;
	}

	/**
	 * Footer JavaScript.
	 *
	 * @since 1.3.7
	 */
	public function footer_scripts() {

		$countries        = wpforms_countries();
		$countries_postal = array_keys( $countries );
		$countries        = array_values( $countries );

		sort( $countries_postal );
		sort( $countries );

		$choices = [
			'countries'        => [
				'name'    => esc_html__( 'Countries', 'wpforms-lite' ),
				'choices' => $countries,
			],
			'countries_postal' => [
				'name'    => esc_html__( 'Countries Postal Code', 'wpforms-lite' ),
				'choices' => $countries_postal,
			],
			'states'           => [
				'name'    => esc_html__( 'States', 'wpforms-lite' ),
				'choices' => array_values( wpforms_us_states() ),
			],
			'states_postal'    => [
				'name'    => esc_html__( 'States Postal Code', 'wpforms-lite' ),
				'choices' => array_keys( wpforms_us_states() ),
			],
			'months'           => [
				'name'    => esc_html__( 'Months', 'wpforms-lite' ),
				'choices' => array_values( wpforms_months() ),
			],
			'days'             => [
				'name'    => esc_html__( 'Days', 'wpforms-lite' ),
				'choices' => array_values( wpforms_days() ),
			],
		];

		// phpcs:disable WPForms.Comments.ParamTagHooks.InvalidParamTagsQuantity
		/**
		 * Choices presets array filter.
		 *
		 * Allows developers to edit the choices presets used in all choices-based fields.
		 *
		 * @since 1.3.7
		 *
		 * @param array $choices {
		 *    Choices presets is the [ `slug` => `preset`, ... ] array.
		 *
		 *    @param array $preset {
		 *        Each preset data is the array with two elements:
		 *
		 *        @param string $name    Name of the preset
		 *        @param array  $choices Choices array.
		 *    }
		 *    ...
		 * }
		 */
		$choices = apply_filters( 'wpforms_builder_preset_choices', $choices );
		// phpcs:enable WPForms.Comments.ParamTagHooks.InvalidParamTagsQuantity

		echo '<script type="text/javascript">wpforms_preset_choices=' . wp_json_encode( $choices ) . '</script>';

		do_action( 'wpforms_builder_print_footer_scripts' );
	}

	/**
	 * Load the appropriate files to build the page.
	 *
	 * @since 1.0.0
	 */
	public function output() {

		if ( $this->abort ) {
			return;
		}

		/**
		 * Allow developers to disable Form Builder output.
		 *
		 * @since 1.5.8.2
		 *
		 * @param bool $is_enabled Is builder output enabled? Defaults to `true`.
		 */
		if ( ! (bool) apply_filters( 'wpforms_builder_output', true ) ) {
			return;
		}

		$form_id         = $this->form ? absint( $this->form->ID ) : '';
		$field_id        = ! empty( $this->form_data['field_id'] ) ? $this->form_data['field_id'] : '';
		$revision        = wpforms()->get( 'revisions' )->get_revision();
		$preview_url     = wpforms_get_form_preview_url( $form_id, true );
		$allowed_caps    = [ 'edit_posts', 'edit_other_posts', 'edit_private_posts', 'edit_published_posts', 'edit_pages', 'edit_other_pages', 'edit_published_pages', 'edit_private_pages' ];
		$can_embed       = array_filter( $allowed_caps, 'current_user_can' );
		$preview_classes = [ 'wpforms-btn', 'wpforms-btn-toolbar', 'wpforms-btn-light-grey' ];
		$builder_classes = [ 'wpforms-admin-page' ];

		if ( ! $can_embed ) {
			$preview_classes[] = 'wpforms-alone';
		}

		$revision_id = null;

		if ( $revision ) {
			$revision_id       = $revision->ID;
			$builder_classes[] = 'wpforms-is-revision';
		}

		if ( $this->form && wp_revisions_enabled( $this->form ) ) {
			$builder_classes[] = 'wpforms-revisions-enabled';
		}

		/**
		 * Allow to modify builder container classes.
		 *
		 * @since 1.7.9
		 *
		 * @param array $classes   List of classes.
		 * @param array $form_data Form data and settings.
		 */
		$builder_classes = (array) apply_filters( 'wpforms_builder_output_classes', $builder_classes, $this->form_data );

		/**
		 * Allow developers to add content before the top toolbar in the Form Builder.
		 *
		 * @since 1.7.4
		 *
		 * @param string $content Content before toolbar. Defaults to empty string.
		 */
		$before_toolbar = apply_filters( 'wpforms_builder_output_before_toolbar', '' );
		?>

		<div id="wpforms-builder" class="<?php echo wpforms_sanitize_classes( $builder_classes, true ); ?>">

			<?php
			// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
			echo wpforms_render( 'builder/fullscreen/ie-notice' );

			// phpcs:ignore WordPress.Security.NonceVerification.Recommended
			if ( empty( $_GET['force_desktop_view'] ) ) {
				// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
				echo wpforms_render( 'builder/fullscreen/mobile-notice' );
			}
			?>

			<div id="wpforms-builder-overlay">
				<div class="wpforms-builder-overlay-content">
					<i class="spinner"></i>
					<i class="avatar"></i>
				</div>
			</div>

			<form
					name="wpforms-builder" id="wpforms-builder-form" method="post"
					data-id="<?php echo esc_attr( $form_id ); ?>"
					data-revision="<?php echo esc_attr( $revision_id ); ?>"
			>

				<input type="hidden" name="id" value="<?php echo esc_attr( $form_id ); ?>">
				<input type="hidden" value="<?php echo absint( $field_id ); ?>" name="field_id" id="wpforms-field-id">

				<?php echo $before_toolbar; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>

				<!-- Toolbar -->
				<div class="wpforms-toolbar">

					<div class="wpforms-left">
						<img src="<?php echo esc_url( WPFORMS_PLUGIN_URL . 'assets/images/sullie-alt.png' ); ?>" alt="<?php esc_attr_e( 'Sullie the WPForms mascot', 'wpforms-lite' ); ?>">
					</div>

					<div class="wpforms-center">

						<?php if ( $this->form ) : ?>

							<?php esc_html_e( 'Now editing', 'wpforms-lite' ); ?>
							<span class="wpforms-center-form-name wpforms-form-name">
								<?php echo esc_html( isset( $this->form_data['settings']['form_title'] ) ? $this->form_data['settings']['form_title'] : $this->form->post_title ); ?>
							</span>

						<?php endif; ?>

					</div>

					<div class="wpforms-right">

						<button id="wpforms-help"
							class="wpforms-btn wpforms-btn-toolbar wpforms-btn-light-grey"
							title="<?php esc_attr_e( 'Help Ctrl+H', 'wpforms-lite' ); ?>">
								<i class="fa fa-question-circle-o"></i><span><?php esc_html_e( 'Help', 'wpforms-lite' ); ?></span>
						</button>

						<?php if ( $this->form ) : ?>

							<?php if ( ! $revision ) : ?>
								<a href="<?php echo esc_url( $preview_url ); ?>"
									id="wpforms-preview-btn"
									class="<?php echo wpforms_sanitize_classes( $preview_classes, true ); ?>"
									title="<?php esc_attr_e( 'Preview Form Ctrl+P', 'wpforms-lite' ); ?>"
									target="_blank"
									rel="noopener noreferrer">
									<i class="fa fa-eye"></i><span class="text"><?php esc_html_e( 'Preview', 'wpforms-lite' ); ?></span>
								</a>
							<?php endif; ?>

							<?php if ( $can_embed && ! $revision ) : ?>
								<button id="wpforms-embed"
									class="wpforms-btn wpforms-btn-toolbar wpforms-btn-light-grey"
									title="<?php esc_attr_e( 'Embed Form Ctrl+B', 'wpforms-lite' ); ?>">
										<i class="fa fa-code"></i><span class="text"><?php esc_html_e( 'Embed', 'wpforms-lite' ); ?></span>
								</button>
							<?php endif; ?>

							<button id="wpforms-save"
								class="wpforms-btn wpforms-btn-toolbar wpforms-btn-orange"
								title="<?php esc_attr_e( 'Save Form Ctrl+S', 'wpforms-lite' ); ?>">
									<i class="fa fa-check"></i><i class="wpforms-loading-spinner wpforms-loading-white wpforms-loading-inline wpforms-hidden"></i><span class="text"><?php esc_html_e( 'Save', 'wpforms-lite' ); ?></span>
							</button>

						<?php endif; ?>

						<button id="wpforms-exit" title="<?php esc_attr_e( 'Exit Ctrl+Q', 'wpforms-lite' ); ?>">
							<i class="fa fa-times"></i>
						</button>

					</div>

				</div>

				<!-- Panel toggle buttons. -->
				<div class="wpforms-panels-toggle" id="wpforms-panels-toggle">

					<?php
					/**
					 * Outputs the buttons to toggle between Form Builder panels.
					 *
					 * @since 1.0.0
					 *
					 * @param WP_Post $form The form object.
					 * @param string  $view Current view (panel) name.
					 */
					do_action( 'wpforms_builder_panel_buttons', $this->form, $this->view );
					?>

				</div>

				<div class="wpforms-panels">

					<?php
					/**
					 * Outputs the contents of Form Builder panels.
					 *
					 * @since 1.0.0
					 *
					 * @param WP_Post $form The form object.
					 * @param string  $view Current view (panel) name.
					 */
					do_action( 'wpforms_builder_panels', $this->form, $this->view );
					?>

				</div>

			</form>

		</div>

		<?php
	}

	/**
	 * Display abort message using empty state page.
	 *
	 * @since 1.7.3
	 */
	public function display_abort_message() {

		if ( ! $this->abort ) {
			return;
		}

		// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
		echo wpforms_render(
			'builder/fullscreen/abort-message',
			[
				'message' => $this->abort_message,
			],
			true
		);
	}

	/**
	 * Change default admin meta viewport tag upon request to force scrollable
	 * desktop view on small screens.
	 *
	 * @since 1.7.8
	 *
	 * @param string $value Default meta viewport tag value.
	 *
	 * @return string
	 */
	public function viewport_meta( $value ) {

		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		if ( ! empty( $_GET['force_desktop_view'] ) ) {
			return 'width=1024, initial-scale=1';
		}

		return $value;
	}

	/**
	 * Get localized currency strings for the builder.
	 *
	 * @since 1.8.2
	 *
	 * @param array $strings Array of localized strings.
	 *
	 * @return array
	 */
	private function add_localized_currencies( array $strings ) {

		$currency   = wpforms_get_currency();
		$currencies = wpforms_get_currencies();

		$strings['currency']            = sanitize_text_field( $currency );
		$strings['currency_name']       = isset( $currencies[ $currency ]['name'] ) ? sanitize_text_field( $currencies[ $currency ]['name'] ) : '';
		$strings['currency_decimals']   = wpforms_get_currency_decimals( $currencies[ $currency ] );
		$strings['currency_decimal']    = isset( $currencies[ $currency ]['decimal_separator'] ) ? sanitize_text_field( $currencies[ $currency ]['decimal_separator'] ) : '.';
		$strings['currency_thousands']  = isset( $currencies[ $currency ]['thousands_separator'] ) ? sanitize_text_field( $currencies[ $currency ]['thousands_separator'] ) : ',';
		$strings['currency_symbol']     = isset( $currencies[ $currency ]['symbol'] ) ? sanitize_text_field( $currencies[ $currency ]['symbol'] ) : '$';
		$strings['currency_symbol_pos'] = isset( $currencies[ $currency ]['symbol_pos'] ) ? sanitize_text_field( $currencies[ $currency ]['symbol_pos'] ) : 'left';

		return $strings;
	}
}

WPForms_Builder::instance();