<?php

if ( ! class_exists( 'acf_field_wysiwyg' ) ) :

	class acf_field_wysiwyg extends acf_field {


		/*
		*  __construct
		*
		*  This function will setup the field type data
		*
		*  @type    function
		*  @date    5/03/2014
		*  @since   5.0.0
		*
		*  @param   n/a
		*  @return  n/a
		*/

		function initialize() {

			// vars
			$this->name          = 'wysiwyg';
			$this->label         = __( 'WYSIWYG Editor', 'acf' );
			$this->category      = 'content';
			$this->description   = __( 'Displays the WordPress WYSIWYG editor as seen in Posts and Pages allowing for a rich text-editing experience that also allows for multimedia content.', 'acf' ) . ' ' . __( 'We do not recommend using this field in ACF Blocks.', 'acf' );
			$this->preview_image = acf_get_url() . '/assets/images/field-type-previews/field-preview-wysiwyg.png';
			$this->doc_url       = acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/wysiwyg-editor/', 'docs', 'field-type-selection' );
			$this->defaults      = array(
				'tabs'          => 'all',
				'toolbar'       => 'full',
				'media_upload'  => 1,
				'default_value' => '',
				'delay'         => 0,
			);
			$this->supports      = array(
				'escaping_html' => true,
			);

			// add acf_the_content filters
			$this->add_filters();

			// actions
			add_action( 'acf/enqueue_uploader', array( $this, 'acf_enqueue_uploader' ) );
		}


		/*
		*  add_filters
		*
		*  This function will add filters to 'acf_the_content'
		*
		*  @type    function
		*  @date    20/09/2016
		*  @since   5.4.0
		*
		*  @param   n/a
		*  @return  n/a
		*/

		function add_filters() {

			// WordPress 5.5 introduced new function for applying image tags.
			$wp_filter_content_tags = function_exists( 'wp_filter_content_tags' ) ? 'wp_filter_content_tags' : 'wp_make_content_images_responsive';

			// Mimic filters added to "the_content" in "wp-includes/default-filters.php".
			add_filter( 'acf_the_content', 'capital_P_dangit', 11 );
			// add_filter( 'acf_the_content', 'do_blocks', 9 ); Not yet supported.
			add_filter( 'acf_the_content', 'wptexturize' );
			add_filter( 'acf_the_content', 'convert_smilies', 20 );
			add_filter( 'acf_the_content', 'wpautop' );
			add_filter( 'acf_the_content', 'shortcode_unautop' );
			// add_filter( 'acf_the_content', 'prepend_attachment' ); Causes double image on attachment page.
			add_filter( 'acf_the_content', $wp_filter_content_tags );
			add_filter( 'acf_the_content', 'do_shortcode', 11 );

			// Mimic filters added to "the_content" in "wp-includes/class-wp-embed.php"
			if ( isset( $GLOBALS['wp_embed'] ) ) {
				add_filter( 'acf_the_content', array( $GLOBALS['wp_embed'], 'run_shortcode' ), 8 );
				add_filter( 'acf_the_content', array( $GLOBALS['wp_embed'], 'autoembed' ), 8 );
			}
		}


		/*
		*  get_toolbars
		*
		*  This function will return an array of toolbars for the WYSIWYG field
		*
		*  @type    function
		*  @date    18/04/2014
		*  @since   5.0.0
		*
		*  @param   n/a
		*  @return  (array)
		*/

		function get_toolbars() {

			// vars
			$editor_id = 'acf_content';
			$toolbars  = array();

			// mce buttons (Full)
			$mce_buttons   = array( 'formatselect', 'bold', 'italic', 'bullist', 'numlist', 'blockquote', 'alignleft', 'aligncenter', 'alignright', 'link', 'wp_more', 'spellchecker', 'fullscreen', 'wp_adv' );
			$mce_buttons_2 = array( 'strikethrough', 'hr', 'forecolor', 'pastetext', 'removeformat', 'charmap', 'outdent', 'indent', 'undo', 'redo', 'wp_help' );

			// mce buttons (Basic)
			$teeny_mce_buttons = array( 'bold', 'italic', 'underline', 'blockquote', 'strikethrough', 'bullist', 'numlist', 'alignleft', 'aligncenter', 'alignright', 'undo', 'redo', 'link', 'fullscreen' );

			// Full
			$toolbars['Full'] = array(
				1 => apply_filters( 'mce_buttons', $mce_buttons, $editor_id ),
				2 => apply_filters( 'mce_buttons_2', $mce_buttons_2, $editor_id ),
				3 => apply_filters( 'mce_buttons_3', array(), $editor_id ),
				4 => apply_filters( 'mce_buttons_4', array(), $editor_id ),
			);

			// Basic
			$toolbars['Basic'] = array(
				1 => apply_filters( 'teeny_mce_buttons', $teeny_mce_buttons, $editor_id ),
			);

			// Filter for 3rd party
			$toolbars = apply_filters( 'acf/fields/wysiwyg/toolbars', $toolbars );

			// return
			return $toolbars;
		}


		/*
		*  acf_enqueue_uploader
		*
		*  Registers toolbars data for the WYSIWYG field.
		*
		*  @type    function
		*  @date    16/12/2015
		*  @since   5.3.2
		*
		*  @param   void
		*  @return  void
		*/

		function acf_enqueue_uploader() {

			// vars
			$data     = array();
			$toolbars = $this->get_toolbars();

			// loop
			if ( $toolbars ) {
				foreach ( $toolbars as $label => $rows ) {

					// vars
					$key = $label;
					$key = sanitize_title( $key );
					$key = str_replace( '-', '_', $key );

					// append
					$data[ $key ] = array();

					if ( $rows ) {
						foreach ( $rows as $i => $row ) {
							$data[ $key ][ $i ] = implode( ',', $row );
						}
					}
				}
			}

			// localize
			acf_localize_data(
				array(
					'toolbars' => $data,
				)
			);
		}

		/**
		 * Create the HTML interface for your field
		 *
		 * @param array $field An array holding all the field's data
		 *
		 * @type    action
		 * @since   3.6
		 * @date    23/01/13
		 */
		function render_field( $field ) {

			// enqueue
			acf_enqueue_uploader();

			// vars
			$id             = uniqid( 'acf-editor-' );
			$default_editor = 'html';
			$show_tabs      = true;

			// get height
			$height = acf_get_user_setting( 'wysiwyg_height', 300 );
			$height = max( $height, 300 ); // minimum height is 300

			// detect mode
			if ( ! user_can_richedit() ) {
				$show_tabs = false;
			} elseif ( $field['tabs'] == 'visual' ) {

				// case: visual tab only
				$default_editor = 'tinymce';
				$show_tabs      = false;
			} elseif ( $field['tabs'] == 'text' ) {

				// case: text tab only
				$show_tabs = false;
			} elseif ( wp_default_editor() == 'tinymce' ) {

				// case: both tabs
				$default_editor = 'tinymce';
			}

			// must be logged in to upload
			if ( ! current_user_can( 'upload_files' ) ) {
				$field['media_upload'] = 0;
			}

			// mode
			$switch_class = ( $default_editor === 'html' ) ? 'html-active' : 'tmce-active';

			// filter
			add_filter( 'acf_the_editor_content', 'format_for_editor', 10, 2 );

			$field['value'] = is_string( $field['value'] ) ? $field['value'] : '';
			$field['value'] = apply_filters( 'acf_the_editor_content', $field['value'], $default_editor );

			// attr
			$wrap = array(
				'id'           => 'wp-' . $id . '-wrap',
				'class'        => 'acf-editor-wrap wp-core-ui wp-editor-wrap ' . $switch_class,
				'data-toolbar' => $field['toolbar'],
			);

			// delay
			if ( $field['delay'] ) {
				$wrap['class'] .= ' delay';
			}

			// vars
			$textarea = acf_get_textarea_input(
				array(
					'id'    => $id,
					'class' => 'wp-editor-area',
					'name'  => $field['name'],
					'style' => $height ? "height:{$height}px;" : '',
					'value' => '%s',
				)
			);

			?>
		<div <?php echo acf_esc_attrs( $wrap ); ?>>
			<div id="wp-<?php echo esc_attr( $id ); ?>-editor-tools" class="wp-editor-tools hide-if-no-js">
				<?php if ( $field['media_upload'] ) : ?>
				<div id="wp-<?php echo esc_attr( $id ); ?>-media-buttons" class="wp-media-buttons">
					<?php
					if ( ! function_exists( 'media_buttons' ) ) {
						require ABSPATH . 'wp-admin/includes/media.php';
					}
					do_action( 'media_buttons', $id );
					?>
				</div>
				<?php endif; ?>
					<?php if ( user_can_richedit() && $show_tabs ) : ?>
					<div class="wp-editor-tabs">
						<button id="<?php echo esc_attr( $id ); ?>-tmce" class="wp-switch-editor switch-tmce" data-wp-editor-id="<?php echo esc_attr( $id ); ?>" type="button"><?php echo __( 'Visual', 'acf' ); ?></button>
						<button id="<?php echo esc_attr( $id ); ?>-html" class="wp-switch-editor switch-html" data-wp-editor-id="<?php echo esc_attr( $id ); ?>" type="button"><?php echo _x( 'Text', 'Name for the Text editor tab (formerly HTML)', 'acf' ); ?></button>
					</div>
				<?php endif; ?>
			</div>
			<div id="wp-<?php echo esc_attr( $id ); ?>-editor-container" class="wp-editor-container">
					<?php if ( $field['delay'] ) : ?>
					<div class="acf-editor-toolbar"><?php _e( 'Click to initialize TinyMCE', 'acf' ); ?></div>
				<?php endif; ?>
					<?php printf( $textarea, $field['value'] ); ?>
			</div>
		</div>
			<?php
		}


		/*
		*  render_field_settings()
		*
		*  Create extra options for your field. This is rendered when editing a field.
		*  The value of $field['name'] can be used (like bellow) to save extra data to the $field
		*
		*  @type    action
		*  @since   3.6
		*  @date    23/01/13
		*
		*  @param   $field  - an array holding all the field's data
		*/
		function render_field_settings( $field ) {
			acf_render_field_setting(
				$field,
				array(
					'label'        => __( 'Default Value', 'acf' ),
					'instructions' => __( 'Appears when creating a new post', 'acf' ),
					'type'         => 'textarea',
					'name'         => 'default_value',
				)
			);
		}

		/**
		 * Renders the field settings used in the "Presentation" tab.
		 *
		 * @since 6.0
		 *
		 * @param array $field The field settings array.
		 * @return void
		 */
		function render_field_presentation_settings( $field ) {
			$toolbars = $this->get_toolbars();
			$choices  = array();

			if ( ! empty( $toolbars ) ) {
				foreach ( $toolbars as $k => $v ) {
					$label = $k;
					$name  = sanitize_title( $label );
					$name  = str_replace( '-', '_', $name );

					$choices[ $name ] = $label;
				}
			}

			acf_render_field_setting(
				$field,
				array(
					'label'        => __( 'Tabs', 'acf' ),
					'instructions' => '',
					'type'         => 'select',
					'name'         => 'tabs',
					'choices'      => array(
						'all'    => __( 'Visual & Text', 'acf' ),
						'visual' => __( 'Visual Only', 'acf' ),
						'text'   => __( 'Text Only', 'acf' ),
					),
				)
			);

			acf_render_field_setting(
				$field,
				array(
					'label'        => __( 'Toolbar', 'acf' ),
					'instructions' => '',
					'type'         => 'select',
					'name'         => 'toolbar',
					'choices'      => $choices,
					'conditions'   => array(
						'field'    => 'tabs',
						'operator' => '!=',
						'value'    => 'text',
					),
				)
			);

			acf_render_field_setting(
				$field,
				array(
					'label'        => __( 'Show Media Upload Buttons', 'acf' ),
					'instructions' => '',
					'name'         => 'media_upload',
					'type'         => 'true_false',
					'ui'           => 1,
				)
			);

			acf_render_field_setting(
				$field,
				array(
					'label'        => __( 'Delay Initialization', 'acf' ),
					'instructions' => __( 'TinyMCE will not be initialized until field is clicked', 'acf' ),
					'name'         => 'delay',
					'type'         => 'true_false',
					'ui'           => 1,
					'conditions'   => array(
						'field'    => 'tabs',
						'operator' => '!=',
						'value'    => 'text',
					),
				)
			);
		}
		/**
		 * This filter is applied to the $value after it is loaded from the db, and before it is returned to the template
		 *
		 * @type    filter
		 * @since   3.6
		 *
		 * @param mixed   $value       The value which was loaded from the database.
		 * @param mixed   $post_id     The $post_id from which the value was loaded.
		 * @param array   $field       The field array holding all the field options.
		 * @param boolean $escape_html Should the field return a HTML safe formatted value.
		 *
		 * @return mixed $value The modified value
		 */
		public function format_value( $value, $post_id, $field, $escape_html ) {
			// Bail early if no value or not a string.
			if ( empty( $value ) || ! is_string( $value ) ) {
				return $value;
			}

			if ( $escape_html ) {
				add_filter( 'acf_the_content', 'acf_esc_html', 1 );
			}

			$value = apply_filters( 'acf_the_content', $value );

			if ( $escape_html ) {
				remove_filter( 'acf_the_content', 'acf_esc_html', 1 );
			}

			// Follow the_content function in /wp-includes/post-template.php
			return str_replace( ']]>', ']]&gt;', $value );
		}
	}


	// initialize
	acf_register_field_type( 'acf_field_wysiwyg' );
endif; // class_exists check

?>