<?php

/**
 * @package Pods\Fields
 */
class PodsField_WYSIWYG extends PodsField {

	/**
	 * {@inheritdoc}
	 */
	public static $group = 'Paragraph';

	/**
	 * {@inheritdoc}
	 */
	public static $type = 'wysiwyg';

	/**
	 * {@inheritdoc}
	 */
	public static $label = 'WYSIWYG (Visual Editor)';

	/**
	 * {@inheritdoc}
	 */
	public static $prepare = '%s';

	/**
	 * {@inheritdoc}
	 */
	public function setup() {

		static::$group = __( 'Paragraph', 'pods' );
		static::$label = __( 'WYSIWYG (Visual Editor)', 'pods' );
	}

	/**
	 * {@inheritdoc}
	 */
	public function options() {

		$options = array(
			static::$type . '_editor'            => array(
				'label'      => __( 'Editor', 'pods' ),
				'default'    => 'tinymce',
				'type'       => 'pick',
				'data'       => apply_filters(
					'pods_form_ui_field_wysiwyg_editors', array(
						'tinymce'  => __( 'TinyMCE (WP Default, cannot be used with repeatable fields)', 'pods' ),
						'quill'    => __( 'Quill Editor (Limited line break functionality)', 'pods' ),
						'cleditor' => __( 'CLEditor (No longer available, the fallback uses Quill Editor)', 'pods' ),
					)
				),
				'pick_show_select_text' => 0,
				'dependency' => true,
			),
			'editor_options'                     => array(
				'label'      => __( 'Editor Options', 'pods' ),
				'type'  => 'boolean_group',
				'depends-on' => array( static::$type . '_editor' => 'tinymce' ),
				'boolean_group'      => array(
					static::$type . '_media_buttons' => array(
						'label'   => __( 'Enable Media Buttons', 'pods' ),
						'default' => 1,
						'type'    => 'boolean',
					),
				),
			),
			static::$type . '_editor_height'     => array(
				'label'           => __( 'Editor Height', 'pods' ),
				'help'            => __( 'Height in pixels', 'pods' ),
				'default'         => '',
				'type'            => 'number',
				'depends-on'      => array( static::$type . '_editor' => 'tinymce' ),
				'number_decimals' => 0,
			),
			'output_options'                     => array(
				'label' => __( 'Output Options', 'pods' ),
				'type'  => 'boolean_group',
				'boolean_group' => array(
					static::$type . '_trim'      => array(
						'label'      => __( 'Trim extra whitespace before/after contents', 'pods' ),
						'default'    => 1,
						'type'       => 'boolean',
						'dependency' => true,
					),
					static::$type . '_oembed'          => array(
						'label'   => __( 'Enable oEmbed', 'pods' ),
						'default' => 0,
						'type'    => 'boolean',
						'help'    => array(
							__( 'Embed videos, images, tweets, and other content.', 'pods' ),
							'https://wordpress.org/support/article/embeds/',
						),
					),
					static::$type . '_wptexturize'     => array(
						'label'   => __( 'Enable wptexturize', 'pods' ),
						'default' => 1,
						'type'    => 'boolean',
						'help'    => array(
							__( 'Transforms less-beautiful text characters into stylized equivalents.', 'pods' ),
							'https://developer.wordpress.org/reference/functions/wptexturize/',
						),
					),
					static::$type . '_convert_chars'   => array(
						'label'   => __( 'Enable convert_chars', 'pods' ),
						'default' => 1,
						'type'    => 'boolean',
						'help'    => array(
							__( 'Converts text into valid XHTML and Unicode', 'pods' ),
							'https://developer.wordpress.org/reference/functions/convert_chars/',
						),
					),
					static::$type . '_wpautop'         => array(
						'label'   => __( 'Enable wpautop', 'pods' ),
						'default' => 1,
						'type'    => 'boolean',
						'help'    => array(
							__( 'Changes double line-breaks in the text into HTML paragraphs', 'pods' ),
							'https://developer.wordpress.org/reference/functions/wpautop/',
						),
					),
					static::$type . '_allow_shortcode' => array(
						'label'      => __( 'Allow Shortcodes', 'pods' ),
						'default'    => 0,
						'type'       => 'boolean',
						'dependency' => true,
						'help'       => array(
							__( 'Embed [shortcodes] that help transform your static content into dynamic content.', 'pods' ),
							'https://codex.wordpress.org/Shortcode_API',
						),
					),
				),
			),
			static::$type . '_allowed_html_tags' => array(
				'label'   => __( 'Allowed HTML Tags', 'pods' ),
				'default' => '',
				'type'    => 'text',
				'help'    => __( 'Format: strong em a ul ol li b i', 'pods' ),
			),
		);

		if ( function_exists( 'Markdown' ) ) {
			$options['output_options']['boolean_group'][ static::$type . '_allow_markdown' ] = array(
				'label'   => __( 'Allow Markdown Syntax', 'pods' ),
				'default' => 0,
				'type'    => 'boolean',
			);
		}

		return $options;
	}

	/**
	 * {@inheritdoc}
	 */
	public function schema( $options = null ) {

		$schema = 'LONGTEXT';

		return $schema;
	}

	/**
	 * {@inheritdoc}
	 */
	public function display( $value = null, $name = null, $options = null, $pod = null, $id = null ) {
		$value = $this->strip_html( $value, $options );
		$value = $this->strip_shortcodes( $value, $options );
		$value = $this->trim_whitespace( $value, $options );

		if ( 1 === (int) pods_v( static::$type . '_oembed', $options, 0 ) ) {
			$post_temp = false;

			// Workaround for WP_Embed since it needs a $post to work from
			if ( 'post_type' === pods_v( 'type', $pod ) && 0 < $id && ( ! isset( $GLOBALS['post'] ) || empty( $GLOBALS['post'] ) ) ) {
				$post_temp = true;

				// @codingStandardsIgnoreLine
				$GLOBALS['post'] = get_post( $id );
			}

			/**
			 * @var $embed WP_Embed
			 */
			$embed = $GLOBALS['wp_embed'];
			$value = $embed->run_shortcode( $value );
			$value = $embed->autoembed( $value );

			// Cleanup after ourselves
			if ( $post_temp ) {
				// @codingStandardsIgnoreLine
				$GLOBALS['post'] = null;
			}
		}//end if

		if ( 1 === (int) pods_v( static::$type . '_wptexturize', $options, 1 ) ) {
			$value = wptexturize( $value );
		}

		if ( 1 === (int) pods_v( static::$type . '_convert_chars', $options, 1 ) ) {
			$value = convert_chars( $value );
		}

		if ( 1 === (int) pods_v( static::$type . '_wpautop', $options, 1 ) ) {
			$value = wpautop( $value );
		}

		if ( 1 === (int) pods_v( static::$type . '_allow_shortcode', $options, 0 ) ) {
			if ( 1 === (int) pods_v( static::$type . '_wpautop', $options, 1 ) ) {
				$value = shortcode_unautop( $value );
			}

			$value = do_shortcode( $value );
		}

		if ( function_exists( 'Markdown' ) && 1 === (int) pods_v( static::$type . '_allow_markdown', $options ) ) {
			$value = Markdown( $value );
		}

		return $value;
	}

	/**
	 * {@inheritdoc}
	 */
	public function input( $name, $value = null, $options = null, $pod = null, $id = null ) {

		$options         = ( is_array( $options ) || is_object( $options ) ) ? $options : (array) $options;
		$form_field_type = PodsForm::$field_type;

		// Force TinyMCE repeatable fields to not be repeatable because it lacks compatibility.
		if ( 1 === (int) pods_v( 'repeatable', $options ) && 'tinymce' === pods_v( static::$type . '_editor', $options, 'tinymce', true ) ) {
			$options['repeatable'] = 0;
		}

		$value = $this->normalize_value_for_input( $value, $options, "\n" );

		// Normalize the line breaks for React.
		$value = str_replace( "\r\n", "\n", $value );
		$value = str_replace( "\r", "\n", $value );

		if ( isset( $options['name'] ) && ! pods_permission( $options ) ) {
			if ( pods_v( 'read_only', $options, false ) ) {
				$options['readonly'] = true;

				$field_type = 'textarea';
			} else {
				return;
			}
		} elseif ( ! pods_has_permissions( $options ) && pods_v( 'read_only', $options, false ) ) {
			$options['readonly'] = true;

			$field_type = 'textarea';
		} elseif ( 'tinymce' === pods_v( static::$type . '_editor', $options ) ) {
			// TinyMCE does not support repeatable.
			if ( is_array( $value ) ) {
				$value = implode( "\n", $value );
			}

			$field_type = 'tinymce';

			// Enforce boolean.
			$options[ static::$type . '_media_buttons' ]  = filter_var( pods_v( static::$type . '_media_buttons', $options, true ), FILTER_VALIDATE_BOOLEAN );

			// Set up default editor.
			// @todo Support this properly in React, which will be a challenge.
			$options[ static::$type . '_default_editor' ] = pods_v( static::$type . '_default_editor', $options, wp_default_editor(), true );

			if ( in_array( $options[ static::$type . '_default_editor' ], [ 'html', 'tinymce' ], true ) ) {
				$options[ static::$type . '_default_editor' ] = 'tinymce';
			}

			wp_tinymce_inline_scripts();
			wp_enqueue_editor();

			$settings = [];
			$settings['textarea_name'] = $name;
			$settings['media_buttons'] = false;

			if ( ! ( defined( 'PODS_DISABLE_FILE_UPLOAD' ) && true === PODS_DISABLE_FILE_UPLOAD ) && ! ( defined( 'PODS_UPLOAD_REQUIRE_LOGIN' ) && is_bool( PODS_UPLOAD_REQUIRE_LOGIN ) && true === PODS_UPLOAD_REQUIRE_LOGIN && ! is_user_logged_in() ) && ! ( defined( 'PODS_UPLOAD_REQUIRE_LOGIN' ) && ! is_bool( PODS_UPLOAD_REQUIRE_LOGIN ) && ( ! is_user_logged_in() || ! current_user_can( PODS_UPLOAD_REQUIRE_LOGIN ) ) ) ) {
				$settings['media_buttons'] = $options[ static::$type . '_media_buttons' ];
			} else {
				$options[ static::$type . '_media_buttons' ] = false;
			}

			$editor_height = (int) pods_v( static::$type . '_editor_height', $options, false );

			if ( $editor_height ) {
				$settings['editor_height'] = $editor_height;
			}

			if ( ! empty( $options[ static::$type . '_tinymce_settings' ] ) ) {
				$settings = array_merge( $settings, $options[ static::$type . '_tinymce_settings' ] );
			}

			// WP will handle the scripting needed, but we won't output the textarea here.
			ob_start();
			wp_editor( $value, '_pods_dfv_' . $name, $settings );
			$unused_output = ob_get_clean();

			// Workaround because the above already outputs the style we need.
			$styles = wp_styles();

			$found_editor_buttons = array_search( 'editor-buttons', $styles->done, true );

			if ( false !== $found_editor_buttons ) {
				unset( $styles->done[ $found_editor_buttons ] );
			}

			$found_dashicons = array_search( 'dashicons', $styles->done, true );

			if ( false !== $found_dashicons ) {
				unset( $styles->done[ $found_dashicons ] );
			}

			wp_print_styles( 'editor-buttons' );
			wp_print_styles( 'dashicons' );
		} elseif ( 'quill' === pods_v( static::$type . '_editor', $options ) ) {
			$field_type = 'quill';
		} elseif ( 'cleditor' === pods_v( static::$type . '_editor', $options ) ) {
			$field_type = 'quill';
		} else {
			// Support custom WYSIWYG integration
			$editor_type = pods_v( static::$type . '_editor', $options );
			do_action( "pods_form_ui_field_wysiwyg_{$editor_type}", $name, $value, $options, $pod, $id );
			do_action( 'pods_form_ui_field_wysiwyg', pods_v( static::$type . '_editor', $options ), $name, $value, $options, $pod, $id );

			return;
		}//end if

		if ( ! empty( $options['disable_dfv'] ) ) {
			return pods_view( PODS_DIR . 'ui/fields/' . $field_type . '.php', compact( array_keys( get_defined_vars() ) ) );
		}

		$type = pods_v( 'type', $options, static::$type );

		$args = compact( array_keys( get_defined_vars() ) );
		$args = (object) $args;

		$this->render_input_script( $args );
	}

	/**
	 * {@inheritdoc}
	 */
	public function pre_save( $value, $id = null, $name = null, $options = null, $fields = null, $pod = null, $params = null ) {
		$value = $this->strip_html( $value, $options );
		$value = $this->strip_shortcodes( $value, $options );
		$value = $this->trim_whitespace( $value, $options );

		$length = (int) pods_v( static::$type . '_max_length', $options, 0 );

		if ( 0 < $length && $length < pods_mb_strlen( $value ) ) {
			$value = pods_mb_substr( $value, 0, $length );
		}

		return $value;
	}

	/**
	 * {@inheritdoc}
	 */
	public function ui( $id, $value, $name = null, $options = null, $fields = null, $pod = null ) {
		$value = $this->strip_html( $value, $options );
		$value = $this->strip_shortcodes( $value, $options );
		$value = $this->trim_whitespace( $value, $options );

		$value = wp_trim_words( $value );

		return $value;
	}

	/**
	 * {@inheritdoc}
	 */
	public function strip_html( $value, $options = null ) {

		$options = ( is_array( $options ) || is_object( $options ) ) ? $options : (array) $options;

		// Allow HTML tags.
		$options[ static::$type . '_allow_html' ] = 1;

		return parent::strip_html( $value, $options );
	}
}