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<?php |
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/** |
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* Class to manage functions for comment preview. |
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* |
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* @package WP_Comment_Preview |
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*/ |
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namespace CommentPreview\Inc; |
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/** |
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* Class for comment preview functionality. |
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* |
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* @package CommentPreview\Inc |
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*/ |
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class Comment_Preview { |
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/** |
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* Class constructor. |
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*/ |
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public function __construct() { |
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$this->_setup_hooks(); |
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} |
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/** |
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* Initialize actions and filters. |
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*/ |
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protected function _setup_hooks() { |
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add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) ); |
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add_filter( 'comment_form_fields', array( $this, 'comment_form_fields' ), 20 ); |
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add_filter( 'comment_form_field_comment', array( $this, 'append_markdown_option' ), 20 ); |
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add_filter( 'comment_form_submit_button', array( $this, 'append_preview_button' ), 20 ); |
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add_action( 'rest_api_init', array( $this, 'register_rest_route' ) ); |
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} |
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/** |
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* Enqueue JavaScript for handling comment previews. |
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*/ |
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public function enqueue_scripts() { |
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/** |
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* Filter to enable comment preview on custom post types. |
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* |
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* @param array List of post types. |
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*/ |
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$post_types = apply_filters( 'wp_comment_preview_allowed_post_types', array( 'post' ) ); |
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if ( is_singular( $post_types ) ) { |
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wp_register_script( |
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'wp-comment-preview', |
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WP_COMMENT_PREVIEW_URL . '/assets/js/comment-preview.js', |
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array(), |
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'1.0.0', |
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true |
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); |
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wp_localize_script( |
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'wp-comment-preview', |
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'commentPreviewData', |
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array( |
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'apiURL' => get_rest_url( null, 'wp_comment_preview/v1/' ), |
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'nonce' => wp_create_nonce( 'wp_rest' ), |
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) |
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); |
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wp_enqueue_script( 'wp-comment-preview' ); |
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} |
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} |
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/** |
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* Add custom markup in comment form. |
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* |
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* @param array $comment_fields Comment fields. |
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* |
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* @return mixed |
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*/ |
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public function comment_form_fields( array $comment_fields = array() ) { |
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ob_start(); |
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// Get template file output. |
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include WP_COMMENT_PREVIEW_PATH . 'templates/comment-preview.php'; |
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// Save output and stop output buffering. |
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$field = ob_get_clean(); |
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if ( ! empty( $field ) ) { |
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$comment_fields['comment'] = '<div id="preview-wrapper"></div>' . $comment_fields['comment']; |
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$comment_fields['comment'] .= $field; |
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} |
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return $comment_fields; |
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} |
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/** |
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* Append radio buttons to allow a commenter to format their comment in |
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* either markdown or plain text. |
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* |
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* @param string $fields HTML to output for the comment field. |
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* |
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* @return string Modified HTML. |
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*/ |
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public function append_markdown_option( $fields ) { |
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ob_start(); |
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// Get template file output. |
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include WP_COMMENT_PREVIEW_PATH . 'templates/markdown-option.php'; |
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// Save output and stop output buffering. |
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$markdown_option_field = ob_get_clean(); |
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return $fields . $markdown_option_field; |
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} |
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/** |
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* Append a button to allow commenters to preview their comment. |
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* |
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* @param string $submit_button HTML to output for the submit button. |
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* |
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* @return string Modified HTML |
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*/ |
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public function append_preview_button( $submit_button = '' ) { |
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$preview_button = sprintf( |
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'<input name="preview" type="button" id="preview" class="submit" value="%1$s">', |
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esc_html__( 'Preview', 'comment-preview' ) |
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); |
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return $submit_button . $preview_button; |
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} |
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/** |
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* Register the route for generating comment previews. |
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*/ |
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public function register_rest_route() { |
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register_rest_route( |
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'wp_comment_preview/v1', |
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'preview', |
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array( |
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'methods' => \WP_REST_Server::CREATABLE, |
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'callback' => array( $this, 'generate_preview' ), |
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'permission_callback' => '__return_true', |
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) |
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); |
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} |
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/** |
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* Processes a comment for previewing. |
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* |
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* @param \WP_REST_Request $request Full details about the request. |
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* |
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* @return array Response object. |
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*/ |
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public function generate_preview( $request ) { |
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$response = array(); |
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if ( ! empty( $request['author'] ) ) { |
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$response['author'] = esc_html( $request['author'] ); |
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} |
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$user_id = ( ( is_user_logged_in() ) ? get_current_user_id() : 0 ); |
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if ( ! empty( $user_id ) && empty( $response['author'] ) ) { |
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$user = get_userdata( $user_id ); |
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if ( $user ) { |
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$response['author'] = $user->data->display_name; |
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} |
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} |
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$response['gravatar'] = get_avatar_url( $user_id, array( 'size' => 50 ) ); |
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$response['date'] = current_time( get_option( 'date_format' ) . ' \a\t ' . get_option( 'time_format' ) ); |
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if ( ! empty( $request['comment'] ) && isset( $request['format'] ) ) { |
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if ( 'text' === $request['format'] ) { |
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$comment = wp_kses_data( $request['comment'] ); |
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} else { |
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$comment = apply_filters( 'pre_comment_content', $request['comment'] ); |
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} |
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} else { |
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$comment = ''; |
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} |
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$response['comment'] = $comment; |
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return $response; |
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} |
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} |
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vishalkakadiya /
comment-preview
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