<?php
/**
 * Contact_Form_Util class.
 *
 * @package automattic/jetpack-forms
 */

namespace Automattic\Jetpack\Forms\ContactForm;

/**
 * This class serves as a container for what previously were standalone grunion functions.
 * In the long term we should aim to move things to other classes and gradually get rid of this rather than adding more.
 */
class Util {

	/**
	 * Registers all relevant actions and filters for this class.
	 */
	public static function init() {
		add_filter( 'template_include', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_set_block_template_attribute' );

		add_action( 'render_block_core_template_part_post', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_set_block_template_part_id_global' );
		add_action( 'render_block_core_template_part_file', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_set_block_template_part_id_global' );
		add_action( 'render_block_core_template_part_none', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_set_block_template_part_id_global' );
		add_action( 'gutenberg_render_block_core_template_part_post', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_set_block_template_part_id_global' );
		add_action( 'gutenberg_render_block_core_template_part_file', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_set_block_template_part_id_global' );
		add_action( 'gutenberg_render_block_core_template_part_none', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_set_block_template_part_id_global' );

		add_filter( 'render_block', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_unset_block_template_part_id_global', 10, 2 );
		add_filter( 'widget_block_content', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_contact_form_filter_widget_block_content', 1, 3 );

		add_action( 'init', '\Automattic\Jetpack\Forms\ContactForm\Contact_Form_Plugin::init', 9 );
		add_action( 'grunion_scheduled_delete', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_delete_old_spam' );
		add_action( 'grunion_scheduled_delete_temp', '\Automattic\Jetpack\Forms\ContactForm\Util::grunion_delete_old_temp_feedback' );
		add_action( 'grunion_pre_message_sent', '\Automattic\Jetpack\Forms\ContactForm\Util::jetpack_tracks_record_grunion_pre_message_sent', 12, 3 );
	}

	/**
	 * Registers contact form block patterns.
	 */
	public static function register_pattern() {
		$category_slug = 'forms';
		register_block_pattern_category( $category_slug, array( 'label' => __( 'Forms', 'jetpack-forms' ) ) );

		$patterns = array(
			'contact-form'         => array(
				'title'      => __( 'Contact Form', 'jetpack-forms' ),
				'blockTypes' => array( 'jetpack/contact-form' ),
				'categories' => array( $category_slug ),
				'content'    => '<!-- wp:jetpack/contact-form -->
                    <div class="wp-block-jetpack-contact-form">
                        <!-- wp:jetpack/field-name {"required":true} /-->
                        <!-- wp:jetpack/field-email {"required":true} /-->
                        <!-- wp:jetpack/field-textarea /-->
						<!-- wp:button {"tagName":"button","type":"submit"} -->
							<div class="wp-block-button"><button type="submit" class="wp-block-button__link wp-element-button">Contact us</button></div>
						<!-- /wp:button -->
                    </div>
                    <!-- /wp:jetpack/contact-form -->',
			),
			'newsletter-form'      => array(
				'title'      => __( 'Lead Capture Form', 'jetpack-forms' ),
				'blockTypes' => array( 'jetpack/contact-form' ),
				'categories' => array( $category_slug ),
				'content'    => '<!-- wp:jetpack/contact-form -->
                    <div class="wp-block-jetpack-contact-form">
                        <!-- wp:jetpack/field-name {"required":true} /-->
                        <!-- wp:jetpack/field-email {"required":true} /-->
                        <!-- wp:jetpack/field-consent /-->
						<!-- wp:button {"tagName":"button","type":"submit"} -->
							<div class="wp-block-button"><button type="submit" class="wp-block-button__link wp-element-button">Subscribe</button></div>
						<!-- /wp:button -->
                    </div>
                    <!-- /wp:jetpack/contact-form -->',
			),
			'rsvp-form'            => array(
				'title'      => __( 'RSVP Form', 'jetpack-forms' ),
				'blockTypes' => array( 'jetpack/contact-form' ),
				'categories' => array( $category_slug ),
				'content'    => '<!-- wp:jetpack/contact-form {"subject":"A new RSVP from your website"} -->
                    <div class="wp-block-jetpack-contact-form">
                        <!-- wp:jetpack/field-name {"required":true} /-->
                        <!-- wp:jetpack/field-email {"required":true} /-->
                        <!-- wp:jetpack/field-radio {"label":"Attending?","required":true,"options":["Yes","No"]} /-->
                        <!-- wp:jetpack/field-textarea {"label":"Other Details"} /-->
						<!-- wp:button {"tagName":"button","type":"submit"} -->
							<div class="wp-block-button"><button type="submit" class="wp-block-button__link wp-element-button">Send RSVP</button></div>
						<!-- /wp:button -->
                    </div>
                    <!-- /wp:jetpack/contact-form -->',
			),
			'registration-form'    => array(
				'title'      => __( 'Registration Form', 'jetpack-forms' ),
				'blockTypes' => array( 'jetpack/contact-form' ),
				'categories' => array( $category_slug ),
				'content'    => '<!-- wp:jetpack/contact-form {"subject":"A new registration from your website"} -->
                    <div class="wp-block-jetpack-contact-form">
                        <!-- wp:jetpack/field-name {"required":true} /-->
                        <!-- wp:jetpack/field-email {"required":true} /-->
                        <!-- wp:jetpack/field-telephone {"label":"Phone Number"} /-->
                        <!-- wp:jetpack/field-select {"label":"How did you hear about us?","options":["Search Engine","Social Media","TV","Radio","Friend or Family"]} /-->
                        <!-- wp:jetpack/field-textarea {"label":"Other Details"} /-->
						<!-- wp:button {"tagName":"button","type":"submit"} -->
							<div class="wp-block-button"><button type="submit" class="wp-block-button__link wp-element-button">Send</button></div>
						<!-- /wp:button -->
                    </div>
                    <!-- /wp:jetpack/contact-form -->',
			),
			'appointment-form'     => array(
				'title'      => __( 'Appointment Form', 'jetpack-forms' ),
				'blockTypes' => array( 'jetpack/contact-form' ),
				'categories' => array( $category_slug ),
				'content'    => '<!-- wp:jetpack/contact-form {"subject":"A new appointment booked from your website"} -->
                    <div class="wp-block-jetpack-contact-form">
                        <!-- wp:jetpack/field-name {"required":true} /-->
                        <!-- wp:jetpack/field-email {"required":true} /-->
                        <!-- wp:jetpack/field-telephone {"required":true} /-->
                        <!-- wp:jetpack/field-date {"label":"Date","required":true} /-->
                        <!-- wp:jetpack/field-radio {"label":"Time","required":true,"options":["Morning","Afternoon"]} /-->
                        <!-- wp:jetpack/field-textarea {"label":"Notes"} /-->
						<!-- wp:button {"tagName":"button","type":"submit"} -->
							<div class="wp-block-button"><button type="submit" class="wp-block-button__link wp-element-button">Book Appointment</button></div>
						<!-- /wp:button -->
                    </div>
                    <!-- /wp:jetpack/contact-form -->',
			),
			'feedback-form'        => array(
				'title'      => __( 'Feedback Form', 'jetpack-forms' ),
				'blockTypes' => array( 'jetpack/contact-form' ),
				'categories' => array( $category_slug ),
				'content'    => '<!-- wp:jetpack/contact-form {"subject":"New feedback received from your website"} -->
                    <div class="wp-block-jetpack-contact-form">
                        <!-- wp:jetpack/field-name {"required":true} /-->
                        <!-- wp:jetpack/field-email {"required":true} /-->
                        <!-- wp:jetpack/field-rating {"required":true} -->
							<div><!-- wp:jetpack/label {"label":"Please rate our website"} /-->
						<!-- wp:jetpack/input-rating /--></div>
						<!-- /wp:jetpack/field-rating -->
                        <!-- wp:jetpack/field-textarea {"label":"How could we improve?"} /-->
						<!-- wp:button {"tagName":"button","type":"submit"} -->
							<div class="wp-block-button"><button type="submit" class="wp-block-button__link wp-element-button">Send Feedback</button></div>
						<!-- /wp:button -->
                    </div>
                    <!-- /wp:jetpack/contact-form -->',
			),
			'salesforce-lead-form' => array(
				'title'      => __( 'Salesforce Lead Form', 'jetpack-forms' ),
				'blockTypes' => array( 'jetpack/contact-form' ),
				'categories' => array( $category_slug ),
				'content'    => '<!-- wp:jetpack/contact-form {"formTitle":"Salesforce Lead Form"} -->
					<div class="wp-block-jetpack-contact-form">
						<!-- wp:jetpack/field-name {"label":"First Name","required":true,"id":"first_name"} /-->
						<!-- wp:jetpack/field-name {"label":"Last Name","required":true,"id":"last_name"} /-->
						<!-- wp:jetpack/field-email {"label":"Email","required":true,"id":"email"} /-->
						<!-- wp:jetpack/field-telephone {"label":"Phone","id":"phone"} /-->
						<!-- wp:jetpack/field-text {"label":"Company","id":"company"} /-->
						<!-- wp:jetpack/field-text {"label":"Job Title","id":"title"} /-->
						<!-- wp:button {"tagName":"button","type":"submit"} -->
							<div class="wp-block-button"><button type="submit" class="wp-block-button__link wp-element-button">Submit</button></div>
						<!-- /wp:button -->
					</div>
					<!-- /wp:jetpack/contact-form -->',
			),
		);

		foreach ( $patterns as $name => $pattern ) {
			register_block_pattern( $name, $pattern );
		}
	}

	/**
	 * Sets the 'block_template' attribute on all instances of wp:jetpack/contact-form in
	 * the $_wp_current_template_content global variable.
	 *
	 * The $_wp_current_template_content global variable is hydrated immediately prior to
	 * 'template_include' in wp-includes/template-loader.php.
	 *
	 * This fixes Contact Form Blocks added to FSE _templates_ (e.g. Single or 404).
	 *
	 * @param string $template Template to be loaded.
	 */
	public static function grunion_contact_form_set_block_template_attribute( $template ) {
		global $_wp_current_template_content;
		if ( ! is_string( $template ) ) {
			return $template;
		}

		if ( 'template-canvas.php' === basename( $template ) ) {
			Contact_Form::style_on();
			$_wp_current_template_content = self::grunion_contact_form_apply_block_attribute(
				$_wp_current_template_content,
				array(
					'block_template' => 'canvas',
				)
			);
		}
		return $template;
	}

	/**
	 * Sets the $grunion_block_template_part_id global.
	 *
	 * This is part of the fix for Contact Form Blocks added to FSE _template parts_ (e.g footer).
	 * The global is processed in Contact_Form::parse().
	 *
	 * @param string $template_part_id ID for the currently rendered template part.
	 */
	public static function grunion_contact_form_set_block_template_part_id_global( $template_part_id ) {
		$GLOBALS['grunion_block_template_part_id'] = $template_part_id;
	}

	/**
	 * Unsets the global when block is done rendering.
	 *
	 * @param string $content Rendered block content.
	 * @param array  $block   The full block, including name and attributes.
	 * @return string
	 */
	public static function grunion_contact_form_unset_block_template_part_id_global( $content, $block ) {
		if ( isset( $block['blockName'] )
			&& 'core/template-part' === $block['blockName']
			&& isset( $GLOBALS['grunion_block_template_part_id'] ) ) {
			unset( $GLOBALS['grunion_block_template_part_id'] );
		}
		return $content;
	}

	/**
	 * Sets the 'widget' attribute on all instances of the contact form in the widget block.
	 *
	 * @param string           $content  Existing widget block content.
	 * @param array            $instance Array of settings for the current widget.
	 * @param \WP_Widget_Block $widget   Current Block widget instance.
	 * @return string
	 */
	public static function grunion_contact_form_filter_widget_block_content( $content, $instance, $widget ) {
		Contact_Form::style_on();
		// Inject 'block_template' => <widget-id> into all instances of the contact form block.
		return self::grunion_contact_form_apply_block_attribute(
			$content,
			array(
				'widget' => $widget->id,
			)
		);
	}

	/**
	 * Deletes old spam feedbacks to keep the posts table size under control.
	 */
	public static function grunion_delete_old_spam() {
		global $wpdb;

		$grunion_delete_limit = 100;

		$now_gmt = current_time( 'mysql', 1 );
		// Use the spam status changed date if available, otherwise fall back to post_date_gmt for backward compatibility
		$sql      = $wpdb->prepare(
			"
			SELECT p.`ID`
			FROM $wpdb->posts p
			LEFT JOIN $wpdb->postmeta pm ON p.`ID` = pm.`post_id` AND pm.`meta_key` = '_spam_status_changed_gmt'
			WHERE DATE_SUB( %s, INTERVAL 15 DAY ) > COALESCE( pm.`meta_value`, p.`post_date_gmt` )
				AND p.`post_type` = 'feedback'
				AND p.`post_status` = 'spam'
			LIMIT %d
		",
			$now_gmt,
			$grunion_delete_limit
		);
		$post_ids = $wpdb->get_col( $sql ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared,WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching

		foreach ( (array) $post_ids as $post_id ) {
			// force a full delete, skip the trash
			wp_delete_post( $post_id, true );
		}

		if (
			/**
			 * Filter if the module run OPTIMIZE TABLE on the core WP tables.
			 *
			 * @module contact-form
			 *
			 * @since 1.3.1
			 * @since 6.4.0 Set to false by default.
			 *
			 * @param bool $filter Should Jetpack optimize the table, defaults to false.
			 */
			apply_filters( 'grunion_optimize_table', false )
		) {
			$wpdb->query( "OPTIMIZE TABLE $wpdb->posts" ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
		}

		// if we hit the max then schedule another run
		if ( count( $post_ids ) >= $grunion_delete_limit ) {
			wp_schedule_single_event( time() + 700, 'grunion_scheduled_delete' );
		}
	}

	/**
	 * Deletes old temp feedback to keep the posts table size under control.
	 *
	 * @since 6.5.0
	 */
	public static function grunion_delete_old_temp_feedback() {
		global $wpdb;

		$grunion_delete_limit = 100;

		$now_gmt = current_time( 'mysql', 1 );
		$sql     = $wpdb->prepare(
			"
			SELECT `ID`
			FROM $wpdb->posts
			WHERE DATE_SUB( %s, INTERVAL 1 DAY ) > `post_date_gmt`
				AND `post_type` = 'feedback'
				AND `post_status` = 'jp-temp-feedback'
			LIMIT %d
		",
			$now_gmt,
			$grunion_delete_limit
		);

		// The SQL query is already prepared with $wpdb->prepare() above, and direct query is needed for performance-critical cleanup operation
		$post_ids = $wpdb->get_col( $sql ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared,WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching

		foreach ( (array) $post_ids as $post_id ) {
			// force a full delete, skip the trash
			wp_delete_post( $post_id, true );
		}

		if (
			/**
			 * Filter if the module run OPTIMIZE TABLE on the core WP tables.
			 *
			 * @module contact-form
			 *
			 * @since 6.5.0
			 *
			 * @param bool $filter Should Jetpack optimize the table, defaults to false.
			 */
			apply_filters( 'grunion_optimize_table', false )
		) {
			// OPTIMIZE TABLE is a MySQL-specific maintenance command that cannot be prepared and is only run when explicitly enabled via filter
			$wpdb->query( "OPTIMIZE TABLE $wpdb->posts" ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
		}

		// if we hit the max then schedule another run
		if ( count( $post_ids ) >= $grunion_delete_limit ) {
			wp_schedule_single_event( time() + 700, 'grunion_scheduled_delete_temp' );
		}
	}

	/**
	 * Send an event to Tracks on form submission.
	 *
	 * @param int   $post_id - the post_id for the CPT that is created.
	 * @param array $all_values - array containing all form fields.
	 * @param array $extra_values - array containing extra form metadata.
	 *
	 * @return null|void
	 */
	public static function jetpack_tracks_record_grunion_pre_message_sent( $post_id, $all_values = array(), $extra_values = array() ) {
		$post = get_post( $post_id );
		if ( $post ) {
			$extra = gmdate( 'Y-W', strtotime( $post->post_date_gmt ) );
		} else {
			$extra = 'no-post';
		}

		/** This action is documented in jetpack/modules/widgets/social-media-icons.php */
		do_action( 'jetpack_bump_stats_extras', 'jetpack_forms_message_sent', $extra );

		$form_type = isset( $extra_values['widget'] ) ? 'widget' : 'block';

		$context = '';
		if ( isset( $extra_values['block_template'] ) ) {
			$context = 'template';
		} elseif ( isset( $extra_values['block_template_part'] ) ) {
			$context = 'template_part';
		}

		$plugin = Contact_Form_Plugin::init();

		$plugin->record_tracks_event(
			'jetpack_forms_message_sent',
			array(
				'post_id'     => $post_id,
				'form_type'   => $form_type,
				'context'     => $context,
				'has_consent' => empty( $all_values['email_marketing_consent'] ) ? 0 : 1,
			)
		);
	}

	/**
	 * Adds a given attribute to all instances of the Contact Form block.
	 *
	 * @param string $content  Existing content to process.
	 * @param array  $new_attr New attributes to add.
	 * @return string
	 */
	public static function grunion_contact_form_apply_block_attribute( $content, $new_attr ) {
		if ( ! is_string( $content ) ) {
			// If the content is not a string, we cannot process it.
			return $content;
		}

		if ( false === stripos( $content, 'wp:jetpack/contact-form' ) ) {
			return $content;
		}

		// Parse blocks using WordPress core function.
		$blocks = parse_blocks( $content );

		// Recursively modify contact form blocks.
		$modified_blocks = self::modify_contact_form_blocks_recursive( $blocks, $new_attr );

		// Serialize back to block markup.
		return serialize_blocks( $modified_blocks );
	}

	/**
	 * Recursively modifies contact form blocks to add new attributes.
	 *
	 * @param array $blocks    Array of parsed blocks.
	 * @param array $new_attr  New attributes to add.
	 * @return array Modified blocks array.
	 */
	private static function modify_contact_form_blocks_recursive( $blocks, $new_attr ) {
		foreach ( $blocks as &$block ) {
			// Check if this is a contact form block.
			if ( 'jetpack/contact-form' === $block['blockName'] ) {
				// Merge new attributes with existing ones.
				$block['attrs'] = array_merge(
					$block['attrs'] ?? array(),
					$new_attr
				);
			}

			// Recursively process inner blocks.
			if ( ! empty( $block['innerBlocks'] ) ) {
				$block['innerBlocks'] = self::modify_contact_form_blocks_recursive(
					$block['innerBlocks'],
					$new_attr
				);
			}
		}

		return $blocks;
	}

	/**
	 * Get a filename for export tasks
	 *
	 * @param string $source The filtered source for exported data.
	 * @return string The filename without source nor date suffix.
	 */
	public static function get_export_filename( $source = '' ) {
		return $source === ''
			? sprintf(
				/* translators: Site title, used to craft the export filename, eg "MySite - Jetpack Form Responses" */
				__( '%s - Jetpack Form Responses', 'jetpack-forms' ),
				sanitize_file_name( get_bloginfo( 'name' ) )
			)
			: sprintf(
				/* translators: 1: Site title; 2: post title. Used to craft the export filename, eg "MySite - Jetpack Form Responses - Contact" */
				__( '%1$s - Jetpack Form Responses - %2$s', 'jetpack-forms' ),
				sanitize_file_name( get_bloginfo( 'name' ) ),
				sanitize_file_name( html_entity_decode( $source, ENT_QUOTES | ENT_HTML5, 'UTF-8' ) )
			);
	}
}
