<?php
/**
 * Personal data exporter and eraser for Gravity Forms.
 *
 * @package BJ\GravityForms\PrivacyActions
 * @author bjornjohansen
 * @version 0.1.1
 * @license https://www.gnu.org/licenses/old-licenses/gpl-2.0.html  GNU General Public License version 2 (GPLv2)
 */

/**
 * Register the Gravity Forms exporter.
 *
 * @param array $exporters Current array of data exporters.
 * @return array The exporters.
 */
function bj_register_gravityforms_exporter( $exporters ) {
	// Let us stay out of the way if an exporter already exists for Gravity Forms.
	if ( ! array_key_exists( 'gravityforms', $exporters ) && class_exists( 'GFAPI' ) ) {
		$exporters['gravityforms'] = array(
			'exporter_friendly_name' => __( 'Gravity Forms', 'gravityforms' ),
			'callback' => 'bj_gravityforms_exporter',
		);
	}
	return $exporters;
}
add_filter( 'wp_privacy_personal_data_exporters', 'bj_register_gravityforms_exporter', 10, 1 );

/**
 * Personal data exporter for Gravity Forms callback.
 *
 * @param string  $email_address The email address to the individual.
 * @param integer $page          The exporter page.
 * @return array The return array with the data and the “done” status.
 */
function bj_gravityforms_exporter( $email_address, $page = 1 ) {

	$export_items = [];

	$forms = GFAPI::get_forms();
	$form = $forms[ $page - 1 ];

	$search_criteria['field_filters'][] = [
		'value' => $email_address,
	];
	$entries = GFAPI::get_entries( $form['id'], $search_criteria );

	foreach ( $entries as $entry ) {

		$data = [
			[
				'name'  => __( 'Form', 'gravityforms' ),
				'value' => esc_html( $form['title'] ),
			],
		];

		if ( isset( $entry['source_url'] ) && strlen( $entry['source_url'] ) ) {
			$data[] = [
				'name'  => __( 'Embed Url', 'gravityforms' ),
				'value' => esc_url( $entry['source_url'] ),
			];
		}

		if ( isset( $entry['date_created'] ) && strlen( $entry['date_created'] ) ) {
			$data[] = [
				'name'  => __( 'Submitted on', 'gravityforms' ),
				'value' => esc_html( $entry['date_created'] ),
			];
		}

		if ( isset( $entry['ip'] ) && strlen( $entry['ip'] ) ) {
			$data[] = [
				'name'  => __( 'User IP', 'gravityforms' ),
				'value' => esc_html( $entry['ip'] ),
			];
		}

		if ( isset( $entry['user_agent'] ) && strlen( $entry['user_agent'] ) ) {
			$data[] = [
				'name'  => __( 'User Agent', 'gravityforms' ),
				'value' => esc_html( $entry['user_agent'] ),
			];
		}

		foreach ( $form['fields'] as $field ) {
			$data[] = [
				'name'  => $field->label,
				'value' => esc_html( $field->get_value_export( $entry ) ),
			];
		}

		$export_items[] = [
			'group_id'    => 'gravityforms',
			'group_label' => __( 'Forms', 'gravityforms' ),
			'item_id'     => 'gravityforms-' . $entry['id'],
			'data'        => $data,
		];

	}

	return [
		'data' => $export_items,
		'done' => count( $forms ) <= $page,
	];
}

/**
 * Register the Gravity Forms eraser.
 *
 * @param array $erasers Current array of data erasers.
 * @return array The erasers.
 */
function bj_register_gravityforms_eraser( $erasers ) {
	// Let us stay out of the way if an eraser already exists for Gravity Forms.
	if ( ! array_key_exists( 'gravityforms', $erasers ) && class_exists( 'GFAPI' ) ) {
		$erasers['gravityforms'] = [
			'eraser_friendly_name' => __( 'Gravity Forms', 'gravityforms' ),
			'callback'             => 'bj_gravityforms_eraser',
		];
	}
	return $erasers;
}

add_filter( 'wp_privacy_personal_data_erasers', 'bj_register_gravityforms_eraser', 10, 1 );

/**
 * Personal data eraser for Gravity Forms callback.
 *
 * @param string  $email_address The email address to the individual.
 * @param integer $page          The eraser page.
 * @return array The return status array.
 */
function bj_gravityforms_eraser( $email_address, $page = 1 ) {

	$items_removed = false;
	$items_retained = false;
	$messages = [];

	$forms = GFAPI::get_forms();
	$form = $forms[ $page - 1 ];

	$search_criteria['field_filters'][] = [
		'value' => $email_address,
	];
	$entries = GFAPI::get_entries( $form['id'], $search_criteria );

	foreach ( $entries as $entry ) {

		$delete_res = GFAPI::delete_entry( $entry['id'] );

		if ( true === $delete_res ) {
			$items_removed = true;
		} elseif ( is_wp_error( $delete_res ) ) {
			$items_retained = true;
			$messages[] = $delete_res->get_error_message();
		} else {
			$items_retained = true;
		}
	}

	return [
		'items_removed'  => $items_removed,
		'items_retained' => $items_retained,
		'messages'       => $messages,
		'done'           => count( $forms ) <= $page,
	];

}