<?php
/**
 * Gravity Forms integration.
 *
 * @package Dealroot
 */

namespace Dealroot\Forms;

use Dealroot\Attribution;
use Dealroot\Capture;

defined( 'ABSPATH' ) || exit;

/**
 * Captures Gravity Forms entries and adds the {dealroot_attribution} merge tag.
 */
class Gravity_Forms extends Integration {

	/**
	 * {@inheritDoc}
	 */
	public static function is_available() {
		return class_exists( '\GFForms' );
	}

	/**
	 * {@inheritDoc}
	 */
	public static function key() {
		return 'gravityforms';
	}

	/**
	 * {@inheritDoc}
	 */
	public static function label() {
		return 'Gravity Forms';
	}

	/**
	 * Title of a form.
	 *
	 * @param int $form_id Form ID.
	 * @return string
	 */
	public static function form_title( $form_id ) {
		$form = class_exists( '\\GFAPI' ) ? \GFAPI::get_form( (int) $form_id ) : null;

		return is_array( $form ) ? (string) ( $form['title'] ?? '' ) : '';
	}

	/**
	 * {@inheritDoc}
	 */
	public function register() {
		add_action( 'gform_after_submission', array( $this, 'capture' ), 10, 2 );
		add_filter( 'gform_custom_merge_tags', array( $this, 'merge_tags' ) );
		add_filter( 'gform_replace_merge_tags', array( $this, 'replace_merge_tags' ), 10, 7 );
	}

	/**
	 * Stores the entry. Gravity Forms does not fire this hook for spam.
	 *
	 * @param array $entry Entry.
	 * @param array $form  Form.
	 */
	public function capture( $entry, $form ) {
		$fields = array();

		foreach ( (array) ( $form['fields'] ?? array() ) as $field ) {
			if ( ! is_object( $field ) || ! method_exists( $field, 'get_value_export' ) ) {
				continue;
			}

			$fields[] = array(
				'label' => $field->label,
				'name'  => 'input_' . $field->id,
				'type'  => $field->type,
				'value' => $field->get_value_export( $entry, (string) $field->id, true ),
			);
		}

		Capture::submission( self::key(), (string) ( $form['id'] ?? '' ), (string) ( $form['title'] ?? '' ), $fields );
	}

	/**
	 * Adds the merge tag to the picker.
	 *
	 * @param array $tags Custom merge tags.
	 * @return array
	 */
	public function merge_tags( $tags ) {
		$tags[] = array(
			'label' => __( 'Lead source (Dealroot)', 'dealroot' ),
			'tag'   => '{dealroot_attribution}',
		);

		return $tags;
	}

	/**
	 * Replaces the merge tag.
	 *
	 * @param string $text       Text.
	 * @param array  $form       Form.
	 * @param array  $entry      Entry.
	 * @param bool   $url_encode URL encode.
	 * @param bool   $esc_html   Escape HTML.
	 * @param bool   $nl2br      Convert newlines.
	 * @param string $format     Format.
	 * @return string
	 */
	public function replace_merge_tags( $text, $form, $entry, $url_encode, $esc_html, $nl2br, $format ) {
		if ( false === strpos( (string) $text, '{dealroot_attribution}' ) ) {
			return $text;
		}

		$summary = Attribution::summary_text();
		if ( 'html' === $format ) {
			$summary = nl2br( esc_html( $summary ) );
		}

		return str_replace( '{dealroot_attribution}', $summary, $text );
	}
}