<?php
defined( 'ABSPATH' ) || exit;

/**
 * Elementor Pro forms. They aren't stored as forms of their own but as "form"
 * widgets inside each page / popup / template's `_elementor_data`, so they are
 * found by scanning that data; a form is known by its widget id. Answers come
 * from `elementor_pro/forms/new_record`.
 */
class Beon_Notify_Source_Elementor extends Beon_Notify_Form_Source {

	/** @var array|null forms found on this request */
	private $found = null;

	public function key() {
		return 'elementor';
	}

	public function name() {
		return 'Elementor';
	}

	public function active() {
		return defined( 'ELEMENTOR_PRO_VERSION' ) || class_exists( '\ElementorPro\Plugin' );
	}

	public function forms() {
		if ( null !== $this->found ) {
			return $this->found;
		}

		global $wpdb;

		// Only rows that contain a form widget; revisions and trashed copies left out.
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- read once per settings page view; no API lists Elementor forms.
		$rows = $wpdb->get_results(
			$wpdb->prepare(
				"SELECT p.ID, p.post_title, pm.meta_value FROM {$wpdb->postmeta} pm
				INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
				WHERE pm.meta_key = '_elementor_data' AND pm.meta_value LIKE %s
				AND p.post_type <> 'revision' AND p.post_status IN ('publish', 'private', 'draft', 'future')
				ORDER BY p.post_title",
				'%' . $wpdb->esc_like( '"widgetType":"form"' ) . '%'
			)
		);

		$this->found = array();
		foreach ( (array) $rows as $row ) {
			$elements = json_decode( (string) $row->meta_value, true );
			if ( is_array( $elements ) ) {
				$this->collect( $elements, (string) $row->post_title );
			}
		}

		return $this->found;
	}

	public function listen() {
		add_action( 'elementor_pro/forms/new_record', array( $this, 'on_submit' ), 10, 2 );
	}

	/**
	 * @param \ElementorPro\Modules\Forms\Classes\Form_Record $record
	 */
	public function on_submit( $record ) {
		$form_id = (string) $record->get_form_settings( 'id' );
		if ( '' === $form_id ) {
			return;
		}

		$answers = array();
		foreach ( (array) $record->get( 'fields' ) as $key => $field ) {
			$answers[ (string) ( $field['id'] ?? $key ) ] = $this->text( $field['value'] ?? '' );
		}

		Beon_Notify_Forms::submitted( $this->key(), $form_id, $answers, (string) $record->get_form_settings( 'form_name' ), $record );
	}

	/**
	 * Walks the element tree; each form widget becomes a form ("Form name — Page title").
	 */
	private function collect( array $elements, $page ) {
		foreach ( $elements as $element ) {
			if ( ! is_array( $element ) ) {
				continue;
			}

			if ( 'form' === ( $element['widgetType'] ?? '' ) && ! empty( $element['id'] ) && ! isset( $this->found[ $element['id'] ] ) ) {
				$settings = (array) ( $element['settings'] ?? array() );
				$fields   = array();

				foreach ( (array) ( $settings['form_fields'] ?? array() ) as $field ) {
					$type = (string) ( $field['field_type'] ?? 'text' );
					$key  = (string) ( $field['custom_id'] ?? '' );
					if ( '' === $key || $this->skip_type( $type ) ) {
						continue;
					}

					$fields[] = array(
						'key'   => $key,
						'label' => wp_strip_all_tags( (string) ( $field['field_label'] ?? '' ) ) ?: $key,
						'type'  => $type,
					);
				}

				$name = trim( (string) ( $settings['form_name'] ?? '' ) );

				$this->found[ (string) $element['id'] ] = array(
					'title'  => ( '' !== $name ? $name : __( 'Form', 'beon-chat' ) ) . ' — ' . ( '' !== $page ? $page : __( '(no title)', 'beon-chat' ) ),
					'fields' => $fields,
				);
			}

			if ( ! empty( $element['elements'] ) && is_array( $element['elements'] ) ) {
				$this->collect( $element['elements'], $page );
			}
		}
	}
}