<?php
/**
 * Unified Field Manager File
 *
 * @package Airy_Frontend_Forms
 */

// If this file is called directly, abort.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
/**
 * Unified Field Manager - Works with both ACF and SCF
 *
 * @package Airy_Frontend_Forms
 */
class AFFCF_Field_Manager {
	use AFFCF_Singleton;

	/**
	 * Compatibility layer
	 *
	 * @var object
	 */
	private $compat;

	/**
	 * Active plugin type
	 *
	 * @var string
	 */
	private $plugin_type;

	/**
	 * Initialize
	 */
	protected function init() {
		$this->plugin_type = AFFCF_Plugin_Checker::get_active_plugin();

		if ( 'acf' === $this->plugin_type ) {
			$this->compat = AFFCF_ACF_Compat::get_instance();
		} elseif ( 'scf' === $this->plugin_type ) {
			$this->compat = AFFCF_SCF_Compat::get_instance();
		}
	}

	/**
	 * Check if available
	 */
	public function is_available() {
		return null !== $this->plugin_type;
	}

	/**
	 * Get plugin type
	 */
	public function get_plugin_type() {
		return $this->plugin_type;
	}

	/**
	 * Get field groups
	 *
	 * @param string $post_type Post type.
	 * @return array Field groups.
	 */
	public function get_field_groups( $post_type ) {
		if ( ! $this->compat ) {
			return array();
		}
		return $this->compat->get_field_groups_for_cpt( $post_type );
	}

	/**
	 * Get fields
	 *
	 * @param string $group_id Group ID.
	 * @return array Fields.
	 */
	public function get_fields( $group_id ) {
		if ( ! $this->compat ) {
			return array();
		}
		return $this->compat->get_fields_for_group( $group_id );
	}

	/**
	 * Get field
	 *
	 * @param string $field_key Field key.
	 * @return array|null Field data.
	 */
	public function get_field( $field_key ) {
		if ( ! $this->compat ) {
			return null;
		}
		return $this->compat->get_field( $field_key );
	}

	/**
	 * Get field value
	 *
	 * @param string $field_key Field key.
	 * @param int    $post_id Post ID.
	 * @return mixed Field value.
	 */
	public function get_field_value( $field_key, $post_id ) {
		if ( ! $this->compat ) {
			return null;
		}
		return $this->compat->get_field_value( $field_key, $post_id );
	}

	/**
	 * Update field
	 *
	 * @param string $field_key Field key.
	 * @param mixed  $value Field value.
	 * @param int    $post_id Post ID.
	 * @return bool Success.
	 */
	public function update_field( $field_key, $value, $post_id ) {
		if ( ! $this->compat ) {
			return false;
		}
		return $this->compat->update_field( $field_key, $value, $post_id );
	}

	/**
	 * Get available post types
	 */
	public function get_available_post_types() {
		$post_types = get_post_types(
			array(
				'public'  => true,
				'show_ui' => true,
			),
			'objects'
		);

		$available = array();
		foreach ( $post_types as $post_type ) {
			$available[] = array(
				'value' => $post_type->name,
				'label' => $post_type->labels->singular_name,
				'icon'  => $post_type->menu_icon ?? 'dashicons-admin-post',
			);
		}

		return $available;
	}

	/**
	 * Get taxonomies
	 *
	 * @param string $post_type Post type.
	 * @return array Taxonomies.
	 */
	public function get_taxonomies( $post_type ) {
		$taxonomies = get_object_taxonomies( $post_type, 'objects' );

		$available = array();
		foreach ( $taxonomies as $taxonomy ) {
			if ( ! $taxonomy->public || ! $taxonomy->show_ui ) {
				continue;
			}

			$available[] = array(
				'name'         => $taxonomy->name,
				'label'        => $taxonomy->labels->singular_name,
				'label_plural' => $taxonomy->labels->name,
				'hierarchical' => $taxonomy->hierarchical,
			);
		}

		return $available;
	}

	/**
	 * Get version
	 */
	public function get_version() {
		if ( ! $this->compat ) {
			return null;
		}
		return $this->compat->get_version();
	}
}