<?php
namespace FrontGlut\Core;

defined( 'ABSPATH' ) || exit;

/**
 * Module registry. Disabled modules load no code, CSS or JS.
 */
class Modules {
	const OPTION = 'frontglut_modules';

	private $defs    = array();
	private $enabled = array();
	private $booted  = array();

	public function __construct() {
		$this->defs = apply_filters( 'frontglut_register_modules', array(
			'dashboard' => array( 'label' => __( 'Dashboard', 'frontglut' ), 'desc' => __( 'Frontend app shell, menus, widgets, theming.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Dashboard\\Dashboard', 'core' => true ),
			'auth'      => array( 'label' => __( 'Accounts & Auth', 'frontglut' ), 'desc' => __( 'Login, registration, profiles, roles, captcha, social login.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Auth\\Auth', 'core' => true ),
			'forms'     => array( 'label' => __( 'Forms & Fields', 'frontglut' ), 'desc' => __( 'Drag-and-drop form builder and field engine.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Forms\\Forms', 'core' => true ),
			'posts'     => array( 'label' => __( 'Post Submission', 'frontglut' ), 'desc' => __( 'Guest and member posting, moderation, my submissions.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Posts\\Posts' ),
			'posttypes' => array( 'label' => __( 'Post Types & Taxonomies', 'frontglut' ), 'desc' => __( 'Custom post type and taxonomy builder with frontend CRUD.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\PostTypes\\PostTypes' ),
			'products'  => array( 'label' => __( 'WooCommerce Products', 'frontglut' ), 'desc' => __( 'Manage products from the frontend.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Products\\Products', 'requires' => 'woocommerce' ),
			'orders'    => array( 'label' => __( 'Orders, Coupons & Reports', 'frontglut' ), 'desc' => __( 'Orders, coupons, reports, customers, reviews.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Orders\\Orders', 'requires' => 'woocommerce' ),
			'vendors'   => array( 'label' => __( 'Multivendor', 'frontglut' ), 'desc' => __( 'Vendors, storefronts, commissions, withdrawals.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Vendors\\Vendors', 'requires' => 'woocommerce', 'default' => false ),
			'engage'    => array( 'label' => __( 'Communication', 'frontglut' ), 'desc' => __( 'Notifications, messages, enquiries, tickets, knowledge base, followers.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Engage\\Engage' ),
			'files'     => array( 'label' => __( 'Files', 'frontglut' ), 'desc' => __( 'Uploader and file explorer.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\Files\\Files' ),
			'system'    => array( 'label' => __( 'System', 'frontglut' ), 'desc' => __( 'Status, audit log, tools, privacy.', 'frontglut' ), 'class' => 'FrontGlut\\Modules\\System\\System', 'core' => true ),
		) );
		$saved = get_option( self::OPTION, null );
		foreach ( $this->defs as $slug => $d ) {
			$default = isset( $d['default'] ) ? (bool) $d['default'] : true;
			if ( ! empty( $d['core'] ) ) {
				$on = true;
			} elseif ( is_array( $saved ) && array_key_exists( $slug, $saved ) ) {
				$on = (bool) $saved[ $slug ];
			} else {
				$on = $default;
			}
			$this->enabled[ $slug ] = $on && $this->available( $slug );
		}
	}

	public function definitions() {
		return $this->defs;
	}

	/** Dependencies satisfied? */
	public function available( $slug ) {
		$req = isset( $this->defs[ $slug ]['requires'] ) ? $this->defs[ $slug ]['requires'] : '';
		if ( 'woocommerce' === $req ) {
			return class_exists( 'WooCommerce' );
		}
		return true;
	}

	public function is_enabled( $slug ) {
		return ! empty( $this->enabled[ $slug ] );
	}

	public function save( array $on ) {
		$out = array();
		foreach ( $this->defs as $slug => $d ) {
			$out[ $slug ] = ! empty( $d['core'] ) || ! empty( $on[ $slug ] );
		}
		update_option( self::OPTION, $out, false );
	}

	public function boot_all() {
		foreach ( $this->defs as $slug => $d ) {
			if ( empty( $this->enabled[ $slug ] ) || ! class_exists( $d['class'] ) ) {
				continue;
			}
			$obj = new $d['class']();
			$obj->boot();
			$this->booted[ $slug ] = $obj;
		}
		do_action( 'frontglut_modules_loaded', $this );
	}

	public function get( $slug ) {
		return isset( $this->booted[ $slug ] ) ? $this->booted[ $slug ] : null;
	}
}