<?php

if (!defined('ABSPATH')) {
    exit;
}

/**
 * Loads the plugin.
 */
class WJECF_Bootstrap
{
    public static function execute()
    {
        $bootstrap = new self();
        $bootstrap->bootstrap();
    }

    protected function bootstrap()
    {
        $this->register_autoload();
        $this->register_global_functions();

        $this->require_once_php('includes/abstract-wjecf-plugin.php');
        $pro = $this->try_include_php('pro/class-wjecf-pro-controller.php');

        $this->load_plugin('includes/plugins/WJECF_Debug');

        if (WJECF()->is_request('admin')) {
            $this->load_plugin('includes/plugins/WJECF_Admin');
            $this->load_plugin('includes/plugins/WJECF_Admin_Settings');
            $this->load_plugin('includes/plugins/WJECF_Admin_Data_Update');
        }

        $this->load_plugin('includes/plugins/WJECF_Autocoupon');
        $this->load_plugin('includes/plugins/WJECF_WPML');

        if ($pro) {
            if (WJECF()->is_request('admin')) {
                $this->load_plugin('pro/plugins/WJECF_Pro_Admin_Auto_Update');
            }
            $this->load_plugin('pro/plugins/WJECF_Pro_Free_Products/WJECF_Pro_Free_Products');
            $this->load_plugin('pro/plugins/WJECF_Pro_Coupon_Queueing');
            $this->load_plugin('pro/plugins/WJECF_Pro_Product_Filter');
            $this->load_plugin('pro/plugins/WJECF_Pro_Limit_Discount_Quantities');
        }

        // DEPRECATED. We keep $wjecf_extended_coupon_features for backwards compatibility; use WJECF_API()
        $GLOBALS['wjecf_extended_coupon_features'] = WJECF();

        WJECF()->start();

        // WP-cli for debugging
        if (defined('WP_CLI') && WP_CLI) {
            WJECF_Debug_CLI::add_command();
        }
    }

    protected function register_autoload()
    {
        spl_autoload_register(
            function ($class) {
                $prefix = 'WJECF_';

                // Our class Prefix.
                if (0 !== strncmp($prefix, $class, strlen($prefix))) {
                    return;
                }
                $file = strtolower('class-'.str_replace('_', '-', $class).'.php');
                $subdirs = ['/includes/', '/pro/'];
                foreach ($subdirs as $subdir) {
                    $fullpath = dirname(__DIR__).$subdir.$file;
                    if (file_exists($fullpath)) {
                        require $fullpath;

                        return;
                    }
                }
            },
        );
    }

    protected function register_global_functions()
    {
        /**
         * Get the instance of WJECF.
         *
         * @return WJECF_Controller|WJECF_Pro_Controller The instance of WJECF
         */
        function wjecf()
        {
            return WJECF_Controller::instance();
        }

        /**
         * Get the instance of WJECF_Admin.
         *
         * @return WJECF_Admin The instance of WJECF_Admin
         */
        function wjecf_admin()
        {
            return WJECF()->get_plugin('admin');
        }

        /**
         * Get the instance of WJECF_WC.
         *
         * @return WJECF_WC The instance of WJECF_WC
         */
        function wjecf_wc()
        {
            return WJECF_WC::instance();
        }

        /**
         * Get the instance if the Extended Coupon Features for WooCommerce API.
         *
         * @return WJECF_Pro_API The API object
         */
        function wjecf_api()
        {
            return WJECF_Pro_API::instance();
        }

        /**
         * Wraps a product or coupon in a decorator.
         *
         * @deprecated 3.0.0
         *
         * @param mixed $object The WC_Coupon or WC_Product instance, or the post id
         *
         * @return WJECF_Wrap
         */
        function wjecf_wrap($object)
        {
            return WJECF_WC::instance()->wrap($object);
        }
    }

    /**
     * require_once( $path + '.php' ).
     *
     * @param string $path Path to the php file (excluding extension) relative to the current path
     *
     * @return bool True if succesful
     */
    protected function require_once_php($path)
    {
        require_once $this->get_path($path);
    }

    /**
     * tries to include_once( $path + '.php' ).
     *
     * @param string $path Path to the php file (excluding extension) relative to the current path
     *
     * @return bool True if succesful
     */
    protected function try_include_php($path)
    {
        $fullpath = $this->get_path($path);

        if (!file_exists($fullpath)) {
            return false;
        }

        include_once $fullpath;

        return true;
    }

    /**
     * Loads the class file and adds the plugin to WJECF(). Throws exception on failure.
     *
     * @param string $path Path to the php file (excluding extension) relative to the current path
     */
    protected function load_plugin($path)
    {
        $class_name = basename($path);

        // Load disabled plugins only if they are enabled or on the admin page
        if (!is_admin() && in_array($class_name, WJECF()->get_option('disabled_plugins'))) {
            return;
        }

        $this->try_include_php($path.'.php');

        if (!WJECF()->add_plugin(new $class_name())) {
            throw new Exception(sprintf('Unable to add plugin %s', $class_name));
        }
    }

    /**
     * Gets the path relative to the includes/ directory.
     *
     * @param string $path
     *
     * @return string
     */
    private function get_path($path)
    {
        return dirname(__DIR__).'/'.$path;
    }
}