<?php

namespace Wpo\Services;

// Prevent public access to this script
defined('ABSPATH') or die();

use \Wpo\Services\Log_Service;

include_once(ABSPATH . 'wp-admin/includes/file.php');

if (!class_exists('\Wpo\Services\Files_Service')) {

    class Files_Service
    {

        private static $instance = null;

        private $wpo365_profile_images_dir = null;

        private $wpo365_profile_images_url = null;

        public $wpo365_profile_images_configured = false;

        protected function __construct()
        {
        }

        public static function get_instance()
        {

            if (empty(self::$instance)) {
                self::$instance = new Files_Service();
            }

            return self::$instance;
        }

        public function configure_wpo365_profile_images()
        {

            if ($this->wpo365_profile_images_configured) {
                return true;
            }

            global $wp_filesystem;

            if (false === ($credentials = request_filesystem_credentials('')) || !WP_Filesystem($credentials)) {
                Log_Service::write_log('ERROR', __METHOD__ . ' -> Missing / incorrect credentials to write to the file system');
                $this->wpo365_profile_images_configured = false;
                return false;
            }

            $blog_id = get_current_blog_id();
            $upload_dir = wp_upload_dir();

            $upload_base_dir = $upload_dir['basedir'];
            $upload_base_dir = str_replace("sites/$blog_id", '', $upload_base_dir);
            $upload_base_dir = str_replace("sites\\$blog_id", '', $upload_base_dir);
            $upload_base_dir = trailingslashit($upload_base_dir);

            $this->wpo365_profile_images_dir = $upload_base_dir . 'wpo365/profile-images/'; // C:\path\to\wordpress\wp-content\uploads\wpo365\profile-images\

            if (!file_exists($this->wpo365_profile_images_dir)) {

                if (!$wp_filesystem->mkdir($this->wpo365_profile_images_dir, FS_CHMOD_DIR) && !wp_mkdir_p($this->wpo365_profile_images_dir)) {
                    Log_Service::write_log('DEBUG', __METHOD__ . ' -> Files service could not create requested target directory ' . $this->wpo365_profile_images_dir);
                    $this->wpo365_profile_images_configured = false;
                    return false;
                }
            }

            $upload_base_url = $upload_dir['baseurl'];
            $upload_base_url = str_replace("sites/$blog_id", '', $upload_base_url);
            $upload_base_url = str_replace("sites\\$blog_id", '', $upload_base_url);
            $upload_base_url = trailingslashit($upload_base_url);

            $this->wpo365_profile_images_url = $upload_base_url . 'wpo365/profile-images/'; // http://example.com/wp-content/uploads/wpo365/profile-images/

            Log_Service::write_log('DEBUG', __METHOD__ . ' -> Files service has been configured successfully');
            $this->wpo365_profile_images_configured = true;
            return true;
        }

        public function get_wpo365_profile_images_dir()
        {
            return $this->wpo365_profile_images_dir;
        }

        public function get_wpo365_profile_images_url()
        {
            return $this->wpo365_profile_images_url;
        }

        public function save_wpo365_profile_image($path, $file_content)
        {

            global $wp_filesystem;

            if ($this->wpo365_profile_images_configured) {
                Log_Service::write_log('DEBUG', __METHOD__ . ' -> Trying to write a file to the file system');
                return $wp_filesystem->put_contents($path, $file_content, FS_CHMOD_FILE);
            }

            return false;
        }
    }
}