<?php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Notifications\Notifiable;
use Watson\Validating\ValidatingTrait;
use Schema;

class Setting extends Model
{
    use Notifiable;
    protected $injectUniqueIdentifier = true;
    use ValidatingTrait;

    protected $rules = [
          "brand"     => 'required|min:1|numeric',
          "qr_text"         => 'max:31|nullable',
          "logo_img"        => 'mimes:jpeg,bmp,png,gif',
          "alert_email"   => 'email_array|nullable',
          "default_currency"   => 'required',
          "locale"   => 'required',
          "slack_endpoint"   => 'url|required_with:slack_channel|nullable',
          "slack_channel"   => 'regex:/(?<!\w)#\w+/|required_with:slack_endpoint|nullable',
          "slack_botname"   => 'string|nullable',
          'labels_per_page' => 'numeric',
          'labels_width' => 'numeric',
          'labels_height' => 'numeric',
          'labels_pmargin_left' => 'numeric|nullable',
          'labels_pmargin_right' => 'numeric|nullable',
          'labels_pmargin_top' => 'numeric|nullable',
          'labels_pmargin_bottom' => 'numeric|nullable',
          'labels_display_bgutter' => 'numeric|nullable',
          'labels_display_sgutter' => 'numeric|nullable',
          'labels_fontsize' => 'numeric|min:5',
          'labels_pagewidth' => 'numeric|nullable',
          'labels_pageheight' => 'numeric|nullable',
          "thumbnail_max_h"     => 'numeric|max:500|min:25',
          "pwd_secure_min" => "numeric|required|min:5",
          "audit_warning_days" => "numeric|nullable",
          "audit_interval" => "numeric|nullable",
          "custom_forgot_pass_url" => "url|nullable",
    ];

    protected $fillable = ['site_name','email_domain','email_format','username_format'];

    public static function getSettings()
    {
        static $static_cache = null;

        if (!$static_cache) {
            if (Schema::hasTable('settings')) {
                $static_cache = Setting::first();
            }
        }

            return $static_cache;

    }

    public static function setupCompleted()
    {

        $users_table_exists = Schema::hasTable('users');
        $settings_table_exists = Schema::hasTable('settings');

        if ($users_table_exists && $settings_table_exists) {
            $usercount = User::withTrashed()->count();
            $settingsCount = Setting::count();
            return ($usercount > 0 && $settingsCount > 0);
        }

    }

    public function lar_ver()
    {
        $app = \App::getFacadeApplication();
        return $app::VERSION;
    }

    public static function getDefaultEula()
    {
        $Parsedown = new \Parsedown();
        if (Setting::getSettings()->default_eula_text) {
            return $Parsedown->text(e(Setting::getSettings()->default_eula_text));
        }
        return null;
    }

    /**
     * Escapes the custom CSS, and then un-escapes the greater-than symbol
     * so it can work with direct descendant characters for bootstrap
     * menu overrides like:
     * 
     * .skin-blue .sidebar-menu>li.active>a, .skin-blue .sidebar-menu>li:hover>a
     * 
     * Important: Do not remove the e() escaping here, as we output raw in the blade.
     *
     * @return string escaped CSS
     * @author A. Gianotto <snipe@snipe.net>
     */
    public function show_custom_css()
    {
        $custom_css = Setting::getSettings()->custom_css;
        $custom_css = e($custom_css);
        // Needed for modifying the bootstrap nav :(
        $custom_css = str_ireplace('script', 'SCRIPTS-NOT-ALLOWED-HERE', $custom_css);
        $custom_css = str_replace('&gt;', '>', $custom_css);
        return $custom_css;
    }

    /**
    * Converts bytes into human readable file size.
    *
    * @param string $bytes
    * @return string human readable file size (2,87 Мб)
    * @author Mogilev Arseny
    */
    public static function fileSizeConvert($bytes)
    {
        $bytes = floatval($bytes);
            $arBytes = array(
                0 => array(
                    "UNIT" => "TB",
                    "VALUE" => pow(1024, 4)
                ),
                1 => array(
                    "UNIT" => "GB",
                    "VALUE" => pow(1024, 3)
                ),
                2 => array(
                    "UNIT" => "MB",
                    "VALUE" => pow(1024, 2)
                ),
                3 => array(
                    "UNIT" => "KB",
                    "VALUE" => 1024
                ),
                4 => array(
                    "UNIT" => "B",
                    "VALUE" => 1
                ),
            );

            foreach ($arBytes as $arItem) {
                if ($bytes >= $arItem["VALUE"]) {
                    $result = $bytes / $arItem["VALUE"];
                    $result = round($result, 2) .$arItem["UNIT"];
                    break;
                }
            }
            return $result;
    }

    /**
     * The url for slack notifications.
     * Used by Notifiable trait.
     * @return mixed
     */
    public function routeNotificationForSlack()
    {
        // At this point the endpoint is the same for everything.
        //  In the future this may want to be adapted for individual notifications.
        return $this->slack_endpoint;
    }

    public static function passwordComplexityRulesSaving($action = 'update')
    {
        $security_rules = '';
        $settings = Setting::getSettings();

        // Check if they have uncommon password enforcement selected in settings
        if ($settings->pwd_secure_uncommon == 1) {
            $security_rules .= '|dumbpwd';
        }

        // Check for any secure password complexity rules that may have been selected
        if ($settings->pwd_secure_complexity!='') {
            $security_rules  .= '|'.$settings->pwd_secure_complexity;
        }

        if ($action == 'update') {
            return 'nullable|min:'.$settings->pwd_secure_min.$security_rules;
        }

        return 'required|min:'.$settings->pwd_secure_min.$security_rules;

    }


}