<?php

namespace Luticate\Utils\Business;

use Luticate\Utils\DataAccess\LuDataAccess;
use Luticate\Utils\Dbo\LuDbo;

abstract class LuBusiness {
    protected static $_resourceName = null;
    protected static $_resourceNameUnPluralize = true;

    /**
     * @param string $reason
     * @throws LuBusinessException
     */
    public static function badInput($reason = 'Invalid user input')
    {
        throw new LuBusinessException($reason, 400);
    }
    
    /**
     * @param string $reason
     * @throws LuBusinessException
     */
    public static function unauthorized($reason = 'Unauthorized')
    {
        throw new LuBusinessException($reason, 401);
    }

    /**
     * @param string $reason
     * @throws LuBusinessException
     */
    public static function forbidden($reason = 'Forbidden')
    {
        throw new LuBusinessException($reason, 403);
    }

    /**
     * @param string $reason
     * @throws LuBusinessException
     */
    public static function notFound($reason = null)
    {
        if (is_null($reason)) {
            $reason = static::getResourceName() . " not found";
        }
        throw new LuBusinessException($reason, 404);
    }

    /**
     * @param \Closure $function
     * @return mixed
     */
    public static function transact(\Closure $function)
    {
        return static::getDataAccess()->transact($function);
    }

    /**
     * @param $id int
     */
    public static function checkIdExists($id)
    {
        static::getSingleById($id);
    }

    /**
     * @param $id int
     * @return LuDbo
     */
    public static function getSingleById($id)
    {
        $data = static::getDataAccess()->getSingleById($id);
        if (is_null($data)) {
            self::notFound();
        }
        return $data;
    }

    /**
     * @param $id int
     * @return LuDbo
     */
    public static function deleteSingleById($id)
    {
        $dbo = static::getSingleById($id);
        static::getDataAccess()->deleteSingleById($id);
        return $dbo;
    }

    /**
     * @param $dbo LuDbo
     * @return LuDbo
     */
    public static function addSingleId($dbo)
    {
        $id = static::getDataAccess()->addSingleId($dbo);
        return static::getSingleById($id);
    }

    /**
     * @param $id int
     * @param $dbo LuDbo
     * @return LuDbo
     */
    public static function editSingleById($id, $dbo)
    {
        static::checkIdExists($id);
        static::getDataAccess()->editSingleById($dbo, $id);
        return static::getSingleById($id);
    }

    /**
     * @return LuDataAccess
     */
    protected static function getDataAccess()
    {
        return null;
    }

    public static function getResourceName()
    {
        $res = static::$_resourceName;
        if ($res == null) {
            $match = [];
            $className = get_called_class();
            preg_match('/([^\\\\]*)Business$/', get_called_class(), $match);
            if (count($match) < 2) {
                $res = $className;
            }
            else {
                $res = $match[1];
            }
            if (static::$_resourceNameUnPluralize) {
                if (LuStringUtils::endsWith($res, "ies")) {
                    $res = substr($res, 0, strlen($res) - 3) . "y";
                }
                else if (LuStringUtils::endsWith($res, "s")) {
                    $res = substr($res, 0, strlen($res) - 1);
                }
            }
        }
        return $res;
    }
}