<?php

namespace common\helpers;


class AppArrayHelper
{


    public static function mapValues($array, $func){
        $result = [];
        foreach ($array as $item){
            $result[] = $func($item);
        }
        return $result;
    }

    public static function  objectArrayToMap($array, $funcGetId, $funcGetValue){
        $result = [];

        foreach ($array as $item ){
            $id = $funcGetId($item);
            $value = $funcGetValue($item);
            $result[$id] = $value;
        }

        return $result;
    }

    /**
     * Map an array of object by object id
     * [obj1,obj2] => [obj1.id => obj1,obj2.id => obj2]
     * @param $array
     * @return array
     */
    public static function  objectArrayToMapById($array){
        return AppArrayHelper::objectArrayToMap(
            $array,
            function ($item){
                return $item->id;
            },
            function ($item){
                return $item;
            }
        );
    }

    public static function getOrDefault($array, $key, $defaultValue = null){
        if ( isset($array[$key])){
            return $array[$key];
        }
        return $defaultValue;
    }

}