<?php
namespace App\Libs;

use Illuminate\Support\Facades\Crypt;

trait Encryptable
{
    public function getCryptData()
    {
        if($this->_crypt_data == null && $this->_cryptable) {
            $cryptValue = $this->{$this->_cryptable};
            // logger($cryptValue);
            // print_r($cryptValue);
            if($cryptValue) {
                try {
                    $decryptValue = Crypt::decryptString($cryptValue);
                    $this->_crypt_data = json_decode($decryptValue, true);
                } catch (\Exception $e) {
                    logger($e->getTraceAsString());
                    $this->_crypt_data = [];
                }
                // print_r($this->_crypt_data);
            }
            else $this->_crypt_data = [];
            // logger($this->_crypt_data);
            // print_r($this->_crypt_data);
        }
        return $this->_crypt_data;
    }

    public function cryptData($data)
    {
        if($data == null || count($data) == 0) {
            $this->{$this->_cryptable} = null;
            $this->_crypt_data = null;
            return;
        }

        // print_r($data);
        $jsonText = json_encode($data);
        // AES-256-CBC
        try {
            $encryptValue = Crypt::encryptString($jsonText);
            $this->{$this->_cryptable} = $encryptValue;
            $this->_crypt_data = null;
        } catch (\Exception $e) {
            logger($e->getTraceAsString());
            $this->{$this->_cryptable} = null;
            $this->_crypt_data = null;
        }
    }

    public function getAttribute($key)
    {
        if (in_array($key, $this->encryptable)) {
            return $this->getEncryptValue($key);
        }
        return parent::getAttribute($key);
    }

    private function getEncryptValue($key)
    {
        if (in_array($key, $this->encryptable)) {
            $data = $this->getCryptData();
            if(isset($data[$key])) return $data[$key];
            return null;
        }
        return null;
    }

    public function setAttribute($key, $value)
    {
        // logger('--------EncrypUser------');
        if (in_array($key, $this->encryptable)) {
            $data = $this->getCryptData();
            if($value) $data[$key] = $value;
            $this->cryptData($data);
        }
        else parent::setAttribute($key, $value);
    }
}