<?php

/**
 * validator - Transaction.php
 *
 * Initial version by: MisterX
 * Initial version created on: 09.12.2015
 */
class Transaction implements ValidationData
{

	const REGEXP = '|:(\w*):([^:]*)|im';
	protected $raw = array();
	protected $source = '';

	protected $values = array();
	protected $errors=array();

	function __construct($string=null)
	{
		if($string!==null){
			$this->parseFromString($string);
		}
	}

	/**
	 * @return string
	 */
	public function getSource()
	{
		return $this->source;
	}



	public function parseFromString($string){
		$result = array();
		$this->source = $string;
		preg_match_all(self::REGEXP,$string,$result);
		foreach($result[1] as $index=>$field){
			$value = trim($result[2][$index]);
			$this->values['raw'][$field] = $value;

			$parserMethod = 'parse'.strtoupper($field);
			if(method_exists($this,$parserMethod)){
				$this->values['data'][$field] = $this->{$parserMethod}($value);
			}else{
				$this->values['data'][$field] = $value;
			}
		}
	}

	public function isBatch(){
		return (bool)$this->getBatchNumber();
	}

	public function getAmount(){
		return  $this->getData('32A.amount');
	}

	public function getCurrency(){
		return  $this->getData('32A.currency');
	}

	public function getBatchNumber(){
		return isset($this->values['data']['20']['batch'])?$this->values['data']['20']['batch']:null;
	}

	public function getTransactionId(){
		return $this->getData('70.number');
	}

	public function getAccountFrom()
    {
        return $this->getData('50A');
    }

    public function getAccountTo()
    {
        return $this->getData('59.account');
    }

	protected function parse32A($data){
		$return = array('date'=>null,'currency'=>null,'amount'=>null);
		$results = array();
		preg_match_all('|([\d]{6})([A-Z]{3})(.*)|i',$data,$results);
		if(count($results)!=4 or !count($results[0])){
			return $return;
		}
		//Change comma
		$amount = str_ireplace(',','.',$results[3][0]);
		return array('date'=>$results[1][0],'currency'=>$results[2][0],'amount'=>(float)$amount);
	}

	protected function parse50A($data){
		return ltrim($data,'/');
	}

	protected function parse57D($data){
		return ltrim($data,'/');
	}

	protected function parse59($data){
		$data = $this->parse50A($data);
		$result = explode("\n",$data,2);
		if(count($result)==2){
			return array('account'=>trim($result[0]),'name'=>trim($result[1]));
		}else{
			return array('account'=>trim($result[0]),'name'=>null);
		}
	}

	protected function parse70($data){
		$results = array();
		preg_match_all('|([\S\s]*)\/([\d]*)|',$data,$results);
		if(count($results)!=3){
			return null;
		}
		return array('number'=>$results[2][0],'reference'=>$results[1][0]);
	}

	protected function parse20($data){
		$result = explode('/',$data);
		if(count($result)==2){
			list($reference,$batch) = $result;
		}else{
			$reference = $result[0];
			$batch = '';
		}

		return array('batch'=>trim($batch),'reference'=>trim($reference));
	}

	public function getFieldValue($field)
	{
		return $this->getByPath($field,$this->values);
	}

	protected function getByPath($path,$values){
		$exploded = explode('.',$path);
		$temp = $values;
		foreach($exploded as $key) {
			$temp = &$temp[$key];
		}
		return $temp;
	}

	public function getData($field){
		return $this->getByPath($field,$this->values['data']);
	}
	public function getRaw($field){
		return $this->getByPath($field,$this->values['raw']);
	}

	public function setErrors(array $errors)
	{
		$this->errors = $errors;
	}

	public function getErrors()
	{
		return $this->errors;
	}

	public function hasErrors()
	{
		return (bool)$this->errors;
	}
}