<?php

class Valid {

	public static function getOwnAccounts(){
		$accountCurrency = array();
		$accountCurrency['44513401'] = 'EUR';
		$accountCurrency['44513402'] = 'EUR';
		$accountCurrency['44513403'] = 'EUR';
		$accountCurrency['44513404'] = 'EUR';
		$accountCurrency['33049957'] = 'GBP';
		$accountCurrency['73119157'] = 'GBP';
		$accountCurrency['73796558'] = 'GBP';
		$accountCurrency['44513405'] = 'USD';
		$accountCurrency['44513406'] = 'USD';

		$accountCurrency['IE86BARC99021244513401'] = 'EUR';
		$accountCurrency['IE59BARC99021244513402'] = 'EUR';
		$accountCurrency['GB17BARC20060544067333'] = 'EUR';

		$accountCurrency['GB66BARC20035373119157'] = 'GBP';

		return $accountCurrency;
	}

	public static function getLDC()
	{
		$accountCurrency = array();
		$accountCurrency['IE59BARC99021244513402'] = 'EUR';
		$accountCurrency['IE86BARC99021244513401'] = 'EUR';
		return $accountCurrency;
	}

	public static function not_empty($value)
	{
		if (is_object($value) AND $value instanceof ArrayObject)
		{
			// Get the array from the ArrayObject
			$value = $value->getArrayCopy();
		}

		// Value cannot be NULL, FALSE, '', or an empty array
		return ! in_array($value, array(NULL, FALSE, '', array()), TRUE);
	}


	public static function min_length($value, $length)
	{
		return mb_strlen($value) >= $length;
	}

	public static function max_length($value, $length)
	{
		return mb_strlen($value) <= $length;
	}

	public static function equals($value, $required)
	{
		return ($value === $required);
	}

	public static function in_values($value, array $required)
	{
		return in_array($value,$required);
	}

	public static function digit($str, $utf8 = FALSE)
	{
		if ($utf8 === TRUE)
		{
			return (bool) preg_match('/^\pN++$/uD', $str);
		}
		else
		{
			return (is_int($str) AND $str >= 0) OR ctype_digit($str);
		}
	}

	public static function numeric($str)
	{
		// Get the decimal point for the current locale
		list($decimal) = array_values(localeconv());

		// A lookahead is used to make sure the string contains at least one digit (before or after the decimal point)
		return (bool) preg_match('/^-?+(?=.*[0-9])[0-9]*+'.preg_quote($decimal).'?+[0-9]*+$/D', (string) $str);
	}

	public static function range($number, $min, $max, $step = NULL)
	{
		if ($number <= $min OR $number >= $max)
		{
			// Number is outside of range
			return FALSE;
		}

		if ( ! $step)
		{
			// Default to steps of 1
			$step = 1;
		}

		// Check step requirements
		return (($number - $min) % $step === 0);
	}

	public static function decimal($str, $places = 2, $digits = NULL)
	{
		if ($digits > 0)
		{
			// Specific number of digits
			$digits = '{'.( (int) $digits).'}';
		}
		else
		{
			// Any number of digits
			$digits = '+';
		}

		// Get the decimal point for the current locale
		list($decimal) = array_values(localeconv());

		return (bool) preg_match('/^[+-]?[0-9]'.$digits.preg_quote($decimal).'[0-9]{'.( (int) $places).'}$/D', $str);
	}

	public static function exact_length($value, $length)
	{
		if (is_array($length))
		{
			foreach ($length as $strlen)
			{
				if (mb_strlen($value) === $strlen)
					return TRUE;
			}
			return FALSE;
		}

		return mb_strlen($value) === $length;
	}

	public static function check_account_currency($account,Transaction $object){
		$account = trim($account);

		$accountCurrency = self::getOwnAccounts();
		$ldc = self::getLDC();

		if(array_key_exists($account, $ldc))
		{
			return true;
		}

		if(array_key_exists($account,$accountCurrency)){
			return $accountCurrency[$account]==$object->getData('32A.currency');
		}
	}

	public static function check_account($account){
		return array_key_exists(trim($account),self::getOwnAccounts());
	}

	public static function check_account_if_not_iban($account){
		$account = trim($account);
		if(strlen($account)>8){
			return true;
		}
		return array_key_exists($account,self::getOwnAccounts());
	}

	public static function batch_transactions_count(array $transactions, $count){
		if(count($transactions)>$count){
			return false;
		}
	}

	public static function transaction_sequence(array $transactions){
		for($i=0;$i<count($transactions);$i++){
			if($transactions[$i]->getTransactionId()!=($i+1)){
				return 'Incorrect '. ($i+1).' transaction';
			}
		}
		return true;
	}

	public static function batch_sequence(array $batches){
		$prevBatchNumber = null;
		foreach($batches as $batch){
			$batchNumber = $batch->getId();
			if($prevBatchNumber==null){
				$prevBatchNumber = $batchNumber;
				continue;
			}
			$neededBtachNumber = $batchNumber-1;
			if($neededBtachNumber!=$prevBatchNumber){
				return 'Incorrect '. $neededBtachNumber.' batch';
			}
			$prevBatchNumber = $batchNumber;
		}
		return true;
	}

	public static function positive_value($value){
		return ($value>0);
	}

	public static function avoid_same_account($value, $field, Transaction $object){
		return ($value != $object->getData($field));
	}
} // End Valid