/**
* Calculate the checksum of the file
* As defined in the UOB documentation
* @return String
*/
public function getCheckSum()
{
$headers = [];
$checksum = 0;
$hashcode_index = 1;
$record_no = 1;
$lines = [];
$batch_header = new UOBBatchHeader($this->beneficiaries, $this->configKey);
$lines[] = $batch_header->getLine();
foreach ($this->beneficiaries as $beneficiary) {
$beneficiary_lines = UOBBeneficiaryFactory::create($beneficiary, $this->configKey);
$lines[] = collect($beneficiary_lines->getLines())->first();
}
$batch_trailer = new UOBBatchTrailer($this->beneficiaries, $this->configKey);
$lines[] = $batch_trailer->getLine();
foreach ($lines as $line) {
// printf("\nLine with value %s has length of %d", substr($line -> getString(),0, 100), strlen($line -> getString()));
$string = $line->getString();
$record_no++;
$column_no = 1;
for ($i = 0; $i < 900; $i++) {
$byte_code = ord($string[$i]);
if ($hashcode_index > 23) {
$hashcode_index = 1;
}
$checksum += $record_no + ($record_no + $column_no) * $byte_code * $this->getHashCodeArray($hashcode_index);
$hashcode_index++;
$column_no++;
}
}
return $checksum;
}
/**
* @param Collection of entries to be passed into the adapter
* @param String The config key to read from
* @param Int The sequence number for file name generation. If multiple files are generated in a day, this number should be incremented.
* @return COSUploadProcessor
*/
public static function create($beneficiaries, $config_key, $sequence_number = 1)
{
$config = new Repository(config($config_key));
$adapter_class = $config['beneficiary_adapter'];
$beneficiaries = $beneficiaries->map(function ($payment) use($adapter_class) {
return new $adapter_class($payment);
})->toArray();
$beneficiary_lines = collect($beneficiaries)->map(function (BeneficiaryAdapterInterface $beneficiary) use($config_key) {
return UOBBeneficiaryFactory::create($beneficiary, $config_key);
})->toArray();
$cos = new COSUploadProcessor($beneficiaries, $config_key);
$file_name = static::getFileName($sequence_number);
$cos->setFileName($file_name);
$cos->setFileExtension('txt');
$file_header = new UOBFileHeader($beneficiaries, $config_key);
$file_header->setFileName($file_name);
//UOB uses fixed length strings, so no column delimiters are needed
$file_header->setColumnDelimiter("");
$batch_header = new UOBBatchHeader($beneficiaries, $config_key);
$batch_header->setColumnDelimiter("");
$batch_trailer = new UOBBatchTrailer($beneficiaries, $config_key);
$batch_trailer->setColumnDelimiter("");
$cos->setFileHeader($file_header);
$cos->setBatchHeader($batch_header);
$cos->setBatchTrailer($batch_trailer);
$cos->setBeneficiaryLines($beneficiary_lines);
$cos->setIdentifier($file_header->getCheckSum());
return $cos;
}