<?php
namespace Contabilidad\Common\Service;

use Contabilidad\Common\Concept\DocumentHandler;

class CsvHandler extends DocumentHandler {
  public function load(): ?array {
    $folder = $this->folder;
    $files = new \DirectoryIterator($folder);
    $output = [];
    foreach ($files as $file) {
      if ($file->isDir() or $file->getExtension() != 'csv') {
        continue;
      }
      $bank = 'unknown';
      $text = trim(file_get_contents($file->getRealPath()));
      if (str_contains($text, 'SCOTIABANK')) {
        $bank = 'Scotiabank';
      }
      if (str_contains($text, 'BICE')) {
        $bank = 'BICE';
      }
      $data = explode(PHP_EOL, $text);
      array_walk($data, function(&$item) {
        $item = trim($item, '; ');
        if (str_contains($item, ';') !== false) {
          $item = explode(';', $item);
        }
      });
      $output []= ['bank' => $bank, 'filename' => $file->getBasename(), 'data' => $data];
    }
    return $this->build($output);
  }
  protected function build(array $data): ?array {
    return $data;
  }
}