medium.dry.example.3.php

<?php

final class ProduceAccountStatementHandler
{
  private $accountFinder;
  private $pdfGenerator;
  private $accountTotalCalculator;
  
  public function __construct(
    AccountFinder $accountFinder,
    PdfGenerator $pdfGenerator,
    AccountTotalCalculator $accountTotalCalculator
  ) {
    $this->accountFinder = $accountFinder;
    $this->pdfGenerator = $pdfGenerator;
    $this->accountTotalCalculator = $accountTotalCalculator;
  }
  
  public function handle(Command $command): void
  {
    $account = $this->accountFinder->byId($command->accountId());
    $accountTotal = $this->accountTotalCalculator->calculate($account);
    $this->pdfGenerator->generate('account-statement.template', $account, $accountTotal);
  }
}

final class ProducePaymentOverdueNoticeHandler
{
  private $accountFinder;
  private $pdfGenerator;
  private $accountTotalCalculator;
  
  public function __construct(
    AccountFinder $accountFinder,
    PdfGenerator $pdfGenerator,
    AccountTotalCalculator $accountTotalCalculator
  ) {
    $this->accountFinder = $accountFinder;
    $this->pdfGenerator = $pdfGenerator;
    $this->accountTotalCalculator = $accountTotalCalculator;
  }
  
  public function handle(Command $command): void
  {
    $account = $this->accountFinder->byId($command->accountId());
    $accountTotal = $this->accountTotalCalculator->calculate($account);
    $this->pdfGenerator->generate('payment-overdue-notice.template', $account, $accountTotal);
  }
}