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RobinMalfait/Account.php

Created June 11, 2015 08:22
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Revisions

  1. RobinMalfait created this gist Jun 11, 2015.
    78 changes: 78 additions & 0 deletions Account.php
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,78 @@
    <?php namespace KBC\Accounts;

    use KBC\Accounts\Events\AccountWasDeleted;
    use KBC\Accounts\Events\AccountWasOpened;
    use KBC\Accounts\Events\MoneyWasWithdrawn;
    use KBC\Accounts\Events\MoneyWasDeposited;
    use KBC\Core\BaseModel;

    final class Account extends BaseModel
    {
    public $name;

    public $balance;

    public $id;

    public function __construct($id)
    {
    $this->id = $id;
    }

    public static function open($id, Name $name)
    {
    $me = new static($id);
    $me->name = $name;
    $me->balance = 0;

    $me->apply(new AccountWasOpened($id, $name, 0));

    return $me;
    }

    public function delete()
    {
    $this->apply(new AccountWasDeleted($this->id));
    }

    public function deposit($amount)
    {
    $this->apply(new MoneyWasDeposited($this->id, $amount));
    }

    public function withdraw($amount)
    {
    $this->apply(new MoneyWasWithdrawn($this->id, $amount));
    }

    /* Respond to events */
    public static function applyAccountWasOpened($state, AccountWasOpened $event)
    {
    $state = new self($event->id);

    $state->balance = $event->balance;
    $state->name = $event->name;

    return $state;
    }

    public static function applyMoneyWasDeposited($state, MoneyWasDeposited $event)
    {
    $state->balance += $event->amount;

    return $state;
    }

    public static function applyMoneyWasWithdrawn($state, MoneyWasWithdrawn $event)
    {
    $state->balance -= $event->amount;

    return $state;
    }

    public static function applyAccountWasDeleted($state, AccountWasDeleted $event)
    {
    // This is basically deleting.
    return null;
    }
    }