<?php

class App_Settings_Revision_View extends Qs_ViewController
{
    protected $_actions = ['edit', 'update'];
    protected $_file;

    protected function _init()
    {
        parent::_init();
        $this->_file = WWW_PATH . '/rev';
        if (false === $this->_doc->getAuth()->getSuMode()) {
            $this->redirect(BASE_URL . '/admin');
        }
        return $this;
    }

    protected function _doEdit()
    {
        $form = $this->_getEditForm();
        $data = [];
        if (file_exists($this->_file)) {
            $data['revision'] = (int) file_get_contents($this->_file);
        }
        $form->setDefaults($data);
        $this->_addFormItem($form);
        return $this;
    }

    protected function _doUpdate()
    {
        $form = $this->_getEditForm();
        if ($form->validate()) {
            $revision = $form->getValue('revision');
            if ($revision) {
                file_put_contents($this->_file, $revision);
            } else {
                if (file_exists($this->_file)) {
                    unlink($this->_file);
                }
            }
            $this->_postUpdate();
            $this->_setBackMessage('Revision has been updated');
            $this->_doBack();
        } else {
            $this->_addFormItem($form);
        }
        return $this;
    }
}