<?php

namespace App\PdfExport;

use Qs_ViewController;
use Exception;

abstract class AbstractView extends Qs_ViewController
{
    const ACTION_EXPORT   = 'export';
    const ACTION_VIEW     = 'view';

    protected $_actions = [self::ACTION_EXPORT, self::ACTION_VIEW];

    public function exec()
    {
        $this->_action = $this->getRestParam(0);
        if (!in_array($this->_action, $this->_actions)) {
            throw new Exception('Unsupported action ' . $this->_action);
        }
        $this->_callAction();
    }

    protected function _doExport()
    {
        $tool = $this->getPdfExportTool();
        $tool->setPdfFactoryCallback([$this, 'createPdf']);
        $tool->export();
        exit;
    }

    protected function _doView()
    {
        if (false === constant('DEBUG')) {
            $this->_do404();
        }
        $id = $this->getRestParam(1);
        $this->createPdf($id, 'view.pdf', true);
        exit;
    }

    /**
     * @return Tool
     */
    abstract protected function getPdfExportTool();

    abstract public function createPdf($id, $file, $output = false);

    public static function getExportUrl()
    {
        return self::getPage('url') . '/' . self::ACTION_EXPORT;
    }

    public static function getViewUrl()
    {
        return self::getPage('url') . '/' . self::ACTION_VIEW;
    }
}