<?php

abstract class App_Donate_AbstractView extends Qs_ViewController
{
    protected $_columns4ExportCsv;
    protected $_exportFileName = null;

    protected function _doExportCsv()
    {
        if ($this->dataObj->hasFilter()) {
            $form = $this->_getFilterForm();
            if ($form->validate()) {
                $this->dataObj->addFilter($form->getValues());
            }
        }
        $options = array();
        $options['order'] = array($this->list->getOrderBy());
        $stmt = $this->dataObj->getListStatement($options);
        $fp = fopen('php://output', 'w');

        header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
        header('Last-Modified: ' . gmdate('D,d M YH:i:s') . ' GMT');
        header('Cache-Control: no-cache, must-revalidate');
        header('Pragma: no-cache');
        header('Content-type: text/comma-separated-values');
        header('Content-Disposition: attachment; filename="' . $this->_getExportFileName() . '"');
        $columns = $this->_getColumns4ExportCsv();
        fputcsv($fp, $columns);
        $blankRow = array_combine(array_keys($columns), array_fill(0, count($columns), ''));
        while ($row = $stmt->fetch()) {
            $row = $this->_getRow4ExportCsv($row);
            $row = array_intersect_key($row, $columns);
            $row = array_merge($blankRow, $row);
            fputcsv($fp, $row);
        }
        fclose($fp);
        exit;
    }

    protected function _getExportFileName()
    {
        if (null == $this->_exportFileName) {
            $this->_exportFileName = $this->dataObj->itemsName . ' ' . date('M d Y g:i A') .  '.csv';
        }
        return $this->_exportFileName;
    }

    protected function _getColumns4ExportCsv()
    {
        if (null === $this->_columns4ExportCsv) {
            $this->_columns4ExportCsv = array(
                'added'       => 'Submitted',
                'donateType'  => 'Donation Type',
                'name'        => 'Name',
                'address'     => 'Address',
                'city'        => 'City',
                'state'       => 'State',
                'zip'         => 'Zip',
                'needs'       => 'I wish to donate to a specific need',
                'totalAmount' => 'Total donation amount'
            );

            $fields = array_keys(Qs_Array::exclude(
                $this->dataObj->table->getMetaData(),
                'id', 'added', 'donateType', 'changed', 'needs', 'totalAmount', 'name', 'address', 'city', 'state', 'zip'
            ));
            foreach ($fields as $field) {
                $this->_columns4ExportCsv[$field] = ucfirst(preg_replace('/([a-z])([A-Z])/', '$1 $2', $field));
            }

        }
        return $this->_columns4ExportCsv;
    }

    protected function _getRow4ExportCsv(&$data)
    {
        $row = str_replace(array("\n", "\r"), ' ', $data);
        return $row;
    }

    protected function _getMailData(array $data)
    {
        throw new Qs_Exception('_getMailData() not implemented');
    }

    protected function _getFilterFields()
    {
        if (null === $this->_filterFields) {
            $this->_filterFields = $this->dataObj->getFilterFields();
            $this->_filterFields = array_flip($this->_filterFields);
            $columns = $this->_getColumns4ExportCsv();
            $this->_filterFields = array_intersect_key($columns, $this->_filterFields);
        }
        return $this->_filterFields;
    }
}