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<?php
/*
 "Contact Form to Database" Copyright (C) 2011-2012 Michael Simpson (email : michael.d.simpson@gmail.com)

This file is part of Contact Form to Database.

Contact Form to Database is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

Contact Form to Database is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

You should have received a copy of the GNU General Public License
 along with Contact Form to Database.
 If not, see <http://www.gnu.org/licenses/>.
*/

require_once('ExportBase.php');
require_once('CFDBExport.php');

class ExportToHtmlTemplate extends ExportBase implements CFDBExport {

/**
     * @param $formName string
     * @param $options array of option_name => option_value
     * @return void|string
     */
    public function export($formName, $options = null) {
        $this->setOptions($options);
        $this->setCommonOptions(true);

$filelinks = '';
        $wpautop = false;
        $stripBR = false;
        if ($this->options && is_array($this->options)) {
            if (isset($this->options['filelinks'])) {
                $filelinks = $this->options['filelinks'];
            }
            if (isset($this->options['wpautop'])) {
                $wpautop = $this->options['wpautop'] == 'true';
            }
            if (isset($this->options['stripbr'])) {
                $stripBR = $this->options['stripbr'] == 'true';
            }
        }

// Security Check
        if (!$this->isAuthorized()) {
            $this->assertSecurityErrorMessage();
            return;
        }

// Headers
        $this->echoHeaders('Content-Type: text/html; charset=UTF-8');

if (empty($options) || !isset($options['content'])) {
            return;
        }

if ($this->isFromShortCode) {
            ob_start();
        }

// Get the data
        $submitTimeKeyName = 'Submit_Time_Key';
        $this->setDataIterator($formName, $submitTimeKeyName);

$matches = array();
        preg_match_all('/\$\{([^}]+)\}/', $options['content'], $matches);

$colNamesToSub = array();
        $varNamesToSub = array();
        if (!empty($matches) && is_array($matches[1])) {
            foreach ($matches[1] as $aSubVar) {
                // Each is expected to be a name of a column
                if (in_array($aSubVar, $this->dataIterator->displayColumns)) {
                    $colNamesToSub[] = $aSubVar;
                    $varNamesToSub[] = '${' . $aSubVar . '}';
                }
                else if ($aSubVar == 'submit_time') {
                    $colNamesToSub[] = 'submit_time';
                    $varNamesToSub[] = '${submit_time}';
                }
            }
        }

// WordPress likes to wrap the content in content which messes up things when
 // you are putting
 // <tr><td>stuff<td></tr>
 // as the content because it comes out
 // <tr><td>stuff<td></tr>
 // which messed up the table html.
 // So we try to identify that and strip it out.
 // This is related to http://codex.wordpress.org/Function_Reference/wpautop
 // see also http://wordpress.org/support/topic/shortcodes-are-wrapped-in-paragraph-tags?replies=4
 if (!$wpautop) {
 //echo 'Initial: \'' . htmlentities($options['content']) . '\'';
 if (substr($options['content'], 0, 6) == ' ' &&
 substr($options['content'], -3, 3) == '') {
 $options['content'] = substr($options['content'], 6, strlen($options['content']) - 6 - 3);
 }
 if (substr($options['content'], 0, 4) == '' &&
 substr($options['content'], -3, 3) == '') {
 $options['content'] = substr($options['content'], 4, strlen($options['content']) - 4 - 3);
 }
 //echo ' Stripped: \'' . htmlentities($options['content']) . '\'';
 }

if ($stripBR) {
 // Strip out BR tags presumably injected by wpautop
 $options['content'] = str_replace(' ', '', $options['content']);
 }

// Evaluation IF-expressions
        // todo: modify $options['content']

while ($this->dataIterator->nextRow()) {
            // Evaluation IF-expressions
            // todo: modify $options['content']

if (empty($colNamesToSub)) {
 // Process nested short codes
 echo do_shortcode($options['content']);
 }
 else {
 $fields_with_file = null;
 if ($filelinks != 'name' &&
 isset($this->dataIterator->row['fields_with_file']) &&
 $this->dataIterator->row['fields_with_file'] != null) {
 $fields_with_file = explode(',', $this->dataIterator->row['fields_with_file']);
 }
 $replacements = array();
 foreach ($colNamesToSub as $aCol) {
 if ($fields_with_file && in_array($aCol, $fields_with_file)) {
 switch ($filelinks) {
 case 'url':
 $replacements[] = $this->plugin->getFileUrl($this->dataIterator->row[$submitTimeKeyName], $formName, $aCol);
 break;
 case 'link':
 $replacements[] =
 '<a href="' .
 $this->plugin->getFileUrl($this->dataIterator->row[$submitTimeKeyName], $formName, $aCol) .
 '">' .
 htmlentities($this->dataIterator->row[$aCol], null, 'UTF-8') .
 '</a>';
 break;
 case 'image':
 case 'img':
 $replacements[] =
 '<img src="' .
 $this->plugin->getFileUrl($this->dataIterator->row[$submitTimeKeyName], $formName, $aCol) .
 '" alt="' .
 htmlentities($this->dataIterator->row[$aCol], null, 'UTF-8') .
 '" />';
 break;
 case 'name':
 default:
 $replacements[] = htmlentities($this->dataIterator->row[$aCol], null, 'UTF-8');
 }
 }
 else {
 $replacements[] = htmlentities($this->dataIterator->row[$aCol], null, 'UTF-8');
 }
 }
 // Preserve line breaks in the field
 foreach ($replacements as $i => $repl) {
 $replacements[$i] = nl2br($replacements[$i]); // preserve line breaks
 }
 // Process nested short codes
 echo do_shortcode(str_replace($varNamesToSub, $replacements, $options['content']));
 }
 }

if ($this->isFromShortCode) {
            // If called from a shortcode, need to return the text,
            // otherwise it can appear out of order on the page
            $output = ob_get_contents();
            ob_end_clean();
            return $output;
        }

}