/**
* Compare page versions
*
* @param void
* @return null
*/
function compare_versions()
{
$this->skip_layout = $this->request->isAsyncCall();
if ($this->active_page->isNew()) {
$this->httpError(HTTP_ERR_NOT_FOUND);
}
// if
// Load new version
$new_version_string = $this->request->get('new');
if (empty($new_version_string) || $new_version_string == 'latest') {
$new_version = $this->active_page;
$new_version_string = 'latest';
} else {
$new_version = PageVersions::findById(array('page_id' => $this->active_page->getId(), 'version' => $new_version_string));
}
// if
if (!instance_of($new_version, 'Page') && !instance_of($new_version, 'PageVersion')) {
$this->httpError(HTTP_ERR_NOT_FOUND);
}
// if
// Load old version
$old_version_string = $this->request->get('old');
if (empty($old_version_string)) {
$old_version = PageVersions::findPrevious($this->active_page);
if ($old_version) {
$old_version_string = $old_version->getVersion();
}
// if
} elseif ($old_version_string == 'latest') {
$old_version = $this->active_page;
} else {
$old_version = PageVersions::findById(array('page_id' => $this->active_page->getId(), 'version' => $old_version_string));
}
// if
if (!instance_of($old_version, 'Page') && !instance_of($old_version, 'PageVersion')) {
$this->httpError(HTTP_ERR_NOT_FOUND);
}
// if
// Lets do the diff
require_once ANGIE_PATH . '/classes/diff/init.php';
$name_diff = render_diff($old_version->getName(), $new_version->getName());
if (empty($name_diff)) {
$name_diff = $old_version->getName();
}
// if
$body_diff = render_diff(html_to_text($old_version->getFormattedBody()), html_to_text($new_version->getFormattedBody()));
if (empty($body_diff)) {
$body_diff = html_to_text($old_version->getFormattedBody());
}
// if
// Display
$this->smarty->assign(array('old_version_string' => $old_version_string, 'new_version_string' => $new_version_string, 'new_version' => $new_version, 'old_version' => $old_version, 'name_diff' => $name_diff, 'body_diff' => $body_diff));
js_assign('compare_pages_url', $this->active_page->getCompareVersionsUrl());
}
