<?php
/**
 * Update a snippet
 *
 * @param integer $id The ID of the snippet
 * @param string $name The name of the snippet
 * @param string $snippet The code of the snippet.
 * @param string $description (optional) A brief description.
 * @param integer $category (optional) The category to assign to. Defaults to no
 * category.
 * @param boolean $locked (optional) If true, can only be accessed by
 * administrators. Defaults to false.
 * @param json $propdata (optional) A json array of properties
 *
 * @package modx
 * @subpackage processors.element.snippet
 */
if (!$modx->hasPermission('save_snippet')) return $modx->error->failure($modx->lexicon('permission_denied'));
$modx->lexicon->load('snippet','category');

/* get snippet */
if (empty($scriptProperties['id'])) return $modx->error->failure($modx->lexicon('snippet_err_ns'));
$snippet = $modx->getObject('modSnippet',$scriptProperties['id']);
if ($snippet == null) return $modx->error->failure($modx->lexicon('snippet_err_nf'));

if (!$snippet->checkPolicy('save')) {
    return $modx->error->failure($modx->lexicon('access_denied'));
}

/* check if locked, if so, prevent access */
if ($snippet->get('locked') && $modx->hasPermission('edit_locked') == false) {
    return $modx->error->failure($modx->lexicon('snippet_err_locked'));
}

/* validation */
if (empty($scriptProperties['name'])) {
    $modx->error->addField('name',$modx->lexicon('snippet_err_ns_name'));
}

/* check to see if name already exists */
$nameExists = $modx->getObject('modSnippet',array(
    'id:!=' => $snippet->get('id'),
    'name' => $scriptProperties['name'],
));
if ($nameExists) $modx->error->addField('name',$modx->lexicon('snippet_err_exists_name',array('name' => $scriptProperties['name'])));

/* category */
if (!empty($scriptProperties['category'])) {
    $category = $modx->getObject('modCategory',array('id' => $scriptProperties['category']));
    if ($category == null) $modx->error->addField('category',$modx->lexicon('category_err_nf'));
}

/* set fields */
$previousCategory = $snippet->get('category');
$snippet->fromArray($scriptProperties);
$snippet->set('locked',!empty($scriptProperties['locked']));

/* validate */
if (!$snippet->validate()) {
    $validator = $snippet->getValidator();
    if ($validator->hasMessages()) {
        foreach ($validator->getMessages() as $message) {
            $modx->error->addField($message['field'], $modx->lexicon($message['message']));
        }
    }
}

/* if has errors, return */
if ($modx->error->hasError()) {
    return $modx->error->failure();
}

/* invoke OnBeforeSnipFormSave event */
$OnBeforeSnipFormSave = $modx->invokeEvent('OnBeforeSnipFormSave',array(
    'mode' => modSystemEvent::MODE_UPD,
    'id' => $snippet->get('id'),
    'snippet' => &$snippet,
));
if (is_array($OnBeforeSnipFormSave)) {
    $canSave = false;
    foreach ($OnBeforeSnipFormSave as $msg) {
        if (!empty($msg)) {
            $canSave .= $msg."\n";
        }
    }
} else {
    $canSave = $OnBeforeSnipFormSave;
}
if (!empty($canSave)) {
    return $modx->error->failure($canSave);
}

/* save snippet */
if ($snippet->save() == false) {
    return $modx->error->failure($modx->lexicon('snippet_err_save'));
}

/* invoke OnSnipFormSave event */
$modx->invokeEvent('OnSnipFormSave',array(
    'mode' => modSystemEvent::MODE_UPD,
    'id' => $snippet->get('id'),
    'snippet' => &$snippet,
));

/* log manager action */
$modx->logManagerAction('snippet_update','modSnippet',$snippet->get('id'));

/* empty cache */
if (!empty($scriptProperties['clearCache'])) {
    $modx->cacheManager->refresh();
}

return $modx->error->success('',array_merge($snippet->get(array('id','name','description','category','locked')), array('previous_category' => $previousCategory)));