/*
* #%L
* ACS AEM Commons Bundle
* %%
* Copyright (C) 2015 Adobe
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
package com.adobe.acs.commons.wcm.impl;
import java.util.Iterator;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ValueMap;
import org.apache.sling.commons.json.JSONArray;
import org.apache.sling.commons.json.JSONException;
import org.apache.sling.commons.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.day.cq.wcm.api.PageInfoProvider;
/**
* PageInfoProvider which filters the Workflow models available for a
* page based on a regular expression in the "applyTo" property on a workflow
* model's jcr:content node.
*
* Must run <b>after</b> <code>com.day.cq.wcm.core.impl.DefaultPageStatusProvider</code>
*/
@Component
@Service
public class WorkflowModelFilterPageInfoProvider implements PageInfoProvider {
private static final String KEY_MODELS = "models";
private static final String KEY_MODEL_PATH = "wid";
private static final String KEY_WORKFLOWS = "workflows";
private static final String PN_ALLOWED_PATHS = "allowedPaths";
private static final Logger log = LoggerFactory.getLogger(WorkflowModelFilterPageInfoProvider.class);
@Override
public void updatePageInfo(SlingHttpServletRequest request, JSONObject info, Resource resource)
throws JSONException {
if (info.has(KEY_WORKFLOWS)) {
final JSONObject workflows = info.getJSONObject(KEY_WORKFLOWS);
final String resourcePath = resource.getPath();
final ResourceResolver resourceResolver = resource.getResourceResolver();
for (final Iterator<String> types = workflows.keys(); types.hasNext();) {
final String type = types.next();
final JSONObject typeObject = workflows.getJSONObject(type);
filter(typeObject, resourcePath, resourceResolver);
}
} else {
log.warn("No workflows found in existing page info. Check order of cq:infoProviders.");
}
}
private void filter(JSONObject typeObject, String resourcePath, ResourceResolver resourceResolver) throws JSONException {
final JSONArray models = typeObject.getJSONArray(KEY_MODELS);
final JSONArray newModels = new JSONArray();
for (int i = 0; i < models.length(); i++) {
final JSONObject modelObject = models.getJSONObject(i);
final String path = modelObject.getString(KEY_MODEL_PATH);
final Resource modelResource = resourceResolver.getResource(path);
if (modelResource != null) {
// we're looking for the appliesTo property on the jcr:content node, the wid value
// is the path to the jcr:content/model node.
final ValueMap properties = modelResource.getParent().getValueMap();
final String[] allowedPaths = properties.get(PN_ALLOWED_PATHS, String[].class);
if (allowedPaths == null) {
newModels.put(modelObject);
} else {
for (final String allowedPath : allowedPaths) {
if (resourcePath.matches(allowedPath)) {
newModels.put(modelObject);
break;
}
}
}
}
}
typeObject.put(KEY_MODELS, newModels);
}
}