ai.susi.server.api.cms.AppsService.java Source code

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Here is the source code for ai.susi.server.api.cms.AppsService.java

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/**
 *  AppsServlet
 *  Copyright 08.01.2016 by Michael Peter Christen, @0rb1t3r
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *  
 *  This library 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
 *  Lesser General Public License for more details.
 *  
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program in the file lgpl21.txt
 *  If not, see <http://www.gnu.org/licenses/>.
 */

package ai.susi.server.api.cms;

import java.io.File;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.util.HashSet;
import java.util.Set;

import org.eclipse.jetty.util.log.Log;
import org.json.JSONArray;
import org.json.JSONObject;

import ai.susi.DAO;
import ai.susi.json.JsonObjectWithDefault;
import ai.susi.server.APIException;
import ai.susi.server.APIHandler;
import ai.susi.server.AbstractAPIHandler;
import ai.susi.server.Authorization;
import ai.susi.server.BaseUserRole;
import ai.susi.server.Query;

import javax.servlet.http.HttpServletResponse;

public class AppsService extends AbstractAPIHandler implements APIHandler {

    private static final long serialVersionUID = -2577184683745091648L;

    @Override
    public String getAPIPath() {
        return "/cms/apps.json";
    }

    @Override
    public BaseUserRole getMinimalBaseUserRole() {
        return BaseUserRole.ANONYMOUS;
    }

    @Override
    public JSONObject getDefaultPermissions(BaseUserRole baseUserRole) {
        return null;
    }

    @Override
    public JSONObject serviceImpl(Query query, HttpServletResponse response, Authorization auth,
            final JsonObjectWithDefault permissions) throws APIException {

        String categorySelection = query.get("category", "");

        // generate json
        File apps = new File(DAO.html_dir, "apps");
        JSONObject json = new JSONObject(true);
        JSONArray app_array = new JSONArray();
        json.put("apps", app_array);
        JSONObject categories = new JSONObject(true);
        for (String appname : apps.list())
            try {
                // read app and verify the structure of the app
                File apppath = new File(apps, appname);
                if (!apppath.isDirectory())
                    continue;
                Set<String> files = new HashSet<>();
                for (String f : apppath.list())
                    files.add(f);
                if (!files.contains("index.html"))
                    continue;
                if (!files.contains("app.json"))
                    continue;
                File json_ld_file = new File(apppath, "app.json");
                String jsonString = new String(Files.readAllBytes(json_ld_file.toPath()), StandardCharsets.UTF_8);
                JSONObject json_ld = new JSONObject(jsonString);

                // translate permissions
                if (json_ld.has("permissions")) {
                    String p = json_ld.getString("permissions");
                    String[] ps = p.split(",");
                    JSONArray a = new JSONArray();
                    for (String s : ps)
                        a.put(s);
                    json_ld.put("permissions", a);
                }

                // check category
                if (json_ld.has("applicationCategory") && json_ld.has("name")) {
                    String cname = json_ld.getString("applicationCategory");
                    if (categorySelection.length() == 0 || categorySelection.equals(cname))
                        app_array.put(json_ld);
                    String aname = json_ld.getString("name");
                    if (!categories.has(cname))
                        categories.put(cname, new JSONArray());
                    JSONArray appnames = categories.getJSONArray(cname);
                    appnames.put(aname);
                }
            } catch (Throwable e) {
                Log.getLog().warn(e);
            }
        // write categories
        json.put("categories", categories.keySet().toArray(new String[categories.length()]));
        json.put("category", categories);

        return json;
    }
}