domotz-remote-pawn/src/commands/saveFile.js

Domotz Agent

/** This file is part of Domotz Agent.
  * Copyright (C) 2016  Domotz Ltd
  *
  * Domotz Agent 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.
  *
  * Domotz Agent 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 Domotz Agent. If not, see <http://www.gnu.org/licenses/>.
  **/

/**
 * Created by Tommaso Latini <tommaso@domotz.com> on 30/12/15.
 *
 * Command by remote:
 * {
 *    "path": <str>             path of the destination file
 *    "relative": <boolean>     true if the path is relative to DOMOTZ ROOT DIR
 *                              false if the path is absolute
 *    "content": <str>          content of the file
 * }
 *
 * N.B fileUtils.writeFile was designed to write small and text file
 * (magnitude of KB)
 */

var saveFile = function (message, resourceLocator) {

    var fileUtils = resourceLocator.utils.file;
    var join = resourceLocator.path.join;

    var payload = message.payload;

    var absPath = join(process.env.DOMOTZ_ROOT_DIR, payload.path);
    var content = new Buffer(payload.content, 'base64');

    return {
        describe: function () {
            return message.correlationId + " - saveFile - " +
                "Path: " + absPath + ". " +
                "Content Length: " + content.length;
        },
        execute: function (callback) {
            fileUtils.writeFile(absPath, content, true)
                .finally(callback);

        }
    };
};

module.exports.command = saveFile;