/**
 * Copyright 2014 IBM Corp.
 *
 * 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.
 **/

var RED = require(process.env.NODE_RED_HOME+"/red/red");
var nma = require('nma');
var util = require('util');

function NMANode(n) {
    RED.nodes.createNode(this,n);
    this.title = n.title;
    var credentials = RED.nodes.getCredentials(n.id);
    if ((credentials) && (credentials.hasOwnProperty("pushkey"))) { this.pushkey = credentials.pushkey; }
    else { this.error("No NMA API key set"); }
    var node = this;
    this.on("input",function(msg) {
        var titl = this.title||msg.topic||"Node-RED";
        if (typeof(msg.payload) === 'object') {
            msg.payload = JSON.stringify(msg.payload);
        }
        else { msg.payload = msg.payload.toString(); }
        if (node.pushkey) {
            try {
                nma(node.pushkey, "Node-RED", titl, msg.payload, 0 );
            } catch (e) {
                node.warn("NMA error: "+ e);
            }
        }
        else {
            node.warn("NMA credentials not set.");
        }
    });
}

RED.nodes.registerType("nma",NMANode);

var querystring = require('querystring');

RED.httpAdmin.get('/nma/:id',function(req,res) {
    var credentials = RED.nodes.getCredentials(req.params.id);
    if (credentials) {
        res.send(JSON.stringify({hasPassword:(credentials.pushkey&&credentials.pushkey!="")}));
    } else {
        res.send(JSON.stringify({}));
    }
});

RED.httpAdmin.delete('/nma/:id',function(req,res) {
    RED.nodes.deleteCredentials(req.params.id);
    res.send(200);
});

RED.httpAdmin.post('/nma/:id',function(req,res) {
    var body = "";
    req.on('data', function(chunk) {
        body+=chunk;
    });
    req.on('end', function(){
        var newCreds = querystring.parse(body);
        var credentials = RED.nodes.getCredentials(req.params.id)||{};
        if (newCreds.pushkey == "") {
            delete credentials.pushkey;
        } else {
            credentials.pushkey = newCreds.pushkey||credentials.pushkey;
        }
        RED.nodes.addCredentials(req.params.id,credentials);
        res.send(200);
    });
});