/**
 * Copyright 2013,2015 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.
 **/

module.exports = function(RED) {
    "use strict";
    var XMPP = require('simple-xmpp');

    function XMPPServerNode(n) {
    RED.nodes.createNode(this,n);
    this.server = n.server;
    this.port = n.port;
    this.nickname = n.nickname;
    var credentials = this.credentials;
    if (credentials) {
        this.username = credentials.user;
        this.password = credentials.password;
    }
}
    RED.nodes.registerType("xmpp-server",XMPPServerNode,{
    credentials: {
        user: {type:"text"},
        password: {type: "password"}
    }
});


    function XmppInNode(n) {
    RED.nodes.createNode(this,n);
    this.server = n.server;

    this.serverConfig = RED.nodes.getNode(this.server);
    this.host = this.serverConfig.server;
    this.port = this.serverConfig.port;
    this.nick = this.serverConfig.nickname || "Node-RED";
    this.userid = this.serverConfig.username;
    this.password = this.serverConfig.password;

    this.join = n.join || false;
    this.sendAll = n.sendObject;
    this.to = n.to || "";
    var node = this;

    var xmpp = new XMPP.SimpleXMPP();

    xmpp.on('online', function() {
        node.log('connected to '+node.host+":"+node.port);
        node.status({fill:"green",shape:"dot",text:"connected"});
        //xmpp.setPresence('online', node.nick+' online');
        if (node.join) {
            xmpp.join(node.to+'/'+node.nick);
        }
    });

    xmpp.on('chat', function(from, message) {
        var msg = { topic:from, payload:message };
        node.send([msg,null]);
    });

    xmpp.on('groupchat', function(conference, from, message, stamp) {
        var msg = { topic:from, payload:message, room:conference, ts:stamp };
        if (from != node.nick) { node.send([msg,null]); }
    });

    //xmpp.on('chatstate', function(from, state) {
    //console.log('%s is currently %s', from, state);
    //var msg = { topic:from, payload:state };
    //node.send([null,msg]);
    //});

    xmpp.on('buddy', function(jid, state, statusText) {
        node.log(jid+" is "+state+" : "+statusText);
        var msg = { topic:jid, payload: { presence:state, status:statusText} };
        node.send([null,msg]);
    });

    xmpp.on('error', function(err) {
        console.error("error",err);
    });

    xmpp.on('close', function() {
        node.log('connection closed');
        node.status({fill:"red",shape:"ring",text:"not connected"});
    });

    xmpp.on('subscribe', function(from) {
        xmpp.acceptSubscription(from);
    });

    // Now actually make the connection
    try {
        xmpp.connect({
            jid : node.userid,
            password : node.password,
            host : node.host,
            port : node.port,
            skipPresence : true,
            reconnect : false
        });
    } catch(e) {
        node.error("Bad xmpp configuration");
        node.status({fill:"red",shape:"ring",text:"not connected"});
    }

    node.on("close", function(done) {
        //xmpp.setPresence('offline');
        if (xmpp.conn) { xmpp.conn.end(); }
        xmpp = null;
        done();
    });
}
    RED.nodes.registerType("xmpp in",XmppInNode);

    function XmppOutNode(n) {
    RED.nodes.createNode(this,n);
    this.server = n.server;

    this.serverConfig = RED.nodes.getNode(this.server);
    this.host = this.serverConfig.server;
    this.port = this.serverConfig.port;
    this.nick = this.serverConfig.nickname || "Node-RED";
    this.userid = this.serverConfig.username;
    this.password = this.serverConfig.password;

    this.join = n.join || false;
    this.sendAll = n.sendObject;
    this.to = n.to || "";
    var node = this;

    var xmpp = new XMPP.SimpleXMPP();

    xmpp.on('online', function() {
        node.log('connected to '+node.host+":"+node.port);
        node.status({fill:"green",shape:"dot",text:"connected"});
        xmpp.setPresence('online', node.nick+' online');
        if (node.join) {
            xmpp.join(node.to+'/'+node.nick);
        }
    });

    xmpp.on('error', function(err) {
        console.error("error",err);
    });

    xmpp.on('close', function() {
        node.log('connection closed');
        node.status({fill:"red",shape:"ring",text:"not connected"});
    });

    xmpp.on('subscribe', function(from) {
        xmpp.acceptSubscription(from);
    });

    // Now actually make the connection
    try {
        xmpp.connect({
            jid : node.userid,
            password : node.password,
            host : node.host,
            port : node.port,
            skipPresence : true,
            reconnect : false
        });
    } catch(e) {
        node.error("Bad xmpp configuration");
        node.status({fill:"red",shape:"ring",text:"not connected"});
    }

    node.on("input", function(msg) {
        if (msg.presence) {
            if (['away', 'dnd', 'xa','chat'].indexOf(msg.presence) > -1 ) {
                xmpp.setPresence(msg.presence, msg.payload);
            }
            else { node.warn("Can't set presence - invalid value"); }
        }
        else {
            var to = msg.topic;
            if (node.to !== "") { to = node.to; }
            if (node.sendAll) {
                xmpp.send(to, JSON.stringify(msg), node.join);
            }
            else if (msg.payload) {
                if (typeof(msg.payload) === "object") {
                    xmpp.send(to, JSON.stringify(msg.payload), node.join);
                } else {
                    xmpp.send(to, msg.payload.toString(), node.join);
                }
            }
        }
    });

    node.on("close", function() {
        xmpp.setPresence('offline');
        if (xmpp.conn) { xmpp.conn.end(); }
        xmpp = null;
    });
}
    RED.nodes.registerType("xmpp out",XmppOutNode);

}