/**
 * Copyright 2014,2016 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 SensorTag = require("sensortag");

    function SensorTagNode(n) {
        RED.nodes.createNode(this,n);
        this.name = n.name;
        this.topic = n.topic;
        this.uuid = n.uuid;
        this.temperature = n.temperature;
        this.pressure = n.pressure;
        this.humidity = n.humidity;
        this.accelerometer = n.accelerometer;
        this.magnetometer = n.magnetometer;
        this.gyroscope = n.gyroscope;
        this.luxometer = n.luxometer;
        this.keys = n.keys;
        if (this.uuid === "") { this.uuid = undefined; }
        var node = this;

        if (typeof node.stag === "undefined") {
            node.status({fill:"blue", shape:"dot", text:"discovering..."});

            SensorTag.discover(function(sensorTag) {
                node.status({fill:"blue", shape:"dot", text:"connecting"});
                node.stag = sensorTag;
                node.log("found sensor tag: " + sensorTag._peripheral.uuid);
                node.topic = node.topic || sensorTag._peripheral.uuid;
                sensorTag.connect(function() {
                    node.log("connected to sensor tag: " + sensorTag._peripheral.uuid);
                    node.status({fill:"green", shape:"dot", text:"connected"});

                    sensorTag.on('disconnect', function() {
                        node.status({fill:"red", shape:"ring", text:"disconnected"});
                        node.log("disconnected ",node.uuid);
                    });

                    sensorTag.discoverServicesAndCharacteristics(function() {
                        sensorTag.enableIrTemperature(function() {});
                        sensorTag.on('irTemperatureChange',
                        function(objectTemperature, ambientTemperature) {
                            var msg = {'topic': node.topic + '/temperature'};
                            msg.payload = {'object': +objectTemperature.toFixed(1),
                            'ambient': +ambientTemperature.toFixed(1)
                            };
                            node.send(msg);
                        });
                        sensorTag.enableBarometricPressure(function() {});
                        sensorTag.on('barometricPressureChange', function(pressure) {
                            var msg = {'topic': node.topic + '/pressure'};
                            msg.payload = {'pressure': parseInt(pressure)};
                            node.send(msg);
                        });
                        sensorTag.enableHumidity(function() {});
                        sensorTag.on('humidityChange', function(temp, humidity) {
                            var msg = {'topic': node.topic + '/humidity'};
                            msg.payload = {'temperature': +temp.toFixed(1),
                            'humidity': +humidity.toFixed(1)
                            };
                            node.send(msg);
                        });
                        sensorTag.enableAccelerometer(function() {});
                        sensorTag.on('accelerometerChange', function(x,y,z) {
                            var msg = {'topic': node.topic + '/accelerometer'};
                            msg.payload = {'x': +x.toFixed(2), 'y': +y.toFixed(2), 'z': +z.toFixed(2)};
                            node.send(msg);
                        });
                        sensorTag.enableMagnetometer(function() {});
                        sensorTag.on('magnetometerChange', function(x,y,z) {
                            var msg = {'topic': node.topic + '/magnetometer'};
                            msg.payload = {'x': +x.toFixed(2), 'y': +y.toFixed(2), 'z': +z.toFixed(2)};
                            node.send(msg);
                        });
                        sensorTag.enableGyroscope(function() {});
                        sensorTag.on('gyroscopeChange', function(x,y,z) {
                            var msg = {'topic': node.topic + '/gyroscope'};
                            msg.payload = {'x': +x.toFixed(2), 'y': +y.toFixed(2), 'z': +z.toFixed(2)};
                            node.send(msg);
                        });
                        sensorTag.on('simpleKeyChange', function(left, right, mag) {
                            var msg = {'topic': node.topic + '/keys'};
                            msg.payload = {'left': left, 'right': right, 'magnet': mag};
                            node.send(msg);
                        });

                        sensorTag.on('luxometerChange', function(lux) {
                            var msg = {'topic': node.topic + '/luxometer'};
                            msg.payload = {'lux': parseInt(lux)};
                            node.send(msg);
                        });
                        enable(node);
                    });
                });
            },node.uuid);
        } else {
            console.log("reconfig",node.uuid);
            enable(node);
        }

        this.on("close", function() {
            if (node.stag) {
                node.stag.disconnect(function() {});
            }
        });
    }

    var enable = function(node) {
        if (node.temperature) {
            node.stag.notifyIrTemperature(function() {});
        } else {
            node.stag.unnotifyIrTemperature(function() {});
        }
        if (node.pressure) {
            node.stag.notifyBarometricPressure(function() {});
        } else {
            node.stag.unnotifyBarometricPressure(function() {});
        }
        if (node.humidity) {
            node.stag.notifyHumidity(function() {});
        } else {
            node.stag.unnotifyHumidity(function() {});
        }
        if (node.accelerometer) {
            node.stag.notifyAccelerometer(function() {});
        } else {
            node.stag.unnotifyAccelerometer(function() {});
        }
        if (node.magnetometer) {
            node.stag.notifyMagnetometer(function() {});
        } else {
            node.stag.unnotifyMagnetometer(function() {});
        }
        if (node.gyroscope) {
            node.stag.notifyGyroscope(function() {});
        } else {
            node.stag.unnotifyGyroscope(function() {});
        }
        if (node.stag.type === "cc2650") {
            if (node.luxometer) {
                node.stag.enableLuxometer(function() {});
                node.stag.notifyLuxometer(function() {});
            } else {
                node.stag.unnotifyLuxometer(function() {});
                node.stag.disableLuxometer(function() {});
            }
        }
        if (node.keys) {
            node.stag.notifySimpleKey(function() {});
        } else {
            node.stag.unnotifySimpleKey(function() {});
        }
    }

    RED.nodes.registerType("sensorTag",SensorTagNode);
}