var request = require('request');

// enable debugging mode
//request.debug = true;

var lastEventTime = new Date().getTime();

var rawDeviceData = false;
var tahomaJar = request.jar();
var baseRequest = request.defaults({
  headers: {
        'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36'},
  jar: tahomaJar
});

var tahomaDevices = {};
var Map_DeviceURL2StateName = {};

var userName = "";
var passWord = "";

var baseURL = 'https://www.tahomalink.com/enduser-mobile-web/externalAPI/json/';
var baseURLApply = 'https://www.tahomalink.com/enduser-mobile-web/enduserAPI/';

var isConnectedInternal = false;

createState('tahoma.connected', false, {
  read: true,
  write: true,
  name: "connection status of tahoma",
  type: "boolean",
  def: false
});

createOrUpdateState('tahoma.update', false, {
    read: true,
    write: true,
    role: "button"
});
on('javascript.0.tahoma.update', function(obj)
{
    log("tahoma refresh states requested: " + obj);

    if (obj.newState.val)
    {
        getAllStates(function ()
        {
            setState("javascript.0.tahoma.update", false);
        });
    }
});

function isConnected()
{
    return isConnectedInternal;
}
function setConnected(connected)
{
    isConnectedInternal = connected;

    setState('javascript.0.tahoma.connected', connected, true);
}

function getCreateStateOptions4Widget(widget)
{
    if (widget === 'PositionableRollerShutter')
    {
        return {
                "role":  "blind",
        };
    }

    if (widget === 'LuminanceSensor')
    {
        return {
            "role":  "sensor"
        };
    }

    return {
                read: true,
                write: false,
                role: "state"
            };
}

function getCreateStateOptions4State(widget, stateName)
{
    if (stateName === "core:ClosureState" || stateName === "core:TargetClosureState")
    {
        return {
                "type":  "number",               // optional,  default "number"
                "read":  true,                   // mandatory, default true
                "write": true,                   // mandatory, default true
                "min":   0,                      // optional,  default 0
                "max":   100,                    // optional,  default 100
                "unit":  "%",                    // optional,  default %
                "role":  "level.blind"           // mandatory
           };
    }
    if (stateName === "core:SlateOrientationState")
    {
        return {
                "type":  "number",               // optional,  default "number"
                "read":  true,                   // mandatory, default true
                "write": true,                   // mandatory, default true
                "min":   0,                      // optional,  default 0
                "max":   100,                    // optional,  default 100
                "unit":  "%",                    // optional,  default %
                "role":  "level.blind.orientation"           // mandatory
           };
    }
    if (stateName === "core:LuminanceState")
    {
        return {
                "type":  "number",               // optional,  default "number"
                "read":  true,                   // mandatory, default true
                "write": false,                   // mandatory, default true
                "min":   0,                      // optional,  default 0
                "max":   100000,                    // optional,  default 100
                "unit":  "Lux",                    // optional,  default %
                "role":  "level.color.luminance"           // mandatory
           };
    }

    return {
                read: true,
                write: false,
                role: "state"
            };
}

function send(requestPath, payload, callback)
{
    login(function(err,data)
    {
        if (err)
        {
            return callback(err, data);
        }

        sendInternal(requestPath, payload, callback);
    });
}

function sendInternal(requestPath, payload, callback)
{
    var url = baseURL + requestPath;

    if (requestPath.endsWith("apply"))
    {
        url = baseURLApply + requestPath + "/highPriority";
    }
    else if (requestPath === '/setup/devices/states/refresh')
    {
        url = baseURLApply + requestPath;
    }

    var formPayload = null;
    var jsonPayload = null;

    if (requestPath === 'login')
    {
        formPayload = payload;
    }
    else
    {
        jsonPayload = payload;
    }

    log("perform " + requestPath + " with payload:" + JSON.stringify(payload), 'debug');

    baseRequest.post(
        {
            url:    url,
            json:   jsonPayload,
            form:   formPayload
        },
        cb(function(error, response, body)
        {
            if (!error && response.statusCode === 200)
            {
                if (requestPath === 'login')
                {
                    callback(false, JSON.parse(body));
                }
                else
                {
                    callback(false, body);
                }
            }
            else if (response && requestPath !== 'logout'
                && (response.statusCode === 401 || response.statusCode === 403))
            {
                //log("error during tahomalink request: " + response.statusText + " ->" + response.statusCode + " retry "  + requestPath, 'error');

                // session expired?
                setConnected(false);
                send(requestPath, payload, callback);
            }
            else
            {
                log("error during tahomalink request: " + error, 'error');

                var result = {};
                result.error = error;

                if(typeof response !== "undefined")
                {
                    log("response status: " + response.statusCode + " " + response.statusText,'debug');

                    result.responseStatusCode = response.statusCode;
                    result.responseStatusText = response.statusText;
                }

                callback(true, result);
            }
    }));
}

function logout(callback)
{
    var performLogout = isConnected();
    setConnected(false);

    if (performLogout)
    {
        sendInternal("logout", {}, function (err, data)
        {
            callback(err, data);
        });
    }
    else
    {
        callback(false, {});
    }
}

function login(callback)
{
    if (!isConnected())
    {
        var payload = {'userId': userName, 'userPassword': passWord};

        var result = sendInternal("login", payload, cb(function (err, data)
        {
            if (err || !data.success)
            {
                return callback(true, data);
            }

            lastEventTime = new Date().getTime();
            setConnected(true);

            getUserInfo(function (err,data)
            {
                if (!err)
                {
                    return getSetup(callback);
                }

                callback(err, data);
            });

        }));

    }
    else
    {
        callback(false, {});
    }

}

function getUserInfo(callback)
{
    send('getEndUser', {},function (err, data)
    {
        if (!err)
        {
            updateData('userdata', data.endUser);

            callback(false, data);
        }
        else
        {
            log("getUserInfo failed!", 'error');
        }

    });
}

function updateGateWayData(gateways)
{
    for (var i in gateways)
    {
        var gateway = gateways[i];

        updateData(gateway.gatewayId, gateway);
    }
}

function updateDevices(devices)
{
    tahomaDevices = devices;

    for (var i in devices)
    {
        var device = devices[i];

        // just set the raw data from tahoma
        updateDevice('devices.' + device.label, device);
    }
}

function updateDevice(name, deviceData)
{
    createOrUpdateState('tahoma.' + name, '',
        getCreateStateOptions4Widget(deviceData.widget));

    // device URL
    createOrUpdateState('tahoma.' + name + '.deviceURL', deviceData.deviceURL);

    // states
    for (var stateKey in deviceData.states)
    {
        var state = deviceData.states[stateKey];

        createOrUpdateState('tahoma.' + name + '.states.' + state.name,
            mapValueTahoma2ioBroker(state.name, state.value),
            getCreateStateOptions4State(deviceData.widget, state.name));
    }

     // commands
    for (var commandKey in deviceData.definition.commands)
    {
        var command = deviceData.definition.commands[commandKey];

        if (command.nparams === 0)
        {
            createOrUpdateState('tahoma.' + name + '.commands.' + command.commandName, false, {
                read: true,
                write: true,
                role: "button"
            });
        }
    }

    // raw data
    if (rawDeviceData)
    {
        for (var p in deviceData)
        {
            var value = deviceData[p];

            if (typeof(value) === 'object')
            {
                updateData('raw.' + name + '.' + p, value);
            }
            else
            {
                createOrUpdateState('tahoma.raw.' + name + '.' + p, value);
            }
        }
    }
}

function mapValueTahoma2ioBroker(stateName, stateValue)
{
    if (stateName === 'core:ClosureState' || stateName === 'core:TargetClosureState')
    {
        stateValue = parseInt(stateValue,10);
    }

    return stateValue;
}

function mapValueioBroker2Tahoma(stateName, stateValue)
{
    if (stateName === 'core:ClosureState' || stateName === 'core:TargetClosureState')
    {
        stateValue = parseInt(stateValue,10);
    }

    return stateValue;
}

function updateData(type, data)
{
    for (var p in data)
    {
        var value = data[p];

        if (typeof(value) === 'object')
        {
            updateData(type + '.' + p, value);
        }
        else
        {
            createOrUpdateState('tahoma.' + type + '.' + p, value);
        }
    }
}

function createOrUpdateState(key, value, options)
{
    key = key.replace(' ' , '_');
    var state = getState("javascript.0." + key);

    if (value === "true" || value === "false")
    {
        value = value == "true";
    }

    if (state.notExist)
    {

        if (typeof(options) === 'undefined')
        {
            options = {
                read: true,
                write: false,
                type: "string"
            };
        }

        // create state
        createState(key, value, 0, options);
    }
    else
    {
        setState("javascript.0." + key, value, true);
    }
}

function getSetup(callback)
{
    send('getSetup', {},function (err, data)
    {
        if (!err)
        {
            updateGateWayData(data.setup.gateways);
            updateData('location', data.setup.location);
            updateDevices(data.setup.devices);

            // delete old devices
            deleteOldDevices();

            // update mapping table device URL to state key with label
            $('javascript.0.tahoma.devices.*.deviceURL').each(function (id, i)
            {
                var state = getState(id);
                Map_DeviceURL2StateName[state.val] = id.substr(0, id.indexOf(".deviceURL"));

                //log("set mapping deviceURL to name: " + state.val + " -> " + id.substr(0, id.indexOf(".deviceURL")),'debug');
            });

            // refresh
            send('/setup/devices/states/refresh', {}, function (err,data)
            {
                if (err)
                {
                    log("refresh device state failed");
                }
                callback(err, {});
            });

        }
        else
        {
            log("getSetup failed!",'error');

            callback(err, {});
        }

    });
}

function getAllStates()
{
    login(function (err, data)
    {
        if (err)
        {
            return;
        }

        send("getEvents", {}, function (err,data)
        {
            if (err)
            {
                return;
            }

            updateDeviceStateFromEvent(data);
        });
    });
}

function updateDeviceStateFromEvent(events)
{
    for (var i in events)
    {
        lastEventTime = new Date().getTime();
        var event = events[i];

        if (event.name === 'DeviceStateChangedEvent')
        {
            updateDeviceState(event);
        }
    }
}

function updateDeviceState(event)
{
    var deviceURL = event.deviceURL;
    var states = event.deviceStates;

    var devicePath = Map_DeviceURL2StateName[deviceURL];
    // tahoma.devices.XXX
    // tahoma.devices.XXX.states.Y

    log("got event for device " + devicePath);

    for (var i in event.deviceStates)
    {
        var state = event.deviceStates[i];
        var name = state.name;
        var value = mapValueTahoma2ioBroker(name, state.value);

        log("found " + devicePath + '.states.' + name + " -> " + value);
        setState(devicePath + '.states.' + name, value, true);
    }
}

function deleteOldDevices()
{
    var currentTime = new Date().getTime();

    $('javascript.0.tahoma.devices.*.lastUpdateTime').each(function (id, i)
    {
        var state = getState(id);
        var device = id.substr(0, id.indexOf(".lastUpdateTime"));

        if (currentTime - state.ts > 5 * 60 * 1000)
        {
            // update older than 1 minute -> drop
            log ("found old " + device + " -> " + new Date(state.ts),'debug');

            $(device + '.*').each(function (id, i)
            {
                //log("delete state:" + id);
                deleteState(id);
            });
        }
    });
}

on(/^javascript\.0\.tahoma\.devices.*\.commands/,function(obj)
{
    if (obj.state.val)
    {
        var id = obj.id;
      log("button pressed: " + id + " -> " + JSON.stringify(obj));

      var commandName = id.substr(id.lastIndexOf(".")+1);
      var deviceURL = getState(id.substr(0, id.indexOf(".commands.")) + ".deviceURL").val;

      var payload = {'label':'command ' + commandName + ' from ioBroker',
          'actions':[{
            'deviceURL': deviceURL,
            'commands': [{
                'name': commandName,
                'parameters': []
            }]}]};

        send("exec/apply", payload, function(err, data)
        {
            // reset state
            setState(obj.id, !obj.state.val);
        });
    }
});

on(/^javascript\.0\.tahoma\.devices.*\.states.core:*\ClosureState/,function(obj)
{
    if (!obj.newState.ack)
    {
        var id = obj.id;
          log("closure state changed: " + id + " -> " + JSON.stringify(obj));

          var commandName = "setClosure";
          var deviceURL = getState(id.substr(0, id.indexOf(".states.")) + ".deviceURL").val;
          var stateValue = obj.newState.val;
          var roomName = id.substr(id.indexOf('.devices.')+9);

          roomName = roomName.substr(0,roomName.indexOf('.states'));

          var payload = {'label': roomName + ' - Positioniere auf ' + stateValue + ' % - ioBroker',
              'actions':[{
                'deviceURL': deviceURL,
                'commands': [{
                    'name': commandName,
                    'parameters': [ mapValueioBroker2Tahoma('core:ClosureState', stateValue) ]
                }]}]};

            send("exec/apply", payload, function(err, data)
            {
                // reset state
                //setState(obj.id, !obj.state.val);
            });
    }
});

on(/^javascript\.0\.tahoma\.devices.*\.states.core:SlateOrientationState/,function(obj)
{
    if (!obj.newState.ack)
    {
        var id = obj.id;

      var commandName = "setOrientation";
      var deviceURL = getState(id.substr(0, id.indexOf(".states.")) + ".deviceURL").val;
      var stateValue = obj.newState.val;
      var roomName = id.substr(id.indexOf('.devices.')+9);

        roomName = roomName.substr(0,roomName.indexOf('.states'));

      log("slate orientation changed: " + roomName + " -> " + stateValue);


      var payload = {'label':roomName + ' - Ausrichtung ' + stateValue + ' % - ioBroker',
          'actions':[{
            'deviceURL': deviceURL,
            'commands': [{
                'name': commandName,
                'parameters': [ mapValueioBroker2Tahoma('core:SlateOrientationState', stateValue) ]
            }]}]};

        send("exec/apply", payload, function(err, data)
        {
            // reset state
            //setState(obj.id, !obj.state.val);
        });

    }
});

// if connected, update state all 5 seconds
schedule("*/5 * * * * *", function ()
{
    // if connected, update states
    if (isConnected())
    {
        getAllStates();

        if (new Date().getTime() - lastEventTime > 60 * 1000)
        {
            // no events within last 60 seconds
            logout(function () {});
        }
    }
});

// update state all 5 minutes
schedule("*/5 * * * *", function ()
{
    log("update tahoma all 5 minutes");
    getAllStates();
});

onStop(function (callback) {
    logout(function (err, data)
        {
            callback();
        });
}, 10000 /*ms*/);

// start script
getAllStates();