var NodeHelper = require('node_helper');

module.exports = NodeHelper.create({
    start: function() {
        this.setTimer(30 * 60 * 1000);
    },

    doUpdate: function() {
        var self = this;
        getPoolData(this.config, function(poolData) {
            self.sendSocketNotification('SCREENLOGIC_RESULT', poolData);
        });
    },

    setCircuit: function(circuitState) {
        var self = this;
        setCircuitState(circuitState, function(poolStatus) {
            self.sendSocketNotification('SCREENLOGIC_CIRCUIT_DONE', {circuitState: circuitState, status: poolStatus});
        });
    },

    setHeatpoint: function(heatpoint) {
        var self = this;
        setHeatpointState(heatpoint, function(poolStatus) {
            self.sendSocketNotification('SCREENLOGIC_HEATPOINT_DONE', {heatpoint: heatpoint, status: poolStatus});
        });
    },

    setHeatstate: function(heatstate) {
        var self = this;
        setHeatstateState(heatstate, function(poolStatus) {
            self.sendSocketNotification('SCREENLOGIC_HEATSTATE_DONE', {heatstate: heatstate, status: poolStatus});
        });
    },

    setLightcmd: function(lightCmd) {
        var self = this;
        setLights(lightCmd, function(poolStatus) {
            self.sendSocketNotification('SCREENLOGIC_LIGHTCMD_DONE', {lightCmd: lightCmd, status: poolStatus});
        });
    },

    restartTimer: function() {
        var interval = this.updateInterval;
        this.updateInterval = undefined;
        this.setTimer(interval);
    },

    setTimer: function(updateInterval) {
        var update = true;
        update = typeof this.updateInterval === 'undefined' || this.updateInterval !== updateInterval;
        this.updateInterval = updateInterval;

        if (update) {
            if (typeof this.timer !== 'undefined') {
                clearInterval(this.timer);
            }

            var self = this;
            self.timer = setInterval(function() {
                self.doUpdate();
            }, self.updateInterval);
        }
    },

    socketNotificationReceived: function(notification, payload) {
        if (notification === 'SCREENLOGIC_CONFIG') {
            this.config = payload;
            this.setTimer(this.config.updateInterval);
        }
        if (notification === 'SCREENLOGIC_UPDATE') {
            this.doUpdate();
        }
        if (notification === 'SCREENLOGIC_CIRCUIT') {
            this.setCircuit(payload);
        }
        if (notification === 'SCREENLOGIC_HEATPOINT') {
            this.setHeatpoint(payload);
        }
        if (notification === 'SCREENLOGIC_HEATSTATE') {
            this.setHeatstate(payload);
        }
        if (notification === 'SCREENLOGIC_LIGHTCMD') {
            this.setLightcmd(payload);
        }
    }
});

const ScreenLogic = require('node-screenlogic');
var foundUnit;

function getPoolData(config, cb) {
    if (!foundUnit && typeof config !== 'undefined' && config.serverAddress && config.serverPort) {
        foundUnit = new ScreenLogic.UnitConnection(config.serverPort, config.serverAddress);
    }

    if (foundUnit) {
        populateSystemData(cb);
    } else {
        findServer(cb);
    }
}

function findServer(cb) {
    var finder = new ScreenLogic.FindUnits();
    finder.on('serverFound', function(server) {
        finder.close();

        foundUnit = new ScreenLogic.UnitConnection(server);
        populateSystemData(cb);
    });

    finder.search();
}

function populateSystemData(cb) {
    var poolData = {};

    if (!foundUnit) {
        cb(poolData);
        return;
    }

    foundUnit.once('loggedIn', function() {
        foundUnit.getControllerConfig();
    }).once('controllerConfig', function(config) {
        poolData.controllerConfig = config;
        poolData.degStr = config.degC ? 'C' : 'F';
        foundUnit.getPoolStatus();
    }).once('poolStatus', function(status) {
        poolData.status = status;

        foundUnit.close();
        cb(poolData);
    });

    foundUnit.connect();
}

function setCircuitState(circuitState, cb) {
    if (!foundUnit) {
        cb();
        return;
    }

    foundUnit.once('loggedIn', function() {
        foundUnit.setCircuitState(0, circuitState.id, circuitState.state);
    }).once('circuitStateChanged', function() {
        foundUnit.getPoolStatus();
    }).once('poolStatus', function(status) {
        foundUnit.close();
        cb(status);
    });

    foundUnit.connect();
}

function setHeatpointState(heatpoint, cb) {
    if (!foundUnit) {
        cb();
        return;
    }

    foundUnit.once('loggedIn', function() {
        foundUnit.setSetPoint(0, heatpoint.body, heatpoint.temperature);
    }).once('setPointChanged', function() {
        foundUnit.getPoolStatus();
    }).once('poolStatus', function(status) {
        foundUnit.close();
        cb(status);
    });

    foundUnit.connect();
}

function setHeatstateState(heatstate, cb) {
    if (!foundUnit) {
        cb();
        return;
    }

    foundUnit.once('loggedIn', function() {
        foundUnit.setHeatMode(0, heatstate.body, heatstate.state);
    }).once('heatModeChanged', function() {
        foundUnit.getPoolStatus();
    }).once('poolStatus', function(status) {
        foundUnit.close();
        cb(status);
    });

    foundUnit.connect();
}

function setLights(lightCmd, cb) {
    if (!foundUnit) {
        cb();
        return;
    }

    foundUnit.once('loggedIn', function() {
        foundUnit.sendLightCommand(0, lightCmd);
    }).once('sentLightCommand', function() {
        foundUnit.getPoolStatus();
    }).once('poolStatus', function(status) {
        foundUnit.close();
        cb(status);
    });

    foundUnit.connect();
}