ruuvi-weather

 "use strict";
/*!
 * Plugin for Xiaomi devices using the feaa characteristic
 */
var global_1 = require("../lib/global");
var plugin_1 = require("./plugin");


function parseUrlData(variables){
    var result = {};

    global_1.Global.log("ruuvi-weather >> variables: " + variables, "debug");
    if(variables.length===9){ //Zero-pad URL if needed                         // example: AIgbAMLNs
        variables += "...";
    }
    console.log("fragment = " + variables + "; length = " + variables.length);
    //var decoded   = base91.decode(variables); console.log("91 : " + decoded);
    var decoded64 = Buffer(variables, 'base64'); console.log("64 : " + decoded64);
    global_1.Global.log("ruuvi-weather >> decoded64: " + decoded64, "debug");

    /*
       0:   uint8_t     format;          // (0x01 = realtime sensor readings in base91)
       1:   uint8_t     humidity;        // one lsb is 0.5%
       2-3: uint16_t    temperature;     // Signed 8.8 fixed-point notation.
       4-5: uint16_t    pressure;        // (-50kPa)
       6-7: uint16_t    time;            // seconds (now from reset, later ma ybe from last movement)
    */

    result['humidity'] = Math.round(decoded64[1] * 0.5);
    var uTemp = (((decoded64[2] & 127) << 8) | decoded64[3]);
    var tempSign = (decoded64[2] >> 7) & 1;
    result['temperature'] = Math.round(tempSign === 0 ? uTemp/256.0 : -1 * uTemp/256.0);
    result['pressure'] =  Math.round((((decoded64[4] << 8) + decoded64[5]) + 50000) / 100);
    if (variables[0] == 'B' ) {
        result['beaconID'] = variables.charCodeAt(8); // r = 114
    }

     global_1.Global.log("ruuvi-weather >> result: " + JSON.stringify(result), "debug");
     return result;
};

var plugin = {
    name: "Ruuvi-Weather",
    description: "RuuviTag",
    advertisedServices: ["feaa"],
    isHandling: function (p) {
        global_1.Global.log("ruuvi-weather >> inne drinne", "debug");
        return p.advertisement.serviceData.some(function (entry) { return entry.uuid === "feaa"; });
    },
    createContext: function (peripheral) {
        var data = plugin_1.getServiceData(peripheral, "feaa");
        if (data == null)
            return;

        var url = data.toString(); // e.g. http://ruu.vi/#BGgTAMTgC
        global_1.Global.log("ruuvi-weather >> url: " + url, "debug");

        var urlParameter = url.split("#")[1];

        return parseUrlData(urlParameter);
    },
    defineObjects: function (context) {
        global_1.Global.log("ruuvi-weather >> context: " + JSON.stringify(context), "debug");

        if (context == null)
            return;
        var deviceObject = {
            common: null,
            native: null,
        };
        // no channels
        var stateObjects = [
                {
                    id: "temperature",
                    common: {
                        role: "value",
                        name: "Temperature",
                        type: "number",
                        unit: "°C",
                        read: true,
                        write: false,
                    },
                    native: null,
                },
                {
                    id: "humidity",
                    common: {
                        role: "value",
                        name: "Relative Humidity",
                        type: "number",
                        unit: "%rF",
                        read: true,
                        write: false,
                    },
                    native: null,
                },
                {
                    id: "pressure",
                    common: {
                        role: "value",
                        name: "Air Pressure",
                        type: "number",
                        unit: "hPa",
                        read: true,
                        write: false,
                    },
                    native: null,
                },
                {
                    id: "beaconID",
                    common: {
                        role: "value",
                        name: "Beacon ID",
                        type: "number",
                        unit: "",
                        read: true,
                        write: false,
                    },
                    native: null,
                }

        ];
        var ret = {
            device: deviceObject,
            channels: null,
            states: stateObjects,
        };

        return ret;
    },
    getValues: function (context) {
        global_1.Global.log("ruuvi-weather >> context: " + JSON.stringify(context), "debug");
        return context;
    },
};
module.exports = plugin;