button-action-trigger.js

// CHANGE HERE

let TARGET_IP = '';
let TARGET_PORT = '';

  function buttonAction(BTHparsed) {
    print(BTHparsed.Button === 4 ? 'Long Press' : BTHparsed.Button + 'Short press');
    let TARGET_URI = "http://" + TARGET_IP + ":" + TARGET_PORT + '/DWBLU/' + BTHparsed.addr;
    print(TARGET_URI);
    Shelly.call(
        "HTTP.REQUEST", 
        { 
            method: "POST",
            url: TARGET_URI,
            body: {
                "DeviceId":BTHparsed.addr,
                "DeviceType":"Button",
                "Battery":BTHparsed.Battery,
                "State":BTHparsed.Button === 4 ? 'Long Press' : BTHparsed.Button + 'Short press',
            },
        },
        function (res, error_code, error_msg, self){
          if(error_code !== 0){
            print(JSON.stringify(res));
            print(JSON.stringify(error_code));
            print(JSON.stringify(error_msg));
          }
        }, 
        this
      );
  }

  let CONFIG = {
    actions: [
        {
            cond: {
                Button: 1,
            },
            action: buttonAction // 1 short press
        },
        {
            cond: {
                Button: 2,
            },
            action: buttonAction // 2 short press
        },
        {
            cond: {
                Button: 3,
            },
            action: buttonAction // 3 short press
        },
        {
            cond: {
                Button: 4,
            },
            action: buttonAction, // long press
        },  
    ],
  };
  
  // END OF CHANGE
  
  let ALLTERCO_MFD_ID_STR = "0ba9";
  let BTHOME_SVC_ID_STR = "fcd2";
  
  let SCAN_DURATION = BLE.Scanner.INFINITE_SCAN;
  let ACTIVE_SCAN =
    typeof CONFIG.shelly_blu_name_prefix !== "undefined" &&
    CONFIG.shelly_blu_name_prefix !== null;
  
  let uint8 = 0;
  let int8 = 1;
  let uint16 = 2;
  let int16 = 3;
  let uint24 = 4;
  let int24 = 5;
  
  function getByteSize(type) {
    if (type === uint8 || type === int8) return 1;
    if (type === uint16 || type === int16) return 2;
    if (type === uint24 || type === int24) return 3;
    //impossible as advertisements are much smaller;
    return 255;
  }
  
  let BTH = [];
  BTH[0x00] = { n: "pid", t: uint8 };
  BTH[0x01] = { n: "Battery", t: uint8, u: "%" };
  BTH[0x05] = { n: "Illuminance", t: uint24, f: 0.01 };
  BTH[0x1a] = { n: "Door", t: uint8 };
  BTH[0x20] = { n: "Moisture", t: uint8 };
  BTH[0x2d] = { n: "Window", t: uint8 };
  BTH[0x3a] = { n: "Button", t: uint8 };
  BTH[0x3f] = { n: "Rotation", t: int16, f: 0.1 };
  
  let BTHomeDecoder = {
    utoi: function (num, bitsz) {
      let mask = 1 << (bitsz - 1);
      return num & mask ? num - (1 << bitsz) : num;
    },
    getUInt8: function (buffer) {
      return buffer.at(0);
    },
    getInt8: function (buffer) {
      return this.utoi(this.getUInt8(buffer), 8);
    },
    getUInt16LE: function (buffer) {
      return 0xffff & ((buffer.at(1) << 8) | buffer.at(0));
    },
    getInt16LE: function (buffer) {
      return this.utoi(this.getUInt16LE(buffer), 16);
    },
    getUInt24LE: function (buffer) {
      return (
        0x00ffffff & ((buffer.at(2) << 16) | (buffer.at(1) << 8) | buffer.at(0))
      );
    },
    getInt24LE: function (buffer) {
      return this.utoi(this.getUInt24LE(buffer), 24);
    },
    getBufValue: function (type, buffer) {
      if (buffer.length < getByteSize(type)) return null;
      let res = null;
      if (type === uint8) res = this.getUInt8(buffer);
      if (type === int8) res = this.getInt8(buffer);
      if (type === uint16) res = this.getUInt16LE(buffer);
      if (type === int16) res = this.getInt16LE(buffer);
      if (type === uint24) res = this.getUInt24LE(buffer);
      if (type === int24) res = this.getInt24LE(buffer);
      return res;
    },
    unpack: function (buffer) {
      // beacons might not provide BTH service data
      if (typeof buffer !== "string" || buffer.length === 0) return null;
      let result = {};
      let _dib = buffer.at(0);
      result["encryption"] = _dib & 0x1 ? true : false;
      result["BTHome_version"] = _dib >> 5;
      if (result["BTHome_version"] !== 2) return null;
      //Can not handle encrypted data
      if (result["encryption"]) return result;
      buffer = buffer.slice(1);
  
      let _bth;
      let _value;
      while (buffer.length > 0) {
        _bth = BTH[buffer.at(0)];
        if (typeof _bth === "undefined") {
          console.log("BTH: unknown type");
          break;
        }
        buffer = buffer.slice(1);
        _value = this.getBufValue(_bth.t, buffer);
        if (_value === null) break;
        if (typeof _bth.f !== "undefined") _value = _value * _bth.f;
        result[_bth.n] = _value;
        buffer = buffer.slice(getByteSize(_bth.t));
      }
      return result;
    },
  };
  
  let ShellyBLUParser = {
    getData: function (res) {
      let result = BTHomeDecoder.unpack(res.service_data[BTHOME_SVC_ID_STR]);
      result.addr = res.addr;
      result.rssi = res.rssi;
      return result;
    },
  };
  
  let last_packet_id = 0x100;
  function scanCB(ev, res) {
    if (ev !== BLE.Scanner.SCAN_RESULT) return;
    // skip if there is no service_data member
    if (
      typeof res.service_data === "undefined" ||
      typeof res.service_data[BTHOME_SVC_ID_STR] === "undefined"
    )
      return;
    // skip if we are looking for name match but don't have active scan as we don't have name
    if (
      typeof CONFIG.shelly_blu_name_prefix !== "undefined" &&
      (typeof res.local_name === "undefined" ||
        res.local_name.indexOf(CONFIG.shelly_blu_name_prefix) !== 0)
    )
      return;
    // skip if we don't have address match
    if (
      typeof CONFIG.shelly_blu_address !== "undefined" &&
      CONFIG.shelly_blu_address !== res.addr
    )
      return;
    let BTHparsed = ShellyBLUParser.getData(res);
    // skip if parsing failed
    if (BTHparsed === null) {
      console.log("Failed to parse BTH data");
      return;
    }
    // skip, we are deduping results
    if (last_packet_id === BTHparsed.pid) return;
    last_packet_id = BTHparsed.pid;
    // console.log("Shelly BTH packet: ", JSON.stringify(BTHparsed));
    // execute actions from CONFIG
    let aIdx = null;
    for (aIdx in CONFIG.actions) {
      // skip if no condition defined
      if (typeof CONFIG.actions[aIdx]["cond"] === "undefined") continue;
      let cond = CONFIG.actions[aIdx]["cond"];
      let cIdx = null;
      let run = true;
      for (cIdx in cond) {
        if (typeof BTHparsed[cIdx] === "undefined") run = false;
        if (BTHparsed[cIdx] !== cond[cIdx]) run = false;
      }
      // if all conditions evaluated to true then execute
      if (run) CONFIG.actions[aIdx]["action"](BTHparsed);
    }
  }
  
  // retry several times to start the scanner if script was started before
  // BLE infrastructure was up in the Shelly
  function startBLEScan() {
    let bleScanSuccess = BLE.Scanner.Start({ duration_ms: SCAN_DURATION, active: ACTIVE_SCAN }, scanCB);
    if( bleScanSuccess === false ) {
      Timer.set(1000, false, startBLEScan);
    } else {
      console.log('Success: BLU button scanner running');
    }
  }
  
  //Check for BLE config and print a message if BLE is not enabled on the device
  let BLEConfig = Shelly.getComponentConfig('ble');
  if(BLEConfig.enable === false) {
    console.log('Error: BLE not enabled');
  } else {
    Timer.set(1000, false, startBLEScan);
  }