forked from sponte/HAP-Accessories
-
Notifications
You must be signed in to change notification settings - Fork 1
/
NestThermostat_accfactory.js
401 lines (349 loc) · 12.3 KB
/
NestThermostat_accfactory.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
var Accessory = require('../').Accessory;
var Service = require('../').Service;
var Characteristic = require('../').Characteristic;
var uuid = require('../').uuid;
var storage = require('node-persist'); //persistent storage for the nest auth token
var nestInfo;
try {
nestInfo = require("./Nest_Info.js"); //nest connection parameters
}
catch (err) {
console.log("Unable to read file Nest_Info.js: ", err);
console.log("see Nest_Info_SAMPLE.js. for an example");
}
var nestList = []; //empty, we'll fill this when we talk to nest
var nestAccessToken = "";
function roundHalf(num) {
return Math.round(num*2)/2;
}
function hashFnv32a(str, asString, seed) {
/*jshint bitwise:false */
var i, l,
hval = (seed === undefined) ? 0x811c9dc5 : seed;
for (i = 0, l = str.length; i < l; i++) {
hval ^= str.charCodeAt(i);
hval += (hval << 1) + (hval << 4) + (hval << 7) + (hval << 8) + (hval << 24);
}
if( asString ){
// Convert to 8 digit hex string
return ("0000000" + (hval >>> 0).toString(16)).substr(-8);
}
return hval >>> 0;
}
function genMAC(id){
var hash = hashFnv32a(id, true);
return "00:01:"+hash.split( /(?=(?:..)*$)/ ).join(":");
}
var getNestAccessToken = function() {
var httpSync = require('http-sync-4');
var request = httpSync.request({
method: 'POST',
headers: {},
body: '',
protocol: 'https',
host: "api.home.nest.com",
port: 443, //443 if protocol = https
path: "/oauth2/access_token?code="+nestInfo.nestPIN+"&client_id="+nestInfo.nestClientID+"&client_secret="+nestInfo.nestClientSecret+"&grant_type=authorization_code"
});
var timedout = false;
request.setTimeout(10000, function() {
console.log("Request Timedout!");
timedout = true;
});
var response = request.end();
if (!timedout) {
//console.log(response);
//console.log(response.body.toString());
var obj = JSON.parse(response.body);
nestAccessToken = obj.access_token;
//console.log("Token: "+nestAccessToken);
storage.initSync();
storage.setItem("nestAccessToken", obj.access_token);
}
};
var getNestThermostats = function() {
console.log("Asking Nest for Thermostats...");
var httpSync = require('http-sync-4');
var request = httpSync.request({
method: 'GET',
headers: {
accept: 'application/json'
},
body: '',
protocol: 'https',
host: "developer-api.nest.com",
port: 443, //443 if protocol = https
path: "/devices?auth="+storage.getItem("nestAccessToken")
});
var timedout = false;
request.setTimeout(10000, function() {
console.log("Request Timedout!");
timedout = true;
});
var response = request.end();
if (!timedout) {
//console.log(response);
//console.log(response.body.toString());
var obj = JSON.parse(response.body);
var thermostats = obj.thermostats;
for (var k in thermostats){
if (typeof thermostats[k] !== 'function') {
var thermostat = thermostats[k];
var hvac_mode;
switch(thermostat.hvac_mode) {
case "heat":
hvac_mode=Characteristic.CurrentHeatingCoolingState.HEAT;
break;
case "cool":
hvac_mode=Characteristic.CurrentHeatingCoolingState.COOL;
break;
case "heat-cool":
hvac_mode=3; //not officially supported in homekit types as of 9/17/15... maybe apple will fix? value of "auto" in simulator
break;
case "off":
default:
hvac_mode=Characteristic.CurrentHeatingCoolingState.OFF;
break;
}
nestList.push({
id: k,
name: thermostat.name_long,
temperature_scale: (thermostat.temperature_scale === "C" ? Characteristic.TemperatureDisplayUnits.CELSIUS : Characteristic.TemperatureDisplayUnits.FAHRENHEIT),
current_heating_cooling_state: hvac_mode,
target_heating_cooling_state: hvac_mode, //set target to same so we dont change anything
current_temperature: thermostat["ambient_temperature_"+thermostat.temperature_scale.toLowerCase()]*1.0,
target_temperature: thermostat["target_temperature_"+thermostat.temperature_scale.toLowerCase()]*1.0,
current_relative_humidity: thermostat.humidity,
});
}
}
}
};
var execute = function(id,characteristic,value) {
var httpSync = require('http-sync-4');
var body = "";
if(characteristic === "target_temperature") {
characteristic += "_c";
body = roundHalf(value*1.0); //nest requires 0.5 Celsius increments.
}else if(characteristic === "hvac_mode") {
switch(value) {
case Characteristic.CurrentHeatingCoolingState.OFF:
body = "off"
break;
case Characteristic.CurrentHeatingCoolingState.COOL:
body = "cool"
break;
case Characteristic.CurrentHeatingCoolingState.HEAT:
body = "heat"
break;
case 3: //auto
body = "heat-cool"
break;
default:
body = null;
}
}
var post_data = JSON.stringify(body);
var request = httpSync.request({
method: 'put',
headers: {
accept: 'application/json'
},
body: post_data,
protocol: 'https',
host: "developer-api.nest.com",
port: 443, //443 if protocol = https
path: "/devices/thermostats/"+id+"/"+characteristic+"?auth="+storage.getItem("nestAccessToken")
});
var timedout = false;
request.setTimeout(10000, function() {
console.log("Request Timedout!");
timedout = true;
});
var response = request.end();
if (!timedout) {
console.log("Nest response: " + response.body.toString());
//console.log(response.body.toString());
//console.log("executed accessory: " + accessory + ", and characteristic: " + characteristic + ", with value: " + value + ".");
}
};
var getValue = function(id,characteristic) {
var body = "";
var httpSync = require('http-sync-4');
var request = httpSync.request({
method: 'GET',
headers: {
accept: 'application/json'
},
body: '',
protocol: 'https',
host: "developer-api.nest.com",
port: 443, //443 if protocol = https
path: "/devices/thermostats/"+id+"?auth="+storage.getItem("nestAccessToken")
});
var timedout = false;
request.setTimeout(10000, function() {
console.log("Request Timedout!");
timedout = true;
});
var response = request.end();
if (!timedout) {
//console.log(response);
//console.log(response.body.toString());
var obj = JSON.parse(response.body);
var thermostat = obj;
//console.log(thermostat.ambient_temperature_c);
//console.log(typeof thermostat.ambient_temperature_c);
var ret;
switch(characteristic) {
case "current_temperature":
ret=thermostat.ambient_temperature_c;
break;
case "target_temperature":
ret=thermostat.target_temperature_c;
break;
case "hvac_mode":
switch(thermostat.hvac_mode) {
case "heat":
ret=Characteristic.CurrentHeatingCoolingState.HEAT;
break;
case "cool":
ret=Characteristic.CurrentHeatingCoolingState.COOL;
break;
case "heat-cool":
ret=3; //not officially supported in homekit types as of 9/17/15... maybe apple will fix? value of "auto" in simulator
break;
case "off":
ret=Characteristic.CurrentHeatingCoolingState.OFF;
break;
default:
ret=null;
}
break;
case "humidity":
ret=thermostat.humidity;
break;
case "temperature_scale":
ret=(thermostat.temperature_scale === "C" ? Characteristic.TemperatureDisplayUnits.CELSIUS : Characteristic.TemperatureDisplayUnits.FAHRENHEIT);
break;
default:
ret=null;
}
return ret;
}
};
//the factory creates new accessory objects with the parameters that are passed
var nestAccFactory = function (paramsObject) {
var NEST_THERMOSTAT = {
number: paramsObject.id,
current_temperature: 32, // celsius
target_temperature_: 32, // celsius
temperature_scale: Characteristic.TemperatureDisplayUnits.FAHRENHEIT,
current_heating_cooling_state: Characteristic.CurrentHeatingCoolingState.OFF,
target_heating_cooling_state: Characteristic.CurrentHeatingCoolingState.OFF,
current_relative_humidity: 50, // 50%
cooling_threshold_temperature: 32,
heating_threshold_temperature: 32,
setTemperature: function(temperature) {
console.log("Setting thermostat temperature to %s", temperature);
execute(NEST_THERMOSTAT.number, "target_temperature", temperature);
NEST_THERMOSTAT.target_temperature = temperature;
},
setTargetHeatingCoolingState: function(state) {
console.log("Setting thermostat target_heating_cooling_state to %s", state);
execute(NEST_THERMOSTAT.number, "hvac_mode", state);
NEST_THERMOSTAT.target_heating_cooling_state = state;
}
}
var nestUUID = uuid.generate('"hap-nodejs:accessories:best:'+paramsObject.id);
var name = "Nest " + paramsObject.name;
var serial = genMAC(paramsObject.id);
var nest = new Accessory(name, nestUUID);
// Add properties for publishing (in case we're using Core.js and not BridgedCore.js)
nest.username = "1A:2B:3C:4D:5E:FF";
nest.pincode = "031-45-154";
nest
.getService(Service.AccessoryInformation)
.setCharacteristic(Characteristic.Manufacturer, "Nest")
.setCharacteristic(Characteristic.Model, "NESTTHERMOSTAT")
.setCharacteristic(Characteristic.SerialNumber, serial);
nest
.addService(Service.Thermostat, name); // services exposed to the user should have "names"
// add required Characteristics
// current temperature
nest
.getService(Service.Thermostat)
.getCharacteristic(Characteristic.CurrentTemperature)
.on('get', function(callback) {
NEST_THERMOSTAT.current_temperature = getValue(NEST_THERMOSTAT.number, "current_temperature");
callback(null, NEST_THERMOSTAT.current_temperature);
});
// target temperature
nest
.getService(Service.Thermostat)
.getCharacteristic(Characteristic.TargetTemperature)
.on('get', function(callback) {
NEST_THERMOSTAT.target_temperature = getValue(NEST_THERMOSTAT.number, "target_temperature");
callback(null, NEST_THERMOSTAT.target_temperature);
})
.on('set', function(value, callback) {
NEST_THERMOSTAT.setTemperature(value);
callback();
});
// current heating cooling state
nest
.getService(Service.Thermostat)
.getCharacteristic(Characteristic.CurrentHeatingCoolingState)
.on('get', function(callback) {
NEST_THERMOSTAT.current_heating_cooling_state = getValue(NEST_THERMOSTAT.number, "hvac_mode");
callback(null, NEST_THERMOSTAT.current_heating_cooling_state);
});
// target heating cooling state
nest
.getService(Service.Thermostat)
.getCharacteristic(Characteristic.TargetHeatingCoolingState)
.on('get', function(callback) {
//NEST_THERMOSTAT.target_heating_cooling_state = getValue(NEST_THERMOSTAT.number, "hvac_mode");
callback(null, NEST_THERMOSTAT.target_heating_cooling_state);
})
.on('set', function(value, callback) {
NEST_THERMOSTAT.setTargetHeatingCoolingState(value);
callback();
});
// display units (Nest only has read)
nest
.getService(Service.Thermostat)
.getCharacteristic(Characteristic.TemperatureDisplayUnits)
.on('get', function(callback) {
NEST_THERMOSTAT.display_units = getValue(NEST_THERMOSTAT.number, "temperature_scale");
callback(null, NEST_THERMOSTAT.display_units);
});
// relative humidity (Nest only has read) OPTIONAL
nest
.getService(Service.Thermostat)
.addCharacteristic(Characteristic.CurrentRelativeHumidity)
.on('get', function(callback) {
NEST_THERMOSTAT.current_relative_humidity = getValue(NEST_THERMOSTAT.number, "humidity");
callback(null, NEST_THERMOSTAT.current_relative_humidity);
});
return nest;
};
module.exports = (function() {
var accessories = [];
var index;
//start persistent storage
storage.initSync();
//get nest token first
if (typeof storage.getItem("nestAccessToken") === "undefined") {
getNestAccessToken();
} else {
nestAccessToken = storage.getItem("nestAccessToken");
}
getNestThermostats();
for (index in nestList) {
if (nestList.hasOwnProperty(index)) {
accessories.push(nestAccFactory(nestList[index]));
}
}
return accessories;
}());