Adapt the demo to use kuksa.val service

- The "AUTO" element was removed because there's no compatible
VSS signal.
- Removed the indicators below the seats and now they work only
to toggle the state of the seat warmer.
- The air distribution buttons now work as a radio group as there
is only one AirDistribution setting per cabin.

Bug-AGL: SPEC-4599
Signed-off-by: Roger Zanoni <rzanoni@igalia.com>
Change-Id: Ibfaa477a7c27627ac524f39dd809b7a2195c7c9f

14 files changed, 392 insertions, 373 deletions

diff --git a/package.json b/package.json
index ba76bd5..06006e6 100644
--- a/package.json
+++ b/package.json
@@ -31,5 +31,7 @@
         "webpack-cli": "^4.9.2",
         "webpack-dev-server": "^4.8.1"
     },
-    "dependencies": {}
+    "dependencies": {
+        "uuid": "^9.0.0"
+    }
 }
diff --git a/src/index.html b/src/index.html
index 88ea3fa..c8a5eed 100644
--- a/src/index.html
+++ b/src/index.html
@@ -27,7 +27,7 @@
             </div>
             <div class="fanSpeed">
                 <div class="fanSpeedContainer">
-                    <input id="FanSpeed" type="range" min="1" value="1" max="100" onchange="FANSPEED.set(this)">
+                    <input id="FanSpeed" type="range" min="1" value="1" max="100" onchange="FANSPEED.set()">
                     <progress value="1" max="100"></progress>
                 </div>
                 <div class="label">
@@ -36,39 +36,26 @@
             </div>
         </div>
         <div class="center">
-            <a id="LeftChair" value="0" class="seat left item button" onclick="CHAIR.left(this)">
+            <a id="LeftChair" value="false" class="seat left item button" onclick="SEATS.left()">
                 <img class="off" src="../images/HMI_HVAC_Left_Chair_OFF.svg"/>
-                <img class="one two" src="../images/HMI_HVAC_Left_Chair_ON.svg"/>
-                <img class="off" src="../images/HMI_HVAC_ChairIndicator_OFF.svg"/>
-                <img class="one" src="../images/HMI_HVAC_ChairIndicator_One.svg"/>
-                <img class="two" src="../images/HMI_HVAC_ChairIndicator_Two.svg"/>
+                <img class="on" src="../images/HMI_HVAC_Left_Chair_ON.svg"/>
             </a>
-            <a key="ac" value="false" class="ac item button" onclick="BUTTON.toggle(this)">
+            <a id="ac" key="ac" value="false" class="ac item button" onclick="BUTTONS.toggle(this)">
                 <img class="disabled" src="../images/HMI_HVAC_Inactive.svg"/>
                 <img class="enabled" src="../images/HMI_HVAC_Active.svg"/>
                 <div class="label">
                     A/C
                 </div>
             </a>
-            <a id="RightChair" value="0" class="seat right item button" onclick="CHAIR.right(this)">
+            <a id="RightChair" value="false" class="seat right item button" onclick="SEATS.right()">
                 <img class="off" src="../images/HMI_HVAC_Right_Chair_OFF.svg"/>
-                <img class="one two" src="../images/HMI_HVAC_Right_Chair_ON.svg"/>
-                <img class="off" src="../images/HMI_HVAC_ChairIndicator_OFF.svg"/>
-                <img class="one" src="../images/HMI_HVAC_ChairIndicator_One.svg"/>
-                <img class="two" src="../images/HMI_HVAC_ChairIndicator_Two.svg"/>
+                <img class="on" src="../images/HMI_HVAC_Right_Chair_ON.svg"/>
             </a>
             <div class="temperatures item">
                 <div id="lefttemperature" class="temperatures-container" onscroll="TEMPERATURE.left(this)"></div>
             </div>
             <div class="block item">
-                <a key="auto" value="false" class="auto item button" onclick="BUTTON.toggle(this)">
-                    <img class="disabled" src="../images/HMI_HVAC_Inactive.svg"/>
-                    <img class="enabled" src="../images/HMI_HVAC_Active.svg"/>
-                    <div class="label">
-                        AUTO
-                    </div>
-                </a>
-                <a key="circulation" value="false" class="circulation item button" onclick="BUTTON.toggle(this)">
+                <a id="recirculation" key="recirculation" value="false" class="circulation item button" onclick="BUTTONS.toggle(this)">
                     <img class="disabled" src="../images/HMI_HVAC_Circulation_Inactive.svg"/>
                     <img class="enabled" src="../images/HMI_HVAC_Circulation_Active.svg"/>
                 </a>
@@ -78,23 +65,23 @@
             </div>
         </div>
         <div class="bottom">
-            <a key="down" value="false" class="down item button" onclick="BUTTON.toggle(this)">
+            <a id="down" key="down" value="false" class="down item button" onclick="BUTTONS.toggle(this)">
                 <img class="disabled" src="../images/HMI_HVAC_AirDown_Inactive.svg">
                 <img class="enabled" src="../images/HMI_HVAC_AirDown_Active.svg">
             </a>
-            <a key="up" value="false" class="up item button" onclick="BUTTON.toggle(this)">
+            <a id="up" key="up" value="false" class="up item button" onclick="BUTTONS.toggle(this)">
                 <img class="disabled" src="../images/HMI_HVAC_AirUp_Inactive.svg">
                 <img class="enabled" src="../images/HMI_HVAC_AirUp_Active.svg">
             </a>
-            <a key="right" value="false" class="right item button" onclick="BUTTON.toggle(this)">
+            <a id="right" key="right" value="false" class="right item button" onclick="BUTTONS.toggle(this)">
                 <img class="disabled" src="../images/HMI_HVAC_AirRight_Inactive.svg">
                 <img class="enabled" src="../images/HMI_HVAC_AirRight_Active.svg">
             </a>
-            <a key="rear" value="false" class="rear item button" onclick="BUTTON.toggle(this)">
+            <a id="rear" key="rear" value="false" class="rear item button" onclick="BUTTONS.toggle(this)">
                 <img class="disabled" src="../images/HMI_HVAC_Rear_Inactive.svg">
                 <img class="enabled" src="../images/HMI_HVAC_Rear_Active.svg">
             </a>
-            <a key="front" value="false" class="front item button" onclick="BUTTON.toggle(this)">
+            <a id="front" key="front" value="false" class="front item button" onclick="BUTTONS.toggle(this)">
                 <img class="disabled" src="../images/HMI_HVAC_Front_Inactive.svg">
                 <img class="enabled" src="../images/HMI_HVAC_Front_Active.svg">
             </a>
diff --git a/src/index.js b/src/index.js
index 67f800a..53ee56b 100644
--- a/src/index.js
+++ b/src/index.js
@@ -14,12 +14,25 @@
  * limitations under the License.
  */
 
-/* JS */
-import './js/AFB.js';
-
 /* CSS */
 import './styles/app.scss';
 
 document.addEventListener('DOMContentLoaded', function(){
+    SEATS.init();
     TEMPERATURE.init();
-});
\ No newline at end of file
+    FANSPEED.init();
+    BUTTONS.init();
+
+    KUKSA.init([
+        [PATHS.leftSeatWarmer, SEATS],
+        [PATHS.rightSeatWarmer, SEATS],
+        [PATHS.leftSeatTemperature, TEMPERATURE],
+        [PATHS.rightSeatTemperature, TEMPERATURE],
+        [PATHS.leftFanSpeed, FANSPEED],
+        [PATHS.airConditioning, BUTTONS],
+        [PATHS.recirculation, BUTTONS],
+        [PATHS.frontDefroster, BUTTONS],
+        [PATHS.rearDefroster, BUTTONS],
+        [PATHS.leftAirDistribution, BUTTONS],
+    ]);
+});
diff --git a/src/js/AFB.js b/src/js/AFB.js
deleted file mode 100644
index d6e6bfa..0000000
--- a/src/js/AFB.js
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * Copyright (C) 2017, 2018 "IoT.bzh"
- * Author: José Bollo <jose.bollo@iot.bzh>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-AFB = function(base, initialtoken){
-
-if (typeof base != "object")
-    base = { base: base, token: initialtoken };
-
-var initial = {
-    base: base.base || "api",
-    token: base.token || initialtoken || "HELLO",
-    host: base.host || window.location.host,
-    url: base.url || undefined
-};
-
-var urlws = initial.url || "ws://"+initial.host+"/"+initial.base;
-
-/*********************************************/
-/****                                     ****/
-/****             AFB_context             ****/
-/****                                     ****/
-/*********************************************/
-var AFB_context;
-{
-    var UUID = undefined;
-    var TOKEN = initial.token;
-
-    var context = function(token, uuid) {
-        this.token = token;
-        this.uuid = uuid;
-    }
-
-    context.prototype = {
-        get token() {return TOKEN;},
-        set token(tok) {if(tok) TOKEN=tok;},
-        get uuid() {return UUID;},
-        set uuid(id) {if(id) UUID=id;}
-    };
-
-    AFB_context = new context();
-}
-/*********************************************/
-/****                                     ****/
-/****             AFB_websocket           ****/
-/****                                     ****/
-/*********************************************/
-var AFB_websocket;
-{
-    var CALL = 2;
-    var RETOK = 3;
-    var RETERR = 4;
-    var EVENT = 5;
-
-    var PROTO1 = "x-afb-ws-json1";
-
-    AFB_websocket = function(on_open, on_abort) {
-        var u = urlws, p = '?';
-        if (AFB_context.token) {
-            u = u + '?x-afb-token=' + AFB_context.token;
-            p = '&';
-        }
-        if (AFB_context.uuid)
-            u = u + p + 'x-afb-uuid=' + AFB_context.uuid;
-        this.ws = new WebSocket(u, [ PROTO1 ]);
-        this.url = u;
-        this.pendings = {};
-        this.awaitens = {};
-        this.counter = 0;
-        this.ws.onopen = onopen.bind(this);
-        this.ws.onerror = onerror.bind(this);
-        this.ws.onclose = onclose.bind(this);
-        this.ws.onmessage = onmessage.bind(this);
-        this.onopen = on_open;
-        this.onabort = on_abort;
-    }
-
-    function onerror(event) {
-        var f = this.onabort;
-        if (f) {
-            delete this.onopen;
-            delete this.onabort;
-            f && f(this);
-        }
-        this.onerror && this.onerror(this);
-    }
-
-    function onopen(event) {
-        var f = this.onopen;
-        delete this.onopen;
-        delete this.onabort;
-        f && f(this);
-    }
-
-    function onclose(event) {
-        var err = {
-            jtype: 'afb-reply',
-            request: {
-                status:    'disconnected',
-                info: 'server hung up'
-            }
-        };
-        for (var id in this.pendings) {
-            try { this.pendings[id][1](err); } catch (x) {/*NOTHING*/}
-        }
-        this.pendings = {};
-        this.onclose && this.onclose();
-    }
-
-    function fire(awaitens, name, data) {
-        var a = awaitens[name];
-        if (a)
-            a.forEach(function(handler){handler(data);});
-        var i = name.indexOf("/");
-        if (i >= 0) {
-            a = awaitens[name.substring(0,i)];
-            if (a)
-                a.forEach(function(handler){handler(data);});
-        }
-        a = awaitens["*"];
-        if (a)
-            a.forEach(function(handler){handler(data);});
-    }
-
-    function reply(pendings, id, ans, offset) {
-        if (id in pendings) {
-            var p = pendings[id];
-            delete pendings[id];
-            try { p[offset](ans); } catch (x) {/*TODO?*/}
-        }
-    }
-
-    function onmessage(event) {
-        var obj = JSON.parse(event.data);
-        var code = obj[0];
-        var id = obj[1];
-        var ans = obj[2];
-        AFB_context.token = obj[3];
-        switch (code) {
-        case RETOK:
-            reply(this.pendings, id, ans, 0);
-            break;
-        case RETERR:
-            reply(this.pendings, id, ans, 1);
-            break;
-        case EVENT:
-        default:
-            fire(this.awaitens, id, ans);
-            break;
-        }
-    }
-
-    function close() {
-        this.ws.close();
-        this.ws.onopen =
-        this.ws.onerror =
-        this.ws.onclose =
-        this.ws.onmessage =
-        this.onopen =
-        this.onabort = function(){};
-    }
-
-    function call(method, request, callid) {
-        return new Promise((function(resolve, reject){
-            var id, arr;
-            if (callid) {
-                id = String(callid);
-                if (id in this.pendings)
-                    throw new Error("pending callid("+id+") exists");
-            } else {
-                do {
-                    id = String(this.counter = 4095 & (this.counter + 1));
-                } while (id in this.pendings);
-            }
-            this.pendings[id] = [ resolve, reject ];
-            arr = [CALL, id, method, request ];
-            if (AFB_context.token) arr.push(AFB_context.token);
-            this.ws.send(JSON.stringify(arr));
-        }).bind(this));
-    }
-
-    function onevent(name, handler) {
-        var id = name;
-        var list = this.awaitens[id] || (this.awaitens[id] = []);
-        list.push(handler);
-    }
-
-    AFB_websocket.prototype = {
-        close: close,
-        call: call,
-        onevent: onevent
-    };
-}
-/*********************************************/
-/****                                     ****/
-/****                                     ****/
-/****                                     ****/
-/*********************************************/
-return {
-    context: AFB_context,
-    ws: AFB_websocket
-};
-};
diff --git a/src/js/buttons.js b/src/js/buttons.js
index 5fcb521..76d2143 100644
--- a/src/js/buttons.js
+++ b/src/js/buttons.js
@@ -14,25 +14,66 @@
  * limitations under the License.
  */
 
-var buttons = {
+
+
+var values = {
     ac: false,
-    auto: false,
-    circulation: false,
-    down: false,
-    up: false,
-    right: false,
+    recirculation: false,
     rear: false,
     front: false
 };
 
-function update(node, value) {
-    node.setAttribute('value', value);
+var paths = {
+    ac: PATHS.airConditioning,
+    recirculation: PATHS.recirculation,
+    rear: PATHS.rearDefroster,
+    front: PATHS.frontDefroster,
+};
+
+var nodes = {}
+
+export function init() {
+    nodes[PATHS.airConditioning] = document.getElementById('ac');
+    nodes[PATHS.recirculation] = document.getElementById('recirculation');
+    nodes[PATHS.frontDefroster] = document.getElementById('front');
+    nodes[PATHS.rearDefroster] = document.getElementById('rear');
+    nodes['up'] = document.getElementById('up');
+    nodes['down'] = document.getElementById('down');
+    nodes['right'] = document.getElementById('right');
 }
 
-module.exports = {
-    toggle: function(node) {
-        var key = node.getAttribute('key');
-        buttons[key] = !buttons[key];
-        update(node, buttons[key]);
+export function update(path, value) {
+    if (path == PATHS.leftAirDistribution) {
+        if (value == 'UP') {
+            nodes['up'].setAttribute('value', true);
+            nodes['down'].setAttribute('value', false);
+            nodes['right'].setAttribute('value', false);
+        } else if (value == 'DOWN') {
+            nodes['down'].setAttribute('value', true);
+            nodes['up'].setAttribute('value', false);
+            nodes['right'].setAttribute('value', false);
+
+        } else if (value == 'MIDDLE') {
+            nodes['right'].setAttribute('value', true);
+            nodes['up'].setAttribute('value', false);
+            nodes['down'].setAttribute('value', false);
+        }
+    } else {
+        var node = nodes[path];
+        node.setAttribute('value', value);
     }
-}
\ No newline at end of file
+}
+
+export function toggle(node) {
+    var key = node.getAttribute('key');
+    values[key] = !values[key];
+    if (key == 'up') {
+        KUKSA.set(PATHS.leftAirDistribution, 'UP');
+    } else if (key == 'down') {
+        KUKSA.set(PATHS.leftAirDistribution, 'DOWN');
+    } else if (key == 'right') {
+        KUKSA.set(PATHS.leftAirDistribution, 'MIDDLE');
+    } else {
+        KUKSA.set(paths[key], values[key]);
+    }
+}
diff --git a/src/js/chair.js b/src/js/chair.js
deleted file mode 100644
index 5cd26e8..0000000
--- a/src/js/chair.js
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright 2019 Igalia, S.L.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-var left = 0;
-var right = 0;
-
-function update(node, value){
-    node.setAttribute('value', value);
-}
-
-module.exports = {
-    left: function(node) {
-        left = (left + 1) % 3;
-        update(node, left);
-    },
-    right: function(node) {
-        right = (right + 1) % 3;
-        update(node, right);
-    },
-}
\ No newline at end of file
diff --git a/src/js/fan_speed.js b/src/js/fan_speed.js
index 8b131b5..fa0ed01 100644
--- a/src/js/fan_speed.js
+++ b/src/js/fan_speed.js
@@ -15,15 +15,17 @@
  */
 
 var value = 0;
+var node = null;
 
-function update(node, value) {
+export function update(path, value) {
     node.value = value;
     node.parentNode.getElementsByTagName('progress')[0].value = value;
 }
 
-module.exports = {
-    set: function(node) {
-        value = node.value;
-        update(node, value);
-    }
-}
\ No newline at end of file
+export function init() {
+   node = document.getElementById('FanSpeed');
+}
+
+export function set() {
+    KUKSA.set(PATHS.leftFanSpeed, node.value);
+}
diff --git a/src/js/kuksa.js b/src/js/kuksa.js
new file mode 100644
index 0000000..9e9cc22
--- /dev/null
+++ b/src/js/kuksa.js
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2022 Igalia, S.L.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { v4 as uuidv4 } from 'uuid';
+
+const DEFAULT_TARGET = "wss://localhost:8090";
+
+// TODO: use an application token when needed
+// currently using https://github.com/eclipse/kuksa.val/blob/master/kuksa_certificates/jwt/super-admin.json.token
+const TEST_TOKEN = 
+    'eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiJrdWtzYS52YWwiLCJpc3MiOiJFY2xpcHNlIEtVS1NBIERldiIsImFkbWluIjp0cnVlLCJtb2RpZnlUcmVlIjp0cnVlLCJpYXQiOjE1MTYyMzkwMjIsImV4cCI6MTc2NzIyNTU5OSwia3Vrc2EtdnNzIjp7IioiOiJydyJ9fQ.p2cnFGH16QoQ14l6ljPVKggFXZKmD-vrw8G6Vs6DvAokjsUG8FHh-F53cMsE-GDjyZH_1_CrlDCnbGlqjsFbgAylqA7IAJWp9_N6dL5p8DHZTwlZ4IV8L1CtCALs7XVqvcQKHCCzB63Y8PgVDCAqpQSRb79JPVD4pZwkBKpOknfEY5y9wfbswZiRKdgz7o61_oFnd-yywpse-23HD6v0htThVF1SuGL1PuvGJ8p334nt9bpkZO3gaTh1xVD_uJMwHzbuBCF33_f-I5QMZO6bVooXqGfe1zvl3nDrPEjq1aPulvtP8RgREYEqE6b2hB8jouTiC_WpE3qrdMw9sfWGFbm04qC-2Zjoa1yYSXoxmYd0SnliSYHAad9aXoEmFENezQV-of7sc-NX1-2nAXRAEhaqh0IRuJwB4_sG7SvQmnanwkz-sBYxKqkoFpOsZ6hblgPDOPYY2NAsZlYkjvAL2mpiInrsmY_GzGsfwPeAx31iozImX75rao8rm-XucAmCIkRlpBz6MYKCjQgyRz3UtZCJ2DYF4lKqTjphEAgclbYZ7KiCuTn9HualwtEmVzHHFneHMKl7KnRQk-9wjgiyQ5nlsVpCCblg6JKr9of4utuPO3cBvbjhB4_ueQ40cpWVOICcOLS7_w0i3pCq1ZKDEMrYDJfz87r2sU9kw1zeFQk';
+
+var kuksa_context = {
+    authToken: TEST_TOKEN,
+    socket: undefined,
+    target: DEFAULT_TARGET,
+}
+
+var pathToHandler = null;
+
+function logReceivedMessage(data) {
+    console.log('Received message:', data)
+}
+
+function logConnectionStatus(status, event) {
+    console.log('Connection status:', status);
+}
+
+function kuksaws_onopen(event) {
+    logConnectionStatus('Connected.', event);
+
+    authorize();
+    subscribe(PATHS.leftAirDistribution);
+    subscribe(PATHS.leftFanSpeed);
+    subscribe(PATHS.leftSeatWarmer);
+    subscribe(PATHS.rightSeatWarmer);
+    subscribe(PATHS.leftSeatTemperature);
+    subscribe(PATHS.rightSeatTemperature);
+    subscribe(PATHS.airConditioning);
+    subscribe(PATHS.recirculation);
+    subscribe(PATHS.frontDefroster);
+    subscribe(PATHS.rearDefroster);
+}
+
+function kuksaws_onerror(event) {
+    logConnectionStatus('Failed to connect:', event);
+}
+
+function kuksaws_onmessage(event) {
+    logReceivedMessage(event.data);
+
+    var jsonData = JSON.parse(event.data);
+
+    if (jsonData.action == 'get' ||
+        jsonData.action =='subscription') {
+        updateVehicleInfo(jsonData);
+    }
+}
+
+function updateVehicleInfo(message) {
+    var value = message.data.dp.value;
+    var path = message.data.path;
+
+    if (!pathToHandler.has(path)) {
+        console.log('Handler not found for', path);
+        return;
+    }
+
+    var handler = pathToHandler.get(path);
+    handler.update(path, value)
+}
+
+function send(action, values) {
+    var uuid = uuidv4();
+    var data = Object.assign({
+        action: action,
+        tokens: kuksa_context.authToken,
+        requestId: uuid,
+    }, values);
+    var message = JSON.stringify(data);
+    console.log('Sent message:', message);
+    kuksa_context.socket.send(message);
+    return uuid;
+}
+
+function subscribe(path) {
+    return send('subscribe', { path: path });
+}
+
+function authorize() {
+    return send('authorize');
+}
+
+export function get(path) {
+    return send('get', { path: path });
+}
+
+export function set(path, value) {
+    return send('set', { path: path, value: value });
+}
+
+export function init(handlers) {
+    pathToHandler = new Map(handlers);
+    if (kuksa_context.socket == undefined) {
+        kuksa_context.socket = new WebSocket(kuksa_context.target);
+        kuksa_context.socket.onopen = kuksaws_onopen;
+        kuksa_context.socket.onerror = kuksaws_onerror;
+        kuksa_context.socket.onmessage = kuksaws_onmessage;
+    }
+}
diff --git a/src/js/paths.js b/src/js/paths.js
new file mode 100644
index 0000000..4f3c5d3
--- /dev/null
+++ b/src/js/paths.js
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2022 Igalia, S.L.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//  https://github.com/COVESA/vehicle_signal_specification/blob/master/spec/Cabin/SingleHVACStation.vspec
+export const leftAirDistribution = 'Vehicle.Cabin.HVAC.Station.Row1.Left.AirDistribution';
+export const leftFanSpeed = 'Vehicle.Cabin.HVAC.Station.Row1.Left.FanSpeed';
+export const leftSeatTemperature = 'Vehicle.Cabin.Seat.Row1.Pos1.Heating';
+export const rightSeatTemperature = 'Vehicle.Cabin.Seat.Row1.Pos2.Heating';
+
+// https://github.com/COVESA/vehicle_signal_specification/blob/master/spec/Cabin/SingleSeat.vspec
+export const leftSeatWarmer = 'Vehicle.Cabin.Seat.Row1.Pos1.Switch.IsWarmerEngaged';
+export const rightSeatWarmer = 'Vehicle.Cabin.Seat.Row1.Pos2.Switch.IsWarmerEngaged';
+
+// https://github.com/COVESA/vehicle_signal_specification/blob/master/spec/Cabin/HVAC.vspec
+export const recirculation = 'Vehicle.Cabin.HVAC.IsRecirculationActive';
+export const airConditioning = 'Vehicle.Cabin.HVAC.IsAirConditioningActive';
+export const frontDefroster = 'Vehicle.Cabin.HVAC.IsFrontDefrosterActive';
+export const rearDefroster = 'Vehicle.Cabin.HVAC.IsRearDefrosterActive';
diff --git a/src/js/seats.js b/src/js/seats.js
new file mode 100644
index 0000000..3afc481
--- /dev/null
+++ b/src/js/seats.js
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019 Igalia, S.L.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var values = {
+    leftAirDistribution: 'middle',
+    leftSeatWarmer: false,
+    rightSeatWarmer: false,
+};
+
+var controls = {
+    leftSeatWarmer: null,
+    rightSeatWarmer: null,
+};
+
+export function init() {
+   controls.leftSeatWarmer = document.getElementById('LeftChair');
+   controls.rightSeatWarmer = document.getElementById('RightChair');
+}
+
+export function update(path, value) {
+    switch (path) {
+        case PATHS.leftSeatWarmer:
+            values.leftSeatWarmer = value;
+            controls.leftSeatWarmer.setAttribute('value', values.leftSeatWarmer);
+            break;
+        case PATHS.rightSeatWarmer:
+            values.rightSeatWarmer = value;
+            controls.rightSeatWarmer.setAttribute('value', values.rightSeatWarmer);
+            break;
+    }
+}
+
+export function left() {
+    KUKSA.set(PATHS.leftSeatWarmer, !values.leftSeatWarmer);
+}
+export function right() {
+    KUKSA.set(PATHS.rightSeatWarmer, !values.rightSeatWarmer);
+}
diff --git a/src/js/temperature.js b/src/js/temperature.js
index 3a394a1..1e35ddf 100644
--- a/src/js/temperature.js
+++ b/src/js/temperature.js
@@ -14,8 +14,10 @@
  * limitations under the License.
  */
 
-var left = 22;
-var right = 22;
+var values = {
+    leftTemperature: 22,
+    rightTemperature: 22,
+}
 
 var lowTemperature = 15;
 var hiTemperature = 30;
@@ -24,6 +26,12 @@ var temperatures = [];
 var isScrolling;
 var elementHeight;
 
+var controls = {
+    leftTemperatureNode: null,
+    rightTemperatureNode: null,
+};
+
+
 function createTemperatureElement() {
     var element = document.createElement('div');
     element.classList = ['temperature'];
@@ -32,7 +40,21 @@ function createTemperatureElement() {
     return element;
 }
 
-function update(node, index) {
+export function update(path, value) {
+    var temperature, node;
+    if (path == PATHS.rightSeatTemperature) {
+        values.rightTemperature = value;
+        temperature = values.rightTemperature;
+        node = controls.rightTemperatureNode;
+    } else {
+        values.leftTemperature = value;
+        temperature = values.leftTemperature;
+        node = controls.leftTemperatureNode;
+    }
+    setSemperature(node, temperatures.indexOf(temperature));
+}
+
+function setSemperature(node, index) {
     node.scrollTop = index*elementHeight;
 
     for( var i=0; i<node.children.length; i++) {
@@ -41,49 +63,49 @@ function update(node, index) {
     node.children[index].setAttribute('enabled', true);
 }
 
-module.exports = {
-    left: function(node) {
-        clearTimeout(isScrolling);
-
-        isScrolling = setTimeout(function(){
-            var index = Math.round(node.scrollTop/elementHeight);
-            left = temperatures[index];
-            update(node, index);
-            console.log('LEFT', left);
-        }, 100);
-    },
-    right: function(node) {
-        clearTimeout(isScrolling);
-
-        isScrolling = setTimeout(function(){
-            var index = Math.round(node.scrollTop/elementHeight);
-            right = temperatures[index];
-            update(node, index);
-            console.log('RIGHT', right);
-        }, 100);
-    },
-    init: function() {
-        var leftTemperature = document.getElementById('lefttemperature');
-        var rightTemperature = document.getElementById('righttemperature');
-        elementHeight = leftTemperature.offsetHeight/2;
-
-        for( var i=lowTemperature; i<=hiTemperature; i++) {
-            var element = createTemperatureElement();
-            if( i === lowTemperature) {
-                element.innerHTML = 'LO';
-            } else if( i === hiTemperature ) {
-                element.innerHTML = 'HI';
-            } else {
-                element.innerHTML = i+'º';
-            }
-            leftTemperature.appendChild(element);
-            rightTemperature.appendChild(element.cloneNode(true));
-            temperatures[temperatures.length] = i;
-        }
-        leftTemperature.appendChild(createTemperatureElement());
-        rightTemperature.appendChild(createTemperatureElement());
+export function left() {
+    clearTimeout(isScrolling);
+
+    isScrolling = setTimeout(function() {
+        var index = Math.round(controls.leftTemperatureNode.scrollTop / elementHeight);
+        values.leftTemperature = temperatures[index];
+        console.log('LEFT', values.leftTemperature);
+        KUKSA.set(PATHS.leftSeatTemperature, values.leftTemperature);
+    }, 100);
+}
+
+export function right() {
+    clearTimeout(isScrolling);
+
+    isScrolling = setTimeout(function() {
+        var index = Math.round(controls.rightTemperatureNode.scrollTop / elementHeight);
+        values.rightTemperature = temperatures[index];
+        console.log('RIGHT', values.rightTemperature);
+        KUKSA.set(PATHS.rightSeatTemperature, values.rightTemperature);
+    }, 100);
+}
 
-        update(leftTemperature, temperatures.indexOf(left));
-        update(rightTemperature, temperatures.indexOf(right));
+export function init() {
+    controls.leftTemperatureNode = document.getElementById('lefttemperature');
+    controls.rightTemperatureNode = document.getElementById('righttemperature');
+    elementHeight = controls.leftTemperatureNode.offsetHeight / 2;
+
+    for (var i = lowTemperature; i <= hiTemperature; i++) {
+        var element = createTemperatureElement();
+        if (i === lowTemperature) {
+            element.innerHTML = 'LO';
+        } else if (i === hiTemperature) {
+            element.innerHTML = 'HI';
+        } else {
+            element.innerHTML = i + 'º';
+        }
+        controls.leftTemperatureNode.appendChild(element);
+        controls.rightTemperatureNode.appendChild(element.cloneNode(true));
+        temperatures[temperatures.length] = i;
     }
-}
\ No newline at end of file
+    controls.leftTemperatureNode.appendChild(createTemperatureElement());
+    controls.rightTemperatureNode.appendChild(createTemperatureElement());
+
+    setSemperature(controls.leftTemperatureNode, temperatures.indexOf(values.leftTemperature));
+    setSemperature(controls.rightTemperatureNode, temperatures.indexOf(values.rightTemperature));
+}
diff --git a/src/styles/landscape.scss b/src/styles/landscape.scss
index 7acca5e..765443c 100644
--- a/src/styles/landscape.scss
+++ b/src/styles/landscape.scss
@@ -14,9 +14,11 @@
         }
 
         .center {
+            width: 75%;
             position: relative;
             float: left;
             height: 20%;
+            margin-left: 150px;
             margin-top: 40px;
 
             .item {
@@ -24,16 +26,14 @@
 
                 .button {
                     .label {
-                        font-size: 4em;
-                        margin-top: -45%;
+                        font-size: 2.5em;
                     }
                 }
             }
 
             .item.ac {
                 .label {
-                    font-size: 4em;
-                    margin-top: -45%;
+                    font-size: 2.5em;
                 }
             }
         }
@@ -58,4 +58,4 @@
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/styles/main.scss b/src/styles/main.scss
index 5d2d950..7ab190f 100644
--- a/src/styles/main.scss
+++ b/src/styles/main.scss
@@ -133,48 +133,42 @@ body {
                 padding-top:75%;
             }
 
-            &.ac, &.auto {
+            &.ac {
+                position: relative;
+
                 .label {
                     font-weight: bold;
                     font-size: 2.5rem;
-                    text-align: center;
-                    margin-top: -50%;
+                    position: absolute;
+                    top: 50%;
+                    left: 50%;
+                    transform: translate(-50%, -50%);
                 }
             }
 
             &.seat {
                 img {
                     width: 50%;
-                    margin: 0 25%;
+                    margin: 10% 25%;
                 }
 
-                &[value="0"] {
-                    .one, .two {
-                        display: none;
-                    }
+                &[value="false"] {
                     .off {
                         display: block;
                     }
-                }
-
-                &[value="1"] {
-                    .off, .two {
+                    .on {
                         display: none;
                     }
-                    .one {
-                        display: block;
-                    }
                 }
 
-                &[value="2"] {
-                    .one, .off {
+                &[value="true"] {
+                    .off {
                         display: none;
                     }
-                    .two {
+                    .on {
                         display: block;
                     }
                 }
-
             }
 
             &.circulation {
diff --git a/webpack.config.js b/webpack.config.js
index 9c87768..43bc54c 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -9,9 +9,11 @@ module.exports = {
     mode: 'production',
     entry: {
         index: './src/index.js',
+        PATHS: './src/js/paths.js',
+        SEATS: './src/js/seats.js',
         FANSPEED: './src/js/fan_speed.js',
-        CHAIR: './src/js/chair.js',
-        BUTTON: './src/js/buttons.js',
+        KUKSA: './src/js/kuksa.js',
+        BUTTONS: './src/js/buttons.js',
         TEMPERATURE: './src/js/temperature.js'
     },
     output: {
@@ -83,7 +85,6 @@ module.exports = {
         ]
     },
     devServer: {
-        contentBase: path.join(__dirname, 'dist'),
         compress: true,
         port: 9000
     }