diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..ab212bb
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,45 @@
+# This is a basic workflow to help you get started with Actions
+name: Publish to NPM
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+on:
+  push:
+    branches:
+      - master
+      - dev
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v1.1.0
+      with:
+        node-version: 12.15
+        registry-url: https://registry.npmjs.org/
+  
+    - name: Install npm dependencies
+      run: npm i
+
+    - name: Publish release
+      run: npm publish --access public
+      if: github.ref == 'refs/heads/master'
+      env:
+        NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        
+    - name: Update the package version
+      if: github.ref == 'refs/heads/dev'
+      run: node scripts/update-package-version.js $GITHUB_RUN_ID
+        
+    - name: Publish beta release
+      run: npm publish --tag next --access public
+      if: github.ref == 'refs/heads/dev'
+      env:
+        NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b5519e0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+node_modules/
+dist
+debug
+
+.DS_Store
\ No newline at end of file
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..8a7c738
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,7 @@
+node_modules
+src
+scripts
+
+.DS_Store
+.gitignore
+tsconfig.json
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..4dc68c6
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,2 @@
+# Changelog
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..27ed765
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Elio Struyf
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..b336939
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+# Presence switch connected to Microsoft Graph
+
+*To be added*
+
+## Local development
+
+```
+nvm use v12
+cd ~/.nvm/versions/node/v12.15.0/bin/
+
+homebridge -D -I -U ~/nodejs/homebridge/homebridge-presence-switch-msgraph/debug -P ~/nodejs/homebridge/homebridge-presence-switch-msgraph
+```
+
+## Config
+
+- AppId
+- API URL to call
+- Light states
+  - Available
+  - Away
+  - Bussy
+- Light settings
+  - type: none, blink, ...
+  - brightness: 0.4 - 1
\ No newline at end of file
diff --git a/config.schema.json b/config.schema.json
new file mode 100644
index 0000000..0b3275e
--- /dev/null
+++ b/config.schema.json
@@ -0,0 +1,125 @@
+{
+  "pluginAlias": "presence-switch",
+  "pluginType": "accessory",
+  "singular": false,
+  "headerDisplay": "Microsoft Graph Presence Switch",
+  "footerDisplay": "Plugin which allows you retrieve your presence via the Microsoft Graph and call your busy light API.",
+  "schema": {
+    "type": "object",
+    "properties": {
+      "name": {
+        "title": "Name",
+        "type": "string",
+        "default": "Presence Indicator",
+        "required": true
+      },
+      "appId": {
+        "title": "Azure AD application ID",
+        "description": "The GUID of the Azure AD app.",
+        "type": "string",
+        "required": true
+      },
+      "interval": {
+        "title": "Interval",
+        "description": "Polling interval.",
+        "type": "integer",
+        "default": 1
+      },
+      "setColorApi": {
+        "title": "Set color API",
+        "description": "API to set the color",
+        "type": "string",
+        "required": true
+      },
+      "offApi": {
+        "title": "Off API",
+        "description": "API to turn off your device",
+        "type": "string",
+        "required": true
+      },
+      "onApi": {
+        "title": "On API",
+        "description": "API to turn on your device",
+        "type": "string",
+        "required": true
+      },
+      "startTime": {
+        "title": "Start time",
+        "description": "Define the time when you start your working day (ex: 8:30).",
+        "type": "string",
+        "default": ""
+      },
+      "endTime": {
+        "title": "End time",
+        "description": "Define the time when you end your working day (ex: 18:00).",
+        "type": "string",
+        "default": ""
+      },
+      "weekend": {
+        "title": "Weekend checks",
+        "description": "Do you want to check in the weekends",
+        "type": "boolean",
+        "default": false
+      },
+      "statusColors": {
+        "title": "Status color",
+        "description": "Define the color values for the following states: 'available', 'busy', and 'away'.",
+        "type": "object",
+        "properties": {
+          "available": { 
+            "type": "object",
+            "properties": {
+              "red": "string",
+              "green": "string",
+              "blue": "string"
+            }
+          },
+          "busy": { 
+            "type": "object",
+            "properties": {
+              "red": "string",
+              "green": "string",
+              "blue": "string"
+            } 
+          },
+          "away": { 
+            "type": "object" ,
+            "properties": {
+              "red": "string",
+              "green": "string",
+              "blue": "string"
+            }
+          }
+        }
+      },
+      "lightType": {
+        "title": "Light type",
+        "description": "Define the type of light you want to show.",
+        "type": "string",
+        "default": "switch",
+        "oneOf": [
+          {
+            "title": "Always on",
+            "enum": [ "on" ]
+          },
+          {
+            "title": "Blink",
+            "enum": [ "blink" ]
+          },
+          {
+            "title": "Hearthbeat",
+            "enum": [ "hearthbeat" ]
+          }
+        ]
+      },
+      "debug": {
+        "title": "Debug",
+        "type": "boolean",
+        "default": false,
+        "required": false
+      }
+    }
+  },
+  "form": null,
+  "display": null
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..13d7f15
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,1019 @@
+{
+  "name": "homebridge-presence-switch-msgraph",
+  "version": "0.0.1",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@types/color-name": {
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+    },
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..32f007b
--- /dev/null
+++ b/package.json
@@ -0,0 +1,38 @@
+{
+  "name": "homebridge-presence-switch-msgraph",
+  "version": "0.0.1",
+  "description": "Switch for Microsoft Graph presence status",
+  "license": "MIT",
+  "keywords": [
+    "homebridge-plugin"
+  ],
+  "author": "Elio Struyf",
+  "main": "dist/index.js",
+  "scripts": {
+    "prepublish": "tsc",
+    "start": "tsc",
+    "publish:next": "npm publish --tag next"
+  },
+  "repository": {
+    "type": "git",
+    "url": ""
+  },
+  "bugs": {},
+  "engines": {
+    "node": ">=0.12.0",
+    "homebridge": ">=0.2.0"
+  },
+  "dependencies": {
+    "adal-node": "0.2.1",
+    "homebridge-lib": "4.5.6",
+    "node-fetch": "2.6.0",
+    "node-persist": "3.0.5"
+  },
+  "devDependencies": {
+    "@types/node-fetch": "2.5.5",
+    "@types/node-persist": "3.0.0",
+    "hap-nodejs": "0.4.51",
+    "homebridge": "0.4.53",
+    "typescript": "3.8.3"
+  }
+}
diff --git a/scripts/update-package-version.js b/scripts/update-package-version.js
new file mode 100644
index 0000000..a16825e
--- /dev/null
+++ b/scripts/update-package-version.js
@@ -0,0 +1,6 @@
+const fs = require('fs');
+const path = require('path');
+const packageJson = require('../package.json');
+packageJson.version += `-beta.${process.argv[process.argv.length-1].substr(0, 7)}`;
+console.log(packageJson.version);
+fs.writeFileSync(path.join(path.resolve('.'), 'package.json'), JSON.stringify(packageJson, null, 2));
diff --git a/src/accessories/PresenceAccessory.ts b/src/accessories/PresenceAccessory.ts
new file mode 100644
index 0000000..c6e5616
--- /dev/null
+++ b/src/accessories/PresenceAccessory.ts
@@ -0,0 +1,205 @@
+import { Homebridge, HomebridgeAccessory, PresenceConfig, Logger, Presence, Availability, StatusColors, RGB } from '../models';
+import 'hap-nodejs';
+import persist from 'node-persist';
+import { Auth, splitHours } from '../helpers';
+import { MsGraphService, BusyLightService } from '../services';
+import { Characteristic } from 'hap-nodejs';
+
+const MSGRAPH_URL = `https://graph.microsoft.com`;
+const MSGRAPH_PRESENCE_PATH = `beta/me/presence`;
+
+export class PresenceAccessory implements HomebridgeAccessory {
+  private static api: Homebridge = null;
+  private static service: HAPNodeJS.Service = null;
+  private static characteristic: HAPNodeJS.Characteristic = null;
+  private static version: string = null;
+
+  private accessoryService: HAPNodeJS.Service = null;
+  private storage: typeof persist;
+  private auth: Auth = null;
+
+  private readonly defaultColors: StatusColors = {
+    available: {
+      red: 0,
+      green: 144,
+      blue: 0
+    },
+    away: {
+      red: 255,
+      green: 191,
+      blue: 0
+    },
+    busy: {
+      red: 179,
+      green: 0,
+      blue: 0
+    }
+  };
+
+  private config: PresenceConfig = {
+    name: null,
+    accessory: null,
+    appId: null,
+    interval: 1, // Every minute
+    setColorApi: null,
+    offApi: null,
+    onApi: null,
+    startTime: null,
+    endTime: null,
+    lightType: null,
+    statusColors: this.defaultColors,
+    weekend: false,
+    debug: false
+  };
+  
+  /**
+   * Initialize the accessory registration
+   * 
+   * @param homebridge 
+   * @param packageJSON 
+   * @param platformName 
+   */
+  public static register(homebridge: Homebridge, packageJSON: any, platformName: string) {
+    console.log(`The ${packageJSON.name} plugin version is: ${packageJSON.version}. Installed on Homebridge version: ${homebridge.version}.`);
+
+    this.api = homebridge;
+    this.service = homebridge.hap.Service;
+    this.characteristic = homebridge.hap.Characteristic;
+    this.version = packageJSON.version;
+    
+    homebridge.registerAccessory(packageJSON.name, platformName, PresenceAccessory);
+  }
+
+  constructor(private log: Logger, options: PresenceConfig, private api: Homebridge) {
+    // Overwrite the default config
+    this.config = Object.assign({}, this.config, options);
+
+    // Register new switch
+    this.accessoryService = new PresenceAccessory.service.Switch(this.config.name, null);
+    this.accessoryService.getCharacteristic(Characteristic.On).updateValue(false);
+
+    // Initialize the accessory
+    this.init();
+  }
+
+  /**
+   * Return the new accessory service
+   */
+  public getServices() {
+    const informationService = new (PresenceAccessory.service as any).AccessoryInformation();
+    const characteristic = PresenceAccessory.characteristic;
+    informationService.setCharacteristic(characteristic.Manufacturer, 'Elio Struyf')
+                      .setCharacteristic(characteristic.Model, 'Presence Indicator')
+                      .setCharacteristic(characteristic.SerialNumber, 'PI_01')
+                      .setCharacteristic(characteristic.FirmwareRevision, PresenceAccessory.version);
+    return [informationService, this.accessoryService];
+  }
+
+  /**
+   * Initialize the button
+   */
+  private async init() {
+    const storePath = PresenceAccessory.api.user.persistPath();
+    this.storage = persist;
+    await this.storage.init({
+      dir: storePath,
+      forgiveParseErrors: true
+    });
+
+    this.auth = new Auth(this.config.appId, this.storage);
+    this.auth.ensureAccessToken(MSGRAPH_URL, this.log, true).then(async (accessToken) => {
+      await BusyLightService.get(this.config.onApi, this.log, this.config.debug);
+
+      if (accessToken) {
+        this.presencePolling();
+      }
+    });
+  }
+
+  /**
+   * Presence polling
+   */
+  private presencePolling = async () => {
+    const accessToken = await this.auth.ensureAccessToken(MSGRAPH_URL, this.log, this.config.debug);
+    if (accessToken) {
+      const shouldFetch = this.shouldCheckPresence();
+
+      if (shouldFetch) {
+        const presence: Presence = await MsGraphService.get(`${MSGRAPH_URL}/${MSGRAPH_PRESENCE_PATH}`, accessToken, this.log, this.config.debug);
+        if (presence && presence.availability) {
+          const availability = this.getAvailability(presence.availability);
+          let color: RGB = this.config.statusColors[availability.toLowerCase()];
+          if (!color || (!color.red && !color.green && !color.blue)) {
+            color = this.defaultColors[availability.toLowerCase()];
+          }
+          await BusyLightService.post(this.config.setColorApi, color, this.log, this.config.debug);
+        }
+      } else {
+        await BusyLightService.get(this.config.offApi, this.log, this.config.debug);
+      }
+    }
+
+    setTimeout(() => {
+      this.presencePolling();
+    }, (this.config.interval >= 1 ? this.config.interval : 1) * 60 * 1000);
+  }
+
+  /**
+   * Retrieve the availability status
+   * 
+   * @param presence 
+   */
+  private getAvailability(presence: Availability) {
+    switch(presence) {
+      case Availability.Available:
+      case Availability.AvailableIdle:
+        return Availability.Available;
+      case Availability.Away:
+      case Availability.BeRightBack:
+        return Availability.Away;
+      case Availability.Busy:
+      case Availability.BusyIdle:
+      case Availability.DoNotDisturb:
+        return Availability.Busy;
+      case Availability.Offline:
+      case Availability.PresenceUnknown:
+      default:
+        return Availability.Offline;
+    }
+  }
+
+  /**
+   * Should the accessory check the presence
+   */
+  private shouldCheckPresence() {
+    // Check if switch is on or off
+    const state = (this.accessoryService.getCharacteristic(Characteristic.On) as any).value;
+    if (this.config.debug) {
+      this.log.info(`Current accessory state is: ${JSON.stringify(state)}`);
+    }
+    if (!state) {
+      return false;
+    }
+
+    const startTimeSplit = splitHours(this.config.startTime);
+    const endTimeSplit = splitHours(this.config.endTime);
+    const crntDate = new Date();
+
+    if(!this.config.weekend && (crntDate.getDay() == 6 || crntDate.getDay() == 0)) {
+      if (this.config.debug) {
+        this.log.info(`It's weekend, accessory will not set the busy light.`);
+      }
+      return false;
+    }
+
+    if (startTimeSplit && (crntDate.getHours() < startTimeSplit.hour || crntDate.getHours() === startTimeSplit.hour && crntDate.getMinutes() < startTimeSplit.minutes)) {
+      return false;
+    }
+
+    if (endTimeSplit && (crntDate.getHours() > endTimeSplit.hour || crntDate.getHours() === endTimeSplit.hour && crntDate.getMinutes() > endTimeSplit.minutes)) {
+      return false;
+    }
+
+    return true;
+  }
+}
diff --git a/src/accessories/index.ts b/src/accessories/index.ts
new file mode 100644
index 0000000..49d5f72
--- /dev/null
+++ b/src/accessories/index.ts
@@ -0,0 +1 @@
+export * from './PresenceAccessory';
diff --git a/src/helpers/Auth.ts b/src/helpers/Auth.ts
new file mode 100644
index 0000000..1028d38
--- /dev/null
+++ b/src/helpers/Auth.ts
@@ -0,0 +1,197 @@
+import { AuthenticationContext, TokenResponse, ErrorResponse, UserCodeInfo, Logging, LoggingLevel } from 'adal-node';
+import { Logger, AccessToken } from '../models';
+import persist from 'node-persist';
+
+const MS_LOGIN_URL = "https://login.microsoftonline.com";
+
+export interface Hash<TValue> {
+  [key: string]: TValue;
+}
+
+class AuthService {
+  connected: boolean = false;
+  refreshToken?: string;
+  accessTokens: Hash<AccessToken>;
+  tenantId?: string;
+
+  constructor() {
+    this.accessTokens = {};
+  }
+
+  public logout(): void {
+    this.connected = false;
+    this.accessTokens = {};
+    this.refreshToken = undefined;
+    this.tenantId = undefined;
+  }
+}
+
+export class Auth {
+  private authCtx: AuthenticationContext = null;
+  private service: AuthService = null;
+  private userCodeInfo?: UserCodeInfo;
+
+  constructor(private appId: string, private storage: typeof persist) {
+    this.service = new AuthService();
+    this.authCtx = new AuthenticationContext(`${MS_LOGIN_URL}/common`)
+  }
+
+  /**
+   * Retrieve an accessToken
+   * 
+   * @param resource 
+   * @param log 
+   * @param debug 
+   * @param fetchNew 
+   */
+  public async ensureAccessToken(resource: string, log: Logger, debug: boolean = false, fetchNew: boolean = false): Promise<string | null> {
+    try {
+      const now: Date = new Date();
+      const accessToken: AccessToken | undefined = this.service.accessTokens[resource];
+      const expiresOn: Date = accessToken ? new Date(accessToken.expiresOn) : new Date(0);
+
+      // Check if there is still an accessToken available
+      if (!fetchNew && accessToken && expiresOn > now) {
+        if (debug) {
+          log.info(`Existing access token ${accessToken.value} still valid. Returning...`);
+        }
+        return accessToken.value;
+      } else {
+        if (debug) {
+          if (!accessToken) {
+            log.warn(`No token found for resource ${resource}`);
+          } else {
+            log.warn(`Access token expired. Token: ${accessToken.value}, ExpiresAt: ${accessToken.expiresOn}`);
+          }
+        }
+      }
+
+      let getTokenPromise = this.ensureAccessTokenWithDeviceCode;
+      if (this.service.refreshToken) {
+        getTokenPromise = this.ensureAccessTokenWithRefreshToken;
+      }
+
+      const tokenResponse = await getTokenPromise(resource, log, debug);
+      if (!tokenResponse) {
+        return null;
+      }
+
+      this.service.accessTokens[resource] = {
+        expiresOn: tokenResponse.expiresOn as string,
+        value: tokenResponse.accessToken
+      };
+      this.service.refreshToken = tokenResponse.refreshToken;
+      this.service.connected = true;
+
+      await this.storeConnectionInfo(resource);
+
+      return this.service.accessTokens[resource].value;
+    } catch (error) {
+      log.error(`Failed to retrieve an accessToken: ${error.message}`);
+      return null;
+    }
+  }
+
+  /**
+   * Cancel the device token flow
+   */
+  public cancel(): void {
+    if (this.userCodeInfo) {
+      this.authCtx.cancelRequestToGetTokenWithDeviceCode(this.userCodeInfo as UserCodeInfo, (error: Error, response: TokenResponse | ErrorResponse): void => { });
+    }
+  }
+
+  /**
+   * Retrieve a new accessToken via the device flow
+   * 
+   * @param resource
+   * @param log
+   * @param debug
+   */
+  private ensureAccessTokenWithDeviceCode = (resource: string, log: Logger, debug: boolean): Promise<TokenResponse> => {
+    if (debug) {
+      log.info(`Starting Auth.ensureAccessTokenWithDeviceCode. resource: ${resource}, debug: ${debug}`);
+    }
+
+    return new Promise<TokenResponse>((resolve: (tokenResponse: TokenResponse) => void, reject: (err: any) => void) => {
+      if (debug) {
+        log.info('No existing refresh token. Starting new device code flow...');
+      }
+
+      this.authCtx.acquireUserCode(resource, this.appId as string, 'en-us',
+        (error: Error, response: UserCodeInfo): void => {
+          if (debug) {
+            log.info('Response:');
+            log.info(response);
+            log.info('');
+          }
+
+          if (error) {
+            reject((response && (response as any).error_description) || error.message);
+            return;
+          }
+
+          log.info(response.message);
+
+          this.userCodeInfo = response;
+          this.authCtx.acquireTokenWithDeviceCode(resource, this.appId as string, response,
+            (error: Error, response: TokenResponse | ErrorResponse): void => {
+              if (debug) {
+                log.info('Response:');
+                log.info(response);
+                log.info('');
+              }
+
+              if (error) {
+                reject((response && (response as any).error_description) || error.message || (error as any).error_description);
+                return;
+              }
+
+              this.userCodeInfo = undefined;
+              resolve(<TokenResponse>response);
+            });
+        });
+    });
+  }
+
+  /**
+   * Retrieve a new accessToken via the refresh token
+   * 
+   * @param resource
+   * @param log
+   * @param debug
+   */
+  private ensureAccessTokenWithRefreshToken(resource: string, log: Logger, debug: boolean): Promise<TokenResponse> {
+    return new Promise<TokenResponse>((resolve: (tokenResponse: TokenResponse) => void, reject: (error: any) => void): void => {
+      if (debug) {
+        log.info(`Retrieving new access token using existing refresh token ${this.service.refreshToken}`);
+      }
+
+      this.authCtx.acquireTokenWithRefreshToken(
+        this.service.refreshToken as string,
+        this.appId as string,
+        resource,
+        (error: Error, response: TokenResponse | ErrorResponse): void => {
+          if (debug) {
+            log.info('Response:');
+            log.info(response);
+            log.info('');
+          }
+
+          if (error) {
+            reject((response && (response as any).error_description) || error.message);
+            return;
+          }
+
+          resolve(<TokenResponse>response);
+        });
+    });
+  }
+
+  /**
+   * Store the connection information
+   */
+  private storeConnectionInfo = async (resource: string): Promise<void> => {
+    await this.storage.set(`${this.appId}-${resource}`, JSON.stringify(this.service));
+  }
+}
\ No newline at end of file
diff --git a/src/helpers/TimeHelpers.ts b/src/helpers/TimeHelpers.ts
new file mode 100644
index 0000000..7d7fcf4
--- /dev/null
+++ b/src/helpers/TimeHelpers.ts
@@ -0,0 +1,12 @@
+
+export const splitHours = (time: string): { hour: number, minutes: number} | null => {
+  if (time && time.includes(":")) {
+    const daySplit = time.split(":");
+    return {
+      hour: parseInt(daySplit[0]),
+      minutes: parseInt(daySplit[1])
+    }
+  }
+
+  return null;
+}
\ No newline at end of file
diff --git a/src/helpers/index.ts b/src/helpers/index.ts
new file mode 100644
index 0000000..f471df4
--- /dev/null
+++ b/src/helpers/index.ts
@@ -0,0 +1,2 @@
+export * from './Auth';
+export * from './TimeHelpers';
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..465a799
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,9 @@
+import { PresenceAccessory } from './accessories';
+import { Homebridge } from './models';
+const packageJSON = require('../package.json');
+
+const HOMEBRIDGE_PLATFORM_NAME = "presence-switch";
+
+export default function (homebridge: Homebridge) {
+  PresenceAccessory.register(homebridge, packageJSON, HOMEBRIDGE_PLATFORM_NAME);
+};
\ No newline at end of file
diff --git a/src/models/AccessToken.ts b/src/models/AccessToken.ts
new file mode 100644
index 0000000..37aa3a8
--- /dev/null
+++ b/src/models/AccessToken.ts
@@ -0,0 +1,4 @@
+export interface AccessToken {
+  expiresOn: string;
+  value: string;
+}
\ No newline at end of file
diff --git a/src/models/Availability.ts b/src/models/Availability.ts
new file mode 100644
index 0000000..8c4e4e1
--- /dev/null
+++ b/src/models/Availability.ts
@@ -0,0 +1,11 @@
+export enum Availability {
+  Available = "Available", 
+  AvailableIdle = "AvailableIdle", 
+  Away = "Away", 
+  BeRightBack = "BeRightBack", 
+  Busy = "Busy",
+  BusyIdle = "BusyIdle", 
+  DoNotDisturb = "DoNotDisturb", 
+  Offline = "Offline",
+  PresenceUnknown = "PresenceUnknown"
+}
\ No newline at end of file
diff --git a/src/models/Homebridge.ts b/src/models/Homebridge.ts
new file mode 100644
index 0000000..33ff116
--- /dev/null
+++ b/src/models/Homebridge.ts
@@ -0,0 +1,126 @@
+export interface Homebridge {
+  _accessories: Accessories;
+  _platforms: Accessories;
+  _configurableAccessories: Accessories;
+  _dynamicPlatforms: Accessories;
+  version: number;
+  serverVersion: string;
+  hap: Hap;
+  user: User;
+  hapLegacyTypes: HapLegacyTypes;
+  platformAccessory: any;
+  _events: Accessories;
+  _eventsCount: number;
+
+  registerAccessory: (pluginName: string, platformName: string, constructor: any) => void;
+  registerPlatform: (pluginName: string, platformName: string, constructor: any, dynamic: boolean) => void;
+  registerPlatformAccessories: (pluginName: string, platformName: string, accessories: Accessories) => void;
+
+  updatePlatformAccessories: (accessories: Accessories) => void;
+
+  unregisterPlatformAccessories: (pluginName: string, platformName: string, accessories: Accessories) => void;
+
+  on: (eventName: string, callback: () => void) => void;
+}
+
+export interface HapLegacyTypes {
+  OTHER_TCTYPE: number;
+  FAN_TCTYPE: number;
+  GARAGE_DOOR_OPENER_TCTYPE: number;
+  LIGHTBULB_TCTYPE: number;
+  DOOR_LOCK_TCTYPE: number;
+  OUTLET_TCTYPE: number;
+  SWITCH_TCTYPE: number;
+  THERMOSTAT_TCTYPE: number;
+  SENSOR_TCTYPE: number;
+  ALARM_SYSTEM_TCTYPE: number;
+  DOOR_TCTYPE: number;
+  WINDOW_TCTYPE: number;
+  WINDOW_COVERING_TCTYPE: number;
+  PROGRAMMABLE_SWITCH_TCTYPE: number;
+  LIGHTBULB_STYPE: string;
+  SWITCH_STYPE: string;
+  THERMOSTAT_STYPE: string;
+  GARAGE_DOOR_OPENER_STYPE: string;
+  ACCESSORY_INFORMATION_STYPE: string;
+  FAN_STYPE: string;
+  OUTLET_STYPE: string;
+  LOCK_MECHANISM_STYPE: string;
+  LOCK_MANAGEMENT_STYPE: string;
+  ALARM_STYPE: string;
+  WINDOW_COVERING_STYPE: string;
+  OCCUPANCY_SENSOR_STYPE: string;
+  CONTACT_SENSOR_STYPE: string;
+  MOTION_SENSOR_STYPE: string;
+  HUMIDITY_SENSOR_STYPE: string;
+  TEMPERATURE_SENSOR_STYPE: string;
+  ALARM_CURRENT_STATE_CTYPE: string;
+  ALARM_TARGET_STATE_CTYPE: string;
+  ADMIN_ONLY_ACCESS_CTYPE: string;
+  AUDIO_FEEDBACK_CTYPE: string;
+  BRIGHTNESS_CTYPE: string;
+  BATTERY_LEVEL_CTYPE: string;
+  COOLING_THRESHOLD_CTYPE: string;
+  CONTACT_SENSOR_STATE_CTYPE: string;
+  CURRENT_DOOR_STATE_CTYPE: string;
+  CURRENT_LOCK_MECHANISM_STATE_CTYPE: string;
+  CURRENT_RELATIVE_HUMIDITY_CTYPE: string;
+  CURRENT_TEMPERATURE_CTYPE: string;
+  HEATING_THRESHOLD_CTYPE: string;
+  HUE_CTYPE: string;
+  IDENTIFY_CTYPE: string;
+  LOCK_MANAGEMENT_AUTO_SECURE_TIMEOUT_CTYPE: string;
+  LOCK_MANAGEMENT_CONTROL_POINT_CTYPE: string;
+  LOCK_MECHANISM_LAST_KNOWN_ACTION_CTYPE: string;
+  LOGS_CTYPE: string;
+  MANUFACTURER_CTYPE: string;
+  MODEL_CTYPE: string;
+  MOTION_DETECTED_CTYPE: string;
+  NAME_CTYPE: string;
+  OBSTRUCTION_DETECTED_CTYPE: string;
+  OUTLET_IN_USE_CTYPE: string;
+  OCCUPANCY_DETECTED_CTYPE: string;
+  POWER_STATE_CTYPE: string;
+  PROGRAMMABLE_SWITCH_SWITCH_EVENT_CTYPE: string;
+  PROGRAMMABLE_SWITCH_OUTPUT_STATE_CTYPE: string;
+  ROTATION_DIRECTION_CTYPE: string;
+  ROTATION_SPEED_CTYPE: string;
+  SATURATION_CTYPE: string;
+  SERIAL_NUMBER_CTYPE: string;
+  STATUS_LOW_BATTERY_CTYPE: string;
+  STATUS_FAULT_CTYPE: string;
+  TARGET_DOORSTATE_CTYPE: string;
+  TARGET_LOCK_MECHANISM_STATE_CTYPE: string;
+  TARGET_RELATIVE_HUMIDITY_CTYPE: string;
+  TARGET_TEMPERATURE_CTYPE: string;
+  TEMPERATURE_UNITS_CTYPE: string;
+  VERSION_CTYPE: string;
+  WINDOW_COVERING_TARGET_POSITION_CTYPE: string;
+  WINDOW_COVERING_CURRENT_POSITION_CTYPE: string;
+  WINDOW_COVERING_OPERATION_STATE_CTYPE: string;
+  CURRENTHEATINGCOOLING_CTYPE: string;
+  TARGETHEATINGCOOLING_CTYPE: string;
+}
+
+export interface Hap {
+  uuid: HAPNodeJS.uuid;
+  AccessoryLoader: Accessories;
+  Characteristic: HAPNodeJS.Characteristic;
+  Service: HAPNodeJS.Service;
+}
+
+export interface Accessories {
+}
+
+export interface Accessory {
+  displayName: string;
+}
+
+export interface User {
+  config: () => any;
+  storagePath: () => string;
+  configPath: () => string;
+  persistPath: () => string;
+  cachedAccessoryPath: () => string;
+  setStoragePath: (storagePath: string) => void;
+}
\ No newline at end of file
diff --git a/src/models/HomebridgeAccessory.ts b/src/models/HomebridgeAccessory.ts
new file mode 100644
index 0000000..f0f66cb
--- /dev/null
+++ b/src/models/HomebridgeAccessory.ts
@@ -0,0 +1,5 @@
+
+
+export interface HomebridgeAccessory {
+  getServices: () => HAPNodeJS.Service[];
+}
\ No newline at end of file
diff --git a/src/models/Logger.ts b/src/models/Logger.ts
new file mode 100644
index 0000000..45e89a4
--- /dev/null
+++ b/src/models/Logger.ts
@@ -0,0 +1,8 @@
+
+
+export interface Logger {
+  debug: (msg: any) => void;
+  info: (msg: any) => void;
+  warn: (msg: any) => void;
+  error: (msg: any) => void;
+}
\ No newline at end of file
diff --git a/src/models/Presence.ts b/src/models/Presence.ts
new file mode 100644
index 0000000..b163cbd
--- /dev/null
+++ b/src/models/Presence.ts
@@ -0,0 +1,7 @@
+import { Availability } from ".";
+
+export interface Presence {
+  id: string;
+  availability: Availability;
+  activity: string;
+}
\ No newline at end of file
diff --git a/src/models/PresenceConfig.ts b/src/models/PresenceConfig.ts
new file mode 100644
index 0000000..05503d3
--- /dev/null
+++ b/src/models/PresenceConfig.ts
@@ -0,0 +1,17 @@
+import { StatusColors } from ".";
+
+export interface PresenceConfig {
+  name: string;
+  accessory: string;
+  appId: string;
+  interval: number;
+  setColorApi: string;
+  offApi: string;
+  onApi: string;
+  startTime: string;
+  endTime: string;
+  lightType: string;
+  statusColors: StatusColors;
+  weekend: boolean;
+  debug: boolean;
+}
\ No newline at end of file
diff --git a/src/models/StatusColors.ts b/src/models/StatusColors.ts
new file mode 100644
index 0000000..7d1a62c
--- /dev/null
+++ b/src/models/StatusColors.ts
@@ -0,0 +1,12 @@
+
+export interface StatusColors {
+  available: RGB;
+  away: RGB;
+  busy: RGB;  
+}
+
+export interface RGB {
+  red: number;
+  green: number;
+  blue: number;
+}
\ No newline at end of file
diff --git a/src/models/index.ts b/src/models/index.ts
new file mode 100644
index 0000000..bd3ae14
--- /dev/null
+++ b/src/models/index.ts
@@ -0,0 +1,8 @@
+export * from './AccessToken';
+export * from './Availability';
+export * from './Homebridge';
+export * from './HomebridgeAccessory';
+export * from './Logger';
+export * from './Presence';
+export * from './PresenceConfig';
+export * from './StatusColors';
diff --git a/src/services/busyLightService.ts b/src/services/busyLightService.ts
new file mode 100644
index 0000000..586eebe
--- /dev/null
+++ b/src/services/busyLightService.ts
@@ -0,0 +1,50 @@
+import { Logger } from "../models";
+import fetch from 'node-fetch';
+
+
+export class BusyLightService {
+
+  /**
+   * Do a get request to the busy light
+   * 
+   * @param url 
+   */
+  public static async get(url: string, log: Logger, debug: boolean = false) {
+    try {
+      if (debug) {
+        log.info(`Calling the busy light API: ${url}`);
+      }
+      const data = await fetch(url);
+      if (debug) {
+        log.info(`Call was: ${data.ok}`);
+      }
+    } catch (error) {
+      log.warn(`Seems to be the busy light API was offline`);
+    }
+  }
+
+  /**
+   * Do a post request to the busy light
+   * 
+   * @param url 
+   */
+  public static async post(url: string, body: any, log: Logger, debug: boolean = false) {
+    try {
+      if (debug) {
+        log.info(`Calling the busy light API: ${url} - ${JSON.stringify(body)}`);
+      }
+      const data = await fetch(url, { 
+        method: "POST", 
+        headers: {
+          "Content-Type": "application/json" 
+        },
+        body: JSON.stringify(body)
+      });
+      if (debug) {
+        log.info(`Call was: ${data.ok}`);
+      }
+    } catch (error) {
+      log.warn(`Seems to be the busy light API was offline`);
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/services/index.ts b/src/services/index.ts
new file mode 100644
index 0000000..0b99f00
--- /dev/null
+++ b/src/services/index.ts
@@ -0,0 +1,2 @@
+export * from './busyLightService';
+export * from './msGraphService';
diff --git a/src/services/msGraphService.ts b/src/services/msGraphService.ts
new file mode 100644
index 0000000..4d106e3
--- /dev/null
+++ b/src/services/msGraphService.ts
@@ -0,0 +1,32 @@
+import fetch from 'node-fetch';
+import { Logger } from '../models';
+
+export class MsGraphService {
+  
+  /**
+   * Perform a get request against the MS Graph
+   * 
+   * @param url 
+   * @param accessToken 
+   */
+  public static async get(url: string, accessToken: string, log: Logger, debug: boolean = false) {
+    if (debug) {
+      log.info(`Calling the MS Graph.`);
+    }
+
+    const response = await fetch(url, {
+      headers: {
+        Authorization: `Bearer ${accessToken}`,
+        'Content-Type': `application/json`,
+        'Accept': `application/json`
+      }
+    });
+
+    const data = await response.json();
+    if (debug) {
+      log.info(`MS Graph response: ${JSON.stringify(data)}`);
+    }
+    
+    return data;
+  }
+}
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..189ac02
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "target": "es2017",
+    "forceConsistentCasingInFileNames": true,
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+    "declaration": true,
+    "sourceMap": true,
+    "skipLibCheck": true,
+    "outDir": "dist",
+    "typeRoots": [
+      "./node_modules/@types"
+    ],
+    "lib": ["es2017"]
+  },
+  "exclude": [
+    "node_modules",
+    "dist"
+  ],
+  "include": [
+    "src/**/*.ts",
+  ]
+}