From a8c5b1b9e6d39041f66b1fb884b18a1f76e6db50 Mon Sep 17 00:00:00 2001
From: Serge Wagener <serge@wagener.family>
Date: Wed, 9 Feb 2022 20:21:42 +0100
Subject: [PATCH] Added ContactSensor

---
 src/Accessories/ContactSensor.ts | 66 ++++++++++++++++++++++++++++++++
 src/platform.ts                  |  6 +++
 2 files changed, 72 insertions(+)
 create mode 100644 src/Accessories/ContactSensor.ts

diff --git a/src/Accessories/ContactSensor.ts b/src/Accessories/ContactSensor.ts
new file mode 100644
index 0000000..71ab1c8
--- /dev/null
+++ b/src/Accessories/ContactSensor.ts
@@ -0,0 +1,66 @@
+import {
+    AccessoryPlugin,
+    CharacteristicValue,
+    Service,
+    Nullable,
+} from 'homebridge';
+
+import { SmartHomeNGPlatform } from '../platform';
+
+export class ContactSensor implements AccessoryPlugin {
+    private readonly deviceService: Service;
+    private readonly informationService: Service;
+
+    public name: string;
+    private contactState = this.platform.Characteristic.ContactSensorState.CONTACT_NOT_DETECTED;
+
+    constructor(private readonly platform: SmartHomeNGPlatform, private readonly accessory) {
+        this.name = accessory.name;
+        this.deviceService = new this.platform.Service.ContactSensor(accessory.name);
+
+        // create handlers for required characteristics
+        this.deviceService.getCharacteristic(this.platform.Characteristic.MotionDetected)
+            .onGet(this.handleContactSensorStateGet.bind(this));
+
+        this.informationService =
+            new this.platform.Service.AccessoryInformation()
+                .setCharacteristic(this.platform.Characteristic.Manufacturer, accessory.manufacturer)
+                .setCharacteristic(this.platform.Characteristic.Model, accessory.model)
+                .setCharacteristic(this.platform.Characteristic.SerialNumber, accessory.contactstate);
+
+        this.platform.shng.addMonitor(accessory.contactstate, this.shngCallback.bind(this));
+        this.platform.log.info('ContactSensor', accessory.name, 'created!');
+    }
+
+    identify(): void {
+        this.platform.log.info('Identify!');
+    }
+
+    getServices(): Service[] {
+        return [this.informationService, this.deviceService];
+    }
+
+    handleContactSensorStateGet(): Nullable<CharacteristicValue> {
+        this.platform.log.debug(
+            'handleContactSensorStateGet:',
+            this.accessory.name, '=',
+            this.contactState === this.platform.Characteristic.ContactSensorState.CONTACT_DETECTED ? 'True' : 'False',
+        );
+        return this.contactState;
+    }
+
+    shngCallback(value: unknown): void {
+        this.platform.log.debug('shngCallback:', this.accessory.name, '=', value, '(' + typeof value + ')');
+        if (typeof value === 'boolean') {
+            if (value) {
+                this.contactState = this.platform.Characteristic.ContactSensorState.CONTACT_DETECTED;
+            } else {
+                this.contactState = this.platform.Characteristic.ContactSensorState.CONTACT_NOT_DETECTED;
+            }
+        } else {
+            this.platform.log.warn('Unknown type', typeof value, 'received for', this.accessory.name + ':', value);
+        }
+        this.deviceService.updateCharacteristic(this.platform.Characteristic.ContactSensorState, this.contactState);
+    }
+}
+
diff --git a/src/platform.ts b/src/platform.ts
index 7f0c48e..ce8721a 100644
--- a/src/platform.ts
+++ b/src/platform.ts
@@ -18,6 +18,7 @@ import { Lightbulb } from './Accessories/Lightbulb';
 import { TemperatureSensor } from './Accessories/TemperatureSensor';
 import { Thermostat } from './Accessories/Thermostat';
 import { WindowCovering } from './Accessories/WindowCovering';
+import { ContactSensor } from './Accessories/ContactSensor';
 
 function uncapitalizeKeys(obj): Record<string, unknown> {
     function isObject(o: unknown): boolean {
@@ -89,6 +90,11 @@ export class SmartHomeNGPlatform implements StaticPlatformPlugin {
                         devices.push(new MotionSensor(this, accessory));
                         break;
 
+                    // Contact sensor
+                    case 'contactsensor':
+                        devices.push(new ContactSensor(this, accessory));
+                        break;
+
                     // Switch
                     case 'switch':
                         devices.push(new Switch(this, accessory));