Update to be single source of truth for teasense alerting

package.json

@@ -12,14 +12,13 @@
   "license": "ISC",
   "devDependencies": {
     "@types/axios": "^0.14.0",
+    "@types/node": "^20.12.5",
     "typescript": "^5.0.4"
   },
   "dependencies": {
-    "axios": "^1.4.0",
     "date-fns": "^2.30.0",
     "dotenv": "^16.1.3",
-    "firebase": "^9.22.1",
-    "firebase-admin": "^11.9.0",
-    "matrix-js-sdk": "^31.6.1"
+    "matrix-js-sdk": "^31.6.1",
+    "node-fetch": "^3.3.2"
   }
 }

src/index.ts

@@ -2,24 +2,9 @@ import 'dotenv/config'
 
 import * as sdk from "matrix-js-sdk";
 import axios from 'axios';
+import fetch from 'node-fetch';
 import { isBefore } from 'date-fns';
 
-// TODO: Add SDKs for Firebase products that you want to use
-// https://firebase.google.com/docs/web/setup#available-libraries
-
-// Your web app's Firebase configuration
-// For Firebase JS SDK v7.20.0 and later, measurementId is optional
-const firebaseConfig = {
-  apiKey: process.env.apiKey,
-  authDomain: process.env.authDomain,
-  databaseURL: process.env.databaseURL,
-  projectId: process.env.projectId,
-  storageBucket: process.env.storageBucket,
-  messagingSenderId: process.env.messagingSenderId,
-  appId: process.env.appId,
-  measurementId: process.env.measurementId,
-};
-
 let hasAlerted = false;
 
 export type DataPoint = {
@@ -31,26 +16,21 @@ export type DataPoint = {
 
 let tempValue = 0.;
 
+type TeaSenseResult = {
+  temperature: number;
+};
+
 async function pullTempFromBackend() {
   try {
     hasAlerted = false;
-    const response = await axios.get(
-      process.env.TEASENSE_URL ?? ''
-    );
-    const result = response.data.reduce(
-      (accum: DataPoint, datum: DataPoint) =>
-        (accum &&
-          isBefore(
-            new Date(accum?.timestamp),
-            new Date(datum?.timestamp),
-          )) ||
-          !accum
-          ? datum
-          : accum,
-      null,
+    const response = await fetch(
+      process.env.TEASENSE_URL ?? '', {
+        signal: AbortSignal.timeout(5000),
+      }
     );
+    const result = await response.json() as TeaSenseResult;
 
-    if (result?.value && result?.value >= parseInt(process.env.TEASENSE_TEMP ?? '100.0')) {
+    if (result?.temperature && result?.temperature >= parseInt(process.env.TEASENSE_TEMP ?? '100.0')) {
       try {
         const content = {
           body: '♨️',