#11: Configures firebase and creates routes

.gitignore

@@ -1,5 +1,7 @@
 # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 
+firebaseConfig.json
+
 # dependencies
 /node_modules
 /.pnp

config/firebase.ts

@@ -0,0 +1,15 @@
+import * as admin from "firebase-admin";
+import * as firebaseConfig from "../firebaseConfig.json";
+
+if (!admin.apps.length) {
+  try {
+    admin.initializeApp({
+      credential: admin.credential.cert(firebaseConfig as admin.ServiceAccount),
+      databaseURL: process.env.NEXT_PUBLIC_FIREBASE_DATABASE_URL,
+    });
+  } catch (error) {
+    console.log("Firebase admin initialization error", error?.stack);
+  }
+}
+
+export default admin;

models/ICoordinatesData.ts

@@ -0,0 +1,9 @@
+export interface ICoordinatesData {
+  date?: string;
+  time?: string;
+  id?: string;
+  line?: string;
+  latitude?: string;
+  longitude?: string;
+  speed?: string;
+}

models/ISession.ts

@@ -0,0 +1,6 @@
+import { ICoordinatesData } from "./ICoordinatesData";
+
+export interface ISession {
+  id: string;
+  coordinates: ICoordinatesData[];
+}

package.json

@@ -15,6 +15,7 @@
     "@types/node": "^17.0.32",
     "@types/react": "^18.0.9",
     "@types/react-dom": "^18.0.3",
+    "firebase-admin": "^10.2.0",
     "next": "^12.1.6",
     "papaparse": "^5.3.2",
     "react": "^18.1.0",

pages/api/session/[sessionId].ts

@@ -0,0 +1,39 @@
+import { NextApiRequest, NextApiResponse } from "next";
+import admin from "../../../config/firebase";
+import { ICoordinatesData } from "../../../models/ICoordinatesData";
+
+export default async (req: NextApiRequest, res: NextApiResponse) => {
+  const db = admin.firestore();
+  const { method, query, body } = req;
+
+  try {
+    if (method == "PUT") {
+      const { sessionId } = query;
+      const docRef = db.doc(`sessions/${sessionId}`);
+
+      try {
+        await db.runTransaction(async (transaction) => {
+          const snapshot = await transaction.get(docRef);
+          const coordinates = docRef.collection("coordinates");
+          const coordinatesData = body as ICoordinatesData;
+          const coordinatesRef = coordinates.doc(
+            `${coordinatesData.date}T${coordinatesData.time}`
+          );
+          await transaction.create(coordinatesRef, coordinatesData);
+        });
+        res.status(200).json({ id: docRef.id });
+      } catch (err) {
+        console.error(
+          `Error while adding coordinate to session ${sessionId}.`,
+          err
+        );
+        res.status(500).json({ statusCode: 500, message: err.message });
+      }
+    } else {
+      res.setHeader("Allow", ["PUT"]);
+      res.status(405).end(`Method ${method} Not Allowed`);
+    }
+  } catch (err: any) {
+    res.status(500).json({ statusCode: 500, message: err.message });
+  }
+};

pages/api/session/index.ts

@@ -0,0 +1,20 @@
+import { NextApiRequest, NextApiResponse } from "next";
+import admin from "../../../config/firebase";
+
+export default async (req: NextApiRequest, res: NextApiResponse) => {
+  const db = admin.firestore();
+  const { method } = req;
+
+  try {
+    if (method == "POST") {
+      const id = new Date().valueOf().toString();
+      await db.doc(`sessions/${id}`).create({});
+      res.status(200).json({ id });
+    } else {
+      res.setHeader("Allow", ["POST"]);
+      res.status(405).end(`Method ${method} Not Allowed`);
+    }
+  } catch (err: any) {
+    res.status(500).json({ statusCode: 500, message: err.message });
+  }
+};