add register function in new folder structure

cloud-functions/nodejs/firebase.json

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+{
+  "functions": [
+    {
+      "source": "functions",
+      "codebase": "default",
+      "ignore": [
+        "node_modules",
+        ".git",
+        "firebase-debug.log",
+        "firebase-debug.*.log"
+      ]
+    }
+  ]
+}

cloud-functions/nodejs/functions/package.json

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+{
+  "name": "functions",
+  "description": "Cloud Functions for Firebase",
+  "scripts": {
+    "serve": "firebase emulators:start --only functions",
+    "shell": "firebase functions:shell",
+    "start": "npm run shell",
+    "deploy": "firebase deploy --only functions",
+    "logs": "firebase functions:log"
+  },
+  "engines": {
+    "node": "18"
+  },
+  "main": "index.js",
+  "dependencies": {
+    "csv-parser": "^3.0.0",
+    "firebase-admin": "^11.8.0",
+    "firebase-functions": "^4.3.1",
+    "html-pdf-node": "^1.0.8",
+    "moment": "^2.29.4",
+    "axios": "1.6.2"
+  },
+  "devDependencies": {
+    "firebase-functions-test": "^3.1.0"
+  },
+  "private": true
+}

cloud-functions/nodejs/functions/registerUser/.gcloudignore

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+# This file specifies files that are *not* uploaded to Google Cloud
+# using gcloud. It follows the same syntax as .gitignore, with the addition of
+# "#!include" directives (which insert the entries of the given .gitignore-style
+# file at that point).
+#
+# For more information, run:
+#   $ gcloud topic gcloudignore
+#
+.gcloudignore
+# If you would like to upload your .git directory, .gitignore file or files
+# from your .gitignore file, remove the corresponding line
+# below:
+.git
+.gitignore
+
+node_modules

cloud-functions/nodejs/functions/registerUser/index.js

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+const { onRequest } = require("firebase-functions/v2/https");
+const logger = require("firebase-functions/logger");
+const functions = require("firebase-functions");
+const admin = require("firebase-admin");
+const moment = require('moment');
+const fs = require('fs');
+const csv = require('csv-parser');
+const html_to_pdf = require('html-pdf-node');
+
+admin.initializeApp();
+
+exports.registerUser = functions.region("asia-south1").https.onRequest(async (req, res) => {
+    res.set('Access-Control-Allow-Origin', "*")
+    res.set('Access-Control-Allow-Methods', 'GET, POST');
+
+    if (req.method === "OPTIONS") {
+        // stop preflight requests here
+        res.set("Access-Control-Allow-Headers", "Content-Type, x-client");
+        res.status(204).send('');
+        return;
+    }
+
+    try {
+        const token = "e16a1bd15af2ee640f5a7a18c8d8333f5f01f7c66e003bbc21ee52870f1bce27";
+        logger.info(`User-Agent ${req.get("User-Agent")}`);
+        logger.info(`token ${req.get("x-client")}`);
+        if (req.get("x-client") !== token) {
+            res.json({ status: "403", message: "auth error", result: "true" });
+        }
+        else {
+            const { body } = req;
+            const { _id } = body;
+            logger.info(`_id ${_id}`);
+            await admin
+                .firestore()
+                .collection("patientData")
+                .add(Object.assign(Object.assign({}, body), { createdAt: moment().utcOffset("+05:30").format("YYYY-MM-DD HH:mm:ss") }))
+            res.json({ status: "200" });
+        }
+    }
+    catch (err) {
+        logger.info(`error ${err}`);
+        res.json({ status: "400", message: "some error.", result: "true" });
+    }
+});

cloud-functions/nodejs/functions/registerUser/package.json

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+{
+  "name": "functions",
+  "description": "Cloud Functions for Firebase",
+  "scripts": {
+    "serve": "firebase emulators:start --only functions",
+    "shell": "firebase functions:shell",
+    "start": "npm run shell",
+    "deploy": "firebase deploy --only functions",
+    "logs": "firebase functions:log"
+  },
+  "engines": {
+    "node": "18"
+  },
+  "main": "index.js",
+  "dependencies": {
+    "csv-parser": "^3.0.0",
+    "firebase-admin": "^11.8.0",
+    "firebase-functions": "^4.7.0",
+    "html-pdf-node": "^1.0.8",
+    "moment": "^2.29.4"
+  },
+  "devDependencies": {
+    "firebase-functions-test": "^3.1.0"
+  },
+  "private": true
+}

cloud-functions/python/firebase.json

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+{
+  "functions": [
+    {
+      "source": "functions",
+      "codebase": "default",
+      "ignore": [
+        "venv",
+        ".git",
+        "firebase-debug.log",
+        "firebase-debug.*.log"
+      ]
+    }
+  ]
+}