Custom backend (JWT)

import 'dart:convert';
import 'package:http/http.dart' as http;

Future<User> getOrCreateUser() async {
  final accessToken = await Fluo.instance.getAccessToken();
  final response = await http.post(
    Uri.parse('https://your-backend.com/api/user/me'),
    headers: {
      'authorization': 'Bearer $accessToken',
    },
    body: jsonEncode(Fluo.instance.session.user),
  );
  return User.fromJson(jsonDecode(response.body));
}

const jwt = require("jsonwebtoken")
const SECRET_KEY = "YOUR_SECRET_KEY" // dashboard.fluo.dev/backend

app.post("/api/user/me", async (req, res) => {
  const accessToken = req.headers["authorization"].split(" ")[1]
  const payload = jwt.verify(accessToken, SECRET_KEY)
  const userId = payload.sub

  let user = await User.findOne({ id: userId })
  if (!user) {
    const { email, mobileE164, mobileIso2, firstName, lastName } = req.body
    user = await User.create({
      id: userId,
      email,
      mobileE164,
      mobileIso2,
      firstName,
      lastName,
    })
  }

  return res.status(200).json(user)
})

{
  "sub": "2rztxukf57pnjz9",
  "iat": 1744039599,
  "exp": 1744043199,
  "iss": "fluo.dev"
}