server.js

const express = require("express");
const app = express();
const fetch = require("node-fetch");
const path = require("path");
require("dotenv").config();

const symblAppId = process.env.SYMBL_APP_ID;
const symblAppSecret = process.env.SYMBL_APP_SECRET;
const symblApiBasePath =
    process.env.SYMBL_API_BASE_PATH || "https://api.symbl.ai";
const agoraAppId = process.env.REACT_APP_AGORA_APP_ID;

// const MAX_ALLOWED_SESSION_DURATION = 14400;

// app.use(express.static(path.join(__dirname, "build")));

app.use((req, res, next) => {
    res.header("Access-Control-Allow-Origin", "*");
    res.header(
        "Access-Control-Allow-Headers",
        "Origin, X-Requested-With, Content-Type, Accept, X-API-KEY"
    );
    next();
});

app.get("/symbl-token", async (req, res) => {
    try {
        const response = await fetch(
            `${symblApiBasePath}/oauth2/token:generate`,
            {
                method: "POST",
                mode: "cors",
                cache: "no-cache",
                credentials: "same-origin",
                headers: {
                    "Content-Type": "application/json"
                },
                redirect: "follow",
                referrerPolicy: "no-referrer",
                body: JSON.stringify({
                    type: "application",
                    appId: symblAppId,
                    appSecret: symblAppSecret
                })
            }
        );
        res.setHeader("Content-Type", "application/json");
        res.json(await response.json()).end();
    } catch (e) {
        console.error("Error while issuing Symbl Token.", e);
        res.status(401)
            .json({
                message: e.toString()
            })
            .end();
    }
});

app.listen(8081, () => console.log("Agora token server running on 8081"));