server.js

// import modules/packages/dependencies
const express = require("express");
const axios = require("axios");
const cors = require("cors");
const path = require("path");
const PORT = process.env.PORT || 8000;
require("dotenv").config();

const app = express();
app.use(express.json());
app.use(express.static(path.join(__dirname, 'public')));
app.use(cors());

app.get("/", async (req, res) => {
  try {
    // get absolute path of index.html
    const root = path.join(__dirname, './index.html');
    console.log(root);
    // serve index.html file
    res.status(200).sendFile(root);
  } catch (error) {
    console.log("***** Error! Something undesired happened: *****\n", error);
    res.status(400).json(error);
  }
});

app.get("/transcription", async (req, res) => {
  try {
    const response = await axios.post(
      // use account token to get a temp user token
      "https://api.assemblyai.com/v2/realtime/token",
      // can set a TTL timer in seconds.
      { expires_in: 3600 },
      // AssemblyAI API Key goes here; saved as environment variable for privacy/security
      { headers: { authorization: process.env.ASSEMBLYAI_API_KEY } }
    );
    // destructure data property from response
    const { data } = response;
    // create new environment variable to store temporary authentication token
    process.env.TEMP_TOKEN = data.token;

    res.json(data);
  } catch (error) {
    console.log("***** Error! Something undesired happened: *****\n", error);
    res.status(400).json(error);
  }
});

app.get("/healthcheck", async (req, res) => {
  try {
    console.log(`${process.env.TEST_VARIABLE}`);
    console.log("Successfully hitting endpoint /healthcheck");
    res.status(200).json("Successfully hitting endpoint /healthcheck");
  } catch (error) {
    console.log("***** Error! Something undesired happened: *****\n", error);
    res.status(400).json(error);
  }
});

// start the web server, listening for connections on the port assigned above
const server = app.listen(PORT, () => {
  console.log(`***** Server is running on port ${PORT} *****`);
});