A simple Deno HTTP server.

server.ts

import {
  listenAndServe,
  ServerRequest,
} from "https://deno.land/std/http/server.ts";

const { PORT = "8080" } = Deno.env.toObject();

const spuds: Array<string> = [];

const createSpud = async (req: ServerRequest) => {
  const decoder = new TextDecoder();
  const bodyContents = await Deno.readAll(req.body);
  const body = JSON.parse(decoder.decode(bodyContents));

  spuds.push(body.type);

  req.respond({
    status: 201,
  });
};

const getSpuds = (req: ServerRequest) => {
  const encoder = new TextEncoder();
  const body = encoder.encode(JSON.stringify({ spuds }));

  req.respond({
    body,
    headers: new Headers({
      "content-type": "application/json",
    }),
    status: 200,
  });
};

const handleRoutes = (req: ServerRequest) => {
  if (req.url === "/spuds") {
    switch (req.method) {
      case "POST":
        createSpud(req);
        return;
      case "GET":
        getSpuds(req);
        return;
    }
  }

  req.respond({ status: 404 });
};

listenAndServe({ port: parseInt(PORT, 10) }, async (req: ServerRequest) => {
  try {
    handleRoutes(req);
  } catch (error) {
    console.log(error);
    req.respond({ status: 500 });
  }
});

console.log(`Listening on port ${PORT}.`);