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const http = require('http');
const fs = require('fs');
const path = require('path');
const port = process.env.PORT || 3000;

http.createServer(function (request, response) {
  console.log(`request ${request.url}`)
  const filePath = `.${request.url}`;
  const contentType = 'application/json';
  fs.readFile(filePath, (error, content) => {
    if (error) {
      if (error.code == 'ENOENT') {
        response.writeHead(404, { 'Content-Type': contentType });
        response.end(content, 'utf-8');
      } else {
        response.writeHead(500);
        response.end(`Server error: ${error.code} ..\n`);
        response.end();
      }
    } else {
      response.writeHead(200, { 'Content-Type': contentType });
      response.end(content, 'utf-8');
    }
  })
}).listen(port);

console.log(`Server running at :${port}`);