// Loosely based on server.js from https://issues.chromium.org/issues/40941179 by R0ng

var http = require('http');
var fs = require('fs');
function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

var configJson = `{
  "accounts_endpoint": "/accounts.json",
  "client_metadata_endpoint": "/metadata.json",
  "id_assertion_endpoint": "/tokens.json",
  "revocation_endpoint": "/revocation.html",
  "login_url": "/login.html"
}`;

var transparent = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=';

var realisticAccount = `{
  "accounts" : [
    { 
        "id": "aotest1234",
        "email": "alesandro@alesandroortiz.com", 
        "name":"Alesandro Ortiz",
        "given_name": "Alesandro",
        "picture": "https://alesandroortiz.com/img/logo-social.png"
    }
  ]
}`;

const defaultHeaders = {
    'Content-Type': 'application/json',
    'Set-Login': 'logged-in'
}

var handler = (port) => {
    return async (req, res) => {
        var url = req.url;
        console.info('Requested URL', req.url);
        if (url == "/.well-known/web-identity") {
            res.writeHead(200, defaultHeaders);
            res.end('{"provider_urls": ["http://localhost:'+port+'/config.json"]}');
        } else if (url == "/config.json") {
            res.writeHead(200, defaultHeaders);
            res.end(configJson);
        } else if (url == "/accounts.json") {
            res.writeHead(200, defaultHeaders);
            res.end(realisticAccount);
        } else if (url == "/tokens.json") {
            res.writeHead(200, {
                ...defaultHeaders,
                'Access-Control-Allow-Credentials': 'true',
                'Access-Control-Allow-Origin': req.headers.origin
            });
            res.end('{"token" : "123456789"}');
        } else if (url == '/metadata.json') {
            res.writeHead(200, defaultHeaders);
        } else {
            res.writeHead(200, {'Content-Type': 'text/html'});
            res.end('<script>navigator.login.setStatus("logged-in"); document.write("Set login state");</script>');
        }
    }
}

var createServer = (port) => {
    http.createServer(handler(port)).listen(port, "127.0.0.1");
}

createServer(8088);

console.log('Server running');