#!/bin/env node

//
// Simple example of a custom out of band strategy (aka one that is missing a response).
// Could be improved with some sort of session storage outside of the req/res
//
// Passing can be achieved by passing in --auth user:pass
//
var passport = require('passport')
  , optimist = require('optimist')
  , request = require('request')
  , Strategy = passport.Strategy;

//
// Simple example strategy
//
var basicStrategy = new Strategy();
basicStrategy.name = 'custom';
basicStrategy.authenticate = function (req) {
  if (req.headers.authorization === 'Basic ' + new Buffer('user:pass').toString('base64')) {
    this.pass();
    return
  }
  this.fail();
}

passport.use(basicStrategy);

var pass = passport.authenticate('custom')

//
// Shim to override the res result
//
function auth(req, callback) {

  var intercept = {
    end: function (body) {
      callback({status: this.status, body: body});
    }
  };

  pass(req, intercept, function (req, res) {
    callback();
  });
}

//
// Faked request
//
var req = {
  headers: {
    authorization:'Basic ' + new Buffer(optimist.argv.auth).toString('base64')
  }
}

//
// Use the callback to determine if this was a valid auth
//
auth(req, function (err) {
  if (err) {
    console.error('failed')
  }
  else {
    console.error('passed')
  }
})