'use strict';

var PromiseA = require('bluebird');
var resolveTxtAsync = PromiseA.promisify(require('dns').resolveTxt);
var Challenge = require('./');
var leChallengeDns = Challenge.create({ });
var opts = leChallengeDns.getOptions();
var domain = 'test.example.com';
var challenge = 'xxx-acme-challenge-xxx';
var keyAuthorization = 'xxx-acme-challenge-xxx.xxx-acme-authorization-xxx';

Challenge.loopback = function (defaults, domain, challenge, done) {
  var challengeDomain = (defaults.test || '') + defaults.acmeChallengeDns + domain;
  console.log("dig TXT +noall +answer @8.8.8.8 '" + challengeDomain + "' # " + challenge);
  resolveTxtAsync(challengeDomain).then(function (x) { done(null, x); }, done);
};

Challenge.test = function (args, domain, challenge, keyAuthorization, done) {
  var me = this;

  args.test = args.test || '_test.';
  //defaults.test = args.test;

  me.set(args, domain, challenge, keyAuthorization || challenge, function (err, k) {
    if (err) { done(err); return; }

    me.loopback(/*defaults*/args, domain, challenge, function (err, arr) {
      if (err) { done(err); return; }

      if (!arr.some(function (a) {
        return a.some(function (keyAuthDigest) {
          return keyAuthDigest === k;
        });
      })) {
        err = new Error("txt record '" + challenge + "' doesn't match '" + k + "'");
      }

      me.remove(/*defaults*/args, domain, challenge, function (_err) {
        if (_err) { done(_err); return; }

        // TODO needs to use native-dns so that specific nameservers can be used
        // (otherwise the cache will still have the old answer)
        done(err || null);
        /*
        me.loopback(defaults, domain, challenge, function (err) {
          if (err) { done(err); return; }

          done();
        });
        */
      });
    });
  });
};

setTimeout(function () {
  leChallengeDns.test(opts, domain, challenge, keyAuthorization, function (err) {
    // if there's an error, there's a problem
    if (err) { throw err; }

    console.log('test passed');
  });
}, 300);