'use strict';

var Challenge = module.exports;

Challenge.create = function (defaults) {
  return {
    getOptions: function () {
      return defaults || {};
    }
  , set: Challenge.set
  , get: Challenge.get
  , remove: Challenge.remove
  , loopback: Challenge.loopback
  , test: Challenge.test
  };
};

// Show the user the token and key and wait for them to be ready to continue
Challenge.set = function (args, domain, challenge, keyAuthorization, cb) {
  var keyAuthDigest = require('crypto').createHash('sha256').update(keyAuthorization||'').digest('base64')
    .replace(/\+/g, '-')
    .replace(/\//g, '_')
    .replace(/=+$/g, '')
    ;
  var challengeDomain = domain;

  if (this.leDnsResponse) {
      this.leDnsResponse(challenge, keyAuthorization, keyAuthDigest, challengeDomain, domain)
      .then(function (/*successMessage*/) {
          cb(null);
      });
  } else {
    console.info("");
    console.info("Challenge for '" + domain + "'");
    console.info("");
    console.info("We now present (for you copy-and-paste pleasure) your ACME Challenge");
    console.info("public Challenge and secret KeyAuthorization and Digest, in that order, respectively:");
    console.info(challenge);
    console.info(keyAuthorization);
    console.info(keyAuthDigest);
    console.info("");
    console.info(challengeDomain + "\tTXT " + keyAuthDigest + "\tTTL 60");
    console.info("");
    console.info(JSON.stringify({
      domain: domain
    , challenge: challenge
    , keyAuthorization: keyAuthorization
    , keyAuthDigest: keyAuthDigest
    }, null, '  ').replace(/^/gm, '\t'));
    console.info("");
    console.info("hit enter to continue...");
    process.stdin.resume();
    process.stdin.on('data', function () {
      process.stdin.pause();
      cb(null);
    });
  }
};

// nothing to do here, that's why it's manual
Challenge.get = function (defaults, domain, challenge, cb) {
  cb(null);
};

// might as well tell the user that whatever they were setting up has been checked
Challenge.remove = function (args, domain, challenge, cb) {
    console.info("Challenge for '" + domain + "' complete. You may remove it.");
    cb(null);
  //});
};