makeAlice.js

// Copyright (C) 2013 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


"use strict";

var Q = require("q");
var escrowExchange = require("./escrowExchange");
var cajaVM = require("./cajaVM");

var def = cajaVM.def;

var makeAlice = function(myMoneyPurse, myStockPurse, contractHostP) {
  var escrowSrc = ''+escrowExchange;
  var myPurse = myMoneyPurse;

  var check = function(allegedSrc, allegedSide) {
    // for testing purposes, alice and bob are willing to play
    // any side of any contract, so that the failure we're testing
    // is in the contractHost's checking
  };

  var alice = def({
    payBobWell: function(bobP) {
      var paymentP = Q(myMoneyPurse).send('makePurse');
      var ackP = Q(paymentP).send('deposit', 10, myPurse);
      return ackP.then(
        function(_) { return bobP.send('buy', 'shoe', paymentP); });
    },
    payBobBadly1: function(bobP) {
      var payment = def({ deposit: function(amount, src) {} });
      return bobP.send('buy', 'shoe', payment);
    },
    payBobBadly2: function(bobP) {
      var paymentP = Q(myMoneyPurse).send('makePurse');
      var ackP = Q(paymentP).send('deposit', 5, myPurse);
      return ackP.then(
        function(_) { return bobP.send('buy', 'shoe', paymentP); });
    },


    tradeWell: function(bobP) {
      var tokensP = Q(contractHostP).send('setup', escrowSrc);
      var aliceTokenP = Q(tokensP).get(0);
      var bobTokenP   = Q(tokensP).get(1);
             Q(bobP ).send('invite', bobTokenP,   escrowSrc, 1);
      return Q(alice).send('invite', aliceTokenP, escrowSrc, 0);
    },

    invite: function(tokenP, allegedSrc, allegedSide) {
      check(allegedSrc, allegedSide);

      var cancel;
      var a = Q.passByCopy({
        moneySrcP: Q(myMoneyPurse).send('makePurse'),
        stockDstP: Q(myStockPurse).send('makePurse'),
        stockNeeded: 7,
        cancellationP: Q.promise(function(r) { cancel = r; })
      });
      var ackP = Q(a.moneySrcP).send('deposit', 10, myMoneyPurse);

      var decisionP = Q(ackP).then(
        function(_) {
          return Q(contractHostP).send(
            'play', tokenP, allegedSrc, allegedSide, a);
        });
      return Q(decisionP).then(function(_) {
        return Q.delay(3000);
      }).then(function(_) {
        return Q(a.stockDstP).send('getBalance');
      });
    }
  });
  return alice;
};
module.exports = makeAlice;