var should = require('chai').should();
var Txout = require('../lib/txout');
var Stealthkey = require('../lib/expmt/stealthkey');
var StealthTx = require('../lib/expmt/stealthtx');
var Transaction = require('../lib/transaction');
var Varint = require('../lib/varint');

describe('StealthTx', function() {
  
  var txhex = '0100000001c828ccce36eca04f96321ad488528af86c7598e67157c4f8e2f462a9e0e3af5f010000006a47304402204525eef6a56cc57fb184e53efdfdc1086d5265da21480d55c2184536440a64f70220349cdc6c66a8507dde0d172fe64aeb57ae56e014b50315f615086a6b85c5424e012102c0633ddb6bf2a8686e2ba4ce8026c94e1e27ef12e73f8fed6d6d2b97199f9b74ffffffff020000000000000000286a2606deadbeef0365b5a5b0ba059666e907b0b5e07b37fdb162d1399ed829315491fe1f30c87b3f905f0100000000001976a9142042d5e7ef9e82346419fbfe7df5ae52fe4bea3c88ac00000000';
  var txbuf = new Buffer(txhex, 'hex');
  var txidhex = '66da969fff214c329e27062beaf3baf20ed035801559b31f3e868c2de4cdfc5b';
  var tx = Transaction(txbuf);

  it('should make a new StealthTx', function() {
    var stx = new StealthTx();
    should.exist(stx);
    stx = StealthTx();
    should.exist(stx);
  });

  describe('#isForMe', function() {
    
    it('should return false for this known tx and random stealthkey', function() {
      var sk = Stealthkey().fromRandom();
      var stx = StealthTx().set({sk: sk, tx: tx});
      stx.isForMe().should.equal(false);
    });

  });

  describe('#notMine', function() {
    
    it('should return true for this known tx and random stealthkey', function() {
      var sk = Stealthkey().fromRandom();
      var stx = StealthTx().set({sk: sk, tx: tx});
      stx.notMine().should.equal("StealthTx not mine");
    });

  });

  describe('#notStealth', function() {

    it('should know this is a stealth tx', function() {
      var stx = StealthTx().set({tx: tx});
      stx.notStealth().should.equal(false);
    });

    it('should know this is not a stealth tx', function() {
      var tx2 = Transaction(tx);
      tx2.txouts.pop();
      tx2.txoutsvi = Varint(1);
      var stx = StealthTx().set({tx: tx2});
      stx.notStealth().should.equal("Not enough txouts");
    });

  });

  describe('@parseOpReturnData', function() {
    var txout = tx.txouts[0];
    var buf = txout.script.chunks[1].buf;
    var parsed = StealthTx.parseOpReturnData(buf);
    (typeof parsed.version).should.equal('number');
    parsed.noncebuf.length.should.be.above(0);
    parsed.pubkey.toBuffer().length.should.equal(33);
  });

});