text: 'use strict';
  
  var chai = chai || require('chai');
  var should = chai.should();
  var sinon = require('sinon');
  var bitcore = bitcore || require('bitcore');
  var FakeSocket = require('./mocks/FakeBlockchainSocket');
  
  var copay = copay || require('../copay');
  var Buffer = bitcore.Buffer;
  var Insight = copay.Insight;
  
  var ADDRESSES = [
    '2NATQJnaQe2CUKLyhL1zdNkttJM1dUH9HaM',
    '2NE9hTCffeugo5gQtfB4owq98gyTeWC56yb', // 41btc
    '2N9D5bcCQ2bPWUDByQ6Qb5bMgMtgsk1rw3x', // 50btc
    '2NBEAi14f3xhwmGs9omEgKUwsW84BkzLp7S',
    '2N3RhiBW4ssXJnEbPjBCYThJHhEHQWAapf6',
    '2Mvn2Duvw8cdHs5AB8ZLXfoef1a71UrDr4W',
    '2NFjCBFZSsxiwWAD7CKQ3hzWFtf9DcqTucY',
    '2N9EdxU3co5XKTyj3yhFBeU3qw3EM1rrgzE'
  ];
  
  var UNSPENT = [{
    address: "2NE9hTCffeugo5gQtfB4owq98gyTeWC56yb",
    txid: "d5597c6cf7f72507af63a4d5a2f9f84edb45fb42452cc8c514435b7a93158915",
    vout: 0,
    ts: 1397050347,
    scriptPubKey: "a914e54f125244a0bf91f9c5d861dc28343ccf19883d87",
    amount: 41,
    confirmations: 7007
  }, {
    address: "2N9D5bcCQ2bPWUDByQ6Qb5bMgMtgsk1rw3x",
    txid: "90d0e1f993fc41596e7b0a7a3be8ef65d606164e13ce538bd3f48136b60eff5a",
    vout: 0,
    ts: 1397070106,
    scriptPubKey: "a914af1a2d1a9c0fa172ed70bc1c50ea6b66994e9abf87",
    amount: 50,
    confirmations: 6728
  }];
  
  var FAKE_OPTS = {
    url: 'http://something.com:123',
  }
  
  describe('Insight model', function() {
  
    before(function() {
      sinon.stub(Insight.prototype, "_getSocketIO", function() {
        return new FakeSocket();
      });
    });
  
    after(function() {
      Insight.prototype._getSocketIO.restore();
    });
  
    it('should create an instance', function() {
      var blockchain = new Insight(FAKE_OPTS);
      should.exist(blockchain);
      blockchain.url.should.be.equal('http://something.com:123');
    });
  
    it('should subscribe to inventory', function(done) {
      var blockchain = new Insight(FAKE_OPTS);
      var socket = blockchain.getSocket();
      var emitSpy = sinon.spy(socket, 'emit');
      blockchain.on('connect', function() {
        emitSpy.calledWith('subscribe', 'inv');
        done();
      });
    });
  
    it('should be able to destroy the instance', function(done) {
      var blockchain = new Insight(FAKE_OPTS);
      blockchain.status.should.be.equal('disconnected');
      var socket = blockchain.getSocket();
      blockchain.on('connect', function() {
        blockchain.subscribe('mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM');
        Object.keys(blockchain.getSubscriptions()).length.should.equal(1);
        blockchain.destroy();
        Object.keys(blockchain.getSubscriptions()).length.should.equal(0);
        blockchain.status.should.be.equal('destroyed');
        done();
      });
    });
  
    it('should subscribe to an address', function() {
      var blockchain = new Insight(FAKE_OPTS);
      var socket = blockchain.getSocket();
      var emitSpy = sinon.spy(socket, 'emit');
  
      blockchain.subscribe('mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM');
      Object.keys(blockchain.getSubscriptions()).length.should.equal(1);
      emitSpy.calledWith('subscribe', 'mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM');
    });
  
    it('should subscribe to an address once', function() {
      var blockchain = new Insight(FAKE_OPTS);
  
      blockchain.subscribe('mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM');
      blockchain.subscribe('mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM');
      Object.keys(blockchain.getSubscriptions()).length.should.equal(1);
    });
  
    it('should subscribe to a list of addresses', function() {
      var blockchain = new Insight(FAKE_OPTS);
      var socket = blockchain.getSocket();
      var emitSpy = sinon.spy(socket, 'emit');
  
      blockchain.subscribe([
        'mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM',
        '2NBBHBjB5sd7HFqKtout1L7d6dPhwJgP2j8'
      ]);
      Object.keys(blockchain.getSubscriptions()).length.should.equal(2);
      emitSpy.calledWith('subscribe', 'mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM');
      emitSpy.calledWith('subscribe', '2NBBHBjB5sd7HFqKtout1L7d6dPhwJgP2j8');
    });
  
    it('should resubscribe to all addresses', function() {
      var blockchain = new Insight(FAKE_OPTS);
      blockchain.subscribe('mg7UbtKgMvWAixTNMbC8soyUnwFk1qxEuM');
      blockchain.subscribe('2NBBHBjB5sd7HFqKtout1L7d6dPhwJgP2j8');
      Object.keys(blockchain.getSubscriptions()).length.should.equal(2);
  
      blockchain.reSubscribe();
      Object.keys(blockchain.getSubscriptions()).length.should.equal(2);
    });
  
    it('should broadcast a raw transaction', function(done) {
      var blockchain = new Insight(FAKE_OPTS);
      var rawtx = '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';
  
      sinon.stub(blockchain, "requestPost", function(url, data, cb) {
        url.should.be.equal('/api/tx/send');
        var res = {statusCode: 200};
        var body = {txid: 1234};
        setTimeout(function() {
          cb(null, res, body);
        }, 0);
      });
  
      blockchain.broadcast(rawtx, function(err, id) {
        id.should.be.equal(1234);
        done();
      });
    });
  
    describe('getTransaction', function() {
      it('should get a transaction by id', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var txid = '123321';
        var tx = {txid: txid, more: 'something'};
  
        sinon.stub(blockchain, "request", function(url, cb) {
          url.should.be.equal('/api/tx/' + txid);
          var res = {statusCode: 200};
          var body = JSON.stringify(tx);
          setTimeout(function() {
            cb(null, res, body);
          }, 0);
        });
  
        blockchain.getTransaction(txid, function(err, t) {
          chai.expect(err).to.be.null;
          t.should.be.an('object');
          t.txid.should.be.equal(tx.txid);
          t.more.should.be.equal(tx.more);
          done();
        });
      });
  
      it('should handle a 404 error code', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var txid = '123321';
  
        sinon.stub(blockchain, "request", function(url, cb) {
          url.should.be.equal('/api/tx/' + txid);
          var res = {statusCode: 404};
          var body = '';
          setTimeout(function() {
            cb(null, res, body);
          }, 0);
        });
  
        blockchain.getTransaction(txid, function(err, t) {
          chai.expect(t).to.be.undefined;
          chai.expect(err).not.be.null;
          done();
        });
      });
  
      it('should handle a null response', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var txid = '123321';
  
        sinon.stub(blockchain, "request", function(url, cb) {
          url.should.be.equal('/api/tx/' + txid);
          var res = {statusCode: 200};
          var body = null;
          setTimeout(function() {
            cb(null, res, body);
          }, 0);
        });
  
        blockchain.getTransaction(txid, function(err, t) {
          chai.expect(t).to.be.undefined;
          chai.expect(err).not.be.null;
          done();
        });
      });
  
      it('should handle an empty response', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var txid = '123321';
  
        sinon.stub(blockchain, "request", function(url, cb) {
          url.should.be.equal('/api/tx/' + txid);
          var res = {statusCode: 200};
          var body = null;
          setTimeout(function() {
            cb(null, res, body);
          }, 0);
        });
  
        blockchain.getTransaction(txid, function(err, t) {
          chai.expect(t).to.be.undefined;
          chai.expect(err).not.be.null;
          done();
        });
      });
    });
  
    it('should get a set of transaction by addresses', function(done) {
      var blockchain = new Insight(FAKE_OPTS);
  
      sinon.stub(blockchain, "request", function(url, cb) {
        var res = {statusCode: 200};
  
        if (url == '/api/addr/2NATQJnaQe2CUKLyhL1zdNkttJM1dUH9HaM') {
          return setTimeout(function() {
            var body = JSON.stringify({transactions: [1, 2]});
            cb(null, res, body);
          }, 0);
        }
  
        if (url == '/api/addr/2NE9hTCffeugo5gQtfB4owq98gyTeWC56yb') {
          return setTimeout(function() {
            var body = JSON.stringify({transactions: [3]});
            cb(null, res, body);
          }, 0);
        }
  
        setTimeout(function() {
          var body = JSON.stringify({txid: '123123'});
          cb(null, res, body);
        }, 0);
      });
  
      var addresses = ['2NATQJnaQe2CUKLyhL1zdNkttJM1dUH9HaM', '2NE9hTCffeugo5gQtfB4owq98gyTeWC56yb'];
      blockchain.getTransactions(addresses, function(err, txs) {
        chai.expect(err).to.be.null;
        txs.length.should.be.equal(3);
        done();
      });
    });
  
    it('should get a list of unspent output', function(done) {
      var blockchain = new Insight(FAKE_OPTS);
  
      sinon.stub(blockchain, "requestPost", function(url, data, cb) {
        url.should.be.equal('/api/addrs/utxo');
        data.addrs.should.be.equal('2NATQJnaQe2CUKLyhL1zdNkttJM1dUH9HaM,2NE9hTCffeugo5gQtfB4owq98gyTeWC56yb,2N9D5bcCQ2bPWUDByQ6Qb5bMgMtgsk1rw3x');
        setTimeout(function() {
          var res = {statusCode: 200};
          var body = UNSPENT;
          cb(null, res, body);
        }, 0);
      });
  
      blockchain.getUnspent(ADDRESSES.slice(0, 3), function(err, unspent) {
        chai.expect(err).to.be.null;
        unspent.length.should.be.equal(2);
        unspent[0].address.should.be.equal('2NE9hTCffeugo5gQtfB4owq98gyTeWC56yb');
        unspent[1].address.should.be.equal('2N9D5bcCQ2bPWUDByQ6Qb5bMgMtgsk1rw3x');
        done();
      });
    });
  
    describe('getActivity', function() {
      it('should get activity for an innactive address', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
  
        sinon.stub(blockchain, "getTransactions", function(addresses, cb) {
          cb(null, []);
        });
  
        blockchain.getActivity(ADDRESSES, function(err, actives) {
          chai.expect(err).to.be.null;
          actives.length.should.equal(ADDRESSES.length);
          actives.filter(function(i) {
            return i
          }).length.should.equal(0);
          done();
        });
      });
  
      it('should get activity for active addresses', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
  
        sinon.stub(blockchain, "getTransactions", function(addresses, cb) {
          cb(null, [{
              vin: [{
                addr: '2NATQJnaQe2CUKLyhL1zdNkttJM1dUH9HaM'
              }],
              vout: []
            }, {
              vin: [{
                addr: '2NATQJnaQe2CUKLyhL1zdNkttJM1dUH9HaM'
              }],
              vout: []
            }, {
              vin: [{
                addr: '2N9D5bcCQ2bPWUDByQ6Qb5bMgMtgsk1rw3x'
              }],
              vout: []
            }, {
              vin: [],
              vout: [{
                scriptPubKey: {
                  addresses: ['2NFjCBFZSsxiwWAD7CKQ3hzWFtf9DcqTucY']
                }
              }]
          }]);
        });
  
        blockchain.getActivity(ADDRESSES, function(err, actives) {
          chai.expect(err).to.be.null;
          actives.length.should.equal(ADDRESSES.length);
          actives.filter(function(i) {
            return i
          }).length.should.equal(3);
          done();
        });
      });
    });
  
    describe('Events', function() {
      it('should emit event on a new block', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var socket = blockchain.getSocket();
        blockchain.on('connect', function() {
          var socket = blockchain.getSocket();
          socket.emit('block', '12312312');
        });
  
        blockchain.on('block', function(blockid) {
          blockid.should.be.equal('12312312');
          done();
        });
      });
  
      it('should emit event on a transaction for subscribed addresses', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var socket = blockchain.getSocket();
        blockchain.subscribe('2NFjCBFZSsxiwWAD7CKQ3hzWFtf9DcqTucY');
        blockchain.on('connect', function() {
          var socket = blockchain.getSocket();
          socket.emit('2NFjCBFZSsxiwWAD7CKQ3hzWFtf9DcqTucY', '1123');
        });
  
        blockchain.on('tx', function(ev) {
          ev.address.should.be.equal('2NFjCBFZSsxiwWAD7CKQ3hzWFtf9DcqTucY');
          ev.txid.should.be.equal('1123');
          done();
        });
      });
  
      it('should\'t emit event on a transaction for non subscribed addresses', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var socket = blockchain.getSocket();
        blockchain.on('connect', function() {
          var socket = blockchain.getSocket();
          socket.emit('2NFjCBFZSsxiwWAD7CKQ3hzWFtf9DcqTucY', '1123');
          setTimeout(function() { done(); }, 20);
        });
  
        blockchain.on('tx', function(ev) {
          throw Error('should not call this event!');
        });
      });
  
      it('should emit event on connection', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var socket = blockchain.getSocket();
        blockchain.on('connect', function() {
          done();
        });
      });
  
      it('should emit event on disconnection', function(done) {
        var blockchain = new Insight(FAKE_OPTS);
        var socket = blockchain.getSocket();
        blockchain.on('connect', function() {
          var socket = blockchain.getSocket();
          socket.emit('connect_error');
        });
        blockchain.on('disconnect', function() {
          done();
        });
      });
    });
  
  });
  