define(function(require) {
    'use strict';

    var LawnchairDAO = require('js/dao/lawnchair-dao'),
        PublicKeyDAO = require('js/dao/publickey-dao'),
        KeychainDAO = require('js/dao/keychain-dao'),
        PrivateKeyDAO = require('js/dao/privatekey-dao'),
        Crypto = require('js/crypto/crypto'),
        expect = chai.expect;

    var testUser = 'test@example.com';

    describe('Keychain DAO unit tests', function() {

        var keychainDao, lawnchairDaoStub, pubkeyDaoStub, privkeyDaoStub, cryptoStub;

        beforeEach(function() {
            lawnchairDaoStub = sinon.createStubInstance(LawnchairDAO);
            pubkeyDaoStub = sinon.createStubInstance(PublicKeyDAO);
            privkeyDaoStub = new sinon.createStubInstance(PrivateKeyDAO);
            cryptoStub = new sinon.createStubInstance(Crypto);
            keychainDao = new KeychainDAO(lawnchairDaoStub, pubkeyDaoStub, privkeyDaoStub, cryptoStub);
        });

        afterEach(function() {});

        describe('verify public key', function() {
            it('should verify public key', function(done) {
                var uuid = 'asdfasdfasdfasdf';
                pubkeyDaoStub.verify.yields();

                keychainDao.verifyPublicKey(uuid, function() {
                    expect(pubkeyDaoStub.verify.calledWith(uuid)).to.be.true;
                    done();
                });
            });
        });

        describe('listLocalPublicKeys', function() {
            it('should work', function(done) {
                lawnchairDaoStub.list.withArgs('publickey', 0, null).yields();

                keychainDao.listLocalPublicKeys(function() {
                    expect(lawnchairDaoStub.list.callCount).to.equal(1);
                    done();
                });
            });
        });

        describe('removeLocalPublicKey', function() {
            it('should work', function(done) {
                var id = 'asdf';

                lawnchairDaoStub.remove.withArgs('publickey_' + id).yields();

                keychainDao.removeLocalPublicKey(id, function() {
                    expect(lawnchairDaoStub.remove.callCount).to.equal(1);
                    done();
                });
            });
        });

        describe('refreshKeyForUserId', function() {
            var getPubKeyStub,
                oldKey = {
                    _id: 123
                },
                newKey = {
                    _id: 456
                },
                importedKey = {
                    _id: 789,
                    imported: true
                };

            beforeEach(function() {
                getPubKeyStub = sinon.stub(keychainDao, 'getReceiverPublicKey');
            });

            afterEach(function() {
                keychainDao.getReceiverPublicKey.restore();
                delete keychainDao.requestPermissionForKeyUpdate;
            });

            it('should not find a key', function(done) {
                getPubKeyStub.yields();

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.not.exist;

                    done();
                });
            });

            it('should not update the key when up to date', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields(null, oldKey);

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.to.equal(oldKey);

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;


                    done();
                });
            });

            it('should update key', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields();
                pubkeyDaoStub.getByUserId.withArgs(testUser).yields(null, newKey);
                keychainDao.requestPermissionForKeyUpdate = function(opts, cb) {
                    expect(opts.userId).to.equal(testUser);
                    expect(opts.newKey).to.equal(newKey);
                    cb(true);
                };
                lawnchairDaoStub.remove.withArgs('publickey_' + oldKey._id).yields();
                lawnchairDaoStub.persist.withArgs('publickey_' + newKey._id, newKey).yields();

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.equal(newKey);

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.remove.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.persist.calledOnce).to.be.true;

                    done();
                });
            });

            it('should remove key', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields();
                pubkeyDaoStub.getByUserId.withArgs(testUser).yields();
                keychainDao.requestPermissionForKeyUpdate = function(opts, cb) {
                    expect(opts.userId).to.equal(testUser);
                    expect(opts.newKey).to.not.exist;
                    cb(true);
                };
                lawnchairDaoStub.remove.withArgs('publickey_' + oldKey._id).yields();

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.not.exist;

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.remove.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.persist.called).to.be.false;

                    done();
                });
            });

            it('should go offline while fetching new key', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields();
                pubkeyDaoStub.getByUserId.withArgs(testUser).yields({
                    code: 42
                });

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.to.equal(oldKey);

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.remove.called).to.be.false;
                    expect(lawnchairDaoStub.persist.called).to.be.false;

                    done();
                });
            });

            it('should not remove old key on user rejection', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields();
                pubkeyDaoStub.getByUserId.withArgs(testUser).yields(null, newKey);
                keychainDao.requestPermissionForKeyUpdate = function(opts, cb) {
                    expect(opts.userId).to.equal(testUser);
                    expect(opts.newKey).to.exist;
                    cb(false);
                };

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.equal(oldKey);

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.remove.called).to.be.false;
                    expect(lawnchairDaoStub.persist.called).to.be.false;

                    done();
                });
            });

            it('should not remove manually imported key', function(done) {
                getPubKeyStub.yields(null, importedKey);

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.equal(importedKey);

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.false;

                    done();
                });
            });

            it('should update not the key when offline', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields({
                    code: 42
                });

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.to.equal(oldKey);

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.called).to.be.false;
                    expect(lawnchairDaoStub.remove.called).to.be.false;
                    expect(lawnchairDaoStub.persist.called).to.be.false;

                    done();
                });
            });

            it('should error while persisting new key', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields();
                pubkeyDaoStub.getByUserId.withArgs(testUser).yields(null, newKey);
                keychainDao.requestPermissionForKeyUpdate = function(opts, cb) {
                    expect(opts.userId).to.equal(testUser);
                    expect(opts.newKey).to.equal(newKey);
                    cb(true);
                };
                lawnchairDaoStub.remove.withArgs('publickey_' + oldKey._id).yields();
                lawnchairDaoStub.persist.yields({});

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.remove.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.persist.calledOnce).to.be.true;

                    done();
                });
            });

            it('should error while deleting old key', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields();
                pubkeyDaoStub.getByUserId.withArgs(testUser).yields();
                keychainDao.requestPermissionForKeyUpdate = function(opts, cb) {
                    expect(opts.userId).to.equal(testUser);
                    cb(true);
                };
                lawnchairDaoStub.remove.yields({});

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.remove.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.persist.called).to.be.false;

                    done();
                });
            });

            it('should error while persisting new key', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields();
                pubkeyDaoStub.getByUserId.withArgs(testUser).yields(null, newKey);
                keychainDao.requestPermissionForKeyUpdate = function(opts, cb) {
                    expect(opts.userId).to.equal(testUser);
                    expect(opts.newKey).to.equal(newKey);
                    cb(true);
                };
                lawnchairDaoStub.remove.withArgs('publickey_' + oldKey._id).yields();
                lawnchairDaoStub.persist.yields({});

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;

                    expect(getPubKeyStub.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.remove.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.persist.calledOnce).to.be.true;

                    done();
                });
            });

            it('should error when get failed', function(done) {
                getPubKeyStub.yields(null, oldKey);
                pubkeyDaoStub.get.withArgs(oldKey._id).yields({});

                keychainDao.refreshKeyForUserId(testUser, function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;

                    done();
                });
            });
        });

        describe('lookup public key', function() {
            it('should fail', function(done) {
                keychainDao.lookupPublicKey(undefined, function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;
                    done();
                });
            });

            it('should fail', function(done) {
                lawnchairDaoStub.read.yields(42);

                keychainDao.lookupPublicKey('12345', function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;
                    expect(lawnchairDaoStub.read.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work from local storage', function(done) {
                lawnchairDaoStub.read.yields(null, {
                    _id: '12345',
                    publicKey: 'asdf'
                });

                keychainDao.lookupPublicKey('12345', function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.exist;
                    expect(lawnchairDaoStub.read.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work from cloud', function(done) {
                lawnchairDaoStub.read.yields();
                pubkeyDaoStub.get.yields(null, {
                    _id: '12345',
                    publicKey: 'asdf'
                });
                lawnchairDaoStub.persist.yields();

                keychainDao.lookupPublicKey('12345', function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.exist;
                    expect(key._id).to.equal('12345');
                    expect(lawnchairDaoStub.read.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.get.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.persist.calledOnce).to.be.true;
                    done();
                });
            });
        });

        describe('get public keys by id', function() {
            it('should fail', function(done) {
                keychainDao.getPublicKeys([], function(err, keys) {
                    expect(err).to.not.exist;
                    expect(keys.length).to.equal(0);
                    done();
                });
            });

            it('should fail', function(done) {
                lawnchairDaoStub.read.yields(42);

                var ids = [{
                    _id: '12345'
                }];
                keychainDao.getPublicKeys(ids, function(err, keys) {
                    expect(err).to.exist;
                    expect(keys).to.not.exist;
                    expect(lawnchairDaoStub.read.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work from local storage', function(done) {
                lawnchairDaoStub.read.yields(null, {
                    _id: '12345',
                    publicKey: 'asdf'
                });

                var ids = [{
                    _id: '12345'
                }];
                keychainDao.getPublicKeys(ids, function(err, keys) {
                    expect(err).to.not.exist;
                    expect(keys.length).to.equal(1);
                    expect(keys[0]._id).to.equal('12345');
                    expect(lawnchairDaoStub.read.calledOnce).to.be.true;
                    done();
                });
            });
        });

        describe('get receiver public key', function() {
            it('should fail due to error in lawnchair list', function(done) {
                lawnchairDaoStub.list.yields(42);

                keychainDao.getReceiverPublicKey(testUser, function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work from lawnchair list', function(done) {
                lawnchairDaoStub.list.yields(null, [{
                    _id: '12345',
                    userId: testUser,
                    publicKey: 'asdf'
                }]);

                keychainDao.getReceiverPublicKey(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.exist;
                    expect(key._id).to.equal('12345');
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work for keys with secondary userIds', function(done) {
                lawnchairDaoStub.list.yields(null, [{
                    _id: '12345',
                    userId: 'not testUser',
                    userIds: [{
                        emailAddress: testUser
                    }],
                    publicKey: 'asdf'
                }]);

                keychainDao.getReceiverPublicKey(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.exist;
                    expect(key._id).to.equal('12345');
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    done();
                });
            });

            it('should fail due to error in pubkey dao', function(done) {
                lawnchairDaoStub.list.yields(null, []);
                pubkeyDaoStub.getByUserId.yields({});

                keychainDao.getReceiverPublicKey(testUser, function(err, key) {
                    expect(err).to.exist;
                    expect(key).to.not.exist;
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work from pubkey dao with empty result', function(done) {
                lawnchairDaoStub.list.yields(null, []);
                pubkeyDaoStub.getByUserId.yields();

                keychainDao.getReceiverPublicKey(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.not.exist;
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work from pubkey dao', function(done) {
                lawnchairDaoStub.list.yields(null, []);
                pubkeyDaoStub.getByUserId.yields(null, {
                    _id: '12345',
                    publicKey: 'asdf'
                });
                lawnchairDaoStub.persist.yields();

                keychainDao.getReceiverPublicKey(testUser, function(err, key) {
                    expect(err).to.not.exist;
                    expect(key).to.exist;
                    expect(key._id).to.equal('12345');
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.persist.calledOnce).to.be.true;
                    done();
                });
            });
        });

        describe('get user key pair', function() {
            it('should work if local keys are already present', function(done) {
                lawnchairDaoStub.list.yields(null, [{
                    _id: '12345',
                    userId: testUser,
                    publicKey: 'asdf'
                }]);
                lawnchairDaoStub.read.yields(null, {
                    _id: '12345',
                    publicKey: 'asdf',
                    encryptedKey: 'qwer'
                });

                keychainDao.getUserKeyPair(testUser, function(err, keys) {
                    expect(err).to.not.exist;
                    expect(keys).to.exist;
                    expect(keys.publicKey).to.exist;
                    expect(keys.privateKey).to.exist;
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.read.calledTwice).to.be.true;
                    done();
                });
            });

            it('should work if local keys are not already present', function(done) {
                lawnchairDaoStub.list.yields();
                pubkeyDaoStub.getByUserId.yields();

                keychainDao.getUserKeyPair(testUser, function(err, keys) {
                    expect(err).to.not.exist;
                    expect(keys).to.not.exist;
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    expect(pubkeyDaoStub.getByUserId.calledOnce).to.be.true;
                    done();
                });
            });

            it('should work if local keys are not already present', function(done) {
                lawnchairDaoStub.list.yields();
                pubkeyDaoStub.getByUserId.yields(null, {
                    _id: '12345',
                    publicKey: 'asdf'
                });
                lawnchairDaoStub.read.yields(null, {
                    _id: '12345',
                    publicKey: 'asdf',
                    encryptedKey: 'qwer'
                });

                keychainDao.getUserKeyPair(testUser, function(err, keys) {
                    expect(err).to.not.exist;
                    expect(keys).to.exist;
                    expect(keys.publicKey).to.exist;
                    expect(keys.privateKey).to.exist;
                    expect(lawnchairDaoStub.list.calledOnce).to.be.true;
                    expect(lawnchairDaoStub.read.calledTwice).to.be.true;
                    done();
                });
            });
        });

        describe('setDeviceName', function() {
            it('should work', function(done) {
                lawnchairDaoStub.persist.yields();

                keychainDao.setDeviceName('iPhone', done);
            });
        });

        describe('getDeviceSecret', function() {
            it('should fail when device name is not set', function(done) {
                lawnchairDaoStub.read.withArgs('devicename').yields();

                keychainDao.getDeviceSecret(function(err, deviceSecret) {
                    expect(err.message).to.equal('Device name not set!');
                    expect(deviceSecret).to.not.exist;
                    done();
                });
            });

            it('should fail due to erorr when reading device name', function(done) {
                lawnchairDaoStub.read.withArgs('devicename').yields(42);

                keychainDao.getDeviceSecret(function(err, deviceSecret) {
                    expect(err).to.equal(42);
                    expect(deviceSecret).to.not.exist;
                    done();
                });
            });

            it('should fail due to erorr when reading device key', function(done) {
                lawnchairDaoStub.read.withArgs('devicename').yields(null, 'iPhone');
                lawnchairDaoStub.read.withArgs('devicekey').yields(42);

                keychainDao.getDeviceSecret(function(err, deviceSecret) {
                    expect(err).to.equal(42);
                    expect(deviceSecret).to.not.exist;
                    done();
                });
            });

            it('should fail due to erorr when storing device key', function(done) {
                lawnchairDaoStub.read.withArgs('devicename').yields(null, 'iPhone');
                lawnchairDaoStub.read.withArgs('devicekey').yields();
                lawnchairDaoStub.persist.withArgs('devicekey').yields(42);

                keychainDao.getDeviceSecret(function(err, deviceSecret) {
                    expect(err).to.equal(42);
                    expect(deviceSecret).to.not.exist;
                    done();
                });
            });

            it('should work when device key is not set', function(done) {
                lawnchairDaoStub.read.withArgs('devicename').yields(null, 'iPhone');
                lawnchairDaoStub.read.withArgs('devicekey').yields();
                lawnchairDaoStub.persist.withArgs('devicekey').yields();
                cryptoStub.encrypt.yields(null, 'secret');

                keychainDao.getDeviceSecret(function(err, deviceSecret) {
                    expect(err).to.not.exist;
                    expect(deviceSecret).to.equal('secret');
                    done();
                });
            });

            it('should work when device key is set', function(done) {
                lawnchairDaoStub.read.withArgs('devicename').yields(null, 'iPhone');
                lawnchairDaoStub.read.withArgs('devicekey').yields(null, 'key');
                cryptoStub.encrypt.withArgs('iPhone', 'key').yields(null, 'secret');

                keychainDao.getDeviceSecret(function(err, deviceSecret) {
                    expect(err).to.not.exist;
                    expect(deviceSecret).to.equal('secret');
                    done();
                });
            });
        });

        describe('put user keypair', function() {
            it('should fail', function(done) {
                var keypair = {
                    publicKey: {
                        _id: '12345',
                        userId: testUser,
                        publicKey: 'asdf'
                    },
                    privateKey: {
                        _id: '12345',
                        encryptedKey: 'qwer'
                    }
                };

                keychainDao.putUserKeyPair(keypair, function(err) {
                    expect(err).to.exist;
                    done();
                });
            });

            it('should work', function(done) {
                var keypair = {
                    publicKey: {
                        _id: '12345',
                        userId: testUser,
                        publicKey: 'asdf'
                    },
                    privateKey: {
                        _id: '12345',
                        userId: testUser,
                        encryptedKey: 'qwer'
                    }
                };

                lawnchairDaoStub.persist.yields();
                pubkeyDaoStub.put.yields();

                keychainDao.putUserKeyPair(keypair, function(err) {
                    expect(err).to.not.exist;
                    expect(lawnchairDaoStub.persist.calledTwice).to.be.true;
                    expect(pubkeyDaoStub.put.calledOnce).to.be.true;
                    done();
                });
            });
        });

    });

});