func TestPubSubBubbling(t *testing.T) {
	defer errLogBuf.Reset()
	testPath := "a/b/c"

	m := config.NewManager()

	_, err := m.Subscribe("", nil)
	assert.EqualError(t, err, config.ErrPathEmpty.Error())

	subID, err := m.Subscribe(testPath, &testSubscriber{
		f: func(path string, sg scope.Scope, id int64) error {
			assert.Equal(t, testPath, path)
			if sg == scope.DefaultID {
				assert.Equal(t, int64(0), id)
			} else {
				assert.Equal(t, int64(123), id)
			}
			return nil
		},
	})
	assert.NoError(t, err)
	assert.Equal(t, 1, subID, "The very first subscription ID should be 1")

	assert.NoError(t, m.Write(config.Value(1), config.Path(testPath), config.Scope(scope.WebsiteID, 123)))

	assert.NoError(t, m.Close())
	time.Sleep(time.Millisecond * 10) // wait for goroutine to close

	// send on closed channel
	assert.NoError(t, m.Write(config.Value(1), config.Path(testPath+"Doh"), config.Scope(scope.WebsiteID, 3)))
	assert.EqualError(t, m.Close(), config.ErrPublisherClosed.Error())
}

func (t *HTTPRateLimit) quota() throttled.RateQuota {
	var burst, request int
	var duration string

	if burst, _ = t.Config.GetInt(config.Path(PathRateLimitBurst)); burst < 0 {
		burst = DefaultBurst
	}
	if request, _ = t.Config.GetInt(config.Path(PathRateLimitRequests)); request == 0 {
		request = DefaultRequests
	}
	if duration, _ = t.Config.GetString(config.Path(PathRateLimitDuration)); duration == "" {
		duration = DefaultDuration
	}

	var r throttled.Rate
	switch duration {
	case "s": // second
		r = throttled.PerSec(request)
	case "i": // minute
		r = throttled.PerMin(request)
	case "h": // hour
		r = throttled.PerHour(request)
	case "d": // day
		r = throttled.PerDay(request)
	default:
		r = throttled.PerHour(request)
	}

	return throttled.RateQuota{r, burst}
}

// ConfigString tries to get a value from the scopeStore if empty
// falls back to default global scope.
// If using etcd or consul maybe this can lead to round trip times because of network access.
func (w *Website) ConfigString(path ...string) string {
	val := w.cr.GetString(config.ScopeWebsite(w.WebsiteID()), config.Path(path...))
	if val == "" {
		val = w.cr.GetString(config.Path(path...))
	}
	return val
}

// ConfigString tries to get a value from the scopeStore if empty
// falls back to default global scope.
// If using etcd or consul maybe this can lead to round trip times because of network access.
func (s *Store) ConfigString(path ...string) string {
	val := s.cr.GetString(config.ScopeStore(s.StoreID()), config.Path(path...)) // TODO(cs) check for not bubbeling
	if val == "" {
		val = s.cr.GetString(config.Path(path...))
	}
	return val
}

// ConfigString tries to get a value from the scopeStore if empty
// falls back to default global scope.
// If using etcd or consul maybe this can lead to round trip times because of network access.
func (s *Store) ConfigString(path ...string) string {
	val := s.cr.GetString(config.ScopeStore(s), config.Path(path...))
	if val == "" {
		val = s.cr.GetString(config.Path(path...))
	}
	return val
}

// TestApplyCoreConfigData reads from the MySQL core_config_data table and applies
// these value to the underlying storage. tries to get back the values from the
// underlying storage
func TestApplyCoreConfigData(t *testing.T) {
	defer debugLogBuf.Reset()
	defer infoLogBuf.Reset()

	dbc := csdb.MustConnectTest()
	defer func() { assert.NoError(t, dbc.Close()) }()
	sess := dbc.NewSession(nil) // nil tricks the NewSession ;-)

	s := config.NewService()
	defer func() { assert.NoError(t, s.Close()) }()

	loadedRows, writtenRows, err := s.ApplyCoreConfigData(sess)
	if err != nil {
		t.Fatal(err)
	}
	assert.True(t, loadedRows > 9, "loadedRows %d", loadedRows)
	assert.True(t, writtenRows > 9, "writtenRows %d", writtenRows)

	//	println("\n", debugLogBuf.String(), "\n")
	//	println("\n", infoLogBuf.String(), "\n")

	assert.NoError(t, s.Write(config.Path("web/secure/offloader_header"), config.ScopeDefault(), config.Value("SSL_OFFLOADED")))

	h, err := s.String(config.Path("web/secure/offloader_header"), config.ScopeDefault())
	assert.NoError(t, err)
	assert.Exactly(t, "SSL_OFFLOADED", h)

	assert.Len(t, s.Storage.AllKeys(), writtenRows)
}

func TestPubSubBubbling(t *testing.T) {
	defer debugLogBuf.Reset()
	testPath := "a/b/c"

	s := config.NewService()

	_, err := s.Subscribe("", nil)
	assert.EqualError(t, err, config.ErrPathEmpty.Error())

	subID, err := s.Subscribe(testPath, &testSubscriber{
		f: func(path string, sg scope.Scope, id int64) error {
			assert.Equal(t, testPath, path)
			if sg == scope.DefaultID {
				assert.Equal(t, int64(0), id)
			} else {
				assert.Equal(t, int64(123), id)
			}
			return nil
		},
	})
	assert.NoError(t, err)
	assert.Equal(t, 1, subID, "The very first subscription ID should be 1")

	assert.NoError(t, s.Write(config.Value(1), config.Path(testPath), config.Scope(scope.WebsiteID, 123)))
	assert.NoError(t, s.Close())

	// send on closed channel
	assert.NoError(t, s.Write(config.Value(1), config.Path(testPath+"Doh"), config.Scope(scope.WebsiteID, 3)))
	assert.EqualError(t, s.Close(), config.ErrPublisherClosed.Error())
}

// WithValidateBaseURL is a middleware which checks if the request base URL
// is equal to the one store in the configuration, if not
// i.e. redirect from http://example.com/store/ to http://www.example.com/store/
// @see app/code/Magento/Store/App/FrontController/Plugin/RequestPreprocessor.php
func WithValidateBaseURL(cr config.ReaderPubSuber) ctxhttp.Middleware {

	// Having the GetBool command here, means you must restart the app to take
	// changes in effect. @todo refactor and use pub/sub to automatically change
	// the isRedirectToBase value.
	checkBaseURL, err := cr.GetBool(config.Path(PathRedirectToBase)) // scope default
	if config.NotKeyNotFoundError(err) && PkgLog.IsDebug() {
		PkgLog.Debug("ctxhttp.WithValidateBaseUrl.GetBool", "err", err, "path", PathRedirectToBase)
	}

	redirectCode := http.StatusMovedPermanently
	if rc, err := cr.GetInt(config.Path(PathRedirectToBase)); rc != redirectCode && false == config.NotKeyNotFoundError(err) {
		redirectCode = http.StatusFound
	}

	return func(h ctxhttp.Handler) ctxhttp.Handler {
		return ctxhttp.HandlerFunc(func(ctx context.Context, w http.ResponseWriter, r *http.Request) error {

			if checkBaseURL && r.Method != "POST" {

				_, requestedStore, err := FromContextReader(ctx)
				if err != nil {
					if PkgLog.IsDebug() {
						PkgLog.Debug("ctxhttp.WithValidateBaseUrl.FromContextServiceReader", "err", err, "ctx", ctx)
					}
					return errgo.Mask(err)
				}

				baseURL, err := requestedStore.BaseURL(config.URLTypeWeb, requestedStore.IsCurrentlySecure(r))
				if err != nil {
					if PkgLog.IsDebug() {
						PkgLog.Debug("ctxhttp.WithValidateBaseUrl.requestedStore.BaseURL", "err", err, "ctx", ctx)
					}
					return errgo.Mask(err)
				}

				if err := httputils.IsBaseURLCorrect(r, &baseURL); err != nil {
					if PkgLog.IsDebug() {
						PkgLog.Debug("store.WithValidateBaseUrl.IsBaseUrlCorrect.error", "err", err, "baseURL", baseURL, "request", r)
					}

					baseURL.Path = r.URL.Path
					baseURL.RawPath = r.URL.RawPath
					baseURL.RawQuery = r.URL.RawQuery
					baseURL.Fragment = r.URL.Fragment
					http.Redirect(w, r, (&baseURL).String(), redirectCode)
					return nil
				}
			}
			return h.ServeHTTPContext(ctx, w, r)
		})
	}
}

func (u *uniqueID) getPort() int {
	p := u.config.GetInt(config.Path(PathSmtpPort), config.ScopeStore(u.scopeID))
	if p < 1 {
		p = defaultPort
	}
	return p
}

// WithPasswordFromConfig retrieves the password from the configuration with path
// as defined in constant PathJWTPassword
func WithPasswordFromConfig(cr config.Getter) Option {
	pw, err := cr.String(config.Path(PathJWTPassword))
	if config.NotKeyNotFoundError(err) {
		pw = string(uuid.NewRandom())
	}
	return WithPassword([]byte(pw))
}

func (c *emailConfig) getPort(s config.ScopeIDer) int {
	p := c.Config.GetInt(config.Path(PathSmtpPort), config.ScopeStore(s))
	if p < 1 {
		p = defaultPort
	}
	return p
}

func (c *emailConfig) getHost(s config.ScopeIDer) string {
	h := c.Config.GetString(config.Path(PathSmtpHost), config.ScopeStore(s))
	if h == "" {
		h = defaultHost
	}
	return h
}

// BaseCurrencyCode retrieves application base currency code
func BaseCurrencyCode(cr config.Reader) (language.Currency, error) {
	base, err := cr.GetString(config.Path(PathCurrencyBase))
	if config.NotKeyNotFoundError(err) {
		return language.Currency{}, err
	}
	return language.ParseCurrency(base)
}

func (dm *Daemon) getPort() int {
	p := dm.config.GetInt(config.Path(PathSmtpPort), config.ScopeStore(dm.scopeID))
	if p < 1 {
		p = defaultPort
	}
	return p
}

func (dm *Daemon) getHost() string {
	h := dm.config.GetString(config.Path(PathSmtpHost), config.ScopeStore(dm.scopeID))
	if h == "" {
		h = defaultHost
	}
	return h
}

// SetMandrill sets the Mandrill API for sending emails. This function is not
// recursive and returns nil. @todo
func SetMandrill(opts ...MandrillOptions) DaemonOption {
	return func(da *Daemon) DaemonOption {
		// this whole func is just a quick write down. no idea if it's working
		// and refactor ... 8-)
		apiKey := da.Config.GetString(config.ScopeStore(da.ScopeID), config.Path(PathSmtpMandrillAPIKey))

		if apiKey == "" {
			da.lastErrs = append(da.lastErrs, errors.New("Mandrill API Key is empty."))
			return nil
		}

		md, err := gochimp.NewMandrill(apiKey)
		if err != nil {
			da.lastErrs = append(da.lastErrs, err)
			return nil
		}
		for _, o := range opts {
			o(md)
		}

		da.sendFunc = func(from string, to []string, msg io.WriterTo) error {

			// @todo figure out if "to" contains To, CC and BCC addresses.

			addr, err := mail.ParseAddress(from)
			if err != nil {
				return log.Error("mail.daemon.Mandrill.ParseAddress", "err", err, "from", from, "to", to)
			}

			r := gochimp.Recipient{
				Name:  addr.Name,
				Email: addr.Address,
			}

			var buf bytes.Buffer
			if _, err := msg.WriteTo(&buf); err != nil {
				return log.Error("mail.daemon.Mandrill.MessageWriteTo", "err", err, "from", from, "to", to, "msg", buf.String())
			}

			resp, err := md.MessageSendRaw(buf.String(), to, r, false)
			if err != nil {
				return log.Error("mail.daemon.Mandrill.MessageSendRaw", "err", err, "from", from, "to", to, "msg", buf.String())
			}
			if log.IsDebug() {
				log.Debug("mail.daemon.Mandrill.MessageSendRaw", "resp", resp, "from", from, "to", to, "msg", buf.String())
			}
			// The last arg in MessageSendRaw means async in the Mandrill API:
			// Async: enable a background sending mode that is optimized for bulk sending.
			// In async mode, messages/send will immediately return a status of "queued"
			// for every recipient. To handle rejections when sending in async mode, set
			// up a webhook for the 'reject' event. Defaults to false for messages with
			// no more than 10 recipients; messages with more than 10 recipients are
			// always sent asynchronously, regardless of the value of async.
			return nil
		}
		da.dialer = nil

		return nil
	}
}

func (u *uniqueID) getHost() string {
	h := u.config.GetString(config.Path(PathSmtpHost), config.ScopeStore(u.scopeID))
	if h == "" {
		h = defaultHost
	}
	return h
}

// IsSingleStoreMode check if Single-Store mode is enabled in configuration and from Store count < 3.
// This flag only shows that admin does not want to show certain UI components at backend (like store switchers etc)
// if Magento has only one store view but it does not check the store view collection.
func (sm *Service) IsSingleStoreMode() bool {
	isEnabled, err := sm.cr.GetBool(config.Path(PathSingleStoreModeEnabled)) // default scope
	if config.NotKeyNotFoundError(err) {
		// TODO maybe log error here
		return false
	}
	return sm.HasSingleStore() && isEnabled
}

func TestPubSubEvict(t *testing.T) {
	defer debugLogBuf.Reset()

	levelCall := new(levelCalls)

	var pErr = errors.New("WTF Eviction? Panic!")
	s := config.NewService()
	subID, err := s.Subscribe("x/y", &testSubscriber{
		f: func(path string, sg scope.Scope, id int64) error {
			assert.Contains(t, path, "x/y")
			// this function gets called 3 times
			levelCall.Lock()
			levelCall.level2Calls++
			levelCall.Unlock()
			return nil
		},
	})
	assert.NoError(t, err)
	assert.Equal(t, 1, subID)

	subID, err = s.Subscribe("x/y/z", &testSubscriber{
		f: func(path string, sg scope.Scope, id int64) error {
			levelCall.Lock()
			levelCall.level3Calls++
			levelCall.Unlock()
			// this function gets called 1 times and then gets removed
			panic(pErr)
		},
	})
	assert.NoError(t, err)
	assert.Equal(t, 2, subID)

	assert.NoError(t, s.Write(config.Value(321), config.Path("x/y/z"), config.ScopeStore(123)))
	assert.NoError(t, s.Write(config.Value(321), config.Path("x/y/a"), config.ScopeStore(123)))
	assert.NoError(t, s.Write(config.Value(321), config.Path("x/y/z"), config.ScopeStore(123)))

	assert.NoError(t, s.Close())

	assert.Contains(t, debugLogBuf.String(), "config.pubSub.publish.recover.err err: WTF Eviction? Panic!")

	levelCall.Lock()
	assert.Equal(t, 3, levelCall.level2Calls)
	assert.Equal(t, 1, levelCall.level3Calls)
	levelCall.Unlock()
	assert.EqualError(t, s.Close(), config.ErrPublisherClosed.Error())
}

// AllowedCurrencies returns all installed currencies from global scope.
func AllowedCurrencies(cr config.Reader) ([]string, error) {
	installedCur, err := cr.GetString(config.Path(PathSystemCurrencyInstalled))
	if config.NotKeyNotFoundError(err) {
		return nil, err
	}
	// TODO use internal model of PathSystemCurrencyInstalled defined in package directory
	return strings.Split(installedCur, ","), nil
}