Some improvements based on golangci-lint checks, and adding more rules

Makefile

@@ -25,11 +25,14 @@ server-lint:
         echo "golangci-lint is not installed. Please see https://github.com/golangci/golangci-lint#install for installation instructions."; \
         exit 1; \
     fi; \
-    cd server; golangci-lint run ./...
+	cd server; golangci-lint run -p format -p unused -p complexity -p bugs -p performance -E asciicheck -E depguard -E dogsled -E dupl -E funlen -E gochecknoglobals -E gochecknoinits -E goconst -E gocritic -E godot -E godox -E goerr113 -E goheader -E golint -E gomnd -E gomodguard -E goprintffuncname -E gosimple -E interfacer -E lll -E misspell -E nlreturn -E nolintlint -E stylecheck -E unconvert -E whitespace -E wsl --skip-dirs services/store/sqlstore/migrations/ ./...
 
 server-test:
 	cd server; go test ./...
 
+server-doc:
+	cd server; go doc ./...
+
 watch-server:
 	cd server; modd
 

server/api/api.go

@@ -83,7 +83,7 @@ func (a *API) handlePostBlocks(w http.ResponseWriter, r *http.Request) {
 	}()
 
 	var blocks []model.Block
-	err = json.Unmarshal([]byte(requestBody), &blocks)
+	err = json.Unmarshal(requestBody, &blocks)
 	if err != nil {
 		errorResponse(w, http.StatusInternalServerError, ``)
 		return
@@ -95,15 +95,16 @@ func (a *API) handlePostBlocks(w http.ResponseWriter, r *http.Request) {
 			errorResponse(w, http.StatusInternalServerError, fmt.Sprintf(`{"description": "missing type", "id": "%s"}`, block.ID))
 			return
 		}
+
 		if block.CreateAt < 1 {
 			errorResponse(w, http.StatusInternalServerError, fmt.Sprintf(`{"description": "invalid createAt", "id": "%s"}`, block.ID))
 			return
 		}
+
 		if block.UpdateAt < 1 {
 			errorResponse(w, http.StatusInternalServerError, fmt.Sprintf(`{"description": "invalid updateAt", "id": "%s"}`, block.ID))
 			return
 		}
-
 	}
 
 	err = a.app().InsertBlocks(blocks)
@@ -190,7 +191,7 @@ func (a *API) handleImport(w http.ResponseWriter, r *http.Request) {
 	}()
 
 	var blocks []model.Block
-	err = json.Unmarshal([]byte(requestBody), &blocks)
+	err = json.Unmarshal(requestBody, &blocks)
 	if err != nil {
 		errorResponse(w, http.StatusInternalServerError, ``)
 		return
@@ -229,6 +230,7 @@ func (a *API) handleServeFile(w http.ResponseWriter, r *http.Request) {
 
 func (a *API) handleUploadFile(w http.ResponseWriter, r *http.Request) {
 	fmt.Println(`handleUploadFile`)
+
 	file, handle, err := r.FormFile("file")
 	if err != nil {
 		fmt.Fprintf(w, "%v", err)
@@ -243,6 +245,7 @@ func (a *API) handleUploadFile(w http.ResponseWriter, r *http.Request) {
 		jsonStringResponse(w, http.StatusInternalServerError, `{}`)
 		return
 	}
+
 	log.Printf(`saveFile, url: %s`, url)
 	json := fmt.Sprintf(`{ "url": "%s" }`, url)
 	jsonStringResponse(w, http.StatusOK, json)

server/app/app.go

@@ -10,10 +10,10 @@ import (
 type App struct {
 	config       *config.Configuration
 	store        store.Store
-	wsServer     *ws.WSServer
+	wsServer     *ws.Server
 	filesBackend filesstore.FileBackend
 }
 
-func New(config *config.Configuration, store store.Store, wsServer *ws.WSServer, filesBackend filesstore.FileBackend) *App {
+func New(config *config.Configuration, store store.Store, wsServer *ws.Server, filesBackend filesstore.FileBackend) *App {
 	return &App{config: config, store: store, wsServer: wsServer, filesBackend: filesBackend}
 }

server/app/blocks.go

@@ -24,12 +24,14 @@ func (a *App) InsertBlock(block model.Block) error {
 
 func (a *App) InsertBlocks(blocks []model.Block) error {
 	var blockIDsToNotify = []string{}
+
 	uniqueBlockIDs := make(map[string]bool)
 
 	for _, block := range blocks {
 		if !uniqueBlockIDs[block.ID] {
 			blockIDsToNotify = append(blockIDsToNotify, block.ID)
 		}
+
 		if len(block.ParentID) > 0 && !uniqueBlockIDs[block.ParentID] {
 			blockIDsToNotify = append(blockIDsToNotify, block.ParentID)
 		}

server/app/blocks_test.go

@@ -16,14 +16,16 @@ func TestGetParentID(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
 	store := mockstore.NewMockStore(ctrl)
-	wsserver := ws.NewWSServer()
+	wsserver := ws.NewServer()
 	app := New(&config.Configuration{}, store, wsserver, &mocks.FileBackend{})
+
 	t.Run("success query", func(t *testing.T) {
 		store.EXPECT().GetParentID(gomock.Eq("test-id")).Return("test-parent-id", nil)
 		result, err := app.GetParentID("test-id")
 		require.NoError(t, err)
 		require.Equal(t, "test-parent-id", result)
 	})
+
 	t.Run("fail query", func(t *testing.T) {
 		store.EXPECT().GetParentID(gomock.Eq("test-id")).Return("", errors.New("block-not-found"))
 		_, err := app.GetParentID("test-id")

server/main/main.go

@@ -15,6 +15,10 @@ import (
 // ----------------------------------------------------------------------------------------------------
 // WebSocket OnChange listener
 
+const (
+	timeBetweenPidMonitoringChecks = 2 * time.Second
+)
+
 func isProcessRunning(pid int) bool {
 	process, err := os.FindProcess(pid)
 	if err != nil {
@@ -27,13 +31,15 @@ func isProcessRunning(pid int) bool {
 
 func monitorPid(pid int) {
 	log.Printf("Monitoring PID: %d", pid)
+
 	go func() {
 		for {
 			if !isProcessRunning(pid) {
 				log.Printf("Monitored process not found, exiting.")
 				os.Exit(1)
 			}
-			time.Sleep(2 * time.Second)
+
+			time.Sleep(timeBetweenPidMonitoringChecks)
 		}
 	}()
 }

server/server/server.go

@@ -26,11 +26,11 @@ const CurrentVersion = "0.0.1"
 
 type Server struct {
 	config       *config.Configuration
-	wsServer     *ws.WSServer
+	wsServer     *ws.Server
 	webServer    *web.WebServer
 	store        store.Store
 	filesBackend filesstore.FileBackend
-	telemetry    *telemetry.TelemetryService
+	telemetry    *telemetry.Service
 	logger       *zap.Logger
 }
 
@@ -46,7 +46,7 @@ func New(cfg *config.Configuration) (*Server, error) {
 		return nil, err
 	}
 
-	wsServer := ws.NewWSServer()
+	wsServer := ws.NewServer()
 
 	filesBackendSettings := model.FileSettings{}
 	filesBackendSettings.SetDefaults(false)
@@ -67,11 +67,13 @@ func New(cfg *config.Configuration) (*Server, error) {
 	// Ctrl+C handling
 	handler := make(chan os.Signal, 1)
 	signal.Notify(handler, os.Interrupt)
+
 	go func() {
 		for sig := range handler {
 			// sig is a ^C, handle it
 			if sig == os.Interrupt {
 				os.Exit(1)
+
 				break
 			}
 		}

server/services/scheduler/scheduler.go

@@ -41,9 +41,7 @@ func createTask(name string, function TaskFunc, interval time.Duration, recurrin
 		defer close(task.cancelled)
 
 		ticker := time.NewTicker(interval)
-		defer func() {
-			ticker.Stop()
-		}()
+		defer ticker.Stop()
 
 		for {
 			select {

server/services/scheduler/scheduler_test.go

@@ -12,67 +12,67 @@ import (
 )
 
 func TestCreateTask(t *testing.T) {
-	TASK_NAME := "Test Task"
-	TASK_TIME := time.Millisecond * 200
-	TASK_WAIT := time.Millisecond * 100
+	taskName := "Test Task"
+	taskTime := time.Millisecond * 200
+	taskWait := time.Millisecond * 100
 
 	executionCount := new(int32)
 	testFunc := func() {
 		atomic.AddInt32(executionCount, 1)
 	}
 
-	task := CreateTask(TASK_NAME, testFunc, TASK_TIME)
+	task := CreateTask(taskName, testFunc, taskTime)
 	assert.EqualValues(t, 0, atomic.LoadInt32(executionCount))
 
-	time.Sleep(TASK_TIME + TASK_WAIT)
+	time.Sleep(taskTime + taskWait)
 
 	assert.EqualValues(t, 1, atomic.LoadInt32(executionCount))
-	assert.Equal(t, TASK_NAME, task.Name)
-	assert.Equal(t, TASK_TIME, task.Interval)
+	assert.Equal(t, taskName, task.Name)
+	assert.Equal(t, taskTime, task.Interval)
 	assert.False(t, task.Recurring)
 }
 
 func TestCreateRecurringTask(t *testing.T) {
-	TASK_NAME := "Test Recurring Task"
-	TASK_TIME := time.Millisecond * 200
-	TASK_WAIT := time.Millisecond * 100
+	taskName := "Test Recurring Task"
+	taskTime := time.Millisecond * 200
+	taskWait := time.Millisecond * 100
 
 	executionCount := new(int32)
 	testFunc := func() {
 		atomic.AddInt32(executionCount, 1)
 	}
 
-	task := CreateRecurringTask(TASK_NAME, testFunc, TASK_TIME)
+	task := CreateRecurringTask(taskName, testFunc, taskTime)
 	assert.EqualValues(t, 0, atomic.LoadInt32(executionCount))
 
-	time.Sleep(TASK_TIME + TASK_WAIT)
+	time.Sleep(taskTime + taskWait)
 
 	assert.EqualValues(t, 1, atomic.LoadInt32(executionCount))
 
-	time.Sleep(TASK_TIME)
+	time.Sleep(taskTime)
 
 	assert.EqualValues(t, 2, atomic.LoadInt32(executionCount))
-	assert.Equal(t, TASK_NAME, task.Name)
-	assert.Equal(t, TASK_TIME, task.Interval)
+	assert.Equal(t, taskName, task.Name)
+	assert.Equal(t, taskTime, task.Interval)
 	assert.True(t, task.Recurring)
 
 	task.Cancel()
 }
 
 func TestCancelTask(t *testing.T) {
-	TASK_NAME := "Test Task"
-	TASK_TIME := time.Millisecond * 100
-	TASK_WAIT := time.Millisecond * 100
+	taskName := "Test Task"
+	taskTime := time.Millisecond * 100
+	taskWait := time.Millisecond * 100
 
 	executionCount := new(int32)
 	testFunc := func() {
 		atomic.AddInt32(executionCount, 1)
 	}
 
-	task := CreateTask(TASK_NAME, testFunc, TASK_TIME)
+	task := CreateTask(taskName, testFunc, taskTime)
 	assert.EqualValues(t, 0, atomic.LoadInt32(executionCount))
 	task.Cancel()
 
-	time.Sleep(TASK_TIME + TASK_WAIT)
+	time.Sleep(taskTime + taskWait)
 	assert.EqualValues(t, 0, atomic.LoadInt32(executionCount))
 }

server/services/store/sqlstore/blocks.go

@@ -17,7 +17,8 @@ func (s *SQLStore) latestsBlocksSubquery() sq.SelectBuilder {
 }
 
 func (s *SQLStore) GetBlocksWithParentAndType(parentID string, blockType string) ([]model.Block, error) {
-	query := s.getQueryBuilder().Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
+	query := s.getQueryBuilder().
+		Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
 		FromSelect(s.latestsBlocksSubquery(), "latest").
 		Where(sq.Eq{"delete_at": 0}).
 		Where(sq.Eq{"parent_id": parentID}).
@@ -25,6 +26,7 @@ func (s *SQLStore) GetBlocksWithParentAndType(parentID string, blockType string)
 	rows, err := query.Query()
 	if err != nil {
 		log.Printf(`getBlocksWithParentAndType ERROR: %v`, err)
+
 		return nil, err
 	}
 
@@ -32,7 +34,8 @@ func (s *SQLStore) GetBlocksWithParentAndType(parentID string, blockType string)
 }
 
 func (s *SQLStore) GetBlocksWithParent(parentID string) ([]model.Block, error) {
-	query := s.getQueryBuilder().Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
+	query := s.getQueryBuilder().
+		Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
 		FromSelect(s.latestsBlocksSubquery(), "latest").
 		Where(sq.Eq{"delete_at": 0}).
 		Where(sq.Eq{"parent_id": parentID})
@@ -47,7 +50,8 @@ func (s *SQLStore) GetBlocksWithParent(parentID string) ([]model.Block, error) {
 }
 
 func (s *SQLStore) GetBlocksWithType(blockType string) ([]model.Block, error) {
-	query := s.getQueryBuilder().Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
+	query := s.getQueryBuilder().
+		Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
 		FromSelect(s.latestsBlocksSubquery(), "latest").
 		Where(sq.Eq{"delete_at": 0}).
 		Where(sq.Eq{"type": blockType})
@@ -61,7 +65,8 @@ func (s *SQLStore) GetBlocksWithType(blockType string) ([]model.Block, error) {
 }
 
 func (s *SQLStore) GetSubTree(blockID string) ([]model.Block, error) {
-	query := s.getQueryBuilder().Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
+	query := s.getQueryBuilder().
+		Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
 		FromSelect(s.latestsBlocksSubquery(), "latest").
 		Where(sq.Eq{"delete_at": 0}).
 		Where(sq.Or{sq.Eq{"id": blockID}, sq.Eq{"parent_id": blockID}})
@@ -76,7 +81,8 @@ func (s *SQLStore) GetSubTree(blockID string) ([]model.Block, error) {
 }
 
 func (s *SQLStore) GetAllBlocks() ([]model.Block, error) {
-	query := s.getQueryBuilder().Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
+	query := s.getQueryBuilder().
+		Select("id", "parent_id", "schema", "type", "title", "COALESCE(\"fields\", '{}')", "create_at", "update_at", "delete_at").
 		FromSelect(s.latestsBlocksSubquery(), "latest").
 		Where(sq.Eq{"delete_at": 0})
 
@@ -97,6 +103,7 @@ func blocksFromRows(rows *sql.Rows) ([]model.Block, error) {
 	for rows.Next() {
 		var block model.Block
 		var fieldsJSON string
+
 		err := rows.Scan(
 			&block.ID,
 			&block.ParentID,

server/services/store/sqlstore/migrate.go

@@ -1,6 +1,8 @@
 package sqlstore
 
 import (
+	"errors"
+
 	"github.com/golang-migrate/migrate/v4"
 	"github.com/golang-migrate/migrate/v4/database"
 	"github.com/golang-migrate/migrate/v4/database/postgres"
@@ -13,28 +15,24 @@ import (
 )
 
 func (s *SQLStore) Migrate() error {
+	var bresource *bindata.AssetSource
 	var driver database.Driver
 	var err error
-	var bresource *bindata.AssetSource
+
 	if s.dbType == "sqlite3" {
 		driver, err = sqlite3.WithInstance(s.db, &sqlite3.Config{})
 		if err != nil {
 			return err
 		}
-		bresource = bindata.Resource(sqlite.AssetNames(),
-			func(name string) ([]byte, error) {
-				return sqlite.Asset(name)
-			})
+		bresource = bindata.Resource(sqlite.AssetNames(), sqlite.Asset)
 	}
+
 	if s.dbType == "postgres" {
 		driver, err = postgres.WithInstance(s.db, &postgres.Config{})
 		if err != nil {
 			return err
 		}
-		bresource = bindata.Resource(pgmigrations.AssetNames(),
-			func(name string) ([]byte, error) {
-				return pgmigrations.Asset(name)
-			})
+		bresource = bindata.Resource(pgmigrations.AssetNames(), pgmigrations.Asset)
 	}
 
 	d, err := bindata.WithInstance(bresource)
@@ -48,8 +46,9 @@ func (s *SQLStore) Migrate() error {
 	}
 
 	err = m.Up()
-	if err != nil && err != migrate.ErrNoChange {
+	if err != nil && errors.Is(err, migrate.ErrNoChange) {
 		return err
 	}
+
 	return nil
 }

server/services/telemetry/telemetry.go

@@ -14,19 +14,15 @@ import (
 )
 
 const (
-	DAY_MILLISECONDS   = 24 * 60 * 60 * 1000
-	MONTH_MILLISECONDS = 31 * DAY_MILLISECONDS
-
-	RUDDER_KEY           = "placeholder_rudder_key"
-	RUDDER_DATAPLANE_URL = "placeholder_rudder_dataplane_url"
-
-	TRACK_CONFIG = "config"
+	rudderKey                  = "placeholder_rudder_key"
+	rudderDataplaneURL         = "placeholder_rudder_dataplane_url"
+	timeBetweenTelemetryChecks = 10 * time.Minute
 )
 
-type telemetryTracker func() map[string]interface{}
+type Tracker func() map[string]interface{}
 
-type TelemetryService struct {
-	trackers                   map[string]telemetryTracker
+type Service struct {
+	trackers                   map[string]Tracker
 	log                        *log.Logger
 	rudderClient               rudder.Client
 	telemetryID                string
@@ -35,25 +31,25 @@ type TelemetryService struct {
 
 type RudderConfig struct {
 	RudderKey    string
-	DataplaneUrl string
+	DataplaneURL string
 }
 
-func New(telemetryID string, log *log.Logger) *TelemetryService {
-	service := &TelemetryService{
+func New(telemetryID string, log *log.Logger) *Service {
+	service := &Service{
 		log:         log,
 		telemetryID: telemetryID,
-		trackers:    map[string]telemetryTracker{},
+		trackers:    map[string]Tracker{},
 	}
 	return service
 }
 
-func (ts *TelemetryService) RegisterTracker(name string, tracker telemetryTracker) {
+func (ts *Service) RegisterTracker(name string, tracker Tracker) {
 	ts.trackers[name] = tracker
 }
 
-func (ts *TelemetryService) getRudderConfig() RudderConfig {
-	if !strings.Contains(RUDDER_KEY, "placeholder") && !strings.Contains(RUDDER_DATAPLANE_URL, "placeholder") {
-		return RudderConfig{RUDDER_KEY, RUDDER_DATAPLANE_URL}
+func (ts *Service) getRudderConfig() RudderConfig {
+	if !strings.Contains(rudderKey, "placeholder") && !strings.Contains(rudderDataplaneURL, "placeholder") {
+		return RudderConfig{rudderKey, rudderDataplaneURL}
 	} else if os.Getenv("RUDDER_KEY") != "" && os.Getenv("RUDDER_DATAPLANE_URL") != "" {
 		return RudderConfig{os.Getenv("RUDDER_KEY"), os.Getenv("RUDDER_DATAPLANE_URL")}
 	} else {
@@ -61,17 +57,18 @@ func (ts *TelemetryService) getRudderConfig() RudderConfig {
 	}
 }
 
-func (ts *TelemetryService) sendDailyTelemetry(override bool) {
+func (ts *Service) sendDailyTelemetry(override bool) {
 	config := ts.getRudderConfig()
-	if (config.DataplaneUrl != "" && config.RudderKey != "") || override {
-		ts.initRudder(config.DataplaneUrl, config.RudderKey)
+	if (config.DataplaneURL != "" && config.RudderKey != "") || override {
+		ts.initRudder(config.DataplaneURL, config.RudderKey)
+
 		for name, tracker := range ts.trackers {
 			ts.sendTelemetry(name, tracker())
 		}
 	}
 }
 
-func (ts *TelemetryService) sendTelemetry(event string, properties map[string]interface{}) {
+func (ts *Service) sendTelemetry(event string, properties map[string]interface{}) {
 	if ts.rudderClient != nil {
 		var context *rudder.Context
 		ts.rudderClient.Enqueue(rudder.Track{
@@ -83,13 +80,13 @@ func (ts *TelemetryService) sendTelemetry(event string, properties map[string]in
 	}
 }
 
-func (ts *TelemetryService) initRudder(endpoint string, rudderKey string) {
+func (ts *Service) initRudder(endpoint string, rudderKey string) {
 	if ts.rudderClient == nil {
 		config := rudder.Config{}
 		config.Logger = rudder.StdLogger(ts.log)
 		config.Endpoint = endpoint
 		// For testing
-		if endpoint != RUDDER_DATAPLANE_URL {
+		if endpoint != rudderDataplaneURL {
 			config.Verbose = true
 			config.BatchSize = 1
 		}
@@ -106,7 +103,7 @@ func (ts *TelemetryService) initRudder(endpoint string, rudderKey string) {
 	}
 }
 
-func (ts *TelemetryService) doTelemetryIfNeeded(firstRun time.Time) {
+func (ts *Service) doTelemetryIfNeeded(firstRun time.Time) {
 	hoursSinceFirstServerRun := time.Since(firstRun).Hours()
 	// Send once every 10 minutes for the first hour
 	// Send once every hour thereafter for the first 12 hours
@@ -120,21 +117,21 @@ func (ts *TelemetryService) doTelemetryIfNeeded(firstRun time.Time) {
 	}
 }
 
-func (ts *TelemetryService) RunTelemetryJob(firstRun int64) {
+func (ts *Service) RunTelemetryJob(firstRun int64) {
 	// Send on boot
 	ts.doTelemetry()
 	scheduler.CreateRecurringTask("Telemetry", func() {
 		ts.doTelemetryIfNeeded(time.Unix(0, firstRun*int64(time.Millisecond)))
-	}, time.Minute*10)
+	}, timeBetweenTelemetryChecks)
 }
 
-func (ts *TelemetryService) doTelemetry() {
+func (ts *Service) doTelemetry() {
 	ts.timestampLastTelemetrySent = time.Now()
 	ts.sendDailyTelemetry(false)
 }
 
 // Shutdown closes the telemetry client.
-func (ts *TelemetryService) Shutdown() error {
+func (ts *Service) Shutdown() error {
 	if ts.rudderClient != nil {
 		return ts.rudderClient.Close()
 	}

server/web/webserver.go

@@ -53,19 +53,23 @@ func (ws *WebServer) Start() error {
 
 	urlPort := fmt.Sprintf(`:%d`, ws.port)
 	var isSSL = ws.ssl && fileExists("./cert/cert.pem") && fileExists("./cert/key.pem")
+
 	if isSSL {
 		log.Println("https server started on ", urlPort)
 		err := http.ListenAndServeTLS(urlPort, "./cert/cert.pem", "./cert/key.pem", nil)
 		if err != nil {
 			return err
 		}
+
 		return nil
 	}
+
 	log.Println("http server started on ", urlPort)
 	err := http.ListenAndServe(urlPort, nil)
 	if err != nil {
 		return err
 	}
+
 	return nil
 }
 
@@ -75,5 +79,6 @@ func fileExists(path string) bool {
 	if os.IsNotExist(err) {
 		return false
 	}
+
 	return err == nil
 }

server/ws/websockets.go

@@ -11,27 +11,29 @@ import (
 )
 
 // RegisterRoutes registeres routes
-func (ws *WSServer) RegisterRoutes(r *mux.Router) {
+func (ws *Server) RegisterRoutes(r *mux.Router) {
 	r.HandleFunc("/ws/onchange", ws.handleWebSocketOnChange)
 }
 
 // AddListener adds a listener for a block's change
-func (ws *WSServer) AddListener(client *websocket.Conn, blockIDs []string) {
+func (ws *Server) AddListener(client *websocket.Conn, blockIDs []string) {
 	ws.mu.Lock()
 	for _, blockID := range blockIDs {
 		if ws.listeners[blockID] == nil {
 			ws.listeners[blockID] = []*websocket.Conn{}
 		}
+
 		ws.listeners[blockID] = append(ws.listeners[blockID], client)
 	}
 	ws.mu.Unlock()
 }
 
 // RemoveListener removes a webSocket listener from all blocks
-func (ws *WSServer) RemoveListener(client *websocket.Conn) {
+func (ws *Server) RemoveListener(client *websocket.Conn) {
 	ws.mu.Lock()
 	for key, clients := range ws.listeners {
 		var listeners = []*websocket.Conn{}
+
 		for _, existingClient := range clients {
 			if client != existingClient {
 				listeners = append(listeners, existingClient)
@@ -43,7 +45,7 @@ func (ws *WSServer) RemoveListener(client *websocket.Conn) {
 }
 
 // RemoveListenerFromBlocks removes a webSocket listener from a set of block
-func (ws *WSServer) RemoveListenerFromBlocks(client *websocket.Conn, blockIDs []string) {
+func (ws *Server) RemoveListenerFromBlocks(client *websocket.Conn, blockIDs []string) {
 	ws.mu.Lock()
 
 	for _, blockID := range blockIDs {
@@ -58,6 +60,7 @@ func (ws *WSServer) RemoveListenerFromBlocks(client *websocket.Conn, blockIDs []
 			if client == listener {
 				newListeners := append(listeners[:index], listeners[index+1:]...)
 				ws.listeners[blockID] = newListeners
+
 				break
 			}
 		}
@@ -67,7 +70,7 @@ func (ws *WSServer) RemoveListenerFromBlocks(client *websocket.Conn, blockIDs []
 }
 
 // GetListeners returns the listeners to a blockID's changes
-func (ws *WSServer) GetListeners(blockID string) []*websocket.Conn {
+func (ws *Server) GetListeners(blockID string) []*websocket.Conn {
 	ws.mu.Lock()
 	listeners := ws.listeners[blockID]
 	ws.mu.Unlock()
@@ -75,16 +78,16 @@ func (ws *WSServer) GetListeners(blockID string) []*websocket.Conn {
 	return listeners
 }
 
-// WSServer is a WebSocket server
-type WSServer struct {
+// Server is a WebSocket server
+type Server struct {
 	upgrader  websocket.Upgrader
 	listeners map[string][]*websocket.Conn
 	mu        sync.RWMutex
 }
 
-// NewWSServer creates a new WSServer
-func NewWSServer() *WSServer {
-	return &WSServer{
+// NewServer creates a new Server
+func NewServer() *Server {
+	return &Server{
 		listeners: make(map[string][]*websocket.Conn),
 		upgrader: websocket.Upgrader{
 			CheckOrigin: func(r *http.Request) bool {
@@ -106,7 +109,7 @@ type WebsocketCommand struct {
 	BlockIDs []string `json:"blockIds"`
 }
 
-func (ws *WSServer) handleWebSocketOnChange(w http.ResponseWriter, r *http.Request) {
+func (ws *Server) handleWebSocketOnChange(w http.ResponseWriter, r *http.Request) {
 	// Upgrade initial GET request to a websocket
 	client, err := ws.upgrader.Upgrade(w, r, nil)
 	if err != nil {
@@ -133,6 +136,7 @@ func (ws *WSServer) handleWebSocketOnChange(w http.ResponseWriter, r *http.Reque
 		if err != nil {
 			log.Printf("ERROR WebSocket onChange, client: %s, err: %v", client.RemoteAddr(), err)
 			ws.RemoveListener(client)
+
 			break
 		}
 
@@ -141,6 +145,7 @@ func (ws *WSServer) handleWebSocketOnChange(w http.ResponseWriter, r *http.Reque
 		if err != nil {
 			// handle this error
 			log.Printf(`ERROR webSocket parsing command JSON: %v`, string(p))
+
 			continue
 		}
 
@@ -148,9 +153,11 @@ func (ws *WSServer) handleWebSocketOnChange(w http.ResponseWriter, r *http.Reque
 		case "ADD":
 			log.Printf(`Command: Add blockID: %v, client: %s`, command.BlockIDs, client.RemoteAddr())
 			ws.AddListener(client, command.BlockIDs)
+
 		case "REMOVE":
 			log.Printf(`Command: Remove blockID: %v, client: %s`, command.BlockIDs, client.RemoteAddr())
 			ws.RemoveListenerFromBlocks(client, command.BlockIDs)
+
 		default:
 			log.Printf(`ERROR webSocket command, invalid action: %v`, command.Action)
 		}
@@ -158,7 +165,7 @@ func (ws *WSServer) handleWebSocketOnChange(w http.ResponseWriter, r *http.Reque
 }
 
 // BroadcastBlockChangeToWebsocketClients broadcasts change to clients
-func (ws *WSServer) BroadcastBlockChangeToWebsocketClients(blockIDs []string) {
+func (ws *Server) BroadcastBlockChangeToWebsocketClients(blockIDs []string) {
 	for _, blockID := range blockIDs {
 		listeners := ws.GetListeners(blockID)
 		log.Printf("%d listener(s) for blockID: %s", len(listeners), blockID)
@@ -168,6 +175,7 @@ func (ws *WSServer) BroadcastBlockChangeToWebsocketClients(blockIDs []string) {
 				Action:  "UPDATE_BLOCK",
 				BlockID: blockID,
 			}
+
 			for _, listener := range listeners {
 				log.Printf("Broadcast change, blockID: %s, remoteAddr: %s", blockID, listener.RemoteAddr())
 				err := listener.WriteJSON(message)