some code quality fixes

src/cmd/main.go

@@ -14,9 +14,9 @@ import (
 )
 
 const (
-	defHttpIp   = "0.0.0.0"
-	defHttpPort = "8080"
-	defDbUrl    = "postgres://postgres:12345678@127.0.0.1:5432/egommerce"
+	defHTTPIP   = "0.0.0.0"
+	defHTTPPort = "8080"
+	defDbURL    = "postgres://postgres:12345678@127.0.0.1:5432/egommerce"
 )
 
 func main() {
@@ -24,15 +24,15 @@ func main() {
 		app.Panicf("Error loading .env file")
 	}
 
-	httpAddr := net.JoinHostPort(config.GetEnv("SERVER_IP", defHttpIp), defHttpPort)
-	dbConnStr := config.GetEnv("DATABASE_URL", defDbUrl)
+	httpAddr := net.JoinHostPort(config.GetEnv("SERVER_IP", defHTTPIP), defHTTPPort)
+	dbConnStr := config.GetEnv("DATABASE_URL", defDbURL)
 
 	dbc, err := database.Connect(dbConnStr)
 	if err != nil {
 		app.Panicf("Unable to connect to database: %v\n", err)
 	}
 
-	env := &handler.Env{httpAddr, dbc}
+	env := &handler.Env{Addr: httpAddr, DB: dbc}
 	srv := app.NewServer(env)
 
 	go srv.Start()

src/internal/app/router.go

@@ -13,7 +13,7 @@ func SetupRouter(env *handler.Env) *mux.Router {
 	r.MethodNotAllowedHandler = &handler.MethodNotAllowedHandler{}
 
 	r.Use(PrepareHeadersMiddleware)
-	r.Use(ValidateJsonBodyMiddleware) // probably not needed
+	r.Use(ValidateJSONBodyMiddleware) // probably not needed
 	r.Use(LoggingMiddleware)
 
 	r.Handle("/health", handler.Init(env, handler.HealthCheckHandler)).Methods(http.MethodGet)

src/internal/app/server.go

@@ -61,7 +61,7 @@ func PrepareHeadersMiddleware(next http.Handler) http.Handler {
 	})
 }
 
-func ValidateJsonBodyMiddleware(next http.Handler) http.Handler {
+func ValidateJSONBodyMiddleware(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		buf, _ := io.ReadAll(r.Body)
 		r.Body = io.NopCloser(bytes.NewReader(buf)) // rollack *Request to original state