Refactor error handling and utility functions; remove deprecated code and improve logging

core/logs/logger.go

@@ -1,3 +1,6 @@
+// Package logs provides a logger setup function that configures the logger based on the environment.
+// It supports different logging levels for development and production environments.
+// It uses the standard library's slog package for structured logging.
 package logs
 
 import (
@@ -5,11 +8,15 @@ import (
 	"os"
 )
 
+// Environment constants for logger setup
 const (
-	envDev  = "dev"
+	// envDev enables development logging with debug level
+	envDev = "dev"
+	// envProd enables production logging with info level
 	envProd = "prod"
 )
 
+// SetupLogger initializes and returns a logger based on the provided environment.
 func SetupLogger(env string) *slog.Logger {
 	var log *slog.Logger
 	switch env {

core/logs/mock.go

@@ -6,30 +6,20 @@ import (
 	"sync"
 )
 
+// MockHandler is a mock implementation of slog.Handler for testing purposes.
 type MockHandler struct {
-	mu   sync.Mutex
+	mu sync.Mutex
+	// Logs stores the log records captured by the handler.
 	Logs []slog.Record
 }
 
-func NewMockHandler() *MockHandler {
-	return &MockHandler{}
-}
-
-func (h *MockHandler) Enabled(_ context.Context, _ slog.Level) bool {
-	return true
-}
-
+func NewMockHandler() *MockHandler                                  { return &MockHandler{} }
+func (h *MockHandler) Enabled(_ context.Context, _ slog.Level) bool { return true }
+func (h *MockHandler) WithAttrs(_ []slog.Attr) slog.Handler         { return h }
+func (h *MockHandler) WithGroup(_ string) slog.Handler              { return h }
 func (h *MockHandler) Handle(_ context.Context, r slog.Record) error {
 	h.mu.Lock()
 	defer h.mu.Unlock()
 	h.Logs = append(h.Logs, r.Clone())
 	return nil
 }
-
-func (h *MockHandler) WithAttrs(_ []slog.Attr) slog.Handler {
-	return h
-}
-
-func (h *MockHandler) WithGroup(_ string) slog.Handler {
-	return h
-}