feat: Enhance logging setup with Logrus integration and custom formatter

config/database.go

@@ -52,3 +52,4 @@ func CloseDatabaseConnection(db *gorm.DB) {
 	}
 	dbSQL.Close()
 }
+

config/logger.go

@@ -1,11 +1,13 @@
 package config
 
 import (
+	"encoding/json"
 	"log"
 	"os"
 	"strings"
 	"time"
 
+	"github.com/sirupsen/logrus"
 	"gorm.io/gorm/logger"
 )
 
@@ -13,6 +15,10 @@ const (
 	LOG_DIR = "./config/logs/query_log"
 )
 
+type GroupedFieldsFormatter struct {
+	TimestampFormat string
+}
+
 func SetupLogger() logger.Interface {
 	err := os.MkdirAll(LOG_DIR, os.ModePerm)
 	if err != nil {
@@ -39,3 +45,50 @@ func SetupLogger() logger.Interface {
 
 	return newLogger
 }
+
+func SetupLoggerLogrus() *logrus.Logger {
+	err := os.MkdirAll(LOG_DIR, os.ModePerm)
+	if err != nil {
+		log.Fatalf("failed to create log directory: %v", err)
+	}
+
+	currentMonth := time.Now().Format("January")
+	currentMonth = strings.ToLower(currentMonth)
+	logFileName := currentMonth + "_app.log" // atau "_logrus.log" sesuai kebutuhan
+
+	logFile, err := os.OpenFile(LOG_DIR+"/"+logFileName, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
+	if err != nil {
+		log.Fatalf("failed to open log file: %v", err)
+	}
+
+	logger := logrus.New()
+	logger.SetFormatter(&GroupedFieldsFormatter{TimestampFormat: time.RFC3339})
+	logger.SetOutput(logFile)
+	logLevel := strings.ToLower(os.Getenv("LOG_LEVEL"))
+	if logLevel == "production" {
+		logger.SetLevel(logrus.WarnLevel)
+	} else {
+		logger.SetLevel(logrus.TraceLevel)
+	}
+	return logger
+}
+
+func (f *GroupedFieldsFormatter) Format(entry *logrus.Entry) ([]byte, error) {
+	data := make(map[string]interface{})
+	fields := make(map[string]interface{})
+
+	// Pisahkan field bawaan dan custom
+	for k, v := range entry.Data {
+		fields[k] = v
+	}
+	data["fields"] = fields
+	data["level"] = entry.Level.String()
+	data["msg"] = entry.Message
+	data["time"] = entry.Time.Format(f.TimestampFormat)
+
+	serialized, err := json.Marshal(data)
+	if err != nil {
+		return nil, err
+	}
+	return append(serialized, '\n'), nil
+}