BAMS initial project structure

backend/internal/logger/logger.go

@@ -0,0 +1,60 @@
+package logger
+
+import (
+	"log"
+	"os"
+)
+
+type Logger struct {
+	level string
+	log   *log.Logger
+}
+
+func New(level string) *Logger {
+	return &Logger{
+		level: level,
+		log:   log.New(os.Stdout, "[BAMS] ", log.LstdFlags|log.Lshortfile),
+	}
+}
+
+func (l *Logger) Info(msg string, fields ...interface{}) {
+	if l.shouldLog("info") {
+		l.log.Printf("[INFO] %s %v", msg, fields)
+	}
+}
+
+func (l *Logger) Error(msg string, fields ...interface{}) {
+	if l.shouldLog("error") {
+		l.log.Printf("[ERROR] %s %v", msg, fields)
+	}
+}
+
+func (l *Logger) Debug(msg string, fields ...interface{}) {
+	if l.shouldLog("debug") {
+		l.log.Printf("[DEBUG] %s %v", msg, fields)
+	}
+}
+
+func (l *Logger) Warn(msg string, fields ...interface{}) {
+	if l.shouldLog("warn") {
+		l.log.Printf("[WARN] %s %v", msg, fields)
+	}
+}
+
+func (l *Logger) shouldLog(level string) bool {
+	levels := map[string]int{
+		"debug": 0,
+		"info":  1,
+		"warn":  2,
+		"error": 3,
+	}
+	currentLevel, ok := levels[l.level]
+	if !ok {
+		currentLevel = 1
+	}
+	msgLevel, ok := levels[level]
+	if !ok {
+		return true
+	}
+	return msgLevel >= currentLevel
+}