initial commit

lib/debug.go

@@ -0,0 +1,62 @@
+package lib
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"runtime"
+	"time"
+)
+
+var debugEnabled = false
+var debugFile = "debug.log"
+var debugLogger *DebugLogger
+
+type DebugLogger struct {
+	file *os.File
+}
+
+func EnableDebug(enable bool) {
+	debugEnabled = enable
+}
+
+func GetDebugLogger() *DebugLogger {
+	if debugLogger == nil {
+		debugLogger = &DebugLogger{}
+		runtime.SetFinalizer(
+			debugLogger, func(logger *DebugLogger) {
+				logger.Close()
+			},
+		)
+
+		if debugEnabled {
+			var err error
+			_, err = os.Stat(debugFile)
+
+			if err != nil {
+				debugLogger.file, _ = os.Create(debugFile)
+			} else {
+				debugLogger.file, _ = os.OpenFile(debugFile, os.O_RDWR, 0644)
+				debugLogger.file.Seek(0, io.SeekEnd)
+			}
+		}
+	}
+
+	return debugLogger
+}
+
+func (l *DebugLogger) Log(msg ...any) {
+	if l.file == nil {
+		return
+	}
+
+	l.file.WriteString(fmt.Sprintln(append([]any{time.Now().Format("2006-01-02 15:04:05")}, msg...)...))
+}
+
+func (l *DebugLogger) Close() error {
+	if l.file == nil {
+		return nil
+	}
+
+	return l.file.Close()
+}