1 files changed, 99 insertions, 0 deletions
diff --git a/util/logger.go b/util/logger.go
new file mode 100644
index 0000000..94d0563
--- /dev/null
+++ b/util/logger.go
@@ -0,0 +1,99 @@
+package util
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"os"
+)
+
+type MultiHandler struct {
+	handlers []slog.Handler
+}
+
+func NewMultiHandler(handlers ...slog.Handler) *MultiHandler {
+	return &MultiHandler{handlers: handlers}
+}
+
+func (m *MultiHandler) Enabled(ctx context.Context, level slog.Level) bool {
+	for _, h := range m.handlers {
+		if h.Enabled(ctx, level) {
+			return true
+		}
+	}
+	return false
+}
+
+func (m *MultiHandler) Handle(ctx context.Context, record slog.Record) error {
+	for _, h := range m.handlers {
+		_ = h.Handle(ctx, record) // Process each handler, ignoring errors
+	}
+	return nil
+}
+
+func (m *MultiHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
+	newHandlers := make([]slog.Handler, len(m.handlers))
+	for i, h := range m.handlers {
+		newHandlers[i] = h.WithAttrs(attrs)
+	}
+	return &MultiHandler{handlers: newHandlers}
+}
+
+func (m *MultiHandler) WithGroup(name string) slog.Handler {
+	newHandlers := make([]slog.Handler, len(m.handlers))
+	for i, h := range m.handlers {
+		newHandlers[i] = h.WithGroup(name)
+	}
+	return &MultiHandler{handlers: newHandlers}
+}
+
+type options struct {
+	logName     string
+	stdoutLevel slog.Level
+	fileLevel   slog.Level
+}
+
+func SetupLogger(opts ...func(*options)) (*os.File, error) {
+	o := options{
+		logName:     "logs/Default.log",
+		stdoutLevel: slog.LevelInfo,
+		fileLevel:   slog.LevelDebug,
+	}
+
+	for _, opt := range opts {
+		opt(&o)
+	}
+
+	logFile, err := os.OpenFile(o.logName, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o666)
+	if err != nil {
+		return nil, fmt.Errorf("no file opened for logs: %v", err)
+	}
+
+	stdoutHandler := slog.NewTextHandler(os.Stdout,
+		&slog.HandlerOptions{Level: o.stdoutLevel})
+	fileHandler := slog.NewJSONHandler(logFile,
+		&slog.HandlerOptions{Level: o.fileLevel})
+
+	logger := slog.New(NewMultiHandler(stdoutHandler, fileHandler))
+	slog.SetDefault(logger)
+
+	return logFile, err
+}
+
+func WithLogName(name string) func(*options) {
+	return func(o *options) {
+		o.logName = name
+	}
+}
+
+func WithStdoutLevel(level slog.Level) func(*options) {
+	return func(o *options) {
+		o.stdoutLevel = level
+	}
+}
+
+func WithFileLevel(level slog.Level) func(*options) {
+	return func(o *options) {
+		o.fileLevel = level
+	}
+}