Initial commit

internal/log/config/log.go

@@ -0,0 +1,14 @@
+package config
+
+import "log/slog"
+
+type Log struct {
+	Level slog.Level
+
+	FilePath string
+
+	TextOutput    bool
+	StdoutEnabled bool
+	FileEnabled   bool
+	FluentEnabled bool
+}

internal/log/module.go

@@ -0,0 +1,56 @@
+package log
+
+import (
+	"log/slog"
+	"os"
+
+	slogmulti "github.com/samber/slog-multi"
+	"go.uber.org/fx"
+
+	"payouts/internal/config"
+)
+
+var Module = fx.Options(
+	fx.Provide(NewLogger),
+)
+
+// Params represents the module input params
+type Params struct {
+	fx.In
+
+	AppConfig *config.App
+}
+
+func NewLogger(p Params) (*slog.Logger, error) {
+	logConfig := p.AppConfig.Log
+	opts := &slog.HandlerOptions{
+		Level: logConfig.Level,
+	}
+
+	handlers := []slog.Handler{}
+	if logConfig.StdoutEnabled {
+		if logConfig.TextOutput {
+			handlers = append(handlers, slog.NewTextHandler(os.Stdout, opts))
+		} else {
+			handlers = append(handlers, slog.NewJSONHandler(os.Stdout, opts))
+		}
+	}
+
+	if logConfig.FileEnabled {
+		file, err := os.OpenFile(logConfig.FilePath, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644)
+		if err != nil {
+			return nil, err
+		}
+
+		if logConfig.TextOutput {
+			handlers = append(handlers, slog.NewTextHandler(file, opts))
+		} else {
+			handlers = append(handlers, slog.NewJSONHandler(file, opts))
+		}
+	}
+
+	logger := slog.New(slogmulti.Fanout(handlers...))
+	slog.SetDefault(logger)
+
+	return logger, nil
+}