Use file based logging with log rotation

file based logging might make it easier to load logs for debugging from the UI

README.md

@@ -15,6 +15,8 @@ Connect applications like [Damus](https://damus.io/) or [Amethyst](https://linkt
 
 ### Requirements
 
+- Go 1.21 or higher
+
 The application has no runtime dependencies. (simple Go executable).
 
 As data storage SQLite is used.

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/labstack/echo/v4 v4.10.2
 	github.com/nbd-wtf/go-nostr v0.25.5
 	github.com/nbd-wtf/ln-decodepay v1.11.1
+	github.com/orandin/lumberjackrus v1.0.1
 	github.com/stretchr/testify v1.8.2
 	github.com/wailsapp/wails/v2 v2.7.1
 	google.golang.org/grpc v1.53.0

go.sum

@@ -656,6 +656,8 @@ github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAl
 github.com/onsi/gomega v1.18.1 h1:M1GfJqGRrBrrGGsbxzV5dqM2U2ApXefZCQpkukxYRLE=
 github.com/onsi/gomega v1.18.1/go.mod h1:0q+aL8jAiMXy9hbwj2mr5GziHiwhAIQpFmmtT5hitRs=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
+github.com/orandin/lumberjackrus v1.0.1 h1:7ysDQ0MHD79zIFN9/EiDHjUcgopNi5ehtxFDy8rUkWo=
+github.com/orandin/lumberjackrus v1.0.1/go.mod h1:xYLt6H8W93pKnQgUQaxsApS0Eb4BwHLOkxk5DVzf5H0=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pierrec/lz4/v4 v4.0.3/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=

main.go

@@ -16,6 +16,7 @@ import (
 	"github.com/kelseyhightower/envconfig"
 	"github.com/nbd-wtf/go-nostr"
 	"github.com/nbd-wtf/go-nostr/nip19"
+	"github.com/orandin/lumberjackrus"
 	log "github.com/sirupsen/logrus"
 	"gorm.io/gorm"
 )
@@ -93,11 +94,34 @@ func NewService(ctx context.Context) *Service {
 
 	logger := log.New()
 	logger.SetFormatter(&log.JSONFormatter{})
-	logger.SetOutput(os.Stdout)
 	logger.SetLevel(log.InfoLevel)
+
+	hook, err := lumberjackrus.NewHook(
+		&lumberjackrus.LogFile{
+			Filename: "nwc.general.log",
+		},
+		log.InfoLevel,
+		&log.JSONFormatter{},
+		&lumberjackrus.LogFileOpts{
+			log.InfoLevel: &lumberjackrus.LogFile{
+				Filename:   "./log/nwc-info.log",
+				MaxAge:     1,
+				MaxBackups: 2,
+			},
+			log.ErrorLevel: &lumberjackrus.LogFile{
+				Filename:   "./log/nwc-error.log",
+				MaxAge:     1,
+				MaxBackups: 2,
+			},
+		},
+	)
+	if err != nil {
+		log.Fatalf("Error log setup: %v", err)
+	}
+	logger.AddHook(hook)
 	svc.Logger = logger
 
-	logger.Infof("Starting nostr-wallet-connect. npub: %s hex: %s", npub, identityPubkey)
+	svc.Logger.Infof("Starting nostr-wallet-connect. npub: %s hex: %s", npub, identityPubkey)
 
 	err = svc.launchLNBackend()
 	if err != nil {