feat: add debug file (#18)

.gitignore

@@ -5,3 +5,4 @@ cover.out
 tmtop
 dist
 **/.DS_Store
+out.txt

README.md

@@ -110,6 +110,8 @@ This app has 2 modes, use [Tab] button to switch between them:
 If you have issues with the app, try pressing the D button to open the debug panel.
 Most likely, the app cannot connect to one of the hosts it needs to connect.
 If there's something unusual, feel free to report a bug on this repository.
+You can also enable debug logging and write them to file in addition to the debug panel
+by running tmtop with `--verbose --debug-file <path-to-file>`.
 
 Some common errors:
 

cmd/tmtop.go

@@ -45,6 +45,7 @@ func main() {
 	rootCmd.PersistentFlags().DurationVar(&config.UpgradeRefreshRate, "upgrade-refresh-rate", 30*time.Minute, "Upgrades refresh rate")
 	rootCmd.PersistentFlags().DurationVar(&config.BlockTimeRefreshRate, "block-time-refresh-rate", 30*time.Second, "Block time refresh rate")
 	rootCmd.PersistentFlags().StringVar(&config.LCDHost, "lcd-host", "", "LCD API host URL")
+	rootCmd.PersistentFlags().StringVar(&config.DebugFile, "debug-file", "", "Path to file to write debug info/logs to")
 
 	if err := rootCmd.Execute(); err != nil {
 		logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not start application")

pkg/config/config.go

@@ -52,6 +52,7 @@ type Config struct {
 	ChainType             ChainType
 	Verbose               bool
 	DisableEmojis         bool
+	DebugFile             string
 
 	LCDHost string
 }

pkg/logger/logger.go

@@ -15,16 +15,44 @@ func GetDefaultLogger() *zerolog.Logger {
 
 type Writer struct {
 	io.Writer
+	DebugFile  *os.File
 	LogChannel chan string
 }
 
+func NewWriter(logChannel chan string, config configPkg.Config) Writer {
+	writer := Writer{
+		LogChannel: logChannel,
+	}
+
+	if config.DebugFile != "" {
+		debugFile, err := os.OpenFile(config.DebugFile, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0755)
+		if err != nil {
+			panic(err)
+		}
+
+		writer.DebugFile = debugFile
+	}
+
+	return writer
+}
+
 func (w Writer) Write(msg []byte) (int, error) {
 	w.LogChannel <- string(msg)
+
+	if w.DebugFile != nil {
+		if _, err := w.DebugFile.Write(msg); err != nil {
+			return 0, err
+		}
+	}
+
 	return len(msg), nil
 }
 
 func GetLogger(logChannel chan string, config configPkg.Config) *zerolog.Logger {
-	writer := zerolog.ConsoleWriter{Out: Writer{LogChannel: logChannel}, NoColor: true}
+	writer := zerolog.ConsoleWriter{
+		Out:     NewWriter(logChannel, config),
+		NoColor: true,
+	}
 	log := zerolog.New(writer).With().Timestamp().Logger()
 
 	if config.Verbose {