add reset option

internal/converter/core.go

@@ -100,6 +100,7 @@ func (c *Converter) InitParse() {
 	c.AddSection("Default config")
 	c.AddBoolParam(&c.Options.Show, "show", false, "Show your default parameters")
 	c.AddBoolParam(&c.Options.Save, "save", false, "Save your parameters as default")
+	c.AddBoolParam(&c.Options.Reset, "reset", false, "Reset your parameters to default")
 
 	c.AddSection("Other")
 	c.AddBoolParam(&c.Options.Help, "help", false, "Show this help message")

internal/converter/options/core.go

@@ -34,8 +34,9 @@ type Options struct {
 	LimitMb             int    `yaml:"limit_mb"`
 
 	// Default Config
-	Show bool `yaml:"-"`
-	Save bool `yaml:"-"`
+	Show  bool `yaml:"-"`
+	Save  bool `yaml:"-"`
+	Reset bool `yaml:"-"`
 
 	// Other
 	Help bool `yaml:"-"`
@@ -151,6 +152,11 @@ func (o *Options) ShowDefault() string {
 	)
 }
 
+func (o *Options) ResetDefault() error {
+	New().SaveDefault()
+	return o.LoadDefault()
+}
+
 func (o *Options) SaveDefault() error {
 	f, err := os.Create(o.FileName())
 	if err != nil {

main.go

@@ -33,6 +33,18 @@ func main() {
 		return
 	}
 
+	if cmd.Options.Reset {
+		cmd.Options.ResetDefault()
+		fmt.Fprintf(
+			os.Stderr,
+			"%s%s\n\nReset default to %s\n",
+			cmd.Options.Header(),
+			cmd.Options.ShowDefault(),
+			cmd.Options.FileName(),
+		)
+		return
+	}
+
 	if err := cmd.Validate(); err != nil {
 		cmd.Fatal(err)
 	}