feat: pre-fill config name when updating existing config

When choosing "Update existing config" during snapshot upload, the
config name input is now pre-filled with the existing slug converted
to title case instead of requiring the user to retype it.

Author: fullstackjam

internal/cli/push.go

@@ -89,7 +89,7 @@ func pushSnapshot(data []byte, slug, token, username, apiBase string) error {
 		return fmt.Errorf("parse snapshot: %w", err)
 	}
 
-	name, desc, visibility, err := promptPushDetails()
+	name, desc, visibility, err := promptPushDetails("")
 	if err != nil {
 		return err
 	}
@@ -122,7 +122,7 @@ func pushConfig(data []byte, slug, token, username, apiBase string) error {
 		return fmt.Errorf("invalid config: %w", err)
 	}
 
-	name, desc, visibility, err := promptPushDetails()
+	name, desc, visibility, err := promptPushDetails("")
 	if err != nil {
 		return err
 	}
@@ -256,9 +256,15 @@ func doUpload(url string, body []byte, token, username, slug string) error {
 	return nil
 }
 
-func promptPushDetails() (string, string, string, error) {
+func promptPushDetails(defaultName string) (string, string, string, error) {
 	fmt.Fprintln(os.Stderr)
-	name, err := ui.Input("Config name", "My Mac Setup")
+	var name string
+	var err error
+	if defaultName != "" {
+		name, err = ui.InputWithDefault("Config name", "My Mac Setup", defaultName)
+	} else {
+		name, err = ui.Input("Config name", "My Mac Setup")
+	}
 	if err != nil {
 		return "", "", "", fmt.Errorf("get config name: %w", err)
 	}

internal/cli/snapshot.go

@@ -230,7 +230,12 @@ func uploadSnapshot(snap *snapshot.Snapshot) error {
 		return err
 	}
 
-	configName, configDesc, visibility, err := promptPushDetails()
+	defaultName := ""
+	if updateSlug != "" {
+		defaultName = slugToTitle(updateSlug)
+	}
+
+	configName, configDesc, visibility, err := promptPushDetails(defaultName)
 	if err != nil {
 		return err
 	}
@@ -256,6 +261,17 @@ func uploadSnapshot(snap *snapshot.Snapshot) error {
 	return nil
 }
 
+// slugToTitle converts a URL slug like "my-mac-setup" to "My Mac Setup".
+func slugToTitle(slug string) string {
+	words := strings.Split(slug, "-")
+	for i, w := range words {
+		if len(w) > 0 {
+			words[i] = strings.ToUpper(w[:1]) + w[1:]
+		}
+	}
+	return strings.Join(words, " ")
+}
+
 func promptUpdateOrCreate() (string, error) {
 	source, err := syncpkg.LoadSource()
 	if err != nil || source == nil || source.Username == "" || source.Slug == "" {

internal/ui/ui.go

@@ -212,7 +212,11 @@ func SelectOption(title string, options []string) (string, error) {
 }
 
 func Input(title, placeholder string) (string, error) {
-	var value string
+	return InputWithDefault(title, placeholder, "")
+}
+
+func InputWithDefault(title, placeholder, defaultValue string) (string, error) {
+	value := defaultValue
 
 	form := huh.NewForm(
 		huh.NewGroup(