refactor: extract commands from domain

internal/app/app.go

@@ -211,7 +211,7 @@ func (a *App) Run(ctx context.Context) error {
 // should not continue, i.e. quit.
 func (a *App) handleCommand(
 	ctx context.Context,
-	cmd domain.Command,
+	cmd event.Command,
 	state *domain.AppState,
 	repl *replicator.Actor,
 	containerClient *container.Client,
@@ -219,7 +219,7 @@ func (a *App) handleCommand(
 ) (bool, error) {
 	a.logger.Debug("Command received", "cmd", cmd.Name())
 	switch c := cmd.(type) {
-	case domain.CommandAddDestination:
+	case event.CommandAddDestination:
 		newCfg := a.cfg
 		newCfg.Destinations = append(newCfg.Destinations, config.Destination{
 			Name: c.DestinationName,
@@ -233,7 +233,7 @@ func (a *App) handleCommand(
 		a.cfg = newCfg
 		a.handleConfigUpdate(state)
 		a.eventBus.Send(event.DestinationAddedEvent{URL: c.URL})
-	case domain.CommandRemoveDestination:
+	case event.CommandRemoveDestination:
 		repl.StopDestination(c.URL) // no-op if not live
 		newCfg := a.cfg
 		newCfg.Destinations = slices.DeleteFunc(newCfg.Destinations, func(dest config.Destination) bool {
@@ -247,22 +247,22 @@ func (a *App) handleCommand(
 		a.cfg = newCfg
 		a.handleConfigUpdate(state)
 		a.eventBus.Send(event.DestinationRemovedEvent{URL: c.URL})
-	case domain.CommandStartDestination:
+	case event.CommandStartDestination:
 		if !state.Source.Live {
 			a.eventBus.Send(event.StartDestinationFailedEvent{})
 			break
 		}
 
 		repl.StartDestination(c.URL)
-	case domain.CommandStopDestination:
+	case event.CommandStopDestination:
 		repl.StopDestination(c.URL)
-	case domain.CommandCloseOtherInstance:
+	case event.CommandCloseOtherInstance:
 		if err := closeOtherInstances(ctx, containerClient); err != nil {
 			return false, fmt.Errorf("close other instances: %w", err)
 		}
 
 		startMediaServerC <- struct{}{}
-	case domain.CommandQuit:
+	case event.CommandQuit:
 		return false, nil
 	}
 

internal/event/command.go

@@ -1,4 +1,4 @@
-package domain
+package event
 
 // CommandAddDestination adds a destination.
 type CommandAddDestination struct {

internal/terminal/terminal.go

@@ -42,7 +42,7 @@ const (
 // UI is responsible for managing the terminal user interface.
 type UI struct {
 	eventBus           *event.Bus
-	commandC           chan domain.Command
+	commandC           chan event.Command
 	clipboardAvailable bool
 	configFilePath     string
 	rtmpURL, rtmpsURL  string
@@ -109,7 +109,7 @@ const defaultChanSize = 64
 // StartUI starts the terminal user interface.
 func StartUI(ctx context.Context, params StartParams) (*UI, error) {
 	chanSize := cmp.Or(params.ChanSize, defaultChanSize)
-	commandCh := make(chan domain.Command, chanSize)
+	commandCh := make(chan event.Command, chanSize)
 
 	app := tview.NewApplication()
 
@@ -272,7 +272,7 @@ func (ui *UI) renderAboutView() {
 }
 
 // C returns a channel that receives commands from the user interface.
-func (ui *UI) C() <-chan domain.Command {
+func (ui *UI) C() <-chan event.Command {
 	return ui.commandC
 }
 
@@ -425,9 +425,9 @@ func (ui *UI) handleOtherInstanceDetected(event.OtherInstanceDetectedEvent) {
 		false,
 		func(buttonIndex int, _ string) {
 			if buttonIndex == 0 {
-				ui.commandC <- domain.CommandCloseOtherInstance{}
+				ui.commandC <- event.CommandCloseOtherInstance{}
 			} else {
-				ui.commandC <- domain.CommandQuit{}
+				ui.commandC <- event.CommandQuit{}
 			}
 		},
 	)
@@ -457,7 +457,7 @@ func (ui *UI) handleFatalErrorOccurred(evt event.FatalErrorOccurredEvent) {
 		[]string{"Quit"},
 		false,
 		func(int, string) {
-			ui.commandC <- domain.CommandQuit{}
+			ui.commandC <- event.CommandQuit{}
 		},
 	)
 }
@@ -702,7 +702,7 @@ func (ui *UI) handleMediaServerClosed(exitReason string) {
 		SetBackgroundColor(tcell.ColorBlack).
 		SetTextColor(tcell.ColorWhite).
 		SetDoneFunc(func(int, string) {
-			ui.commandC <- domain.CommandQuit{}
+			ui.commandC <- event.CommandQuit{}
 		})
 	modal.SetBorderStyle(tcell.StyleDefault.Background(tcell.ColorBlack).Foreground(tcell.ColorWhite))
 
@@ -873,7 +873,7 @@ func (ui *UI) addDestination() {
 		AddInputField(inputLabelName, "My stream", inputLen, nil, nil).
 		AddInputField(inputLabelURL, "rtmp://", inputLen, nil, nil).
 		AddButton("Add", func() {
-			ui.commandC <- domain.CommandAddDestination{
+			ui.commandC <- event.CommandAddDestination{
 				DestinationName: form.GetFormItemByLabel(inputLabelName).(*tview.InputField).GetText(),
 				URL:             form.GetFormItemByLabel(inputLabelURL).(*tview.InputField).GetText(),
 			}
@@ -931,7 +931,7 @@ func (ui *UI) removeDestination() {
 		false,
 		func(buttonIndex int, _ string) {
 			if buttonIndex == 0 {
-				ui.commandC <- domain.CommandRemoveDestination{URL: url}
+				ui.commandC <- event.CommandRemoveDestination{URL: url}
 			}
 		},
 	)
@@ -1007,12 +1007,12 @@ func (ui *UI) toggleDestination() {
 	switch ss {
 	case startStateNotStarted:
 		ui.urlsToStartState[url] = startStateStarting
-		ui.commandC <- domain.CommandStartDestination{URL: url}
+		ui.commandC <- event.CommandStartDestination{URL: url}
 	case startStateStarting:
 		// do nothing
 		return
 	case startStateStarted:
-		ui.commandC <- domain.CommandStopDestination{URL: url}
+		ui.commandC <- event.CommandStopDestination{URL: url}
 	}
 }
 
@@ -1065,7 +1065,7 @@ func (ui *UI) confirmQuit() {
 		false,
 		func(buttonIndex int, _ string) {
 			if buttonIndex == 0 {
-				ui.commandC <- domain.CommandQuit{}
+				ui.commandC <- event.CommandQuit{}
 			}
 		},
 	)