feat(tui): modes

packages/tui/internal/app/app.go

@@ -23,11 +23,15 @@ import (
 
 type App struct {
 	Info          opencode.App
+	Modes         []opencode.Mode
+	Providers     []opencode.Provider
 	Version       string
 	StatePath     string
 	Config        *opencode.Config
 	Client        *opencode.Client
 	State         *config.State
+	ModeIndex     int
+	Mode          *opencode.Mode
 	Provider      *opencode.Provider
 	Model         *opencode.Model
 	Session       *opencode.Session
@@ -64,6 +68,7 @@ func New(
 	ctx context.Context,
 	version string,
 	appInfo opencode.App,
+	modes []opencode.Mode,
 	httpClient *opencode.Client,
 	model *string,
 	prompt *string,
@@ -87,14 +92,33 @@ func New(
 		config.SaveState(appStatePath, appState)
 	}
 
+	if appState.ModeModel == nil {
+		appState.ModeModel = make(map[string]config.ModeModel)
+	}
+
 	if configInfo.Theme != "" {
 		appState.Theme = configInfo.Theme
 	}
 
-	if configInfo.Model != "" {
-		splits := strings.Split(configInfo.Model, "/")
-		appState.Provider = splits[0]
-		appState.Model = strings.Join(splits[1:], "/")
+	var modeIndex int
+	var mode *opencode.Mode
+	modeName := "build"
+	if appState.Mode != "" {
+		modeName = appState.Mode
+	}
+	for i, m := range modes {
+		if m.Name == modeName {
+			modeIndex = i
+			break
+		}
+	}
+	mode = &modes[modeIndex]
+
+	if mode.Model.ModelID != "" {
+		appState.ModeModel[mode.Name] = config.ModeModel{
+			ProviderID: mode.Model.ProviderID,
+			ModelID:    mode.Model.ModelID,
+		}
 	}
 
 	if err := theme.LoadThemesFromDirectories(
@@ -119,11 +143,14 @@ func New(
 
 	app := &App{
 		Info:          appInfo,
+		Modes:         modes,
 		Version:       version,
 		StatePath:     appStatePath,
 		Config:        configInfo,
 		State:         appState,
 		Client:        httpClient,
+		ModeIndex:     modeIndex,
+		Mode:          mode,
 		Session:       &opencode.Session{},
 		Messages:      []opencode.MessageUnion{},
 		Commands:      commands.LoadFromConfig(configInfo),
@@ -162,6 +189,45 @@ func (a *App) SetClipboard(text string) tea.Cmd {
 	return tea.Sequence(cmds...)
 }
 
+func (a *App) SwitchMode() (*App, tea.Cmd) {
+	a.ModeIndex++
+	if a.ModeIndex >= len(a.Modes) {
+		a.ModeIndex = 0
+	}
+	a.Mode = &a.Modes[a.ModeIndex]
+
+	modelID := a.Mode.Model.ModelID
+	providerID := a.Mode.Model.ProviderID
+	if modelID == "" {
+		if model, ok := a.State.ModeModel[a.Mode.Name]; ok {
+			modelID = model.ModelID
+			providerID = model.ProviderID
+		}
+	}
+
+	if modelID != "" {
+		for _, provider := range a.Providers {
+			if provider.ID == providerID {
+				a.Provider = &provider
+				for _, model := range provider.Models {
+					if model.ID == modelID {
+						a.Model = &model
+						break
+					}
+				}
+				break
+			}
+		}
+	}
+
+	a.State.Mode = a.Mode.Name
+
+	return a, func() tea.Msg {
+		a.SaveState()
+		return nil
+	}
+}
+
 func (a *App) InitializeProvider() tea.Cmd {
 	providersResponse, err := a.Client.Config.Providers(context.Background())
 	if err != nil {
@@ -198,6 +264,14 @@ func (a *App) InitializeProvider() tea.Cmd {
 		return nil
 	}
 
+	a.Providers = providers
+
+	// retains backwards compatibility with old state format
+	if model, ok := a.State.ModeModel[a.State.Mode]; ok {
+		a.State.Provider = model.ProviderID
+		a.State.Model = model.ModelID
+	}
+
 	var currentProvider *opencode.Provider
 	var currentModel *opencode.Model
 	for _, provider := range providers {
@@ -322,10 +396,14 @@ func (a *App) CompactSession(ctx context.Context) tea.Cmd {
 			a.compactCancel = nil
 		}()
 
-		_, err := a.Client.Session.Summarize(compactCtx, a.Session.ID, opencode.SessionSummarizeParams{
-			ProviderID: opencode.F(a.Provider.ID),
-			ModelID:    opencode.F(a.Model.ID),
-		})
+		_, err := a.Client.Session.Summarize(
+			compactCtx,
+			a.Session.ID,
+			opencode.SessionSummarizeParams{
+				ProviderID: opencode.F(a.Provider.ID),
+				ModelID:    opencode.F(a.Model.ID),
+			},
+		)
 		if err != nil {
 			if compactCtx.Err() != context.Canceled {
 				slog.Error("Failed to compact session", "error", err)
@@ -417,6 +495,7 @@ func (a *App) SendChatMessage(
 			Parts:      opencode.F(parts),
 			ProviderID: opencode.F(a.Provider.ID),
 			ModelID:    opencode.F(a.Model.ID),
+			Mode:       opencode.F(a.Mode.Name),
 		})
 		if err != nil {
 			errormsg := fmt.Sprintf("failed to send message: %v", err)