tui: Add setting view with support for changing the current model

pkg/tui/model/model.go

@@ -8,6 +8,7 @@ import (
 	"git.mlow.ca/mlow/lmcli/pkg/api"
 	cmdutil "git.mlow.ca/mlow/lmcli/pkg/cmd/util"
 	"git.mlow.ca/mlow/lmcli/pkg/lmcli"
+	"github.com/charmbracelet/lipgloss"
 )
 
 type LoadedConversation struct {
@@ -21,6 +22,37 @@ type AppModel struct {
 	Conversation  *api.Conversation
 	RootMessages  []api.Message
 	Messages      []api.Message
+	Model         string
+	ProviderName  string
+	Provider      api.ChatCompletionProvider
+}
+
+func NewAppModel(ctx *lmcli.Context, initialConversation *api.Conversation) *AppModel {
+	app := &AppModel{
+		Ctx:          ctx,
+		Conversation: initialConversation,
+		Model:        *ctx.Config.Defaults.Model,
+	}
+
+	if initialConversation == nil {
+		app.NewConversation()
+	}
+
+	model, provider, _, _ := ctx.GetModelProvider(*ctx.Config.Defaults.Model, "")
+	app.Model = model
+	app.ProviderName = provider
+	return app
+}
+
+var (
+	defaultStyle = lipgloss.NewStyle().Faint(true)
+	accentStyle  = defaultStyle.Foreground(lipgloss.Color("6"))
+)
+
+func (a *AppModel) ActiveModel(style lipgloss.Style) string {
+	defaultStyle := style.Inherit(defaultStyle)
+	accentStyle := style.Inherit(accentStyle)
+	return defaultStyle.Render(a.Model) + accentStyle.Render("@") + defaultStyle.Render(a.ProviderName)
 }
 
 type MessageCycleDirection int
@@ -194,7 +226,7 @@ func (a *AppModel) ExecuteToolCalls(toolCalls []api.ToolCall) ([]api.ToolResult,
 }
 
 func (a *AppModel) PromptLLM(messages []api.Message, chatReplyChunks chan api.Chunk, stopSignal chan struct{}) (*api.Message, error) {
-	model, provider, err := a.Ctx.GetModelProvider(*a.Ctx.Config.Defaults.Model)
+	model, _, provider, err := a.Ctx.GetModelProvider(a.Model, a.ProviderName)
 	if err != nil {
 		return nil, err
 	}