command_chat

var ChatCmd = &cli.Command{
	Name:  "chat",
	Usage: "Start an interactive chat session with the AI assistant",
	Description: `The chat command allows you to have an interactive conversation with the AI assistant.

Type your messages and press Enter to send them. The assistant will respond in real-time.
Type /exit to end the session.`,
	MaxArgs: cli.NoArgs,
	Flags: []cli.Flag{
		&cli.StringFlag{
			Name:    "server",
			Aliases: []string{"s"},
			Usage:   "The address of the remote server to connect to.",
			EnvVars: []string{config.CONFIG_ENV_PREFIX + "_SERVER"},
		},
		&cli.StringFlag{
			Name:    "token",
			Aliases: []string{"t"},
			Usage:   "The token to use for authentication.",
			EnvVars: []string{config.CONFIG_ENV_PREFIX + "_TOKEN"},
		},
		&cli.BoolFlag{
			Name:         "tls-skip-verify",
			Usage:        "Skip TLS verification when talking to server.",
			ConfigPath:   []string{"tls.skip_verify"},
			EnvVars:      []string{config.CONFIG_ENV_PREFIX + "_TLS_SKIP_VERIFY"},
			DefaultValue: true,
		},
		&cli.StringFlag{
			Name:         "alias",
			Aliases:      []string{"a"},
			Usage:        "The server alias to use.",
			DefaultValue: "default",
		},
	},
	Run: func(ctx context.Context, cmd *cli.Command) error {
		cfg := cmdutil.GetServerAddr(cmd)
		if cfg == nil {
			return fmt.Errorf("no server configured")
		}

		client, err := rest.NewClient(cfg.HttpServer, cfg.ApiToken, cmd.GetBool("tls-skip-verify"))
		if err != nil {
			return fmt.Errorf("failed to create REST client: %w", err)
		}
		client.SetTimeout(5 * time.Minute)
		client.SetHeader("X-Knot-Api-Version", "2025-03-10")

		var t *tui.TUI
		var messages []ChatMessage

		t = tui.New(tui.Config{
			StatusLeft:  cfg.HttpServer,
			StatusRight: "Ctrl+C to exit",
			Commands: []*tui.Command{
				{
					Name:        "exit",
					Description: "Exit the chat session",
					Handler:     func(_ string) { t.Exit() },
				},
				{
					Name:        "clear",
					Description: "Clear conversation history",
					Handler: func(_ string) {
						messages = nil
						t.ClearOutput()
					},
				},
			},
			OnEscape: func() {
				t.StopStreaming()
			},
			OnSubmit: func(text string) {
				t.AddMessage(tui.RoleUser, text)
				messages = append(messages, ChatMessage{
					Role:      "user",
					Content:   text,
					Timestamp: time.Now().Unix(),
				})

				t.StartStreaming()
				t.StartSpinner("Thinking...")

				assistantMsg, err := sendChatRequest(client, messages, t)
				if err != nil {
					t.StopStreaming()
					t.StopSpinner()
					t.AddMessage(tui.RoleSystem, err.Error())
					return
				}

				assistantMsg = strings.TrimSpace(stripThinkTags(assistantMsg))
				if assistantMsg != "" {
					messages = append(messages, ChatMessage{
						Role:      "assistant",
						Content:   assistantMsg,
						Timestamp: time.Now().Unix(),
					})
				}
			},
		})

		t.AddMessage(tui.RoleSystem, "Connected to "+cfg.HttpServer+". Type /exit to quit.")

		return t.Run(ctx)
	},
}