import { React, h, render } from './plugins.js';
import type { LanguageModelV3, ToolSet } from './plugins.js';
import { ChatApp } from './components.chatapp.js';

export interface IStartChatOptions {
  /** The language model to use */
  model: LanguageModelV3;
  /** System prompt for the agent */
  system?: string;
  /** Tools available to the agent */
  tools?: ToolSet;
  /** Maximum agentic steps per turn */
  maxSteps?: number;
  /** Display name for the model (shown in header/status) */
  modelName?: string;
}

/**
 * Start an interactive chat TUI in the terminal.
 * Returns a promise that resolves when the user exits.
 */
export async function startChat(options: IStartChatOptions): Promise<void> {
  const instance = render(
    h(ChatApp, {
      model: options.model,
      system: options.system,
      tools: options.tools,
      maxSteps: options.maxSteps,
      modelName: options.modelName,
    }),
  );

  await instance.waitUntilExit();
}