#!/usr/bin/env node

import { Command } from 'commander';
import { Agent } from './core/agent.js';
import { TerminalUI } from './ui/terminal.js';
import { loadConfig, initConfig } from './utils/config.js';
import { toolRegistry, todoManager, initTaskContext, updateTaskDescription, updateSkillDescription } from './tools/index.js';
import { getPermissionManager, promptPermission } from './permission/index.js';
import { SessionManager } from './session/index.js';
import { agentRegistry } from './agent/index.js';
import { initLSP, shutdownLSP } from './lsp/index.js';
import { getCommandRegistry } from './commands/index.js';
import { getSkillRegistry } from './skills/index.js';
import {
  printServerList,
  installServer,
  installAllServers,
  showServerInfo,
} from './lsp/cli.js';

const program = new Command();

program
  .name('ai-assist')
  .description('AI Terminal Assistant - 终端中的 AI 编程助手')
  .version('1.0.0');

// 初始化命令
program
  .command('init')
  .description('初始化配置（设置 API Key 等）')
  .action(async () => {
    await initConfig();
  });

// LSP 命令组
const lspCommand = program
  .command('lsp')
  .description('语言服务器管理');

lspCommand
  .command('list')
  .description('列出所有语言服务器及其安装状态')
  .action(() => {
    printServerList();
  });

lspCommand
  .command('install [servers...]')
  .description('安装指定的语言服务器')
  .option('-a, --all', '安装所有语言服务器')
  .action(async (servers: string[], options: { all?: boolean }) => {
    if (options.all) {
      await installAllServers();
    } else if (servers.length === 0) {
      console.log('用法: ai-assist lsp install <server> [server2] ...');
      console.log('      ai-assist lsp install --all');
      console.log('\n运行 "ai-assist lsp list" 查看可用的服务器');
    } else {
      for (const server of servers) {
        await installServer(server);
      }
    }
  });

lspCommand
  .command('info <server>')
  .description('显示语言服务器详细信息')
  .action((server: string) => {
    showServerInfo(server);
  });

// 初始化权限系统
function setupPermissions(): void {
  const permissionManager = getPermissionManager();
  permissionManager.setAskCallback(promptPermission);
}

// 单次查询命令
program
  .command('ask <question>')
  .description('单次提问（不进入交互模式）')
  .action(async (question: string) => {
    setupPermissions();
    const config = loadConfig();
    const agent = new Agent(config);

    // 设置工具注册表（支持动态工具发现）
    agent.setRegistry(toolRegistry);

    try {
      await agent.chat(question, (text) => {
        process.stdout.write(text);
      });
      console.log('');
    } catch (error) {
      console.error(
        '错误:',
        error instanceof Error ? error.message : String(error)
      );
      process.exit(1);
    }
  });

// 默认：交互模式
program.action(async () => {
  setupPermissions();
  const config = loadConfig();
  const agent = new Agent(config);

  // 初始化 LSP 系统
  initLSP(process.cwd());

  // 设置工具注册表（支持动态工具发现）
  agent.setRegistry(toolRegistry);

  // 初始化会话管理器（支持会话持久化）
  const sessionManager = new SessionManager();
  await sessionManager.init(process.cwd());
  agent.setSessionManager(sessionManager);

  // 初始化 todoManager（让 todo 工具可以访问会话）
  todoManager.setSessionManager(sessionManager);

  // 初始化 Agent 注册表（加载预设和用户配置）
  await agentRegistry.init(process.cwd());

  // 初始化 Task 工具上下文
  initTaskContext(config, sessionManager);
  updateTaskDescription();

  // 初始化 Skill 注册表
  const skillRegistry = getSkillRegistry();
  await skillRegistry.initialize(process.cwd());
  updateSkillDescription();

  // 初始化 Command 注册表
  const commandRegistry = getCommandRegistry();
  await commandRegistry.initialize(process.cwd());

  // 显示会话恢复信息
  const session = sessionManager.getSession();
  if (session && session.messages.length > 0) {
    console.log(`\n📂 已恢复会话 (${session.messages.length} 条消息)`);
  }

  // 启动终端 UI
  const ui = new TerminalUI(agent);

  // 优雅退出
  process.on('SIGINT', async () => {
    console.log('\n\n👋 再见！');
    await shutdownLSP();
    await sessionManager.close();
    ui.close();
    process.exit(0);
  });

  await ui.start();
});

program.parse();