"""Router Agent 命令行交互客户端

用法：
    uv run python chat_with_router.py
"""

import asyncio
import sys
import httpx

# 修复 Windows 控制台编码问题
if sys.platform == 'win32':
    import io
    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8')

BASE_URL = "http://127.0.0.1:8001"


async def chat_loop():
    """交互式对话循环"""
    print("=" * 60)
    print("Router Agent - 命令行客户端")
    print("=" * 60)
    print("提示：")
    print("  - 输入你的问题或请求")
    print("  - 输入 'exit' 或 'quit' 退出")
    print("  - 输入 'help' 查看可用命令")
    print("-" * 60)

    session_id = None

    async with httpx.AsyncClient(timeout=120.0) as client:
        # 检查服务是否可用
        try:
            await client.get(f"{BASE_URL}/health")
        except Exception as e:
            print(f"\n错误: 无法连接到 Router Agent 服务")
            print(f"请确保服务已启动: uv run python -m tool_agent")
            print(f"详细错误: {e}")
            return

        while True:
            try:
                # 读取用户输入
                user_input = await asyncio.to_thread(input, "\n[You] > ")
                user_input = user_input.strip()

                if not user_input:
                    continue

                # 处理退出命令
                if user_input.lower() in ("exit", "quit"):
                    print("\n再见！")
                    break

                # 处理帮助命令
                if user_input.lower() == "help":
                    print("\n可用命令：")
                    print("  list              - 列出所有工具")
                    print("  search <关键词>   - 搜索工具")
                    print("  status            - 查看工具状态")
                    print("  exit/quit         - 退出")
                    print("\n你也可以直接用自然语言提问，例如：")
                    print("  - 我需要一个图片压缩工具")
                    print("  - image_stitcher 怎么用？")
                    print("  - 帮我调用 XXX 工具")
                    continue

                # 发送消息给 Router Agent
                print("\n[Router Agent] 思考中...")
                response = await client.post(
                    f"{BASE_URL}/chat",
                    json={
                        "message": user_input,
                        "session_id": session_id
                    }
                )

                if response.status_code == 200:
                    result = response.json()
                    session_id = result.get("session_id")
                    print(f"\n[Router Agent]\n{result['response']}")
                else:
                    print(f"\n错误: {response.status_code} - {response.text}")

            except KeyboardInterrupt:
                print("\n\n按 Ctrl+C 退出，或输入 'exit'")
            except EOFError:
                print("\n\n再见！")
                break
            except Exception as e:
                print(f"\n错误: {e}")


if __name__ == "__main__":
    asyncio.run(chat_loop())