"""
通讯录子图 API 调用工具（使用MCP统一接口）
"""
from typing import Dict, Any, Optional, List
from datetime import datetime
from dataclasses import dataclass

from .state import Contact, Email
from ...mcp.mcp_manager import mcp_manager
from ...mcp.adapters import ContactAdapter


@dataclass
class ContactAPIClient:
    """
    通讯录 API 客户端 - 使用MCP统一接口
    
    保持向后兼容，内部使用MCP适配器
    """
    
    def __init__(self, conn=None):
        """
        初始化（使用延迟初始化，MCP在首次使用时初始化）

        Args:
            conn: 数据库连接（保留用于向后兼容）
        """
        self.conn = conn
        self._mcp_initialized = False  # 延迟初始化标志
    
    async def _init_mcp(self):
        """初始化MCP系统（延迟初始化）"""
        if self._mcp_initialized:
            return  # 已初始化，跳过
        if not mcp_manager.get_adapter("contact"):
            # 获取repository（如果有）
            repo = None
            if self.conn:
                try:
                    from ...db.models import ContactRepository
                    repo = ContactRepository(self.conn)
                except Exception:
                    pass

            mcp_manager.register_adapter(ContactAdapter(contact_repo=repo))
            await mcp_manager.initialize()
        self._mcp_initialized = True
    
    async def list_contacts(self, user_id: str = "default") -> List[Contact]:
        """获取联系人列表"""
        await self._init_mcp()
        result = await mcp_manager.execute("contact", "list_contacts", user_id=user_id)
        if result.success:
            return result.data
        return []
    
    async def add_contact(self, user_id: str, contact: Contact) -> bool:
        """添加联系人"""
        await self._init_mcp()
        result = await mcp_manager.execute(
            "contact", "add_contact", 
            user_id=user_id, contact=contact
        )
        return result.success and result.data
    
    async def list_emails(self, user_id: str = "default") -> List[Email]:
        """查询邮件列表"""
        await self._init_mcp()
        result = await mcp_manager.execute("contact", "list_emails", user_id=user_id)
        if result.success:
            return result.data
        return []
    
    async def generate_email_draft(self, query: str) -> Dict[str, str]:
        """生成邮件草稿"""
        await self._init_mcp()
        result = await mcp_manager.execute(
            "contact", "generate_email_draft", query=query
        )
        if result.success:
            return result.data
        return {
            "subject": f"Re: {query}",
            "recipient": "recipient@example.com",
            "body": "你好，\n\n这是一封自动生成的邮件草稿。"
        }
    
    async def send_email(self, user_id: str, recipient: str, subject: str, body: str) -> bool:
        """发送邮件"""
        await self._init_mcp()
        result = await mcp_manager.execute(
            "contact", "send_email",
            user_id=user_id, recipient=recipient, subject=subject, body=body
        )
        return result.success
    
    async def sniff_contacts(self, query: str) -> List[Contact]:
        """智能嗅探联系人"""
        await self._init_mcp()
        result = await mcp_manager.execute(
            "contact", "sniff_contacts", query=query
        )
        if result.success:
            return result.data
        return []
    
    # 保持向后兼容的旧方法
    def list_contacts_mock(self, user_id: str = "default") -> List[Contact]:
        """模拟查询（保留用于向后兼容）"""
        import asyncio
        try:
            return asyncio.run(self.list_contacts(user_id))
        except Exception:
            return []


# 全局单例（保持向后兼容）
contact_api = ContactAPIClient()