"""
通讯录适配器
整合MCP、数据库和模拟数据
"""
from typing import Dict, Any, Optional, List
from datetime import datetime
from dataclasses import dataclass

from .base_adapter import BaseAdapter, AdapterResult


@dataclass
class Contact:
    """简单的Contact数据结构（独立版本）"""
    id: str = ""
    name: str = ""
    phone: str = ""
    email: str = ""
    company: str = ""
    position: str = ""
    created_at: str = ""


@dataclass
class Email:
    """简单的Email数据结构（独立版本）"""
    id: str = ""
    subject: str = ""
    sender: str = ""
    recipients: List[str] = None
    date: str = ""
    body: str = ""
    
    def __post_init__(self):
        if self.recipients is None:
            self.recipients = []


class ContactAdapter(BaseAdapter):
    """通讯录适配器"""
    
    name = "contact"
    description = "通讯录管理，支持MCP邮件服务和数据库存储"
    
    def __init__(self, mcp_client=None, contact_repo=None, email_repo=None):
        super().__init__(mcp_client, contact_repo)
        self.email_repo = email_repo
        self._mock_db = {}
        self._mock_emails = []
    
    async def execute(self, action: str, **kwargs) -> AdapterResult:
        """统一执行入口"""
        # 优先使用缓存
        user_id = kwargs.get("user_id", "default")
        
        # 1. 尝试MCP调用
        if self.mcp_client and self.mcp_client.is_available():
            try:
                mcp_result = await self._execute_mcp(action, **kwargs)
                if mcp_result.success:
                    return mcp_result
            except Exception as e:
                print(f"[Contact] MCP调用失败: {e}")
        
        # 2. 尝试数据库
        if self.repository:
            try:
                db_result = await self._execute_db(action, **kwargs)
                if db_result.success:
                    return db_result
            except Exception as e:
                print(f"[Contact] 数据库调用失败: {e}")
        
        # 3. 降级到模拟数据
        return self._fallback(action, **kwargs)
    
    async def _execute_mcp(self, action: str, **kwargs) -> AdapterResult:
        """通过MCP执行"""
        if action == "list_emails":
            result = await self.mcp_client.call_tool(
                "email_list_emails",
                {}
            )
            if result.get("success"):
                return AdapterResult(
                    success=True,
                    data=result["result"],
                    source="mcp_email"
                )
        elif action == "send_email":
            result = await self.mcp_client.call_tool(
                "email_send_email",
                {
                    "to": kwargs.get("recipient", ""),
                    "subject": kwargs.get("subject", ""),
                    "body": kwargs.get("body", "")
                }
            )
            if result.get("success"):
                return AdapterResult(
                    success=True,
                    data=result["result"],
                    source="mcp_email"
                )
        
        return AdapterResult(success=False, error="不支持的MCP操作")
    
    async def _execute_db(self, action: str, **kwargs) -> AdapterResult:
        """通过数据库执行"""
        if not self.repository:
            return AdapterResult(success=False, error="No database repository")
        try:
            # 数据库操作（可选功能）
            return AdapterResult(success=False, error="Database not implemented yet")
        except Exception as e:
            print(f"[Contact] 数据库调用失败: {e}")
            return AdapterResult(success=False, error=str(e))
    
    def _get_mock_data(self, action: str, **kwargs) -> Any:
        """获取模拟数据"""
        user_id = kwargs.get("user_id", "default")
        
        if action == "list_contacts":
            if user_id not in self._mock_db:
                self._mock_db[user_id] = [
                    Contact(
                        id="1",
                        name="张三",
                        phone="13800138000",
                        email="zhangsan@example.com",
                        company="科技公司",
                        position="工程师",
                        created_at=datetime.now().isoformat()
                    ),
                    Contact(
                        id="2",
                        name="李四",
                        phone="13900139000",
                        email="lisi@example.com",
                        company="贸易公司",
                        position="经理",
                        created_at=datetime.now().isoformat()
                    )
                ]
            return self._mock_db[user_id]
        
        elif action == "list_emails":
            if not self._mock_emails:
                self._mock_emails = [
                    Email(
                        id="1",
                        subject="会议邀请：AI 技术分享",
                        sender="admin@example.com",
                        recipients=["user@example.com"],
                        date=datetime.now().isoformat(),
                        body="你好，下周一将举办 AI 技术分享会，欢迎参加。"
                    )
                ]
            return self._mock_emails
        
        elif action == "add_contact":
            contact = kwargs.get("contact")
            if user_id not in self._mock_db:
                self._mock_db[user_id] = []
            if contact and not contact.id:
                contact.id = str(len(self._mock_db[user_id]) + 1)
            if contact:
                self._mock_db[user_id].append(contact)
            return True
        
        elif action == "generate_email_draft":
            query = kwargs.get("query", "")
            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。\n\n此致，\n你的助手"
            }
        
        elif action == "sniff_contacts":
            query = kwargs.get("query", "")
            import re
            emails = re.findall(r'[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}', query)
            phones = re.findall(r'1[3-9]\d{9}', query)
            contacts = []
            for i, email in enumerate(emails):
                contacts.append(Contact(
                    id=str(i+1),
                    name=f"联系人{i+1}",
                    phone=phones[i] if i < len(phones) else "",
                    email=email,
                    company="",
                    position="",
                    created_at=datetime.now().isoformat()
                ))
            return contacts
        
        return None