"""
通讯录子图API调用工具
Contact Subgraph API Client
"""

from typing import Dict, Any, Optional, List
from datetime import datetime
from dataclasses import dataclass

from .state import Contact, Email


# 模拟数据库
MOCK_CONTACTS_DB = {}
MOCK_EMAILS_DB = []


@dataclass
class ContactAPIClient:
    """
    通讯录API客户端 - 可扩展支持多种后端
    """
    
    def list_contacts_mock(self, user_id: str = "default") -> List[Contact]:
        """
        模拟查询联系人列表
        """
        if user_id not in MOCK_CONTACTS_DB:
            # 初始化一些示例数据
            MOCK_CONTACTS_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()
                ),
                Contact(
                    id="3",
                    name="王五",
                    phone="13700137000",
                    email="wangwu@example.com",
                    company="咨询公司",
                    position="顾问",
                    created_at=datetime.now().isoformat()
                )
            ]
        
        return MOCK_CONTACTS_DB[user_id]
    
    def extract_contact_info_mock(self, query: str) -> Optional[Dict[str, Any]]:
        """
        模拟从查询中提取联系人信息
        """
        # 简化的提取逻辑
        import re
        
        # 提取邮箱
        email_match = re.search(r'[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}', query)
        # 提取手机号
        phone_match = re.search(r'1[3-9]\d{9}', query)
        # 提取姓名（简单匹配）
        # 先看是否有"添加"等关键词
        if any(keyword in query for keyword in ["添加", "add"]):
            # 尝试提取姓名
            name = "未知"
            # 简单的逻辑：去掉关键词、去掉邮箱和电话后剩下的
            clean_query = query
            if email_match:
                clean_query = clean_query.replace(email_match.group(), "")
            if phone_match:
                clean_query = clean_query.replace(phone_match.group(), "")
            clean_query = clean_query.replace("添加", "").replace("add", "").replace("联系人", "").strip()
            if clean_query:
                name = clean_query
            
            return {
                "name": name,
                "phone": phone_match.group() if phone_match else "",
                "email": email_match.group() if email_match else "",
                "created_at": datetime.now().isoformat()
            }
        
        return None
    
    def save_contact_mock(self, user_id: str, contact: Contact) -> bool:
        """
        模拟保存联系人
        """
        if user_id not in MOCK_CONTACTS_DB:
            MOCK_CONTACTS_DB[user_id] = []
        
        if not contact.id:
            contact.id = str(len(MOCK_CONTACTS_DB[user_id]) + 1)
        
        MOCK_CONTACTS_DB[user_id].append(contact)
        return True
    
    def list_emails_mock(self) -> List[Email]:
        """
        模拟查询邮件列表
        """
        global MOCK_EMAILS_DB
        
        if not MOCK_EMAILS_DB:
            # 初始化一些示例邮件
            MOCK_EMAILS_DB = [
                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。"
                ),
                Email(
                    id="2",
                    subject="项目进度更新",
                    sender="manager@example.com",
                    recipients=["user@example.com"],
                    date=datetime.now().isoformat(),
                    body="项目进度良好，继续保持。"
                )
            ]
        
        return MOCK_EMAILS_DB
    
    def generate_email_draft_mock(self, query: str) -> Dict[str, str]:
        """
        模拟生成邮件草稿
        """
        # 简单的模板生成
        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"
        }
    
    def send_email_mock(self, recipient: str, subject: str, body: str) -> Dict[str, Any]:
        """
        模拟发送邮件
        """
        # 记录到模拟数据库
        MOCK_EMAILS_DB.append(
            Email(
                id=str(len(MOCK_EMAILS_DB) + 1),
                subject=subject,
                sender="me@example.com",
                recipients=[recipient],
                date=datetime.now().isoformat(),
                body=body
            )
        )
        
        return {
            "success": True,
            "message": "邮件发送成功"
        }
    
    def sniff_contacts_mock(self, query: str) -> Dict[str, Any]:
        """
        模拟智能嗅探联系人
        """
        # 简化的检测逻辑
        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({
                "name": f"联系人{i+1}",
                "email": email,
                "phone": phones[i] if i < len(phones) else ""
            })
        
        return {
            "contacts": contacts,
            "count": len(contacts),
            "suggestion": "是否添加这些联系人？"
        }


# 单例实例
contact_api = ContactAPIClient()