#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
数据采集模块 - 美国对华制裁监测预警技能
监测美国多机构的制裁动态

创建时间：2026-04-03
开发者：瞰宇 (Kàn Yǔ)
"""

import asyncio
import json
import aiohttp
from typing import Dict, List, Optional
from dataclasses import dataclass, asdict
from datetime import datetime, timedelta
import re


@dataclass
class SanctionEntity:
    """被制裁实体"""
    name: str  # 实体名称
    entity_id: str  # 实体ID
    country: str  # 国家
    address: str  # 地址
    list_type: str  # 清单类型（Entity List, SDN, CHIPS等）
    list_name: str  # 清单名称
    added_date: str  # 加入日期
    reason: str  # 制裁原因
    source: str  # 数据源
    url: Optional[str] = None  # 源URL
    
    def __post_init__(self):
        if not self.country:
            self.country = "Unknown"
        if not self.address:
            self.address = "Unknown"


@dataclass
class SanctionUpdate:
    """制裁更新记录"""
    update_type: str  # added, removed, modified
    entity_id: str  # 实体ID
    entity_name: str  # 实体名称
    list_type: str  # 清单类型
    update_date: str  # 更新日期
    details: Dict  # 详细信息


class SanctionsCollector:
    """
    制裁数据采集器
    监测美国多机构的制裁动态
    """
    
    # 主要数据源
    DATA_SOURCES = {
        "BIS_Entity_List": {
            "url": "https://bis.doc.gov/index.php/policy-guidance/lists-of-parties-of-concern/entity-list",
            "description": "美国商务部实体清单"
        },
        "OFAC_SDN": {
            "url": "https://home.treasury.gov/policy-issues/financial-sanctions/specially-designated-nationals-list",
            "description": "美国财政部SDN清单"
        },
        "DoD_CHIPS": {
            "url": "https://public.cyber.mil/CHIPS-Act",
            "description": "美国国防部CHIPS Act清单"
        }
    }
    
    def __init__(self, use_async: bool = True):
        """
        初始化制裁数据采集器
        
        Args:
            use_async: 是否使用异步采集
        """
        self.use_async = use_async
        self.collected_data = {
            "entities": [],
            "updates": [],
            "last_update": None
        }
    
    async def fetch_bis_entity_list(self) -> List[SanctionEntity]:
        """
        采集BIS实体清单
        
        Returns:
            SanctionEntity对象列表
        """
        # TODO: 实际实现中，这里应该：
        # 1. 使用scrapling的stealthy-fetch获取BIS实体清单
        # 2. 解析CSV/HTML/Excel格式
        # 3. 筛选中国实体
        # 4. 提取实体信息和制裁原因
        
        entities = []
        
        # 示例数据结构
        example_entity = SanctionEntity(
            name="示例中国公司",
            entity_id="EXAMPLE-001",
            country="China",
            address="北京市",
            list_type="Entity List",
            list_name="BIS Entity List",
            added_date="2024-01-15",
            reason="涉及军事用途技术转让",
            source="BIS",
            url="https://bis.doc.gov/..."
        )
        
        return entities
    
    async def fetch_ofac_sdn_list(self) -> List[SanctionEntity]:
        """
        采集OFAC SDN清单
        
        Returns:
            SanctionEntity对象列表
        """
        # TODO: 实际实现中，这里应该：
        # 1. 下载SDN清单（CSV/XML格式）
        # 2. 解析实体信息
        # 3. 筛选中国相关实体
        
        entities = []
        return entities
    
    async def fetch_dod_chips_list(self) -> List[SanctionEntity]:
        """
        采集国防部CHIPS Act清单
        
        Returns:
            SanctionEntity对象列表
        """
        # TODO: 实际实现中，这里应该：
        # 1. 访问国防部CHIPS Act页面
        # 2. 解析实体列表
        # 3. 提取实体信息
        
        entities = []
        return entities
    
    async def detect_updates(
        self, 
        previous_entities: List[SanctionEntity],
        current_entities: List[SanctionEntity]
    ) -> List[SanctionUpdate]:
        """
        检测制裁更新（新增、移除、修改）
        
        Args:
            previous_entities: 之前的实体列表
            current_entities: 当前的实体列表
            
        Returns:
            SanctionUpdate对象列表
        """
        updates = []
        previous_ids = {e.entity_id for e in previous_entities}
        current_ids = {e.entity_id for e in current_entities}
        
        # 检测新增
        added_ids = current_ids - previous_ids
        for entity in current_entities:
            if entity.entity_id in added_ids:
                update = SanctionUpdate(
                    update_type="added",
                    entity_id=entity.entity_id,
                    entity_name=entity.name,
                    list_type=entity.list_type,
                    update_date=datetime.now().strftime("%Y-%m-%d"),
                    details={"reason": entity.reason}
                )
                updates.append(update)
        
        # 检测移除
        removed_ids = previous_ids - current_ids
        for entity in previous_entities:
            if entity.entity_id in removed_ids:
                update = SanctionUpdate(
                    update_type="removed",
                    entity_id=entity.entity_id,
                    entity_name=entity.name,
                    list_type=entity.list_type,
                    update_date=datetime.now().strftime("%Y-%m-%d"),
                    details={}
                )
                updates.append(update)
        
        return updates
    
    async def collect_all(self) -> Dict:
        """
        采集所有制裁数据
        
        Returns:
            采集结果字典
        """
        tasks = [
            self.fetch_bis_entity_list(),
            self.fetch_ofac_sdn_list(),
            self.fetch_dod_chips_list()
        ]
        
        results = await asyncio.gather(*tasks)
        
        all_entities = []
        for entities in results:
            all_entities.extend(entities)
        
        self.collected_data["entities"] = all_entities
        self.collected_data["last_update"] = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        
        return self.collected_data
    
    def save_data(self, filepath: str):
        """
        保存采集数据
        
        Args:
            filepath: 保存路径
        """
        serializable_data = {
            "entities": [asdict(e) for e in self.collected_data["entities"]],
            "last_update": self.collected_data["last_update"]
        }
        
        with open(filepath, 'w', encoding='utf-8') as f:
            json.dump(serializable_data, f, ensure_ascii=False, indent=2)
    
    def load_data(self, filepath: str):
        """
        加载已保存的数据
        
        Args:
            filepath: 数据文件路径
        """
        with open(filepath, 'r', encoding='utf-8') as f:
            data = json.load(f)
        
        self.collected_data["entities"] = [
            SanctionEntity(**e) for e in data.get("entities", [])
        ]
        self.collected_data["last_update"] = data.get("last_update")


async def main():
    """测试制裁数据采集器"""
    collector = SanctionsCollector(use_async=True)
    
    print("=== 采集制裁数据 ===")
    result = await collector.collect_all()
    
    print(f"采集完成！")
    print(f"- 实体数量：{len(result['entities'])}")
    print(f"- 最后更新：{result['last_update']}")


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