#!/usr/bin/env python3
"""
期刊文献采集器
采集公开期刊文章、学术期刊目录
"""

import json
import sys
from datetime import datetime
from typing import Dict, List, Any

class JournalsCollector:
    """期刊文献采集"""

    # 开放获取期刊目录
    OPEN_ACCESS_JOURNALS = {
        "politics_security": [
            "journals.sagepub.com/home/isa",
            "onlinelibrary.wiley.com/journal/15481392",  # International Security
            "direct.mit.edu/isec",                         # International Security
        ],
        "technology": [
            "dl.acm.org/journal/cacm",
            "ieeexplore.ieee.org",                        # IEEE（开放获取文章）
        ],
        "policy": [
            "tandfonline.com/action/journalInformation",
            "link.springer.com/journal/41118"            # Policy Sciences
        ]
    }

    def __init__(self):
        self.collection_log = {
            "start_time": datetime.now().isoformat(),
            "collector": "JournalsCollector",
            "articles_collected": 0,
            "journals_accessed": []
        }

    async def collect_journal_articles(self,
                                        field: str,
                                        keywords: List[str],
                                        year_range: tuple = None,
                                        max_results: int = 30) -> Dict[str, Any]:
        """
        采集期刊文章

        Args:
            field: 研究领域（politics_security/technology/policy）
            keywords: 搜索关键词
            year_range: 年份范围 (start, end)
            max_results: 最大结果数

        Returns:
            结构化期刊文章数据
        """
        self.collection_log["field"] = field
        self.collection_log["keywords"] = keywords

        journals = self.OPEN_ACCESS_JOURNALS.get(field, [])
        results = []

        for journal in journals:
            for keyword in keywords:
                # 构建期刊搜索查询
                query = f"{keyword} site:{journal}"
                if year_range:
                    query += f" {year_range[0]}..{year_range[1]}"

                self.collection_log["journals_accessed"].append({
                    "journal": journal,
                    "keyword": keyword,
                    "query": query,
                    "timestamp": datetime.now().isoformat()
                })

        self.collection_log["end_time"] = datetime.now().isoformat()
        self.collection_log["articles_collected"] = len(results)

        return {
            "article_items": results,
            "metadata": {
                "type": "journal_articles",
                "field": field,
                "count": len(results)
            },
            "collection(collection_log": self.collection_log
        }

    def extract_article_metadata(self, content: str, url: str) -> Dict[str, Any]:
        """提取文章元数据"""
        return {
            "title": self._extract_title(content),
            "journal": self._extract_journal_name(url),
            "authors": [],
            "abstract": self._extract_abstract(content),
            "publication_date": "",
            "doi": self._extract_doi(content),
            "url": url
        }

    def _extract_title(self, content: str) -> str:
        """提取标题"""
        if "<title>" in content:
            start = content.find("<title>") + 7
            end = content.find("</title>", start)
            if end > start:
                return content[start:end].strip()
        return "Unknown"

    def _extract_journal_name(self, url: str) -> str:
        """从URL提取期刊名"""
        if "journals.sagepub.com" in url:
            return "SAGE Journals"
        elif "onlinelibrary.wiley.com" in url:
            return "Wiley Online Library"
        elif "ieeexplore.ieee.org" in url:
            return "IEEE Xplore"
        return "Unknown Journal"

    def _extract_abstract(self, content: str) -> str:
        """提取摘要"""
        return content[:500] + "..." if len(content) > 500 else content

    def _extract_doi(self, content: str) -> str:
        """提取DOI"""
        # 简化：查找DOI模式
        if "doi.org/" in content:
            start = content.find("doi.org/")
            end = content.find('"', start)
            if end > start:
                return "https://doi.org/" + content[start + 8:end]
        return ""

def main():
    print("JournalsCollector v1.0")
    print("支持领域：politics_security, technology, policy")

if __name__ == "__main__":
    main()