# -*- coding: utf-8 -*-

import json
import sqlite3
import os
from datetime import datetime, timedelta


def create_database():
    conn = sqlite3.connect('./resources/db/uni_rss.db')
    cursor = conn.cursor()
    cursor.execute('''CREATE TABLE IF NOT EXISTS articles (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        title TEXT,
        link TEXT,
        author TEXT,
        description TEXT,
        pubDate DATETIME,
        source TEXT,
        is_sended BOOLEAN
    )''')
    conn.commit()
    conn.close()

def insert_data(data):
    conn = sqlite3.connect('./resources/db/uni_rss.db')
    cursor = conn.cursor()
    for entry in data:
        cursor.execute('''
            SELECT 1 FROM articles WHERE title = ? AND author = ?
        ''', (entry['title'], entry['author']))
        
        if cursor.fetchone() is None:
            cursor.execute('''
                INSERT INTO articles (title, link, author, description, pubDate, source)
                VALUES (?, ?, ?, ?, ?, ?)
            ''', (entry['title'], entry['link'], entry['author'], entry['description'], entry['published'], entry['source']))
    conn.commit()
    conn.close()

def get_uni_rss_json():
    # 检查文件是否存在
    if not os.path.exists('./resources/JSON/uni_rss.json'):
        raise FileNotFoundError(f"uni_rss.json文件不存在，请检查程序是否运行正常！")
    
    # 打开并读取JSON文件
    with open('./resources/JSON/uni_rss.json', 'r', encoding='utf-8') as file:
        content = file.read()
        if not content:
            pass
        else:
            data = json.loads(content)
    
    # 假设data是一个包含多个JSON对象的列表
    if not isinstance(data, list):
        raise ValueError("JSON文件格式错误，请检查common.py是否异常！")
    
    # 提取所需字段并编号
    total_data = []
    for index, item in enumerate(data, start=1):
        entry = {
            "id": index,
            "title": item.get("title", ""),
            "link": item.get("link", ""),
            "author": item.get("author", ""),
            "description": item.get("description", ""),
            "published": item.get("published", ""),
            "source": item.get("source", ""),
        }
        total_data.append(entry)
    
    return total_data

def select_articles(uni_rss_switch, Unity):
    conn = sqlite3.connect('./resources/db/uni_rss.db')
    cursor = conn.cursor()
    
    # 获取当前日期和时间
    now = datetime.now()
    two_days_ago = now - timedelta(days=2)
    
    if uni_rss_switch == False:        
        # 查询指定时间段内的数据
        cursor.execute('''
            SELECT * FROM articles
            WHERE is_sended IS NULL AND pubDate BETWEEN ? AND ?
            ORDER BY pubDate DESC
        ''', (two_days_ago.strftime('%Y-%m-%d %H:%M:%S'), now.strftime('%Y-%m-%d %H:%M:%S')))
    elif uni_rss_switch == True:
        # 查询指定时间段内且title包含特定关键词的数据
        like_conditions = ' OR '.join([f"title LIKE ?"] * len(Unity))

        # 完整的查询语句
        query = f'''
            SELECT * FROM articles
            WHERE is_sended IS NULL AND pubDate BETWEEN ? AND ?
            AND ({like_conditions})
            ORDER BY pubDate DESC
        '''

        # 构建参数列表
        params = [
            two_days_ago.strftime('%Y-%m-%d %H:%M:%S'),
            now.strftime('%Y-%m-%d %H:%M:%S')
        ] + [f'%{keyword}%' for keyword in Unity]

        # 执行查询
        cursor.execute(query, params)
    
    results = cursor.fetchall()
    if results:
        for row in results:
            user_id = row[0]
            cursor.execute('''
                UPDATE articles
                SET is_sended = True
                WHERE id = ?
            ''', (user_id,))
        
        conn.commit()  # 提交事务
    
    conn.close()
    return results

def clear_table():
    conn = sqlite3.connect('./resources/db/uni_rss.db')
    cursor = conn.cursor()
    cursor.execute('DELETE FROM articles')
    conn.commit()
    conn.close()

def record_md(result, filename="./resources/history/uni_passage.md"):
    # 读取现有内容
    if os.path.exists(filename):
        with open(filename, 'r', encoding='utf-8') as file:
            existing_content = file.read()
    else:
        existing_content = ""
    
    # 将新内容插入到现有内容的开头
    new_content = result + existing_content
    
    # 写回文件
    with open(filename, 'w', encoding='utf-8') as file:
        file.write(new_content)

def get_filtered_articles(entries):
    result_long = ""
    result_short = ""
    record = ""
    short_results = []

    for entry in entries:
        # 构建长文本结果
        result_long += f"文章：[{entry[1]}]({entry[2]})\n"
        result_long += f"作者：{entry[3]}\n"
        result_long += f"描述：{entry[4]}\n"
        result_long += f"上传时间：{entry[5]}\n"
        result_long += f"来源：{entry[6]}\n"
        result_long += "\n" + "-" * 40 + "\n"  # 添加分隔线以便区分不同文章

        # 构建短文本结果并进行分块处理
        current_entry = (
            f"文章：[{entry[1]}]({entry[2]})\n"
            f"上传时间：{entry[5]}\n"
            "\n" + "-" * 3 + "\n"  # 添加分隔线以便区分不同文章
        )
        temp_result = result_short + current_entry
        if len(temp_result.encode('utf-8')) > 4096:
            short_results.append(result_short)
            result_short = current_entry
        else:
            result_short = temp_result

        record += f"#### 文章：[{entry[1]}]({entry[2]})\n"
        record += f"**作者**：{entry[3]}\n"
        record += f"**描述**：{entry[4]}\n"
        record += f"**上传时间**：{entry[5]}\n"
        record += f"**来源**：{entry[6]}\n"
        record += "\n" + "-" * 40 + "\n"  # 添加分隔线以便区分不同文章

    # 处理最后一个结果
    if result_short:
        short_results.append(result_short)

    record_md(record)

    return result_long, short_results


def Src_uni_rss(uni_rss_switch, Unity):
    if not os.path.exists('./resources/db/uni_rss.db'):
        # 创建数据库和表
        create_database()

    # 清空表
    # clear_table()

    # 获取 JSON 数据
    uni_rss_data = get_uni_rss_json()

    # 插入数据到数据库
    insert_data(uni_rss_data)

    # 查询指定时间段内的数据
    filtered_articles = select_articles(uni_rss_switch, Unity)
    # print(filtered_articles)

    if filtered_articles:
        result_long, short_results = get_filtered_articles(filtered_articles)
        return result_long, short_results
    else:
        return False

if __name__ == "__main__":
    results = Src_uni_rss(False, ["webshell", "2000", "POC", "SQL", "XSS", "CSRF", "漏洞"])
    if results:
        result_long, short_results = results
        
        # 写入长文本结果
        with open("./1.txt", "a", encoding="utf-8") as f:
            f.write(result_long)
            f.write("\n" + "-" * 40 + "\n")
        
        # 写入分块的短文本结果
        for short_result in short_results:
            with open("./2.txt", "a", encoding="utf-8") as f:
                f.write(short_result)
                f.write("\n" + "-" * 40 + "\n")
    else:
        # 如果为空，则跳过执行
        print("-" * 40)
        print("聚合RSS数据为空，跳过执行。")