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

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

def create_database():
    conn = sqlite3.connect('./resources/db/github.db')
    cursor = conn.cursor()

    cursor.executescript('''
    CREATE TABLE IF NOT EXISTS keywords (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        title TEXT,
        link TEXT,
        description TEXT,
        pubDate DATETIME,
        author TEXT,
        keyword TEXT,
        language TEXT,
        is_sended BOOLEAN
    );
    CREATE TABLE IF NOT EXISTS repos (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        title TEXT,
        link TEXT,
        description TEXT,
        pubDate DATETIME,
        author TEXT,
        keyword TEXT,
        link2 TEXT
    );
    CREATE TABLE IF NOT EXISTS releases (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        link TEXT,
        pubDate DATETIME,
        author TEXT,
        keyword TEXT
    );
    CREATE TABLE IF NOT EXISTS users (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        title TEXT,
        link TEXT,
        description TEXT,
        pubDate DATETIME,
        author TEXT,
        keyword TEXT,
        language TEXT,
        is_sended BOOLEAN
    );
    ''')

    conn.commit()
    conn.close()


def insert_data():
    # 检查文件是否存在
    # 打开并读取JSON文件
    # 假设data是一个包含多个JSON对象的列表，然后校验JSON格式是否异常
    if not os.path.exists('./resources/JSON/github_keyword.json'):
        raise FileNotFoundError(f"github_keyword文件不存在，请检查程序是否运行正常！")
    with open('./resources/JSON/github_keyword.json', 'r', encoding='utf-8') as file:
        data_keyword = json.load(file)
    if not isinstance(data_keyword, list):
        raise ValueError("JSON文件格式错误，请检查爬取程序是否异常！")
    
    if not os.path.exists('./resources/JSON/github_repo.json'):
        raise FileNotFoundError(f"github_repo文件不存在，请检查程序是否运行正常！")    
    with open('./resources/JSON/github_repo.json', 'r', encoding='utf-8') as file:
        data_repo = json.load(file)
    if not isinstance(data_repo, list):
        raise ValueError("JSON文件格式错误，请检查爬取程序是否异常！")
    
    if not os.path.exists('./resources/JSON/github_release.json'):
        raise FileNotFoundError(f"github_release文件不存在，请检查程序是否运行正常！")    
    with open('./resources/JSON/github_release.json', 'r', encoding='utf-8') as file:
        data_release = json.load(file)
    if not isinstance(data_release, list):
        raise ValueError("JSON文件格式错误，请检查爬取程序是否异常！")
    
    if not os.path.exists('./resources/JSON/github_user.json'):
        raise FileNotFoundError(f"github_user文件不存在，请检查程序是否运行正常！")
    with open('./resources/JSON/github_user.json', 'r', encoding='utf-8') as file:
        data_user = json.load(file)
    if not isinstance(data_user, list):
        raise ValueError("JSON文件格式错误，请检查爬取程序是否异常！")
    
    conn = sqlite3.connect('./resources/db/github.db')
    cursor = conn.cursor()

    # 提取所需字段并编号
    for index, item in enumerate(data_keyword, start=1):
        entry = {
            "id": index,
            "title": item.get("name", ""),
            "link": item.get("link", ""),
            "description": item.get("description", ""),
            "pubDate": item.get("created_at", ""),
            "author": item.get("author", ""),
            "keyword": item.get("keyword", ""),
            "language": item.get("language", "")
        }
        try:
            pub_date = datetime.strptime(entry['pubDate'], '%Y-%m-%dT%H:%M:%SZ')
            pub_date += timedelta(hours=8)
            formatted_pub_date = pub_date.strftime('%Y-%m-%d %H:%M:%S')
        except ValueError:
            # 如果解析失败，使用原始 pubDate 字符串
            formatted_pub_date = entry['pubDate']
        

        # 检查是否存在相同 title 和 author 的记录
        cursor.execute('''
            SELECT 1 FROM keywords WHERE title = ? AND author = ?
        ''', (entry['title'], entry['author']))
        
        if cursor.fetchone() is None:
            # 如果没有找到相同记录，则插入新记录
            cursor.execute('''
                INSERT INTO keywords (title, link, description, pubDate, author, language, keyword)
                VALUES (?, ?, ?, ?, ?, ?, ?)
            ''', (entry['title'], entry['link'], entry['description'], formatted_pub_date, entry['author'], entry['language'], entry['keyword']))
    
    for index, item in enumerate(data_repo, start=1):
        entry = {
            "id": index,
            "title": item.get("name", ""),
            "link": f"https://github.com/{item.get('keyword', '')}",
            "description": item.get("description", ""),
            "pubDate": item.get("updated_at", ""),
            "author": item.get("author", ""),
            "keyword": item.get("keyword", ""),
            "link2": item.get("link_2", "")
        }
        try:
            pub_date = datetime.strptime(entry['pubDate'], '%Y-%m-%dT%H:%M:%SZ')
            pub_date += timedelta(hours=8)
            formatted_pub_date = pub_date.strftime('%Y-%m-%d %H:%M:%S')
        except ValueError:
            # 如果解析失败，使用原始 pubDate 字符串
            formatted_pub_date = entry['pubDate']
        
        cursor.execute('''
            INSERT INTO repos (title, link, description, pubDate, author, link2, keyword)
            VALUES (?, ?, ?, ?, ?, ?, ?)
        ''', (entry['title'], entry['link'], entry['description'], formatted_pub_date, entry['author'], entry['link2'], entry['keyword']))

    for index, item in enumerate(data_release, start=1):
        entry = {
            "id": index,
            "link": item.get("link", ""),
            "pubDate": item.get("published_at", ""),
            "author": item.get("author", ""),
            "keyword": item.get("keyword", "")
        }
        try:
            pub_date = datetime.strptime(entry['pubDate'], '%Y-%m-%dT%H:%M:%SZ')
            pub_date += timedelta(hours=8)
            formatted_pub_date = pub_date.strftime('%Y-%m-%d %H:%M:%S')
        except ValueError:
            # 如果解析失败，使用原始 pubDate 字符串
            formatted_pub_date = entry['pubDate']
        
        cursor.execute('''
            INSERT INTO releases (link, pubDate, author, keyword)
            VALUES (?, ?, ?, ?)
        ''', (entry['link'], formatted_pub_date, entry['author'], entry['keyword']))
    

    # 插入 users 数据
    for index, item in enumerate(data_user, start=1):
        entry = {
            "id": index,
            "title": item.get("name", ""),
            "link": item.get("link", ""),
            "description": item.get("description", ""),
            "pubDate": item.get("created_at", ""),
            "author": item.get("author", ""),
            "keyword": item.get("keyword", ""),
            "language": item.get("language", "")
        }
        try:
            pub_date = datetime.strptime(entry['pubDate'], '%Y-%m-%dT%H:%M:%SZ')
            pub_date += timedelta(hours=8)
            formatted_pub_date = pub_date.strftime('%Y-%m-%d %H:%M:%S')
        except ValueError:
            # 如果解析失败，使用原始 pubDate 字符串
            formatted_pub_date = entry['pubDate']
        
        # 检查是否存在相同 title 和 author 的记录
        cursor.execute('''
            SELECT 1 FROM users WHERE title = ? AND author = ?
        ''', (entry['title'], entry['author']))
        
        if cursor.fetchone() is None:
            # 如果没有找到相同记录，则插入新记录
            cursor.execute('''
                INSERT INTO users (title, link, description, pubDate, author, keyword, language)
                VALUES (?, ?, ?, ?, ?, ?, ?)
            ''', (entry['title'], entry['link'], entry['description'], formatted_pub_date, entry['author'], entry['keyword'], entry['language']))
            
    conn.commit()
    conn.close()

def select_articles(e_hour):
    conn = sqlite3.connect('./resources/db/github.db')
    cursor = conn.cursor()
    
    # 获取当前日期和时间
    now = datetime.now()
    two_months_ago = now - timedelta(days=60)  # 假设两个月大约60天
    start_time = now - timedelta(hours=e_hour, minutes=3)
    
    # 查询指定时间段内的数据
    cursor.execute('''
        SELECT * FROM keywords
        WHERE is_sended IS NULL AND pubDate BETWEEN ? AND ?
        ORDER BY pubDate DESC
    ''', (start_time.strftime('%Y-%m-%d %H:%M:%S'), now.strftime('%Y-%m-%d %H:%M:%S')))

    result_1 = cursor.fetchall()

    if result_1:
        for row in result_1:
            keyword_id = row[0]
            cursor.execute('''
                UPDATE keywords
                SET is_sended = True
                WHERE id = ?
            ''', (keyword_id,))

        conn.commit()

    cursor.execute('''
            SELECT * FROM repos
            WHERE pubDate BETWEEN ? AND ?
        ''', (start_time.strftime('%Y-%m-%d %H:%M:%S'), now.strftime('%Y-%m-%d %H:%M:%S')))

    result_2 = cursor.fetchall()

    # 查询最近的5条未被标记为True的消息且发布时间不超过两个月
    cursor.execute('''
        SELECT * FROM users
        WHERE is_sended IS NULL AND pubDate BETWEEN ? AND ?
        ORDER BY pubDate DESC
        LIMIT 5
    ''', (two_months_ago.strftime('%Y-%m-%d %H:%M:%S'), now.strftime('%Y-%m-%d %H:%M:%S')))
    
    result_3 = cursor.fetchall()
    # print(results)

    if result_3:
        for row in result_3:
            user_id = row[0]
            cursor.execute('''
                UPDATE users
                SET is_sended = True
                WHERE id = ?
            ''', (user_id,))
        
        conn.commit()  # 提交事务

    cursor.execute('''
            SELECT * FROM releases
            WHERE pubDate BETWEEN ? AND ?
        ''', (start_time.strftime('%Y-%m-%d %H:%M:%S'), now.strftime('%Y-%m-%d %H:%M:%S')))

    result_4 = cursor.fetchall()

    cursor.close()
    conn.close()
    
    return result_1, result_2, result_3, result_4

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

def record_md(result, filename="./resources/history/github.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, choice):
    result_long = ""
    result_short = ""
    record = ""
    short_results = []

    for entry in entries:
        if choice == 1:
            # 构建长文本结果
            result_long += f"关键词【{entry[6]}】发现新项目：[{entry[1]}]({entry[2]})\n"
            result_long += f"项目描述：{entry[3]}\n"
            result_long += f"上传时间：{entry[4]}\n"
            result_long += f"开发语言：{entry[7]}\t\t作者：{entry[5]}\n"
            result_long += "\n" + "-" * 10 + "\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"关键词【{entry[6]}】发现新项目：[{entry[1]}]({entry[2]})\n"
                f"上传时间：{entry[4]}\n"
                f"开发语言：{entry[7]}\t\t作者：{entry[5]}\n"
                "\n" + "-" * 3 + "\n"  # 添加分隔线以便区分不同文章
            )
        elif choice == 2:
            # 构建长文本结果
            result_long += f"项目：[{entry[1]}]({entry[2]})存在更新！！！\n"
            result_long += f"更新描述：{entry[3]}\n"
            result_long += f"更新时间：{entry[4]}\n"
            result_long += f"提交者：{entry[5]}，[点此查看提交详情]({entry[7]})\n"
            result_long += "\n" + "-" * 10 + "\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"项目：[{entry[1]}]({entry[2]})存在更新！！！\n"
                f"更新时间：{entry[4]}\n"
                f"提交者：{entry[5]}，[点此查看提交详情]({entry[7]})\n"
                "\n" + "-" * 3 + "\n"  # 添加分隔线以便区分不同文章
            )
        elif choice == 3:
            # 构建长文本结果
            result_long += f"大佬 {entry[5]} 上传了一个新工具：[{entry[1]}]({entry[2]})\n"
            result_long += f"项目描述：{entry[3]}\n"
            result_long += f"上传时间：{entry[4]}\n"
            result_long += "\n" + "-" * 10 + "\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"大佬 {entry[5]} 上传了一个新工具：[{entry[1]}]({entry[2]})\n"
                f"上传时间：{entry[4]}\n"
                "\n" + "-" * 3 + "\n"  # 添加分隔线以便区分不同文章
            )
        elif choice == 4:
            # 构建长文本结果
            result_long += f"【{entry[3]}】为[{entry[4]}]({entry[1]})发布了新版本，请及时查收！\n"
            result_long += f"发布时间：{entry[2]}\n"
            result_long += "\n" + "-" * 10 + "\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"【{entry[3]}】为[{entry[4]}]({entry[1]})发布了新版本，请及时查收！\n"
                f"发布时间：{entry[2]}\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

        if choice == 1:
            record += f"#### 关键词【{entry[6]}】发现新项目：[{entry[1]}]({entry[2]})\n"
            record += f"**项目描述**：{entry[3]}\n"
            record += f"**上传时间**：{entry[4]}\n"
            record += f"**开发语言**：{entry[7]}\n**作者**：{entry[5]}\n"
            record += "\n" + "-" * 10 + "\n"  # 添加分隔线以便区分不同文章
        elif choice == 2:
            record += f"#### 项目：[{entry[1]}]({entry[2]})存在更新！！！\n"
            record += f"**更新描述**：{entry[3]}\n"
            record += f"**更新时间**：{entry[4]}\n"
            record += f"**提交者**：{entry[5]}，[点此查看提交详情]({entry[7]})\n"
            record += "\n" + "-" * 10 + "\n"  # 添加分隔线以便区分不同文章
        elif choice == 3:
            record += f"#### 大佬 {entry[5]} 上传了一个新工具：[{entry[1]}]({entry[2]})\n"
            record += f"**项目描述**：{entry[3]}\n"
            record += f"**上传时间**：{entry[4]}\n"
            record += "\n" + "-" * 10 + "\n"  # 添加分隔线以便区分不同文章
        elif choice == 4:
            record += f"#### 【{entry[3]}】为[{entry[4]}]({entry[1]})发布了新版本，请及时查收！\n"
            record += f"**发布时间**：{entry[2]}\n"
            record += "\n" + "-" * 10 + "\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_github(e_hour):
    if not os.path.exists('./resources/db/github.db'):
        # 创建数据库和表
        create_database()

    # 清空表
    clear_table()

    # 插入数据到数据库
    insert_data()

    # 查询指定时间段内的数据
    keyword_data, repo_data, user_data, release_data = select_articles(e_hour)

    results = []
    if keyword_data:
        result_long_1, short_results_1 = get_filtered_articles(keyword_data, 1)
        results.append((result_long_1, short_results_1))
    else:
        results.append(("", []))

    if repo_data:
        result_long_2, short_results_2 = get_filtered_articles(repo_data, 2)
        results.append((result_long_2, short_results_2))
    else:
        results.append(("", []))

    if user_data:
        result_long_3, short_results_3 = get_filtered_articles(user_data, 3)
        results.append((result_long_3, short_results_3))
    else:
        results.append(("", []))

    if release_data:
        result_long_4, short_results_4 = get_filtered_articles(release_data, 4)
        results.append((result_long_4, short_results_4))
    else:
        results.append(("", []))

    return results

if __name__ == "__main__":
    results = Src_github(240)
    for i, (result_long, short_results) in enumerate(results, start=1):
        if result_long != "":
            print(f"长文本结果 {i}：")
            print(result_long)
            print("\n" + "-" * 10 + "\n")
        
        if short_results:
            print(f"分块的短文本结果 {i}：")
            for short_result in short_results:
                print(short_result)
                print("\n" + "-" * 10 + "\n")

    if all(result_long == "" and not short_results for result_long, short_results in results):
        # 如果为空，则跳过执行
        print("-" * 10)
        print("github数据为空，跳过执行。")