import asyncio
import hashlib
import os
import shutil
import sys
from pathlib import Path

import nonebot
import time

import uvicorn
from dotenv import load_dotenv
from nonebot.adapters.onebot.v11 import Adapter
import platform
from src.common.logger import get_module_logger

logger = get_module_logger("main_bot")

# 获取没有加载env时的环境变量
env_mask = {key: os.getenv(key) for key in os.environ}

uvicorn_server = None
driver = None
app = None
loop = None


def easter_egg():
    # 彩蛋
    from colorama import init, Fore

    init()
    text = "多年以后，面对AI行刑队，张三将会回想起他2023年在会议上讨论人工智能的那个下午"
    rainbow_colors = [Fore.RED, Fore.YELLOW, Fore.GREEN, Fore.CYAN, Fore.BLUE, Fore.MAGENTA]
    rainbow_text = ""
    for i, char in enumerate(text):
        rainbow_text += rainbow_colors[i % len(rainbow_colors)] + char
    print(rainbow_text)


def init_config():
    # 初次启动检测
    if not os.path.exists("config/bot_config.toml"):
        logger.warning("检测到bot_config.toml不存在，正在从模板复制")

        # 检查config目录是否存在
        if not os.path.exists("config"):
            os.makedirs("config")
            logger.info("创建config目录")

        shutil.copy("template/bot_config_template.toml", "config/bot_config.toml")
        logger.info("复制完成，请修改config/bot_config.toml和.env.prod中的配置后重新启动")


def init_env():
    # 初始化.env 默认ENVIRONMENT=prod
    if not os.path.exists(".env"):
        with open(".env", "w") as f:
            f.write("ENVIRONMENT=prod")

        # 检测.env.prod文件是否存在
        if not os.path.exists(".env.prod"):
            logger.error("检测到.env.prod文件不存在")
            shutil.copy("template.env", "./.env.prod")

    # 检测.env.dev文件是否存在，不存在的话直接复制生产环境配置
    if not os.path.exists(".env.dev"):
        logger.error("检测到.env.dev文件不存在")
        shutil.copy(".env.prod", "./.env.dev")

    # 首先加载基础环境变量.env
    if os.path.exists(".env"):
        load_dotenv(".env", override=True)
        logger.success("成功加载基础环境变量配置")


def load_env():
    # 使用闭包实现对加载器的横向扩展，避免大量重复判断
    def prod():
        logger.success("成功加载生产环境变量配置")
        load_dotenv(".env.prod", override=True)  # override=True 允许覆盖已存在的环境变量

    def dev():
        logger.success("成功加载开发环境变量配置")
        load_dotenv(".env.dev", override=True)  # override=True 允许覆盖已存在的环境变量

    fn_map = {"prod": prod, "dev": dev}

    env = os.getenv("ENVIRONMENT")
    logger.info(f"[load_env] 当前的 ENVIRONMENT 变量值：{env}")

    if env in fn_map:
        fn_map[env]()  # 根据映射执行闭包函数

    elif os.path.exists(f".env.{env}"):
        logger.success(f"加载{env}环境变量配置")
        load_dotenv(f".env.{env}", override=True)  # override=True 允许覆盖已存在的环境变量

    else:
        logger.error(f"ENVIRONMENT 配置错误，请检查 .env 文件中的 ENVIRONMENT 变量及对应 .env.{env} 是否存在")
        RuntimeError(f"ENVIRONMENT 配置错误，请检查 .env 文件中的 ENVIRONMENT 变量及对应 .env.{env} 是否存在")


def scan_provider(env_config: dict):
    provider = {}

    # 利用未初始化 env 时获取的 env_mask 来对新的环境变量集去重
    # 避免 GPG_KEY 这样的变量干扰检查
    env_config = dict(filter(lambda item: item[0] not in env_mask, env_config.items()))

    # 遍历 env_config 的所有键
    for key in env_config:
        # 检查键是否符合 {provider}_BASE_URL 或 {provider}_KEY 的格式
        if key.endswith("_BASE_URL") or key.endswith("_KEY"):
            # 提取 provider 名称
            provider_name = key.split("_", 1)[0]  # 从左分割一次，取第一部分

            # 初始化 provider 的字典（如果尚未初始化）
            if provider_name not in provider:
                provider[provider_name] = {"url": None, "key": None}

            # 根据键的类型填充 url 或 key
            if key.endswith("_BASE_URL"):
                provider[provider_name]["url"] = env_config[key]
            elif key.endswith("_KEY"):
                provider[provider_name]["key"] = env_config[key]

    # 检查每个 provider 是否同时存在 url 和 key
    for provider_name, config in provider.items():
        if config["url"] is None or config["key"] is None:
            logger.error(f"provider 内容：{config}\nenv_config 内容：{env_config}")
            raise ValueError(f"请检查 '{provider_name}' 提供商配置是否丢失 BASE_URL 或 KEY 环境变量")


async def graceful_shutdown():
    try:
        global uvicorn_server
        if uvicorn_server:
            uvicorn_server.force_exit = True  # 强制退出
            await uvicorn_server.shutdown()

        tasks = [t for t in asyncio.all_tasks() if t is not asyncio.current_task()]
        for task in tasks:
            task.cancel()
        await asyncio.gather(*tasks, return_exceptions=True)

    except Exception as e:
        logger.error(f"麦麦关闭失败: {e}")


async def uvicorn_main():
    global uvicorn_server
    config = uvicorn.Config(
        app="__main__:app",
        host=os.getenv("HOST", "127.0.0.1"),
        port=int(os.getenv("PORT", 8080)),
        reload=os.getenv("ENVIRONMENT") == "dev",
        timeout_graceful_shutdown=5,
        log_config=None,
        access_log=False,
    )
    server = uvicorn.Server(config)
    uvicorn_server = server
    await server.serve()


def check_eula():
    eula_confirm_file = Path("eula.confirmed")
    privacy_confirm_file = Path("privacy.confirmed")
    eula_file = Path("EULA.md")
    privacy_file = Path("PRIVACY.md")

    eula_updated = True
    eula_new_hash = None
    privacy_updated = True
    privacy_new_hash = None

    eula_confirmed = False
    privacy_confirmed = False

    # 首先计算当前EULA文件的哈希值
    if eula_file.exists():
        with open(eula_file, "r", encoding="utf-8") as f:
            eula_content = f.read()
        eula_new_hash = hashlib.md5(eula_content.encode("utf-8")).hexdigest()
    else:
        logger.error("EULA.md 文件不存在")
        raise FileNotFoundError("EULA.md 文件不存在")

    # 首先计算当前隐私条款文件的哈希值
    if privacy_file.exists():
        with open(privacy_file, "r", encoding="utf-8") as f:
            privacy_content = f.read()
        privacy_new_hash = hashlib.md5(privacy_content.encode("utf-8")).hexdigest()
    else:
        logger.error("PRIVACY.md 文件不存在")
        raise FileNotFoundError("PRIVACY.md 文件不存在")

    # 检查EULA确认文件是否存在
    if eula_confirm_file.exists():
        with open(eula_confirm_file, "r", encoding="utf-8") as f:
            confirmed_content = f.read()
        if eula_new_hash == confirmed_content:
            eula_confirmed = True
            eula_updated = False
    if eula_new_hash == os.getenv("EULA_AGREE"):
        eula_confirmed = True
        eula_updated = False

    # 检查隐私条款确认文件是否存在
    if privacy_confirm_file.exists():
        with open(privacy_confirm_file, "r", encoding="utf-8") as f:
            confirmed_content = f.read()
        if privacy_new_hash == confirmed_content:
            privacy_confirmed = True
            privacy_updated = False
    if privacy_new_hash == os.getenv("PRIVACY_AGREE"):
        privacy_confirmed = True
        privacy_updated = False

    # 如果EULA或隐私条款有更新，提示用户重新确认
    if eula_updated or privacy_updated:
        print("EULA或隐私条款内容已更新，请在阅读后重新确认，继续运行视为同意更新后的以上两款协议")
        print(
            f'输入"同意"或"confirmed"或设置环境变量"EULA_AGREE={eula_new_hash}"和"PRIVACY_AGREE={privacy_new_hash}"继续运行'
        )
        while True:
            user_input = input().strip().lower()
            if user_input in ["同意", "confirmed"]:
                # print("确认成功，继续运行")
                # print(f"确认成功，继续运行{eula_updated} {privacy_updated}")
                if eula_updated:
                    print(f"更新EULA确认文件{eula_new_hash}")
                    eula_confirm_file.write_text(eula_new_hash, encoding="utf-8")
                if privacy_updated:
                    print(f"更新隐私条款确认文件{privacy_new_hash}")
                    privacy_confirm_file.write_text(privacy_new_hash, encoding="utf-8")
                break
            else:
                print('请输入"同意"或"confirmed"以继续运行')
        return
    elif eula_confirmed and privacy_confirmed:
        return


def raw_main():
    # 利用 TZ 环境变量设定程序工作的时区
    # 仅保证行为一致，不依赖 localtime()，实际对生产环境几乎没有作用
    if platform.system().lower() != "windows":
        time.tzset()

    check_eula()
    print("检查EULA和隐私条款完成")
    easter_egg()
    init_config()
    init_env()
    load_env()

    # load_logger()

    env_config = {key: os.getenv(key) for key in os.environ}
    scan_provider(env_config)

    # 设置基础配置
    base_config = {
        "websocket_port": int(env_config.get("PORT", 8080)),
        "host": env_config.get("HOST", "127.0.0.1"),
        "log_level": "INFO",
    }

    # 合并配置
    nonebot.init(**base_config, **env_config)

    # 注册适配器
    global driver
    driver = nonebot.get_driver()
    driver.register_adapter(Adapter)

    # 加载插件
    nonebot.load_plugins("src/plugins")


if __name__ == "__main__":
    try:
        raw_main()

        app = nonebot.get_asgi()
        loop = asyncio.new_event_loop()
        asyncio.set_event_loop(loop)

        try:
            loop.run_until_complete(uvicorn_main())
        except KeyboardInterrupt:
            logger.warning("收到中断信号，正在优雅关闭...")
            loop.run_until_complete(graceful_shutdown())
        finally:
            loop.close()

    except Exception as e:
        logger.error(f"主程序异常: {str(e)}")
        if loop and not loop.is_closed():
            loop.run_until_complete(graceful_shutdown())
            loop.close()
        sys.exit(1)