#  -------------------------------
#  Difficult Rocket
#  Copyright © 2020-2023 by shenjackyuanjie 3695888@qq.com
#  All rights reserved
#  -------------------------------

import sys
import importlib
import traceback
import contextlib
import importlib.util
from pathlib import Path
from typing import Optional, List, Tuple

from Difficult_Rocket.api.types import Options, Version


__all__ = [
    'DR_runtime'
]


class _DR_runtime(Options):
    """
    DR 的运行时配置 / 状态
    """
    name = 'DR Runtime'

    language: str = 'zh-CN'
    mod_path: str = './mods'
    DR_Mod_List: List[Tuple[str, Version]] = []  # DR Mod 列表 (name, version)

    # run status
    start_time_ns: Optional[int] = None
    client_setup_cause_ns: Optional[int] = None
    server_setup_cause_ns: Optional[int] = None

    def load_file(self) -> bool:
        with contextlib.suppress(FileNotFoundError):
            with open('./config/main.toml', 'r', encoding='utf-8') as f:
                import rtoml
                config_file = rtoml.load(f)
                self.language = config_file['runtime']['language']
                self.mod_path = config_file['game']['mods']['path']
                return True
        return False

    def find_mods(self) -> List[str]:
        mods = []
        mod_path = Path(self.mod_path)
        if not mod_path.exists():
            mod_path.mkdir()
            return []
        paths = mod_path.iterdir()
        sys.path.append(self.mod_path)
        for mod_path in paths:
            try:
                if mod_path.is_dir() and mod_path.name != '__pycache__':  # 处理文件夹 mod
                    if importlib.util.find_spec(mod_path.name) is not None:
                        mods.append(mod_path.name)
                    else:
                        print(f'can not import mod {mod_path} because importlib can not find spec')
                elif mod_path.suffix in ('.pyz', '.zip'):  # 处理压缩包 mod
                    if importlib.util.find_spec(mod_path.name) is not None:
                        mods.append(mod_path.name)
                elif mod_path.suffix == '.pyd':  # pyd 扩展 mod
                    if importlib.util.find_spec(mod_path.name) is not None:
                        mods.append(mod_path.name)
                elif mod_path.suffix == '.py':  # 处理单文件 mod
                    print(f'importing mod {mod_path=} {mod_path.stem}')
                    if importlib.util.find_spec(mod_path.stem) is not None:
                        mods.append(mod_path.stem)
            except ImportError:
                print(f'ImportError when loading mod {mod_path}')
                traceback.print_exc()
        return mods


DR_runtime = _DR_runtime()