#  -------------------------------
#  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()