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

"""
writen by shenjackyuanjie
mail:   3695888@qq.com
github: @shenjackyuanjie
gitee:  @shenjackyuanjie
"""

import sys
import time
import logging
import traceback
import importlib
import importlib.util
import logging.config
import multiprocessing

from io import StringIO
from pathlib import Path
from typing import TYPE_CHECKING, List, Optional, Dict, TypeVar

if TYPE_CHECKING:
    from Difficult_Rocket.api.mod import ModInfo
else:
    ModInfo = TypeVar('ModInfo')
from Difficult_Rocket.utils import tools
from Difficult_Rocket.api.types import Options
from Difficult_Rocket.utils.translate import tr
from Difficult_Rocket.runtime import DR_runtime
from Difficult_Rocket.utils.thread import new_thread
from Difficult_Rocket.crash import write_info_to_cache
from Difficult_Rocket import client, server, DR_status


class Console(Options):
    name = 'python stdin console'

    running: bool = False
    caches: List[str] = []

    @new_thread('python console', daemon=True, log_thread=True)
    def main(self):
        while self.running:
            try:
                get_str = input('>>>')
            except (EOFError, KeyboardInterrupt):
                get_str = 'stop'
            self.caches.append(get_str)
            if get_str == 'stop':
                self.running = False
                break

    def start(self):
        self.running = True
        self.main()

    def stop(self):
        self.running = False

    def get_command(self) -> Optional[str]:
        return self.caches.pop(0) if self.caches else None

    def new_command(self) -> None:
        return None


class Game(Options):
    name = 'MainGame'

    client: client.Client
    server: server.Server
    console: Console
    console_class: Console = Console

    main_config: Dict
    logging_config: Dict
    logger: logging.Logger

    mod_module: List["ModInfo"] = []

    def init_logger(self) -> None:
        log_path = self.logging_config['handlers']['file']['filename']
        log_path = f"logs/{log_path.format(time.strftime('%Y-%m-%d %H-%M-%S' , time.gmtime(DR_runtime.start_time_ns / 1000_000_000)))}"
        mkdir = False
        if not Path('logs/').is_dir():
            Path('logs/').mkdir()
            mkdir = True
        self.logging_config['handlers']['file']['filename'] = log_path
        logging.config.dictConfig(self.logging_config)
        self.logger = logging.getLogger('main')
        if mkdir:
            self.logger.info(tr().main.logger.mkdir())

    def init_mods(self) -> None:
        """验证/加载 mod"""
        self.mod_module = []
        mods = []
        mod_path = Path(DR_runtime.mod_path)
        if not mod_path.exists():
            self.logger.info(tr().main.mod.find.faild.no_mod_folder())
            return
        # 寻找有效 mod
        paths = mod_path.iterdir()
        sys.path.append(DR_runtime.mod_path)
        for mod_path in paths:
            try:
                if mod_path.name == '__pycache__':
                    continue
                self.logger.info(tr().main.mod.find.start().format(mod_path))
                if mod_path.is_dir():
                    if importlib.util.find_spec(mod_path.name) is not None:
                        mods.append(mod_path.name)
                    else:
                        self.logger.warning(tr().main.mod.load.faild.info().format(mod_path.name, tr().main.mod.find.faild.no_spec()))
                elif mod_path.suffix in ('.pyz', '.zip', '.pyd', '.py'):
                    if importlib.util.find_spec(mod_path.name) is not None:
                        mods.append(mod_path.name)
            except ImportError as e:
                self.logger.warning(tr().main.mod.find.faild().format(mod_path, e))
        self.logger.info(tr().main.mod.find.done())
        # 加载有效 mod
        module = []
        for mod in mods:
            try:
                self.logger.info(tr().main.mod.load.start().format(mod))
                mod_module = importlib.import_module(mod)
                if not hasattr(mod_module, "mod_class"):
                    self.logger.warning(tr().main.mod.load.faild.info().format(mod, tr().main.mod.load.faild.no_mod_class()))
                    del mod_module  # 释放内存
                    continue
                mod_class: type(ModInfo) = mod_module.mod_class
                mod_class = mod_class()
                module.append(mod_class)
                self.logger.info(tr().main.mod.load.info().format(mod_class.mod_id, mod_class.version))
            except ImportError as e:
                self.logger.warning(tr().main.mod.load.faild.info().format(mod, e))
        self.logger.info(tr().main.mod.load.done())
        self.mod_module = module
        mod_list = []
        for mod in module:
            mod_list.append((mod.mod_id, mod.version))
        # 调用 on_load
        self.dispatch_event('on_load', game=self)
        DR_runtime.DR_Mod_List = mod_list

    def init_console(self) -> None:
        self.console = self.console_class()
        self.console.start()

    def start(self):
        self.server.run()
        if DR_status.use_multiprocess:
            try:
                game_process = multiprocessing.Process(target=self.client.start, name='pyglet app')
                game_process.start()
                game_process.join()
            except Exception:
                return -1
            else:
                return 1
        else:
            self.client.start()

    def dispatch_event(self, event_name: str, *args, **kwargs) -> None:
        """向 mod 分发事件"""
        for mod in self.mod_module:
            if hasattr(mod, event_name):
                try:
                    getattr(mod, event_name)(*args, **kwargs)
                except Exception:
                    error = traceback.format_exc()
                    self.logger.error(tr().main.mod.event.error().format(event_name, error, mod.mod_id))

    def log_env(self) -> None:
        cache_steam = StringIO()
        write_info_to_cache(cache_steam)
        text = cache_steam.getvalue()
        self.logger.info(text)
        self.flush_option()
        config_cache = self.logging_config.copy()
        self.logging_config = {"logging_config": "too long to show"}
        self.logger.info(f"\n{self.as_markdown()}")
        self.logging_config = config_cache

    def setup(self) -> None:
        self.client = client.Client(game=self, net_mode='local')
        self.server = server.Server(net_mode='local')

    def init(self, **kwargs) -> bool:
        self.load_file()
        self.setup()
        self.log_env()
        return True

    def load_file(self) -> bool:
        """加载文件"""
        self.logging_config = tools.load_file('configs/logger.toml')
        self.init_logger()
        self.init_mods()
        self.init_console()
        return True