import json
import os
import xml.etree.ElementTree as ET

""" FileUtils """
""" 文件操作 """


class FileUtils:

    # 初始化 configs.json 读取要用到的路径
    def __init__(self):
        print("init FileUtils...")
        self.__configsChanged = False
        try:
            with open("configs.json", "r") as config_file:
                configs = json.load(config_file)
                paths = configs['paths']
                # 关卡red文件夹
                self.__redLevelConfigDir = paths["redreamLevelConfigDir"]
                # 关卡模板red文件夹
                self.__redLevelTemplateDir = paths["redreamLevelTemplateDir"]
                # 盘子位置情况red文件夹
                self.__plateConfigDir = paths["plateConfigDir"]
                # 关卡json文件夹
                self.__jsonLevelConfigDir = paths["jsonLevelConfigDir"]
        except FileNotFoundError:
            print(f"文件{"configs.json"}不存在, 使用默认相关路径...")
            # 关卡red文件夹
            self.__redLevelConfigDir = "/Users/red/ScrewGame/Resources/res_ScrewGame/关卡/"
            # 关卡模板red文件夹
            self.__redLevelTemplateDir = "/Users/red/ScrewGame/Resources/res_ScrewGame/关卡/关卡模板/"
            # 盘子位置情况red文件夹
            self.__plateConfigDir = "/Users/red/ScrewGame/Resources/res_ScrewGame/ccb/盘子上位置情况/"
            # 关卡json文件夹
            self.__jsonLevelConfigDir = "/Users/red/ScrewGame/Resources/res_ScrewGame/config/最终关卡配置/"

    """ 展示当前默认路径和设置 提供修改的选项 """

    def greet(self):
        print("Hello!")
        print(f"关卡red文件目录为{self.__redLevelConfigDir}")
        print(f"模板red文件目录为{self.__redLevelTemplateDir}")
        print(f"盘子位置情况red文件目录为{self.__plateConfigDir}")
        print(f"关卡json文件目录为{self.__jsonLevelConfigDir}")
        # TODO: 提供修改的选项

    """ 将xml文件转化为python内置数据结构 """

    def xml_to_py_object(self, root: ET.Element) -> str | dict | list | None:
        if root is None:
            return None
        root_tag = root.tag
        # print(root_tag)
        res_list = []
        res_dict = {}
        if root_tag == 'dict':
            idx = 0
            while idx < len(root):
                if root[idx].tag == 'key':
                    next_tag = root[idx + 1].tag
                    if next_tag == 'true':
                        res_dict[root[idx].text] = True
                    elif next_tag == 'false':
                        res_dict[root[idx].text] = False
                    else:
                        res_dict[root[idx].text] = self.xml_to_py_object(root[idx + 1])
                    idx += 1
                idx += 1
            return res_dict
        elif root_tag == 'array':
            for child in root:
                res_list.append(self.xml_to_py_object(child))
            return res_list
        else:
            return root.text

    """ 获得red(xml)文件的根 """

    def get_root_of_red_file(self, file_path: str) -> ET.Element | None:
        if os.path.exists(file_path):
            return ET.parse(file_path).getroot()[0]
        else:
            print(f"{file_path}不存在!")
            return None

    """ 将字典写为json文件 """

    def write_dict_to_json(self, dic: dict, path: str) -> None:
        with open(path, "w") as file:
            json.dump(dic, file)

    """ 退出时如果修改了默认相关参数 写入到文件中 """

    def update_config_file(self):
        if self.__configsChanged:
            print("update config file...")
            configs = {
                "paths": {
                    "redreamLevelConfigDir": self.__redLevelConfigDir,
                    "redreamLevelTemplateDir": self.__redLevelTemplateDir,
                    "plateConfigDir": self.__plateConfigDir,
                    "jsonLevelConfigDir": self.__jsonLevelConfigDir
                },
                "nScrewTypes": self.__nScrewTypes
            }
            self.write_dict_to_json(configs, "./configs.json")
        else:
            print("configs未被改变, 不做update")

    """ 将目录路径与关卡号组合在一起得到完整路径 """

    def get_template_file_full_path(self, template_id_list: list) -> list:
        ret = [f"{self.__redLevelTemplateDir}{"模板"}{ID}{".red"}" for ID in template_id_list]
        return ret

    """ 将盘子ID和盘子上位置情况目录组合在一起得到完整路径 """

    def get_plate_file_full_path(self, plate_configs_of_this_level: list) -> list:
        plate_id_list = [plate_config['plateId'] for plate_config in plate_configs_of_this_level]
        ret = [f"{self.__plateConfigDir}{"SG-盘子"}{ID}{"情况.red"}" for ID in plate_id_list]
        return ret

    """ 根据关卡号生成json文件的完整路径 """

    def generate_level_json_file_full_path(self, level_id: str) -> str:
        ret = self.__jsonLevelConfigDir + f"关卡{level_id}.json"
        return ret

    """ 根据关卡red文件目录组合出文件的完整地址 """

    def get_all_level_red_file_full_paths(self):
        ret = []
        for file_name in os.listdir(self.__redLevelConfigDir):
            if file_name[-3:] == "red":
                ret.append(self.__redLevelConfigDir + file_name)
        return ret