import shutil
from pathlib import Path
import os
import string


def code_make(dir_path, replace_dic={}, save_path="temp"):
    """
    增删改查代码生成
    @param dir_path: 代码模板
    @param replace_dic: 需要替换的名称
    @param save_path: 保存路径
    """
    code_path = Path(dir_path)
    if not code_path.exists():
        os.makedirs(code_path)
    if code_path.is_dir():
        save_path = Path(save_path)
        shutil.copytree(code_path, save_path)
        for root, dirs, files in os.walk(save_path):
            for file in files:
                file_path = Path(os.path.join(root, file))
                item_code_str = file_path.read_text(encoding="utf-8")
                new_code_str = item_code_str
                for replace_word, replaced_word in replace_dic.items():
                    new_code_str = new_code_str.replace(replace_word, replaced_word)
                with open(file_path, "w", encoding="utf-8") as f:
                    f.write(new_code_str)


def to_snake(name):
    new_name = ""
    for i in range(len(name)):
        k = name[i]
        if name[i] in string.ascii_letters:
            if name[i].isupper():
                if i == 0:
                    k = name[i].lower()
                else:
                    k = '_' + name[i].lower()

        new_name += k
    return new_name


def to_upper_camel_case(name):
    items = name.split("_")
    new_name = ""
    for item in items:
        new_name += item[0].upper() + item[1:]
    return new_name


def table_str_convert(table_str, key='id'):
    replace_dic = {
        'varchar': 'String',
        'char': 'String',
        'date': 'Date',
        'datetime': 'DateTime',
        'text': 'Text',
        'int': 'Integer',
        'double': 'Double'
    }
    new_lines = []
    for line in table_str.split("\n"):
        if line:
            cols = line.split("\t")
            col_name = cols[0].replace(' ', "").replace("-", '_')
            col_type = cols[1].replace(" ", '')
            col_type = col_type.replace(col_type.split('(')[0], replace_dic[col_type.split('(')[0]])
            comment = cols[3]
            comment_str = f', comment="{comment}"' if comment.replace(" ", '') else ""
            primary_key_str = f', primary_key=True' if col_name == key else ''
            new_line = f'{col_name} = Column({col_type}{primary_key_str}{comment_str})'
            new_lines.append(new_line)
    new_content = "\n    ".join(new_lines)
    return new_content


def make_info_str(table_str, key='id'):
    replace_dic = {
        'varchar': 'str',
        'char': 'str',
        'text': 'str',
        'double': 'float'
    }
    info_lines = []
    add_info_lines = []
    for line in table_str.split("\n"):
        if line:
            cols = line.split("\t")
            col_name = cols[0].replace(' ', "").replace("-", '_')
            col_type = cols[1].replace(" ", '')
            if col_type.split('(')[0] in replace_dic:
                col_type = replace_dic[col_type.split('(')[0]]
            # comment = col_type[3]
            # comment_str = f',comment="{col_type[3]}"' if comment else ""
            # primary_key_str = f',primary_key=True' if col_name == key else ''
            new_line = f'{col_name}: Optional[{col_type}]'
            info_lines.append(new_line)

            if col_name != "id":
                add_info_lines.append(new_line)

    info_content = "\n    ".join(info_lines)
    add_info_content = "\n    ".join(add_info_lines)
    return info_content, add_info_content


def crud_code_make(table_name: str, chinese_name, table_str, path: str):
    model_content = table_str_convert(table_str)
    info_content, add_info_content = make_info_str(table_str)
    upper_camel_case_name = to_upper_camel_case(table_name)
    code_make("Utils/CodeMake/CrudTemplate",
              {"EditItemType": upper_camel_case_name,
               "edit_item_type": table_name,
               "修改项类型": chinese_name,
               '"""model_content"""': model_content,
               '"""info_content"""': info_content,
               '"""add_info_content"""': add_info_content,
               }
              , f"{path}/{upper_camel_case_name}")