"""
工程文件处理方法
"""
from watermark_generate.exceptions import BusinessException


def replace_block_in_file(file_path, old_block, new_block):
    """
    修改指定文件的代码块
    :param file_path: 待修改的文件路径
    :param old_block: 原始代码块
    :param new_block: 修改后的代码块
    :return:
    """
    # 读取文件内容
    with open(file_path, "r") as file:
        file_content_str = file.read()

    file_content_str = file_content_str.replace(old_block, new_block)

    # 写回文件
    with open(file_path, 'w', encoding='utf-8') as file:
        file.write(file_content_str)


def append_block_in_file(file_path, new_block):
    """
    向文件末尾追加代码块
    :param file_path: 待修改的文件路径
    :param new_block: 追加的代码块
    :return:
    """
    try:
        with open(file_path, 'a') as file:
            file.write('\n' + new_block)
    except Exception as e:
        raise BusinessException(message=f"追加文件内容失败, {e}", code=-1)


def insert_code_after_line(file_path, line_number, code_block):
    # 读取文件内容
    with open(file_path, 'r') as file:
        lines = file.readlines()

    # 确保 line_number 合法
    if line_number < 1 or line_number > len(lines):
        print(f"Line number {line_number} is out of range.")
        return

    # 将代码块拆分成多行
    code_lines = code_block.splitlines(True)

    # 在指定行后插入代码块
    lines[line_number:line_number] = code_lines

    # 写回文件
    with open(file_path, 'w') as file:
        file.writelines(lines)