smart-question-bank/SERVER/app/utils/validation_util.py

import re
from typing import Optional, Union
from datetime import datetime


class ValidationUtil:
    """验证工具类"""

    @staticmethod
    def is_email(email: str) -> bool:
        """验证邮箱格式
        
        Args:
            email: 邮箱地址
            
        Returns:
            bool: 是否为有效邮箱
        """
        pattern = r'^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$'
        return bool(re.match(pattern, email))

    @staticmethod
    def is_phone(phone: str) -> bool:
        """验证手机号格式
        
        Args:
            phone: 手机号码
            
        Returns:
            bool: 是否为有效手机号
        """
        pattern = r'^1[3-9]\d{9}$'
        return bool(re.match(pattern, phone))

    @staticmethod
    def is_id_card(id_card: str) -> bool:
        """验证身份证号格式
        
        Args:
            id_card: 身份证号码
            
        Returns:
            bool: 是否为有效身份证号
        """
        pattern = r'^\d{17}[\dXx]$'
        return bool(re.match(pattern, id_card))

    @staticmethod
    def is_date(date_str: str, fmt: str = '%Y-%m-%d') -> bool:
        """验证日期格式
        
        Args:
            date_str: 日期字符串
            fmt: 日期格式
            
        Returns:
            bool: 是否为有效日期
        """
        try:
            datetime.strptime(date_str, fmt)
            return True
        except ValueError:
            return False

    @staticmethod
    def is_number(value: Union[str, int, float]) -> bool:
        """验证是否为数字
        
        Args:
            value: 输入值
            
        Returns:
            bool: 是否为数字
        """
        if isinstance(value, (int, float)):
            return True
        try:
            float(value)
            return True
        except ValueError:
            return False

    @staticmethod
    def is_in_range(value: Union[int, float],
                    min_val: Optional[Union[int, float]] = None,
                    max_val: Optional[Union[int, float]] = None) -> bool:
        """验证数值是否在指定范围内
        
        Args:
            value: 要验证的值
            min_val: 最小值
            max_val: 最大值
            
        Returns:
            bool: 是否在范围内
        """
        if min_val is not None and value < min_val:
            return False
        if max_val is not None and value > max_val:
            return False
        return True

    @staticmethod
    def is_empty(value: Optional[Union[str, list, dict]]) -> bool:
        """验证值是否为空
        
        Args:
            value: 输入值
            
        Returns:
            bool: 是否为空
        """
        if value is None:
            return True
        if isinstance(value, str) and not value.strip():
            return True
        if isinstance(value, (list, dict)) and not value:
            return True
        return False