from pydantic import BaseModel, Field, field_validator


class LoginRequest(BaseModel):
    password: str = Field(..., min_length=1, max_length=100)


class LoginResponse(BaseModel):
    message: str = "登录成功"


class ChangePasswordRequest(BaseModel):
    old_password: str = Field(..., min_length=1, max_length=100)
    new_password: str = Field(..., min_length=6, max_length=100)

    @field_validator("new_password")
    @classmethod
    def validate_password_strength(cls, v: str) -> str:
        if len(v) < 6:
            raise ValueError("密码长度至少6位")
        if len(set(v)) < 3:
            raise ValueError("密码不能过于简单（需包含至少3种不同字符）")
        return v


class AuthStatusResponse(BaseModel):
    authenticated: bool
    user_id: str