from pydantic import BaseModel


class LoginRequest(BaseModel):
    username: str
    password: str


class TokenResponse(BaseModel):
    access_token: str
    token_type: str = "bearer"
    expires_in: int
    user: dict


class UserResponse(BaseModel):
    id: int
    username: str
    role: str
    created_at: str


class CreateUserRequest(BaseModel):
    username: str
    password: str
    role: str = "viewer"


class ChangePasswordRequest(BaseModel):
    current_password: str
    new_password: str