"""User-related Pydantic schemas."""

from datetime import datetime
from pydantic import BaseModel, EmailStr, Field
from ..models.user import UserRole


class UserBase(BaseModel):
    """Base user schema with common fields."""
    username: str = Field(..., min_length=3, max_length=255)
    email: EmailStr
    full_name: str | None = None
    role: UserRole = UserRole.TECHNICIAN


class UserCreate(UserBase):
    """Schema for creating a new user."""
    password: str = Field(..., min_length=8)
    tenant_id: int | None = None


class UserUpdate(BaseModel):
    """Schema for updating a user."""
    email: EmailStr | None = None
    full_name: str | None = None
    role: UserRole | None = None
    is_active: bool | None = None
    password: str | None = Field(None, min_length=8)


class UserResponse(UserBase):
    """Schema for user response."""
    id: int
    tenant_id: int | None
    is_active: bool
    last_login: datetime | None
    created_at: datetime
    updated_at: datetime | None

    class Config:
        from_attributes = True


class UserLogin(BaseModel):
    """Schema for login request."""
    username: str
    password: str


class Token(BaseModel):
    """Schema for JWT token response."""
    access_token: str
    refresh_token: str
    token_type: str = "bearer"


class TokenPayload(BaseModel):
    """Schema for decoded JWT payload."""
    sub: int  # user_id
    username: str
    role: str
    tenant_id: int | None
    exp: datetime