"""User Schemas"""
from pydantic import BaseModel, EmailStr, validator
from typing import Optional
from datetime import datetime
from uuid import UUID


class UserBase(BaseModel):
    email: EmailStr
    display_name: Optional[str] = None
    role: str = "user"
    department: Optional[str] = None


class UserCreate(UserBase):
    azure_oid: Optional[str] = None
    password: Optional[str] = None  # Optional for SSO users


class UserSignUp(BaseModel):
    """Schema for user registration"""
    email: EmailStr
    password: str
    display_name: str

    @validator("password")
    def validate_password(cls, v):
        if len(v) < 8:
            raise ValueError("Password must be at least 8 characters")
        return v


class UserLogin(BaseModel):
    """Schema for user login"""
    email: EmailStr
    password: str


class UserUpdate(BaseModel):
    display_name: Optional[str] = None
    role: Optional[str] = None
    department: Optional[str] = None
    is_active: Optional[bool] = None
    avatar_url: Optional[str] = None


class PasswordChange(BaseModel):
    """Schema for changing password"""
    current_password: str
    new_password: str

    @validator("new_password")
    def validate_password(cls, v):
        if len(v) < 8:
            raise ValueError("Password must be at least 8 characters")
        return v


class UserResponse(UserBase):
    id: UUID
    azure_oid: Optional[str] = None
    avatar_url: Optional[str] = None
    is_active: bool
    last_login_at: Optional[datetime] = None
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class TokenResponse(BaseModel):
    """Schema for JWT token response"""
    access_token: str
    token_type: str = "bearer"
    expires_in: int
    user: UserResponse