from pydantic import BaseModel, EmailStr, Field
from datetime import datetime
from typing import Optional, List
from enum import Enum

class UserRole(str, Enum):
    SYSTEM_ADMIN = "system_admin"
    GROUP_ADMIN = "group_admin"
    USER = "user"

class UserBase(BaseModel):
    email: EmailStr
    username: Optional[str] = None
    full_name: Optional[str] = None
    role: UserRole = UserRole.USER
    is_active: bool = True
    phone_number: Optional[str] = None
    birth_date: Optional[str] = None
    gender: Optional[str] = None
    profile_picture: Optional[str] = None
    organization: Optional[str] = None

class UserCreate(BaseModel):
    email: EmailStr
    password: str
    name: str
    organization: Optional[str] = None

class UserUpdate(BaseModel):
    full_name: Optional[str] = None
    phone_number: Optional[str] = None
    birth_date: Optional[str] = None
    gender: Optional[str] = None
    profile_picture: Optional[str] = None

class UserInDB(UserBase):
    id: str = Field(alias="_id")
    hashed_password: str
    created_at: datetime
    updated_at: datetime
    last_login: Optional[datetime] = None
    
    class Config:
        populate_by_name = True

class User(UserBase):
    id: str
    created_at: datetime
    updated_at: datetime
    last_login: Optional[datetime] = None

class UserPermissions(BaseModel):
    single_sign_on: bool = True
    share_name: bool = True
    share_gender: bool = False
    share_birth_date: bool = False
    share_email: bool = True
    share_phone: bool = False