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

class UserRoles(str, Enum):
    admin = "admin"
    user = "user"

class UserBase(BaseModel):
    username: str = Field(..., min_length=1, max_length=50)
    email: EmailStr = Field(..., max_length=255)
    first_name: str = Field(..., max_length=50)
    last_name: str = Field(..., max_length=50)
    phone_number: str = Field(..., max_length=20)
    role: UserRoles
    is_active: bool = True
    is_verified: bool = False

class UserCreate(UserBase):
    password: str = Field(..., min_length=8, max_length=255)
    
    class Config:
        schema_extra = {
            "example": {
                "username": "johndoe",
                "email": "john@example.com",
                "password": "securepass123",
                "first_name": "John",
                "last_name": "Doe",
                "phone_number": "+1234567890",
                "role": "user",
                "is_active": True,
                "is_verified": False
            }
        }

class UserResponse(UserBase):
    id: int
    last_login: Optional[datetime]
    created_at: datetime
    updated_at: datetime

    class Config:
        orm_mode = True
        schema_extra = {
            "example": {
                "id": 1,
                "username": "johndoe",
                "email": "john@example.com",
                "first_name": "John", 
                "last_name": "Doe",
                "phone_number": "+1234567890",
                "role": "user",
                "is_active": True,
                "is_verified": False,
                "last_login": "2023-01-01T00:00:00",
                "created_at": "2023-01-01T00:00:00",
                "updated_at": "2023-01-01T00:00:00"
            }
        }