from pydantic import BaseModel, Field, EmailStr
from typing import Optional

class PersonBase(BaseModel):
    first_name: str = Field(..., min_length=1, description="Person's first name")
    last_name: str = Field(..., min_length=1, description="Person's last name")
    age: int = Field(..., gt=0, description="Person's age")
    email: EmailStr = Field(..., description="Person's email address")
    phone: Optional[str] = Field(None, description="Person's phone number")
    is_active: bool = Field(default=True, description="Active status")

class PersonCreate(PersonBase):
    class Config:
        schema_extra = {
            "example": {
                "first_name": "John",
                "last_name": "Doe",
                "age": 30,
                "email": "john.doe@example.com",
                "phone": "+1234567890",
                "is_active": True
            }
        }

class Person(PersonBase):
    id: int = Field(..., description="Person's unique identifier")

    class Config:
        orm_mode = True
        schema_extra = {
            "example": {
                "id": 1,
                "first_name": "John",
                "last_name": "Doe",
                "age": 30,
                "email": "john.doe@example.com",
                "phone": "+1234567890",
                "is_active": True
            }
        }