"""
Contact models — People and organizations you call.
"""

from datetime import datetime
from typing import Optional

from pydantic import BaseModel, Field


class PhoneNumber(BaseModel):
    """A phone number associated with a contact."""

    number: str  # E.164 format
    label: str = "main"  # main, mobile, work, home, fax, etc.
    primary: bool = False


class ContactBase(BaseModel):
    """Shared contact fields."""

    name: str
    phone_numbers: list[PhoneNumber]
    category: Optional[str] = None  # personal / business / service
    routing_preference: Optional[str] = None  # how to handle their calls
    notes: Optional[str] = None


class Contact(ContactBase):
    """Full contact model."""

    id: str
    call_count: int = 0
    last_call: Optional[datetime] = None
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None

    @property
    def primary_number(self) -> Optional[str]:
        """Get the primary phone number."""
        for pn in self.phone_numbers:
            if pn.primary:
                return pn.number
        return self.phone_numbers[0].number if self.phone_numbers else None


class ContactCreate(ContactBase):
    """Request model for creating a contact."""

    pass


class ContactUpdate(BaseModel):
    """Request model for updating a contact."""

    name: Optional[str] = None
    phone_numbers: Optional[list[PhoneNumber]] = None
    category: Optional[str] = None
    routing_preference: Optional[str] = None
    notes: Optional[str] = None