"""Bus schedule model."""
from sqlmodel import SQLModel, Field, Column
from datetime import datetime, time
from typing import Optional
from enum import Enum
from uuid import UUID, uuid4
from sqlalchemy import DateTime, func


class BusScheduleType(str, Enum):
    """Schedule type enumeration."""
    WEEKDAY = "weekday"
    WEEKEND = "weekend"
    HOLIDAY = "holiday"


class BusSchedule(SQLModel, table=True):
    """Bus schedule model."""
    
    __tablename__ = "bus_schedules"
    
    id: Optional[UUID] = Field(default_factory=uuid4, primary_key=True)
    route_id: UUID = Field(foreign_key="routes.id")
    departure_time: time
    frequency_minutes: Optional[int] = 30
    schedule_type: BusScheduleType = BusScheduleType.WEEKDAY
    is_active: bool = Field(default=True)
    is_published: bool = Field(default=False)
    notes: Optional[str] = None
    created_at: Optional[datetime] = Field(sa_column=Column(DateTime, server_default=func.now()))