from datetime import datetime
from typing import Optional
from fastapi import APIRouter, Depends, Query
from sqlalchemy import select, desc
from sqlalchemy.ext.asyncio import AsyncSession

from app.database import get_db
from app.models import Event
from app.schemas import EventResponse

router = APIRouter()


@router.get("", response_model=list[EventResponse])
async def get_events(
    type: Optional[str] = None,
    vehicle_id: Optional[int] = None,
    from_time: Optional[datetime] = Query(None, alias="from"),
    to_time: Optional[datetime] = Query(None, alias="to"),
    limit: int = Query(100, le=1000),
    db: AsyncSession = Depends(get_db)
):
    """Получить список событий"""
    query = select(Event)

    if type:
        query = query.where(Event.type == type)
    if vehicle_id:
        query = query.where(Event.vehicle_id == vehicle_id)
    if from_time:
        query = query.where(Event.timestamp >= from_time)
    if to_time:
        query = query.where(Event.timestamp <= to_time)

    query = query.order_by(desc(Event.timestamp)).limit(limit)

    result = await db.execute(query)
    events = result.scalars().all()

    return events


@router.get("/vehicles/{vehicle_id}/events", response_model=list[EventResponse])
async def get_vehicle_events(
    vehicle_id: int,
    type: Optional[str] = None,
    limit: int = Query(100, le=1000),
    db: AsyncSession = Depends(get_db)
):
    """Получить события конкретного транспортного средства"""
    query = select(Event).where(Event.vehicle_id == vehicle_id)

    if type:
        query = query.where(Event.type == type)

    query = query.order_by(desc(Event.timestamp)).limit(limit)

    result = await db.execute(query)
    events = result.scalars().all()

    return events