import uuid

from fastapi import APIRouter, status

from app.api.deps import CurrentUser, SessionDep
from app.schemas.event import EventCreate, EventRead, EventUpdate
from app.services import event_service, tree_service

router = APIRouter(prefix="/trees", tags=["events"])


@router.post("/{tree_id}/events", response_model=EventRead, status_code=status.HTTP_201_CREATED)
async def create_event(
    tree_id: uuid.UUID, data: EventCreate, session: SessionDep, current: CurrentUser
) -> EventRead:
    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
    event = await event_service.create_event(
        session, actor=current, tree=tree, **data.model_dump()
    )
    return EventRead.model_validate(event)


@router.get("/{tree_id}/events", response_model=list[EventRead])
async def list_tree_events(
    tree_id: uuid.UUID, session: SessionDep, current: CurrentUser
) -> list[EventRead]:
    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
    events = await event_service.list_events(session, viewer_id=current.id, tree=tree)
    return [EventRead.model_validate(e) for e in events]


@router.get("/{tree_id}/persons/{person_id}/events", response_model=list[EventRead])
async def list_person_events(
    tree_id: uuid.UUID, person_id: uuid.UUID, session: SessionDep, current: CurrentUser
) -> list[EventRead]:
    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
    events = await event_service.list_events_for_person(
        session, viewer_id=current.id, tree=tree, person_id=person_id
    )
    return [EventRead.model_validate(e) for e in events]


@router.patch("/{tree_id}/events/{event_id}", response_model=EventRead)
async def update_event(
    tree_id: uuid.UUID,
    event_id: uuid.UUID,
    data: EventUpdate,
    session: SessionDep,
    current: CurrentUser,
) -> EventRead:
    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
    event = await event_service.update_event(
        session,
        actor=current,
        tree=tree,
        event_id=event_id,
        changes=data.model_dump(exclude_unset=True),
    )
    return EventRead.model_validate(event)


@router.delete("/{tree_id}/events/{event_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_event(
    tree_id: uuid.UUID, event_id: uuid.UUID, session: SessionDep, current: CurrentUser
) -> None:
    tree = await tree_service.get_tree(session, viewer_id=current.id, tree_id=tree_id)
    await event_service.delete_event(session, actor=current, tree=tree, event_id=event_id)