from typing import Annotated

from django.http import HttpRequest
from ninja import Header
from ninja.pagination import PageNumberPagination, paginate

from app.api_base import CamelCaseRouter
from scores.models import Score, Version

from .schemas import ScoreIn, ScoreOut

router = CamelCaseRouter()


def _resolve_version(name: str | None) -> Version:
    if name:
        version, _ = Version.objects.get_or_create(name=name)
        return version
    version = Version.objects.order_by("-created_at").first()
    if version is None:
        version = Version.objects.create(name="default")
    return version


@router.post("", response=ScoreOut)
def submit_score(
    request: HttpRequest,
    payload: ScoreIn,
    x_game_version: Annotated[str | None, Header(alias="X-Game-Version")] = None,
) -> Score:
    version = _resolve_version(x_game_version)
    return Score.objects.create(username=payload.username, points=payload.points, version=version)


@router.get("", response=list[ScoreOut])
@paginate(PageNumberPagination, page_size=20)
def list_scores(
    request: HttpRequest,
    x_game_version: Annotated[str | None, Header(alias="X-Game-Version")] = None,
) -> list[Score]:
    version = _resolve_version(x_game_version)
    return Score.objects.filter(version=version).select_related("version")