from __future__ import annotations

import pytest

from core.config.settings import QdrantSettings
from services.base.qdrant import QdrantService


class _FakeCollection:
    def __init__(self, name: str) -> None:
        self.name = name


class _FakeCollections:
    def __init__(self) -> None:
        self.collections = [_FakeCollection("default")]


class _FakeQdrantClient:
    def get_collections(self) -> _FakeCollections:
        return _FakeCollections()


@pytest.mark.asyncio
async def test_initialize_success(monkeypatch: pytest.MonkeyPatch) -> None:
    service = QdrantService(settings=QdrantSettings(host="localhost", port=6333))

    def _build_client(_: QdrantService) -> _FakeQdrantClient:
        return _FakeQdrantClient()

    monkeypatch.setattr(QdrantService, "_build_client", _build_client)

    result = await service.initialize()

    assert result is True
    assert service.is_initialized is True

    health = await service.health_check()
    assert health["status"] == "healthy"


@pytest.mark.asyncio
async def test_initialize_failure(monkeypatch: pytest.MonkeyPatch) -> None:
    service = QdrantService(settings=QdrantSettings(host="localhost", port=6333))

    def _build_client(_: QdrantService) -> _FakeQdrantClient:
        raise RuntimeError("boom")

    monkeypatch.setattr(QdrantService, "_build_client", _build_client)

    result = await service.initialize()

    assert result is False
    assert service.is_initialized is False


@pytest.mark.asyncio
async def test_health_check_returns_unhealthy_when_not_initialized() -> None:
    service = QdrantService(settings=QdrantSettings(host="localhost", port=6333))

    health = await service.health_check()

    assert health["status"] == "unhealthy"


@pytest.mark.asyncio
async def test_close_is_idempotent() -> None:
    service = QdrantService(settings=QdrantSettings(host="localhost", port=6333))

    assert await service.close() is True
    assert service.is_initialized is False


def test_get_client_raises_before_init() -> None:
    service = QdrantService(settings=QdrantSettings(host="localhost", port=6333))

    with pytest.raises(RuntimeError):
        service.get_client()