"""Tests for HLTB search, batch-fetch, and page parsing — part 2."""

from __future__ import annotations

import asyncio
from typing import TYPE_CHECKING, Any, Self
from unittest.mock import MagicMock

import aiohttp

from steam_backlog_enforcer._hltb_search import (
    _search_one,
    _SearchCtx,
)

if TYPE_CHECKING:
    from collections.abc import Callable


class _FakeResponse:
    """Async context manager mimicking aiohttp response."""

    def __init__(self, status: int, json_data: dict[str, Any] | None = None) -> None:
        """Test init."""
        self.status = status
        self._json_data = json_data or {}

    async def __aenter__(self) -> Self:
        """Test aenter."""
        return self

    async def __aexit__(self, *args: object) -> None:
        """Test aexit."""

    async def json(self) -> dict[str, Any]:
        """Test json."""
        return self._json_data


def _make_session(resp: _FakeResponse) -> MagicMock:
    session = MagicMock()
    session.post.return_value = resp
    return session


def _make_ctx(
    session: MagicMock,
    *,
    cache: dict[int, float] | None = None,
    progress_cb: Callable[..., object] | None = None,
) -> _SearchCtx:
    return _SearchCtx(
        session=session,
        search_url="https://example.com/search",
        headers={},
        cache=cache if cache is not None else {},
        counter={"done": 0, "found": 0, "failed": 0},
        total=1,
        progress_cb=progress_cb,
    )


class TestSearchOne:
    """Tests for _search_one."""

    def test_found(self) -> None:
        """Test found."""
        resp = _FakeResponse(
            200,
            {
                "data": [
                    {
                        "game_name": "TF2",
                        "game_alias": "",
                        "comp_100": 180000,
                        "game_id": 12345,
                    }
                ],
            },
        )
        ctx = _make_ctx(_make_session(resp))
        result = asyncio.run(_search_one(asyncio.Semaphore(1), ctx, 440, "TF2"))
        assert result is not None
        assert result.app_id == 440

    def test_found_without_game_id(self) -> None:
        """Found result with hltb_game_id=0 does not populate ctx.hltb_game_id."""
        resp = _FakeResponse(
            200,
            {
                "data": [
                    {
                        "game_name": "TF2",
                        "game_alias": "",
                        "comp_100": 180000,
                        "game_id": 0,
                    }
                ],
            },
        )
        ctx = _make_ctx(_make_session(resp))
        result = asyncio.run(_search_one(asyncio.Semaphore(1), ctx, 440, "TF2"))
        assert result is not None
        assert 440 not in ctx.extras.hltb_game_id

    def test_not_found(self) -> None:
        """Test not found."""
        resp = _FakeResponse(200, {"data": []})
        ctx = _make_ctx(_make_session(resp))
        result = asyncio.run(_search_one(asyncio.Semaphore(1), ctx, 440, "TF2"))
        assert result is None
        assert ctx.cache[440] == -1

    def test_error(self) -> None:
        """Test error."""
        session = MagicMock()
        session.post.side_effect = aiohttp.ClientError("fail")
        ctx = _make_ctx(session)
        result = asyncio.run(_search_one(asyncio.Semaphore(1), ctx, 440, "TF2"))
        assert result is None
        assert 440 not in ctx.cache  # a failed lookup is not a miss
        assert ctx.counter["failed"] == 1

    def test_non_200(self) -> None:
        """Test non 200."""
        resp = _FakeResponse(500)
        ctx = _make_ctx(_make_session(resp))
        result = asyncio.run(_search_one(asyncio.Semaphore(1), ctx, 440, "TF2"))
        assert result is None
        assert 440 not in ctx.cache  # a failed lookup is not a miss
        assert ctx.counter["failed"] == 1

    def test_fallback_name_without_year_suffix(self) -> None:
        """Test fallback name without year suffix."""
        session = MagicMock()
        session.post.side_effect = [
            _FakeResponse(200, {"data": []}),
            _FakeResponse(
                200,
                {
                    "data": [
                        {
                            "game_name": "Final Fantasy VII",
                            "game_alias": "",
                            "game_type": "game",
                            "comp_100": 141120,
                            "game_id": 435,
                            "comp_100_count": 746,
                            "count_comp": 10450,
                        }
                    ]
                },
            ),
        ]
        ctx = _make_ctx(session)
        result = asyncio.run(
            _search_one(asyncio.Semaphore(1), ctx, 39140, "Final Fantasy VII (2013)")
        )
        assert result is not None
        assert result.app_id == 39140
        assert result.comp_100_count == 746
        assert result.count_comp == 10450
        assert session.post.call_count == 2

    def test_with_progress_cb(self) -> None:
        """Test with progress cb."""
        resp = _FakeResponse(200, {"data": []})
        cb = MagicMock()
        ctx = _make_ctx(_make_session(resp), progress_cb=cb)
        asyncio.run(_search_one(asyncio.Semaphore(1), ctx, 440, "TF2"))
        cb.assert_called_once()

    def test_low_similarity_skipped(self) -> None:
        """Test low similarity skipped."""
        resp = _FakeResponse(
            200,
            {
                "data": [
                    {
                        "game_name": "Completely Different Name",
                        "game_alias": "",
                        "comp_100": 3600,
                        "game_id": 1,
                    }
                ],
            },
        )
        ctx = _make_ctx(_make_session(resp))
        result = asyncio.run(_search_one(asyncio.Semaphore(1), ctx, 440, "TF2"))
        assert result is None