steam-backlog-enforcer/steam_backlog_enforcer/tests/test_config.py

"""Tests for config module."""

from __future__ import annotations

import json
from typing import TYPE_CHECKING, Any
from unittest.mock import patch

from steam_backlog_enforcer.config import (
    Config,
    State,
    load_snapshot,
    save_snapshot,
)

if TYPE_CHECKING:
    from pathlib import Path


class TestConfig:
    """Tests for Config dataclass."""

    def test_defaults(self) -> None:
        """Test defaults."""
        cfg = Config()
        assert cfg.steam_api_key == ""
        assert cfg.steam_id == ""
        assert cfg.block_store is True
        assert cfg.kill_unauthorized_games is True
        assert cfg.uninstall_other_games is True
        assert cfg.desktop_notifications is True

    def test_save(self, tmp_path: Path) -> None:
        """Test save."""
        cfg = Config(steam_api_key="abc", steam_id="123")
        config_dir = tmp_path / "cfg"
        config_file = config_dir / "config.json"
        with (
            patch("steam_backlog_enforcer.config.CONFIG_DIR", config_dir),
            patch("steam_backlog_enforcer.config.CONFIG_FILE", config_file),
        ):
            cfg.save()
            data = json.loads(config_file.read_text(encoding="utf-8"))
            assert data["steam_api_key"] == "abc"
            assert data["steam_id"] == "123"

    def test_load_existing(self, tmp_path: Path) -> None:
        """Test load existing."""
        config_file = tmp_path / "config.json"
        config_file.write_text(
            json.dumps({"steam_api_key": "key1", "steam_id": "id1"}) + "\n",
            encoding="utf-8",
        )
        with patch("steam_backlog_enforcer.config.CONFIG_FILE", config_file):
            cfg = Config.load()
            assert cfg.steam_api_key == "key1"
            assert cfg.steam_id == "id1"

    def test_load_missing(self, tmp_path: Path) -> None:
        """Test load missing."""
        config_file = tmp_path / "nonexistent.json"
        with patch("steam_backlog_enforcer.config.CONFIG_FILE", config_file):
            cfg = Config.load()
            assert cfg.steam_api_key == ""

    def test_load_extra_fields_ignored(self, tmp_path: Path) -> None:
        """Test load extra fields ignored."""
        config_file = tmp_path / "config.json"
        config_file.write_text(
            json.dumps({"steam_api_key": "k", "unknown_field": 42}) + "\n",
            encoding="utf-8",
        )
        with patch("steam_backlog_enforcer.config.CONFIG_FILE", config_file):
            cfg = Config.load()
            assert cfg.steam_api_key == "k"


class TestState:
    """Tests for State dataclass."""

    def test_defaults(self) -> None:
        """Test defaults."""
        state = State()
        assert state.current_app_id is None
        assert state.current_game_name == ""
        assert state.finished_app_ids == []

    def test_save(self, tmp_path: Path) -> None:
        """Test save."""
        state = State(current_app_id=100, current_game_name="TestGame")
        config_dir = tmp_path / "cfg"
        state_file = config_dir / "state.json"
        with (
            patch("steam_backlog_enforcer.config.CONFIG_DIR", config_dir),
            patch("steam_backlog_enforcer.config.STATE_FILE", state_file),
        ):
            state.save()
            data = json.loads(state_file.read_text(encoding="utf-8"))
            assert data["current_app_id"] == 100
            assert data["current_game_name"] == "TestGame"

    def test_load_existing(self, tmp_path: Path) -> None:
        """Test load existing."""
        state_file = tmp_path / "state.json"
        state_file.write_text(
            json.dumps(
                {
                    "current_app_id": 50,
                    "current_game_name": "G",
                    "finished_app_ids": [1, 2],
                }
            )
            + "\n",
            encoding="utf-8",
        )
        with patch("steam_backlog_enforcer.config.STATE_FILE", state_file):
            st = State.load()
            assert st.current_app_id == 50
            assert st.finished_app_ids == [1, 2]

    def test_load_missing(self, tmp_path: Path) -> None:
        """Test load missing."""
        state_file = tmp_path / "nonexistent.json"
        with patch("steam_backlog_enforcer.config.STATE_FILE", state_file):
            st = State.load()
            assert st.current_app_id is None

    def test_load_corrupt(self, tmp_path: Path) -> None:
        """Test load corrupt."""
        state_file = tmp_path / "state.json"
        state_file.write_text("not valid json{{", encoding="utf-8")
        with patch("steam_backlog_enforcer.config.STATE_FILE", state_file):
            st = State.load()
            assert st.current_app_id is None
            assert st.current_game_name == ""

    def test_skip_for_days_records_iso_timestamp(self) -> None:
        """Test skip for days records iso timestamp."""
        state = State()
        state.skip_for_days(42, 7)
        assert "42" in state.skipped_until
        # Round-trip parse and check ~7 days in the future.
        from datetime import datetime, timezone

        expiry = datetime.fromisoformat(state.skipped_until["42"])
        delta = (expiry - datetime.now(timezone.utc)).total_seconds()
        assert 6 * 86400 < delta <= 7 * 86400 + 1

    def test_active_skipped_ids_returns_active(self) -> None:
        """Test active skipped ids returns active."""
        from datetime import datetime, timedelta, timezone

        state = State()
        future = datetime.now(timezone.utc) + timedelta(days=3)
        state.skipped_until["100"] = future.isoformat()
        assert state.active_skipped_ids() == {100}
        # Active entry retained.
        assert "100" in state.skipped_until

    def test_active_skipped_ids_prunes_expired(self) -> None:
        """Test active skipped ids prunes expired."""
        from datetime import datetime, timedelta, timezone

        state = State()
        past = datetime.now(timezone.utc) - timedelta(days=1)
        state.skipped_until["50"] = past.isoformat()
        assert state.active_skipped_ids() == set()
        assert "50" not in state.skipped_until

    def test_active_skipped_ids_prunes_malformed(self) -> None:
        """Test active skipped ids prunes malformed."""
        state = State()
        state.skipped_until["77"] = "not-a-date"
        assert state.active_skipped_ids() == set()
        assert "77" not in state.skipped_until


class TestSnapshot:
    """Tests for snapshot save/load."""

    def test_save_and_load(self, tmp_path: Path) -> None:
        """Test save and load."""
        config_dir = tmp_path / "cfg"
        snap_file = config_dir / "snapshot.json"
        with (
            patch("steam_backlog_enforcer.config.CONFIG_DIR", config_dir),
            patch("steam_backlog_enforcer.config.SNAPSHOT_FILE", snap_file),
        ):
            data: list[dict[str, Any]] = [{"app_id": 1, "name": "G1"}]
            save_snapshot(data)
            loaded = load_snapshot()
            assert loaded == data

    def test_load_none(self, tmp_path: Path) -> None:
        """Test load none."""
        snap_file = tmp_path / "nonexistent.json"
        with patch("steam_backlog_enforcer.config.SNAPSHOT_FILE", snap_file):
            assert load_snapshot() is None