"""视频预览生成 积分扣点单元测试 (#1895 P2 step 2.5)"""

from __future__ import annotations

from unittest.mock import MagicMock, patch

import pytest

import packages.middleware.points_gate as _pg_module


@pytest.fixture(autouse=True)
def _enable(monkeypatch):
    monkeypatch.setattr(_pg_module, "_points_gate_enabled", lambda: True)
    yield


class TestGenerationPreviewPoints:
    def test_ai_video_cost(self):
        from packages.domain.points_rules import calculate_points_cost

        assert calculate_points_cost("ai_video", is_member=False) == 4
        assert calculate_points_cost("ai_video", is_member=True, member_type="monthly") == 2

    def test_insufficient_raises_402(self):
        from app.api.routes.generation_preview import create_preview_generation_task
        from app.schemas.generation_task import CreatePreviewGenerationTaskRequest
        from fastapi import HTTPException

        db = MagicMock()
        cu = MagicMock()
        cu.user.id = "u1"
        cu.user.is_member = False
        cu.user.member_type = None
        req = CreatePreviewGenerationTaskRequest(template_id="t1", asset_ids=["a1"], preview_count=1)
        with patch("packages.domain.points_service.PointsService") as MS:
            svc = MagicMock()
            svc.check_daily_free_clip.return_value = False
            svc.deduct_points.return_value = {"success": False, "balance": 0}
            MS.return_value = svc
            with pytest.raises(HTTPException) as ei:
                create_preview_generation_task(
                    request=req,
                    authenticated_user=cu,
                    db=db,
                    generation_task_repository=MagicMock(),
                    asset_repo=MagicMock(),
                )
            assert ei.value.status_code == 402

    def test_decorator_attached(self):
        from app.api.routes.generation_preview import create_preview_generation_task

        assert hasattr(create_preview_generation_task, "__wrapped__"), "missing @points_gate"