"""scripts_ai 积分扣点单元测试 (#1895 P2 step 2.3)"""

from __future__ import annotations

from unittest.mock import MagicMock, patch

import pytest
from fastapi import HTTPException

import packages.middleware.points_gate as _pg_module


def _make_cu(user_id="u1", is_member=False, member_type=None):
    cu = MagicMock()
    cu.user.id = user_id
    cu.user.is_member = is_member
    cu.user.member_type = member_type
    return cu


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


class TestScriptsAiPointsGate:
    """测试 scripts_ai 三个端点都挂了 @points_gate 并正确扣费。"""

    @pytest.mark.parametrize(
        "scene,endpoint_fn_name",
        [
            ("douyin_extract", "extract_from_douyin"),
            ("ai_rewrite", "ai_rewrite"),
            ("ai_title", "ai_generate_titles"),
        ],
    )
    def test_insufficient_points_raises_402(self, scene, endpoint_fn_name):
        """积分不足时抛 402。"""
        from app.api.routes import scripts_ai
        from app.schemas.scripts_ai import (
            AiGenerateTitlesRequest,
            AiRewriteRequest,
            ExtractFromDouyinRequest,
        )

        fn = getattr(scripts_ai, endpoint_fn_name)
        db = MagicMock()
        cu = _make_cu()
        if scene == "douyin_extract":
            req = ExtractFromDouyinRequest(url="https://v.douyin.com/abc/")
        elif scene == "ai_rewrite":
            req = AiRewriteRequest(content="测试文案")
        else:
            req = AiGenerateTitlesRequest(content="测试文案", count=3)

        with patch("packages.domain.points_service.PointsService") as MockSvc:
            svc = MagicMock()
            svc.deduct_points.return_value = {"success": False, "balance": 0}
            MockSvc.return_value = svc
            with pytest.raises(HTTPException) as ei:
                fn(request=req, current_user=cu, db=db)
            assert ei.value.status_code == 402

    def test_disabled_passthrough_no_user_error(self, monkeypatch):
        """关闭时不需要 user/db 也能被装饰器透传（验证 gate 关闭零副作用）。"""
        from app.api.routes import scripts_ai
        from app.schemas.scripts_ai import AiRewriteRequest

        monkeypatch.setattr(_pg_module, "_points_gate_enabled", lambda: False)
        fn = scripts_ai.ai_rewrite
        # 不带 db/current_user 也应透传（后续业务逻辑可能报错但不是 401/500 gate 错误）
        with pytest.raises(Exception) as ei:
            fn(request=AiRewriteRequest(content="x"), current_user=None, db=None)
        # 不应是 gate 抛的 401/500
        assert isinstance(ei.value, AttributeError) or ei.value.status_code not in (401, 500)