"""Story 变更触发章节物化：调用链与 Celery 派发的行为验证（无真实 DB）。"""

import asyncio
import unittest
from unittest.mock import AsyncMock, MagicMock, patch

from app.features.story.service import StoryService


class ChapterStoryComposeFlowTest(unittest.TestCase):
    def test_append_version_marks_dirty_and_delays_recompose(self):
        async def run():
            db = MagicMock()
            db.flush = AsyncMock()
            db.commit = AsyncMock()
            db.add = MagicMock()
            story = MagicMock()
            story.id = "story-1"
            story.current_version_id = None
            story.title = "T"

            version = MagicMock()
            version.id = "ver-new"

            with (
                patch(
                    "app.features.story.service.get_story_by_id",
                    new_callable=AsyncMock,
                    return_value=story,
                ),
                patch(
                    "app.features.story.service.count_story_versions",
                    new_callable=AsyncMock,
                    return_value=0,
                ),
                patch(
                    "app.features.story.service.create_story_version",
                    new_callable=AsyncMock,
                    return_value=version,
                ),
                patch(
                    "app.features.story.service._extract_and_store_image_intent",
                    new_callable=AsyncMock,
                ),
                patch(
                    "app.features.memoir.repo.mark_chapters_dirty_for_story",
                    new_callable=AsyncMock,
                ) as m_mark,
                patch(
                    "app.tasks.chapter_compose_tasks.recompose_chapters_for_story"
                ) as m_task,
            ):
                m_task.delay = MagicMock()
                svc = StoryService(db=db)
                await svc.append_version("story-1", "# 新正文")
                m_mark.assert_awaited_once_with(db, "story-1")
                m_task.delay.assert_called_once_with("story-1")

        asyncio.run(run())