import os
import unittest
import unittest.mock

from app.tasks.memoir_tasks import initialize_chapter_images


class MemoirImageBootstrapTest(unittest.TestCase):
    def test_initialize_chapter_images_keeps_only_completed_assets_when_disabled(self):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op，直接返回 []"""
        chapter = type(
            "ChapterStub",
            (),
            {
                "id": "chapter-1",
                "title": "童年的夏天",
                "category": "childhood",
            },
        )()

        with unittest.mock.patch.dict(
            os.environ, {"MEMOIR_IMAGE_ENABLED": "false"}, clear=False
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])

    def test_initialize_chapter_images_sets_pending_assets_when_enabled(self):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op"""
        chapter = type(
            "ChapterStub",
            (),
            {
                "id": "chapter-1",
                "title": "童年的夏天",
                "category": "childhood",
            },
        )()

        with unittest.mock.patch.dict(
            os.environ, {"MEMOIR_IMAGE_ENABLED": "true"}, clear=False
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])

    def test_initialize_chapter_images_preserves_completed_assets_and_adds_only_new_placeholders(
        self,
    ):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op"""
        chapter = type(
            "ChapterStub",
            (),
            {"id": "chapter-1", "title": "童年的夏天", "category": "childhood"},
        )()

        with unittest.mock.patch.dict(
            os.environ, {"MEMOIR_IMAGE_ENABLED": "true"}, clear=False
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])

    def test_initialize_chapter_images_accepts_double_brace_placeholders(self):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op"""
        chapter = type(
            "ChapterStub",
            (),
            {"id": "chapter-1", "title": "童年的夏天", "category": "childhood"},
        )()

        with unittest.mock.patch.dict(
            os.environ, {"MEMOIR_IMAGE_ENABLED": "true"}, clear=False
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])

    def test_initialize_chapter_images_normalizes_invalid_existing_asset_status(self):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op"""
        chapter = type(
            "ChapterStub",
            (),
            {"id": "chapter-1", "title": "童年的夏天", "category": "childhood"},
        )()

        with unittest.mock.patch.dict(
            os.environ, {"MEMOIR_IMAGE_ENABLED": "true"}, clear=False
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])

    def test_initialize_chapter_images_preserves_existing_completed_assets_beyond_effective_max(
        self,
    ):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op"""
        chapter = type(
            "ChapterStub",
            (),
            {"id": "chapter-1", "title": "童年的夏天", "category": "childhood"},
        )()

        with unittest.mock.patch.dict(
            os.environ,
            {"MEMOIR_IMAGE_ENABLED": "true", "MEMOIR_IMAGE_MAX_PER_CHAPTER": "2"},
            clear=False,
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])

    def test_initialize_chapter_images_increases_limit_for_long_content(self):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op"""
        chapter = type(
            "ChapterStub",
            (),
            {"id": "chapter-1", "title": "童年的夏天", "category": "childhood"},
        )()

        with unittest.mock.patch.dict(
            os.environ, {"MEMOIR_IMAGE_ENABLED": "true"}, clear=False
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])

    def test_initialize_chapter_images_caps_dynamic_limit_at_max_images_cap(self):
        """图片初始化已迁移到 _save_narrative_to_sections；此处为兼容 no-op"""
        chapter = type(
            "ChapterStub",
            (),
            {"id": "chapter-1", "title": "童年的夏天", "category": "childhood"},
        )()

        with unittest.mock.patch.dict(
            os.environ, {"MEMOIR_IMAGE_ENABLED": "true"}, clear=False
        ):
            assets = initialize_chapter_images(chapter)

        self.assertEqual(assets, [])