"""Rebuild stored stories, import epub files and hand books to CWA, against a fake CWA. No story site access."""

import dataclasses
import json
import re
import zipfile

import pytest
from fake_cwa import FakeBook, FakeCwa
from test_build import COVER, IMG_URL, PNG, URL, chapters, metahtml

from bindery import config, fff, orchestrator
from bindery.diffing import text_hash
from bindery.epub import EpubError
from bindery.fff import SiteSnapshot, StoryError
from bindery.jobs import DownloadMode, Job, JobQueue, QueueStatus
from bindery.store import Store

STORY_URL = "https://www.royalroad.com/fiction/1234"


@pytest.fixture(scope="module")
def story_epub(tmp_path_factory):
    path = tmp_path_factory.mktemp("epub") / "story.epub"
    fff.build_epub(URL, metahtml(), chapters(), [], None, [], {"title": "Library Title"}, path)
    return path.read_bytes()


@pytest.fixture
def fake(story_epub, monkeypatch, tmp_path):
    server = FakeCwa()
    server.books = [FakeBook(1, "uuid-1", "Test Story", publisher="www.royalroad.com", epub=story_epub)]
    monkeypatch.setattr(config, "CWA_URL", server.url)
    monkeypatch.setattr(config, "CWA_USERNAME", "bindery")
    monkeypatch.setattr(config, "CWA_PASSWORD", "secret")
    monkeypatch.setattr(orchestrator, "store", Store(tmp_path / "bindery.db"))
    monkeypatch.setattr(config, "INGEST_DIR", tmp_path / "ingest")
    config.INGEST_DIR.mkdir()
    monkeypatch.setattr(orchestrator, "finder", orchestrator.BookFinder())
    yield server
    server.close()


def add_story(**changes):
    store = orchestrator.store
    story_id = store.create_story(STORY_URL, "www.royalroad.com", "Test Story", "Writer", ["title"])
    store.update_story(story_id, metahtml=metahtml(), pinned={"title": "My Title"}, **changes)
    for n, c in enumerate(chapters()):
        store.add_chapter(story_id, c["url"], c["title"], c["html"], "h", "site", n)
    return story_id


def ingest_files():
    folder = config.INGEST_DIR
    return sorted(p.name for p in folder.iterdir()) if folder.exists() else []


def opf(name):
    with zipfile.ZipFile(config.INGEST_DIR / name) as z:
        return z.read("content.opf").decode()


def rebuild(story_id):
    """A rebuild that the user asks for. It builds and sends the book also when the book did not change."""
    return orchestrator._run_rebuild(Job(mode=DownloadMode.REBUILD, story_id=story_id, options={"force": True}))


def test_first_version_goes_in_as_a_new_book(fake):
    fake.books = []
    story_id = add_story()
    assert rebuild(story_id) == "Sent to CWA"
    (name,) = ingest_files()
    assert re.search(r"<dc:title[^>]*>My Title</dc:title>", opf(name))
    assert orchestrator.store.get_story(story_id)["ingested_at"]


def test_ingested_story_is_found_and_updated_with_a_sidecar(fake):
    story_id = add_story(ingested_at="2026-01-01T00:00:00")
    assert "library book 1" in rebuild(story_id)
    story = orchestrator.store.get_story(story_id)
    assert (story["calibre_id"], story["calibre_uuid"]) == (1, "uuid-1")
    epub, manifest = ingest_files()
    assert manifest == epub + ".cwa.json"
    assert json.loads((config.INGEST_DIR / manifest).read_text()) == {
        "action": "add_format",
        "book_id": 1,
    }


def test_update_fails_while_cwa_has_no_such_book(fake):
    fake.books = []
    story_id = add_story(ingested_at="2026-01-01T00:00:00")
    with pytest.raises(orchestrator.StoryError, match="Cannot find this story in CWA"):
        rebuild(story_id)
    assert ingest_files() == []  # a second plain epub would make a duplicate book


def test_update_exports_without_a_library_connection(fake, monkeypatch):
    monkeypatch.setattr(config, "CWA_URL", "")
    story_id = add_story(ingested_at="2026-01-01T00:00:00")
    assert rebuild(story_id) == "Sent to ingest folder"
    assert orchestrator.store.get_story(story_id)["status"] == "ok"
    assert orchestrator.store.get_setting(story_id, "upload_held") is None
    assert len(ingest_files()) == 1


def test_linked_story_still_updates_when_cwa_is_down(fake):
    story_id = add_story(ingested_at="2026-01-01T00:00:00", calibre_id=1, calibre_uuid="uuid-1")
    fake.close()
    assert "library book 1" in rebuild(story_id)
    assert len(ingest_files()) == 2


def test_deleted_book_is_unlinked_and_the_update_fails(fake):
    story_id = add_story(ingested_at="2026-01-01T00:00:00", calibre_id=5, calibre_uuid="uuid-gone")
    fake.books = []
    with pytest.raises(orchestrator.StoryError, match="Cannot find this story in CWA"):
        rebuild(story_id)
    assert orchestrator.store.get_story(story_id)["calibre_id"] is None


def test_unlinked_story_can_go_to_cwa_again_as_a_new_book(fake):
    fake.books = []
    story_id = add_story(ingested_at="2026-01-01T00:00:00", calibre_id=5, calibre_uuid="uuid-gone")
    orchestrator.link_story(story_id, None)
    assert rebuild(story_id) == "Sent to CWA"
    assert len(ingest_files()) == 1


def test_import_from_the_library(fake):
    job = Job(mode=DownloadMode.IMPORT, calibre_id=1, title="Test Story", options={"uuid": "uuid-1", "check": False})
    assert orchestrator._run_import(job) == "Imported 3 chapters"
    story = orchestrator.store.get_story(job.story_id)
    assert story["url"] == STORY_URL
    assert (story["calibre_id"], story["calibre_uuid"]) == (1, "uuid-1")
    assert story["pinned"] == {"title": "Library Title"}
    assert [c["title"] for c in orchestrator.store.list_chapters(job.story_id)] == ["One", "Two", "Three"]
    assert orchestrator._run_import(job) == "Book already tracked"
    assert not list(config.TMP_DIR.glob("import-*"))


def test_library_candidates_and_search(fake):
    candidates = orchestrator.library_candidates()
    assert candidates == [
        {
            "id": 1,
            "uuid": "uuid-1",
            "title": "Test Story",
            "authors": ["Writer"],
            "publisher": "www.royalroad.com",
            "formats": ["epub"],
        }
    ]
    # A search shows only the matches from a story site.
    fake.books.append(FakeBook(2, "uuid-2", "Test Novel", publisher="A Publisher", epub=b"x"))
    fake.books.append(FakeBook(4, "uuid-4", "Other Story", publisher="www.royalroad.com", epub=b"x"))
    assert [b["id"] for b in orchestrator.search_library("test")] == [1, 2]
    assert orchestrator.library_candidates("test") == candidates
    assert [b["id"] for b in orchestrator.library_candidates("story")] == [1, 4]
    assert orchestrator.library_candidates("nothing") == []
    assert orchestrator.library_candidates(" ") == []
    story_id = add_story()
    orchestrator.link_story(story_id, "uuid-1")
    assert [b["id"] for b in orchestrator.library_candidates()] == [4]
    assert orchestrator.library_candidates("test") == []
    assert orchestrator.search_library("test")[0]["tracked_as"] == "Test Story"
    with pytest.raises(KeyError):
        orchestrator.link_story(story_id, "uuid-nope")


# Import chapters from an epub file


@pytest.fixture
def jobs(monkeypatch):
    queue = JobQueue()
    monkeypatch.setattr(orchestrator, "job_queue", queue)
    return queue


def upload(tmp_path, data):
    path = tmp_path / "upload-1.epub"
    path.write_bytes(data)
    return path


def import_file(jobs, path, story_id=None, check=True):
    queued = orchestrator.queue_epub_file(path, "story.epub", story_id, check)
    job = jobs.get_next()
    assert job.id == queued["id"]
    return orchestrator._run_import_file(job)


def titles(story_id):
    return [c["title"] for c in orchestrator.store.list_chapters(story_id)]


def test_epub_file_starts_a_new_story(fake, jobs, story_epub, tmp_path):
    path = upload(tmp_path, story_epub)
    assert import_file(jobs, path) == "Imported 3 chapters from story.epub"
    assert not path.exists()
    story = orchestrator.store.get_story_by_url(STORY_URL)
    assert story["title"] == "Library Title"
    assert story["pinned"] == {"title": "Library Title"}
    assert titles(story["id"]) == ["One", "Two", "Three"]
    check = jobs.get_next()
    assert (check.mode, check.story_id, check.options) == (DownloadMode.NEW, story["id"], {"build": True})


def test_epub_file_fills_in_a_stubbed_story(fake, jobs, story_epub, tmp_path):
    store = orchestrator.store
    story_id = store.create_story(STORY_URL, "www.royalroad.com", "Test Story", "Writer", ["title"])
    one, _, three = chapters()
    store.add_chapter(story_id, one["url"], "One", "<p>Kept</p>", "h", "site", 0)
    store.add_chapter(story_id, three["url"], "Three", "<p>Kept</p>", "h", "site", 1)
    assert import_file(jobs, upload(tmp_path, story_epub), story_id) == "Imported 1 chapter from story.epub"
    assert titles(story_id) == ["One", "Two", "Three"]
    assert store.chapters_for_build(story_id)[0]["html"] == "<p>Kept</p>"


def test_next_update_adds_newer_chapters_after_the_imported_ones(fake, jobs, story_epub, tmp_path, monkeypatch):
    # The site stubbed the first two chapters and added a fourth after the epub was made.
    fake.books = []
    import_file(jobs, upload(tmp_path, story_epub))
    four = chapters()[2]["url"].replace("15/c15", "16/c16")
    site = [{"url": chapters()[2]["url"], "title": "Three"}, {"url": four, "title": "Four"}]
    monkeypatch.setattr(
        fff,
        "fetch_story",
        lambda adapter: SiteSnapshot(STORY_URL, "www.royalroad.com", "Test Story", "Writer", metahtml(), site, {}),
    )
    monkeypatch.setattr(fff, "fetch_chapter", lambda adapter, url, index: "<div><p>Four</p></div>")
    monkeypatch.setattr(fff, "collected_images", lambda adapter: [])
    check = jobs.get_next()
    assert orchestrator._run_site_job(check).startswith("1 new chapter")
    assert titles(check.story_id) == ["One", "Two", "Three", "Four"]
    assert len(ingest_files()) == 1


def test_epub_file_without_a_check_rebuilds_a_downloaded_story(fake, jobs, story_epub, tmp_path):
    store = orchestrator.store
    story_id = store.create_story(STORY_URL, "www.royalroad.com", "Test Story", "Writer", ["title"])
    store.update_story(story_id, metahtml=metahtml(), ingested_at="2026-01-01T00:00:00")
    store.add_chapter(story_id, chapters()[0]["url"], "One", "<p>Kept</p>", "h", "site", 0)
    assert import_file(jobs, upload(tmp_path, story_epub), story_id, check=False).startswith("Imported 2")
    rebuild_job = jobs.get_next()
    assert (rebuild_job.mode, rebuild_job.story_id) == (DownloadMode.REBUILD, story_id)
    assert "library book 1" in orchestrator._run_rebuild(rebuild_job)


def test_epub_of_another_story_is_refused(fake, jobs, story_epub, tmp_path):
    other = orchestrator.store.create_story(
        "https://www.royalroad.com/fiction/99", "www.royalroad.com", "Other", "Writer", []
    )
    path = upload(tmp_path, story_epub)
    with pytest.raises(StoryError, match="story.epub is an epub of another story"):
        orchestrator.queue_epub_file(path, "story.epub", other)
    assert not path.exists()
    assert jobs.get_next() is None


def test_file_that_is_not_an_epub_is_refused(fake, jobs, tmp_path):
    path = upload(tmp_path, b"not a zip file")
    with pytest.raises(EpubError, match="story.epub is not a readable epub"):
        orchestrator.queue_epub_file(path, "story.epub")
    assert not path.exists()


# Updates from the site

CHAPTER = "https://www.royalroad.com/fiction/1234/test-story/chapter/{0}/c{0}"


def linked_story(chapter_list):
    """A story in CWA with the chapters (number, title, text)."""
    store = orchestrator.store
    story_id = store.create_story(STORY_URL, "www.royalroad.com", "Test Story", "Writer", ["title"], 1, "uuid-1")
    store.update_story(story_id, metahtml=metahtml(), ingested_at="2026-01-01T00:00:00")
    for n, (number, title, text, *source) in enumerate(chapter_list):
        html = f"<div><p>{text}</p></div>"
        store.add_chapter(
            story_id, CHAPTER.format(number), title, html, text_hash(html), source[0] if source else "new", n
        )
    return story_id


def site(monkeypatch, chapter_list, broken=()):
    """The site lists these chapters (number, title, text). Chapters in `broken` fail to download."""
    texts = {CHAPTER.format(n): text for n, _, text in chapter_list}
    listed = [{"url": CHAPTER.format(n), "title": title} for n, title, _ in chapter_list]
    monkeypatch.setattr(
        fff,
        "fetch_story",
        lambda adapter: SiteSnapshot(STORY_URL, "www.royalroad.com", "Test Story", "Writer", metahtml(), listed, {}),
    )
    monkeypatch.setattr(fff, "collected_images", lambda adapter: [])

    def fetch(adapter, url, index):
        if url in {CHAPTER.format(n) for n in broken}:
            raise OSError("timeout")
        return f"<div><p>{texts[url]}</p></div>"

    monkeypatch.setattr(fff, "fetch_chapter", fetch)


def update(story_id, mode=DownloadMode.NEW, **fields):
    return orchestrator._run_site_job(Job(mode=mode, story_id=story_id, **fields))


def book(story_id):
    """The title and text of each chapter in the book."""
    return [(c["title"], re.sub(r"<[^>]+>", "", c["html"])) for c in orchestrator.store.chapters_for_build(story_id)]


def test_the_site_cover_goes_in_the_book(fake, jobs, monkeypatch, tmp_path):
    # A personal.ini without include_images, as the calibre plugin often has.
    empty = tmp_path / "personal.ini"
    empty.write_text("")
    monkeypatch.setattr(config, "PERSONAL_INI", empty)
    story_id = linked_story([(1, "One", "a")])
    site(monkeypatch, [(1, "One", "a"), (2, "Two", "b")])
    snapshot = fff.fetch_story
    monkeypatch.setattr(fff, "fetch_story", lambda adapter: dataclasses.replace(snapshot(adapter), cover=COVER))
    assert update(story_id).startswith("1 new chapter")
    assert orchestrator.store.cover(story_id)["data"] == PNG
    (epub,) = [n for n in ingest_files() if n.endswith(".epub")]
    with zipfile.ZipFile(config.INGEST_DIR / epub) as z:
        assert "OEBPS/cover.xhtml" in z.namelist()


def test_new_chapter_after_stubbed_chapters_goes_last(fake, jobs, monkeypatch):
    story_id = linked_story([(1, "One", "a"), (2, "Two", "b"), (3, "Three", "c")])
    site(monkeypatch, [(1, "One", "a"), (4, "Four", "d")])
    assert update(story_id).startswith("1 new chapter")
    assert book(story_id) == [("One", "a"), ("Two", "b"), ("Three", "c"), ("Four", "d")]


def test_renamed_chapter_is_rechecked_and_rebuilt(fake, jobs, monkeypatch):
    story_id = linked_story([(1, "One", "a"), (2, "Two", "b")])
    site(monkeypatch, [(1, "One", "a"), (2, "Two (rewritten)", "b2")])
    message = update(story_id)
    assert "1 renamed, 1 of 1 rechecked chapters changed" in message and "library book 1" in message
    assert book(story_id) == [("One", "a"), ("Two (rewritten)", "b2")]


def test_renamed_chapter_with_the_same_text_is_rebuilt(fake, jobs, monkeypatch):
    story_id = linked_story([(1, "One", "a")])
    site(monkeypatch, [(1, "Chapter One", "a")])
    message = update(story_id)
    assert "1 renamed, 0 of 1 rechecked chapters changed" in message and "library book 1" in message
    assert len(orchestrator.store.list_revisions(orchestrator.store.list_chapters(story_id)[0]["id"])) == 1


def test_job_results_show_chapter_titles_as_text(fake, jobs, monkeypatch):
    story_id = linked_story([(1, "One", "a")])
    site(monkeypatch, [(1, "One", "a"), (2, "Folly &amp; Magic", "b")], broken=[2])
    job = Job(mode=DownloadMode.NEW, story_id=story_id)
    orchestrator._run_site_job(job)
    assert job.result["failed"] == ["Folly & Magic: timeout"]
    site(monkeypatch, [(1, "One", "a"), (2, "Folly &amp; Magic", "b")])
    orchestrator._run_site_job(Job(mode=DownloadMode.NEW, story_id=story_id))
    # The store keeps FanFicFare's form, for the epub writer.
    assert [c["title"] for c in orchestrator.store.list_chapters(story_id)] == ["One", "Folly &amp; Magic"]


def test_renamed_chapter_keeps_its_title_until_its_recheck_works(fake, jobs, monkeypatch):
    story_id = linked_story([(1, "One", "a")])
    site(monkeypatch, [(1, "Chapter One", "a2")], broken=[1])
    update(story_id)
    assert book(story_id) == [("One", "a")]
    site(monkeypatch, [(1, "Chapter One", "a2")])
    update(story_id)
    assert book(story_id) == [("Chapter One", "a2")]


def test_insert_on_a_site_that_numbers_its_chapter_urls(fake, jobs, monkeypatch):
    # FanFiction.net and similar sites. A chapter inserted at 2 moves B and C up one URL.
    story_id = linked_story([(1, "1. A", "a"), (2, "2. B", "b"), (3, "3. C", "c")])
    site(monkeypatch, [(1, "1. A", "a"), (2, "2. New", "new"), (3, "3. B", "b"), (4, "4. C", "c")])
    update(story_id)
    assert book(story_id) == [("1. A", "a"), ("2. New", "new"), ("3. B", "b"), ("4. C", "c")]


def test_imported_chapter_that_differs_only_by_the_rules_is_unchanged(fake, jobs, monkeypatch):
    orchestrator.save_rules(None, [{"pattern": "Zorian", "replacement": "Z"}])
    story_id = linked_story([(1, "One", "Z wakes.", "import")])
    site(monkeypatch, [(1, "One", "Zorian wakes.")])
    assert "0 of 1 rechecked chapters changed" in update(story_id, DownloadMode.RECHECK_ALL)
    # The stored text is now the site text, so the rules run on it once.
    (chapter,) = orchestrator.store.list_chapters(story_id)
    assert orchestrator.store.revision_html(chapter["id"], 1) == "<div><p>Zorian wakes.</p></div>"
    # A real change is still a change.
    site(monkeypatch, [(1, "One", "Zorian sleeps.")])
    assert "1 of 1 rechecked chapters changed" in update(story_id, DownloadMode.RECHECK_ALL)


def test_a_chosen_revision_stays_until_the_site_changes_again(fake, jobs, monkeypatch):
    story_id = linked_story([(1, "One", "a")])
    (chapter,) = orchestrator.store.list_chapters(story_id)
    site(monkeypatch, [(1, "One", "b")])
    assert "1 of 1 rechecked chapters changed" in update(story_id, DownloadMode.RECHECK_ALL)
    orchestrator.store.update_chapter(chapter["id"], current_rev=1)
    assert "0 of 1 rechecked chapters changed" in update(story_id, DownloadMode.RECHECK_ALL)
    assert book(story_id) == [("One", "a")]
    assert len(orchestrator.store.list_revisions(chapter["id"])) == 2
    site(monkeypatch, [(1, "One", "c")])
    assert "1 of 1 rechecked chapters changed" in update(story_id, DownloadMode.RECHECK_ALL)
    assert book(story_id) == [("One", "c")]


def test_a_site_that_goes_back_to_an_older_text_changes_the_book(fake, jobs, monkeypatch):
    story_id = linked_story([(1, "One", "a")])
    site(monkeypatch, [(1, "One", "b")])
    update(story_id, DownloadMode.RECHECK_ALL)
    site(monkeypatch, [(1, "One", "a")])
    assert "1 of 1 rechecked chapters changed" in update(story_id, DownloadMode.RECHECK_ALL)
    assert book(story_id) == [("One", "a")]


def test_new_chapter_download_rechecks_the_latest_chapters(fake, jobs, monkeypatch):
    orchestrator.store.set_setting(None, "recent_chapters", 2)
    story_id = linked_story([(1, "One", "a"), (2, "Two", "b"), (3, "Three", "c")])
    site(monkeypatch, [(1, "One", "a (edited)"), (2, "Two", "b"), (3, "Three", "c (edited)")])
    assert "1 of 2 rechecked chapters changed" in update(story_id)
    assert book(story_id) == [("One", "a"), ("Two", "b"), ("Three", "c (edited)")]
    # A story with its own full recheck interval does not check its latest chapters.
    orchestrator.update_story_settings(story_id, recheck_days=7)
    site(monkeypatch, [(1, "One", "a"), (2, "Two", "b"), (3, "Three", "c (again)")])
    assert update(story_id).startswith("No changes")


def test_scheduler_runs_a_full_recheck_when_one_is_due(fake, jobs, monkeypatch):
    monkeypatch.setattr(config, "UPDATE_INTERVAL_HOURS", 12)
    story_id = linked_story([(1, "One", "a")])
    orchestrator.update_story_settings(story_id, recheck_days=7)
    orchestrator._queue_due_updates()
    job = jobs.get_next()
    assert job.mode == DownloadMode.RECHECK_ALL
    site(monkeypatch, [(1, "One", "a")])
    orchestrator._run_site_job(job)
    jobs.update(job, status=QueueStatus.DONE)
    assert orchestrator.story_details(story_id)["story"]["last_full_recheck"]
    orchestrator.store.update_story(story_id, last_checked="2020-01-01T00:00:00")
    orchestrator._queue_due_updates()
    assert jobs.get_next().mode == DownloadMode.NEW
    with pytest.raises(ValueError):
        orchestrator.update_story_settings(story_id, recheck_days=-1)
    orchestrator.update_story_settings(story_id, recheck_days=0)
    assert orchestrator.story_details(story_id)["story"]["recheck_days"] is None


# Metadata edits


def test_metadata_edit_rebuilds_the_book(fake, jobs):
    story_id = add_story(calibre_id=1, calibre_uuid="uuid-1", ingested_at="2026-01-01T00:00:00")
    result = orchestrator.edit_metadata(story_id, {"title": "Edited", "tags": "Mine, Yours"})
    assert result["story"]["title"] == "Edited"
    assert result["story"]["pinned"] == {"title": "Edited", "tags": ["Mine", "Yours"]}
    job = jobs.get_next()
    assert result["job"]["id"] == job.id and job.mode == DownloadMode.REBUILD
    orchestrator._run_rebuild(job)
    epub, _ = ingest_files()
    assert re.search(r"<dc:title[^>]*>Edited</dc:title>", opf(epub))
    assert re.findall(r"<dc:subject>([^<]*)</dc:subject>", opf(epub)) == ["Mine", "Yours"]
    # Without the edit, the unlocked tags come from the site again.
    orchestrator.edit_metadata(story_id, {"tags": None})
    assert orchestrator.store.get_story(story_id)["pinned"] == {"title": "Edited"}


def test_unlocking_a_field_drops_its_kept_value(fake, jobs):
    story_id = add_story()
    orchestrator.update_story_settings(story_id, locked_fields=[])
    assert orchestrator.store.get_story(story_id)["pinned"] == {}


def test_metadata_edit_of_a_story_that_cwa_does_not_have_waits_for_the_next_build(fake, jobs):
    story_id = add_story()
    assert orchestrator.edit_metadata(story_id, {"series": "Saga [2]"})["job"] is None
    assert jobs.get_next() is None
    with pytest.raises(ValueError, match="Unknown metadata fields"):
        orchestrator.edit_metadata(story_id, {"publisher": "x"})


# Restarts


class Crash(BaseException):
    """Bindery stops in the middle of a job."""


def test_a_download_that_stops_keeps_its_chapters_and_resumes(fake, story_epub, tmp_path, monkeypatch):
    store = orchestrator.store
    story_id = store.create_story(STORY_URL, "www.royalroad.com", "Test Story", "Writer", ["title"])
    store.update_story(story_id, metahtml=metahtml(), ingested_at="2026-01-01T00:00:00")
    one, two, three = chapters()
    store.add_chapter(story_id, one["url"], "One", "<p>1</p>", "h", "site", 0)
    four = three["url"].replace("15/c15", "16/c16")
    site = [one, two, three, {"url": four, "title": "Four"}]
    image = {"url": IMG_URL, "ext": "png", "mime": "image/png", "data": PNG}
    monkeypatch.setattr(
        fff,
        "fetch_story",
        lambda adapter: SiteSnapshot(STORY_URL, "www.royalroad.com", "Test Story", "Writer", metahtml(), site, {}),
    )
    monkeypatch.setattr(fff, "collected_images", lambda adapter: [image])
    crash_at = [three["url"]]

    def fetch(adapter, url, index):
        if url in crash_at:
            raise Crash
        return f"<div><p>{url}</p></div>"

    monkeypatch.setattr(fff, "fetch_chapter", fetch)

    queue = JobQueue(tmp_path / "jobs.db")
    monkeypatch.setattr(orchestrator, "job_queue", queue)
    job = queue.add(Job(mode=DownloadMode.NEW, story_id=story_id))
    queue.update(queue.get_next(), status=QueueStatus.RUNNING)
    with pytest.raises(Crash):
        orchestrator._run_site_job(job)
    # Chapter Two and its image are stored, in their place.
    assert titles(story_id) == ["One", "Two"]
    assert store.image_urls(story_id) == {IMG_URL}

    queue = JobQueue(tmp_path / "jobs.db")
    monkeypatch.setattr(orchestrator, "job_queue", queue)
    crash_at.clear()
    resumed = queue.get_next()
    assert (resumed.id, resumed.restarts, resumed.result["new"]) == (job.id, 1, 1)
    message = orchestrator._run_site_job(resumed)
    assert message.startswith("3 new chapters") and "library book 1" in message
    assert titles(story_id) == ["One", "Two", "Three", "Four"]


def test_an_upload_that_is_gone_fails_clearly(fake, jobs, story_epub, tmp_path):
    path = upload(tmp_path, story_epub)
    orchestrator.queue_epub_file(path, "story.epub")
    path.unlink()
    with pytest.raises(StoryError, match="Uploaded file story.epub is gone. Upload it again."):
        orchestrator._run_import_file(jobs.get_next())


# Upload holds


def test_a_new_story_waits_for_approval_of_its_first_upload(fake, jobs, monkeypatch):
    orchestrator.save_settings(hold_new_links=True)
    fake.books = []
    site(monkeypatch, [(1, "One", "a")])
    job = Job(mode=DownloadMode.NEW, url=STORY_URL)
    assert "Approve as new book" in orchestrator._run_site_job(job)
    assert ingest_files() == []
    story = orchestrator.story_details(job.story_id)["story"]
    assert (story["upload_held"], story["needs_approval"], story["ingested_at"]) == (True, True, None)
    assert orchestrator.list_stories()[0]["upload_held"]
    queued = orchestrator.approve_upload(job.story_id, None)
    assert jobs.get_next().id == queued["id"]
    assert rebuild(job.story_id) == "Sent to CWA"
    story = orchestrator.story_details(job.story_id)["story"]
    assert (story["upload_held"], story["needs_approval"]) == (False, False)


def test_a_new_story_linked_to_a_library_book_waits_for_approval(fake, jobs, monkeypatch):
    orchestrator.save_settings(hold_new_links=True)
    site(monkeypatch, [(1, "One", "a")])
    job = Job(mode=DownloadMode.NEW, url=STORY_URL)
    assert "Approve link to library book 1" in orchestrator._run_site_job(job)
    assert ingest_files() == []
    with pytest.raises(ValueError, match="link of this story changed"):
        orchestrator.approve_upload(job.story_id, None)
    orchestrator.approve_upload(job.story_id, "uuid-1")
    assert "library book 1" in rebuild(job.story_id)
    assert len(ingest_files()) == 2


def test_a_changed_link_waits_for_approval(fake, jobs):
    orchestrator.save_settings(hold_new_links=True)
    fake.books.append(FakeBook(2, "uuid-2", "Other Story", epub=b"x"))
    story_id = add_story(ingested_at="2026-01-01T00:00:00", calibre_id=1, calibre_uuid="uuid-1")
    assert "library book 1" in rebuild(story_id)
    orchestrator.link_story(story_id, "uuid-2")
    assert "Approve link to library book 2" in rebuild(story_id)
    assert len(ingest_files()) == 2
    orchestrator.approve_upload(story_id, "uuid-2")
    assert "library book 2" in rebuild(story_id)


def test_a_book_found_after_the_linked_book_is_gone_waits_for_approval(fake, jobs):
    orchestrator.save_settings(hold_new_links=True)
    story_id = add_story(ingested_at="2026-01-01T00:00:00", calibre_id=5, calibre_uuid="uuid-gone")
    assert "Approve link to library book 1" in rebuild(story_id)
    assert ingest_files() == []


def test_the_book_that_cwa_imports_from_the_first_upload_needs_no_approval(fake, jobs):
    orchestrator.save_settings(hold_new_links=True)
    books, fake.books = fake.books, []
    story_id = add_story()
    assert rebuild(story_id) == "Sent to CWA"
    fake.books = books
    assert "library book 1" in rebuild(story_id)


def test_a_link_that_went_to_cwa_before_the_setting_needs_no_approval(fake, jobs):
    story_id = add_story(ingested_at="2026-01-01T00:00:00", calibre_id=1, calibre_uuid="uuid-1")
    orchestrator.link_story(story_id, None)
    orchestrator.link_story(story_id, "uuid-1")
    assert "library book 1" in rebuild(story_id)
    orchestrator.save_settings(hold_new_links=True)
    assert "library book 1" in rebuild(story_id)


def test_paused_uploads_go_to_cwa_when_the_pause_ends(fake, jobs):
    story_id = add_story(ingested_at="2026-01-01T00:00:00", calibre_id=1, calibre_uuid="uuid-1")
    orchestrator.save_settings(pause_uploads=True)
    assert "pause" in rebuild(story_id)
    assert ingest_files() == []
    assert orchestrator.approve_upload(story_id, "uuid-1") is None
    assert jobs.get_next() is None
    orchestrator.save_settings(pause_uploads=True)
    assert jobs.get_next() is None
    orchestrator.save_settings(pause_uploads=False)
    assert "library book 1" in orchestrator._run_rebuild(jobs.get_next())
    assert len(ingest_files()) == 2
    assert not orchestrator.story_details(story_id)["story"]["upload_held"]
    orchestrator.save_settings(pause_uploads=False)
    assert jobs.get_next() is None