"""The library screen: chips, search, sort, folders, section, the Weiterlesen card."""
import asyncio

import pytest
from textual.widgets import Input, ListView

from diora_tui import library_meta, progress
from diora_tui.app import DioraTuiApp
from diora_tui.library_screen import ChoiceScreen, LibraryScreen
from diora_tui.reader_screen import ReaderScreen

T = 1_760_000_000_000


def entry(i, title, **kw):
    return {"server_id": i, "title": title, "author": kw.pop("author", ""), "is_read": kw.pop("is_read", False),
            "uploaded_at": f"2026-0{i}-01", "folders": kw.pop("folders", []), "pages": kw.pop("pages", 0), **kw}


@pytest.fixture
def world(tmp_path, monkeypatch):
    store = progress.ProgressStore(tmp_path / "p.json")
    monkeypatch.setattr(progress, "_default", store)
    now = progress.now_ms()
    library_meta.set_remote({
        "s1": entry(1, "Das Kapital", author="Marx", folders=["Politik"], pages=900),
        "s2": entry(2, "Zauberberg", author="Mann", folders=["Roman"], pages=700),
        "s3": entry(3, "Ödipus", is_read=True, pages=90),
        "s4": entry(4, "Jacobin 24", folders=["Zeitschriften"], pages=80),
    })
    library_meta.set_extra("folder_order", ["Roman", "Politik"])
    library_meta.set_extra("sort", "recent")
    store.apply_server("s2", {"position_anchor": "5:0.5", "scroll_fraction": 0.5, "read_at": now - 120_000, "device": "Handy"})
    store.apply_server("s1", {"position_anchor": "5:0.5", "scroll_fraction": 0.2, "read_at": now - 3_600_000 * 30})
    lib = tmp_path / "lib"
    lib.mkdir()
    yield lib
    library_meta.set_remote({})
    library_meta.set_extra("folder_order", [])
    library_meta.set_extra("sort", "recent")


def run(lib, scenario):
    async def go():
        app = DioraTuiApp(lib)
        async with app.run_test(size=(120, 40)) as pilot:
            await pilot.pause(0.3)
            await scenario(app, app.screen, pilot)

    asyncio.run(go())


def titles(screen):
    return [r.title for r in screen.shown]


def text_of(screen, selector):
    return str(screen.query_one(selector).render())


def test_card_chips_and_list(world):
    async def scenario(app, screen, pilot):
        assert screen.going.title == "Zauberberg"
        assert "Zauberberg" not in titles(screen)  # once, on top
        assert titles(screen) == ["Das Kapital", "Ödipus"]  # read last first, the rest by upload (never opened last)
        card = text_of(screen, "#lib-card")
        assert "Zauberberg" in card and "50 %" in card and "Seite 350 von 700" in card and "vor 2 Minuten" in card and "Handy" in card
        chips = text_of(screen, "#lib-chips")
        assert "Angefangen 2" in chips and "Ungelesen 0" in chips and "Gelesen 1" in chips
        assert "Roman 1" in chips and "Politik 1" in chips and chips.index("Roman") < chips.index("Politik")  # the user's order
        assert "Jacobin" not in " ".join(titles(screen))  # a magazine: the other section

    run(world, scenario)


def test_status_search_and_reset(world):
    async def scenario(app, screen, pilot):
        await pilot.press("2")
        assert titles(screen) == ["Zauberberg", "Das Kapital"] and screen.going is None  # no card while filtered
        await pilot.press("2")  # the same chip again: off
        assert screen.status == "all"
        await pilot.press("4")
        assert titles(screen) == ["Ödipus"]
        await pilot.press("escape")
        assert screen.status == "all"

        await pilot.press("/")
        assert screen.query_one(Input).has_focus
        await pilot.press(*"mann")  # typing digits or letters is not a shortcut while the box has focus
        assert titles(screen) == ["Zauberberg"]
        await pilot.press("escape")
        assert screen.q == "" and not screen.query_one(Input).display and len(screen.shown) == 2

    run(world, scenario)


def test_sort_and_folder_pickers(world):
    async def scenario(app, screen, pilot):
        await pilot.press("s")
        assert isinstance(app.screen, ChoiceScreen)
        await pilot.press("down", "down", "enter")  # Autor
        assert screen.sort == "author"
        assert library_meta.get_extra("sort") == screen.sort

        await pilot.press("s", "end", "enter")  # Längste zuerst
        assert screen.sort == "long"
        assert titles(screen)[0] == "Das Kapital"
        assert "· 900 S." in str(screen.query_one(ListView).query("Label").first().render())

        await pilot.press("o", "down", "enter")  # first folder in the user's order: Roman
        assert screen.folder == "Roman" and screen.going is None
        assert titles(screen) == ["Zauberberg"]  # filtered: the card gives way, the book is in the list
        await pilot.press("o", "home", "enter")  # Alle Ordner
        assert screen.folder is None

    run(world, scenario)


def test_sections_and_continue_key(world, monkeypatch):
    async def scenario(app, screen, pilot):
        await pilot.press("m")
        assert screen.magazines and titles(screen) == ["Jacobin 24"]
        await pilot.press("m")
        assert not screen.magazines
        opened = []
        monkeypatch.setattr(app, "push_screen", lambda s, *a, **k: opened.append(s))
        await pilot.press("c")
        assert len(opened) == 0  # the book has no file here and no login: it says so instead
        assert not isinstance(app.screen, ReaderScreen)

    run(world, scenario)


def test_lengths_are_worked_out_for_downloaded_books_when_sorting_by_length(world, epub):
    path = epub(["<p>" + "wort " * 2000 + "</p>"], title="Lokal")  # ~10000 chars: 6 pages
    path.rename(world / "lokal.epub")

    async def scenario(app, screen, pilot):
        await pilot.press("s", "end", "enter")
        for _ in range(60):
            await pilot.pause(0.1)
            if library_meta.local_pages():
                break
        await pilot.pause(0.5)
        row = next(r for r in screen.rows if r.title == "lokal")
        assert library_meta.local_pages() == {row.key: 6} and row.pages == 6

    run(world, scenario)