"""Measurement fixture for a document of roughly twelve hundred pages.

Marked slow on purpose. It is here to measure memory and wall clock time of the
chunked pipeline, not to assert exact numbers.
"""

from __future__ import annotations

import time

import pytest

pytest.importorskip("weasyprint")

from app.config import Settings  # noqa: E402
from app.engines.weasy import WeasyPrintEngine  # noqa: E402
from app.models import ChunkSettings, ConvertRequest, PageNumbers, Source  # noqa: E402
from app.services.pipeline import ConversionPipeline  # noqa: E402

pytestmark = [pytest.mark.asyncio, pytest.mark.slow]


async def test_large_document_renders_in_chunks(tmp_path, large_document: str) -> None:
    pipeline = ConversionPipeline({"weasyprint": WeasyPrintEngine()}, Settings())
    request = ConvertRequest(
        source=Source(html=large_document),
        engine="weasyprint",
        page_numbers=PageNumbers(enabled=True),
        chunking=ChunkSettings(enabled=True, pages_per_chunk=50),
    )

    started = time.monotonic()
    result = await pipeline.run(request, tmp_path)
    duration = time.monotonic() - started

    print(f"stranek: {result.page_count}, cas: {duration:.1f} s")

    assert result.page_count > 1000
    assert result.path.exists()