"""Homepage storage resolves its root from settings rather than from `__file__`.

The previous module derived its directory from ``Path(__file__).parents[3]``,
which could not be configured and resolved into the installed package directory
outside a source checkout.
"""

import pytest

from transcription.config import Settings
from transcription.ui.homepage_store import homepage_dir
from transcription.ui.homepage_store import latest_homepage_image
from transcription.ui.homepage_store import list_homepage_images
from transcription.ui.homepage_store import read_homepage_markdown
from transcription.ui.homepage_store import save_homepage_markdown
from transcription.ui.homepage_store import store_homepage_image

PNG_BYTES = bytes.fromhex(
    "89504e470d0a1a0a0000000d49484452000000010000000108060000001f15c4890000000a49444154789c6360000002000100"
    "05fe02fea7b1b8000000004945"
) + b"NDAE\xae\x42\x60\x82"


def _settings(tmp_path) -> Settings:
    return Settings(openrouter_api_key="test-key-abc123", homepage_dir=tmp_path / "homepage")


def test_homepage_dir_follows_the_configured_setting(tmp_path):
    settings = _settings(tmp_path)

    assert homepage_dir(settings) == tmp_path / "homepage"


def test_markdown_round_trips_through_the_configured_directory(tmp_path):
    settings = _settings(tmp_path)

    assert read_homepage_markdown(settings) == ""

    save_homepage_markdown("# Archive", settings)

    assert (tmp_path / "homepage" / "homepage.md").read_text(encoding="utf-8") == "# Archive"
    assert read_homepage_markdown(settings) == "# Archive"


@pytest.mark.asyncio
async def test_images_are_stored_and_listed_from_the_configured_directory(tmp_path):
    settings = _settings(tmp_path)

    assert list_homepage_images(settings) == []
    assert latest_homepage_image(settings) is None

    stored = await store_homepage_image(filename="banner.png", file_bytes=PNG_BYTES, settings=settings)

    assert stored.parent == tmp_path / "homepage"
    assert list_homepage_images(settings) == [stored]
    assert latest_homepage_image(settings) == stored


def test_two_configurations_do_not_share_storage(tmp_path):
    first = Settings(openrouter_api_key="test-key-abc123", homepage_dir=tmp_path / "a")
    second = Settings(openrouter_api_key="test-key-abc123", homepage_dir=tmp_path / "b")

    save_homepage_markdown("first", first)

    assert read_homepage_markdown(second) == ""