import pytest
from pathlib import Path
from PIL import Image
from logimage.infrastructure.image.local_file_source import LocalFileImageSource
from logimage.domain.value_objects.image_data import ImageData


def test_fetch_returns_image_data(tmp_path: Path) -> None:
    img = Image.new("RGB", (50, 50), color=(100, 150, 200))
    path = tmp_path / "test_icon.png"
    img.save(path, format="PNG")

    source = LocalFileImageSource(path)
    result = source.fetch()

    assert isinstance(result, ImageData)
    assert result.content == path.read_bytes()
    assert result.title == "test_icon"


def test_fetch_title_is_stem(tmp_path: Path) -> None:
    img = Image.new("RGB", (10, 10))
    path = tmp_path / "my_cool_image.jpg"
    img.save(path, format="JPEG")

    source = LocalFileImageSource(path)
    result = source.fetch()

    assert result.title == "my_cool_image"


def test_fetch_raises_if_file_not_found() -> None:
    source = LocalFileImageSource(Path("/nonexistent/image.png"))
    with pytest.raises(FileNotFoundError):
        source.fetch()