import pytest
from aioresponses import aioresponses
from app import fetch_image, DERPYBOORU_API_SEARCH


@pytest.mark.asyncio
async def test_fetch_image_success():
    """Тестируем успешный возврат картинки из API"""
    tags = ["gay"]

    mock_data = {
        "images": [
            {
                "id": 123,
                "uploader": "tester",
                "view_url": "https://derpibooru.org/images/123",
                "tags": ["gay", "cute"],
                "representations": {
                    "full": "https://example.com/full.png",
                    "large": "https://example.com/large.png"
                }
            }
        ]
    }

    with aioresponses() as mocked:
        mocked.get(DERPYBOORU_API_SEARCH, status=200, payload=mock_data)

        async with __import__("aiohttp").ClientSession() as session:
            result = await fetch_image(session, tags)

    assert result is not None
    url, author, source, img_tags = result
    assert url == "https://example.com/full.png"
    assert author == "tester"
    assert source == "https://derpibooru.org/images/123"
    assert "gay" in img_tags


@pytest.mark.asyncio
async def test_fetch_image_empty():
    """Тестируем ситуацию, когда API не вернул картинок"""
    tags = ["nonexistent"]

    with aioresponses() as mocked:
        mocked.get(DERPYBOORU_API_SEARCH, status=200, payload={"images": []})

        async with __import__("aiohttp").ClientSession() as session:
            result = await fetch_image(session, tags)

    assert result is None