import tempfile
from pathlib import Path

import pytest
from httpx import ASGITransport, AsyncClient

from app.core.events import EventBus
from app.core.queue import DownloadQueue
from app.core.storage import SqliteStorage
from app.main import create_app


@pytest.fixture
async def client():
    """Приложение без воркеров и lifespan — состояние подкладываем вручную,
    чтобы тесты роутов не качали реальные файлы."""
    app = create_app()
    storage = SqliteStorage(Path(tempfile.mkdtemp()) / "test.db")
    await storage.init()
    app.state.storage = storage
    app.state.queue = DownloadQueue()
    app.state.events = EventBus()

    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://test") as c:
        yield c, app
    await storage.close()


async def test_create_and_list(client):
    c, app = client
    resp = await c.post("/api/downloads", json={"urls": ["https://e.com/a.zip", "https://e.com/b.zip"]})
    assert resp.status_code == 201
    created = resp.json()
    assert len(created) == 2
    assert app.state.queue.qsize() == 2

    resp = await c.get("/api/downloads")
    assert resp.status_code == 200
    assert len(resp.json()) == 2


async def test_create_empty_rejected(client):
    c, _ = client
    resp = await c.post("/api/downloads", json={"urls": ["  ", ""]})
    assert resp.status_code == 400


async def test_create_validation_requires_urls(client):
    c, _ = client
    resp = await c.post("/api/downloads", json={"urls": []})
    assert resp.status_code == 422  # min_length=1


async def test_delete(client):
    c, _ = client
    created = (await c.post("/api/downloads", json={"urls": ["https://e.com/a.zip"]})).json()
    did = created[0]["id"]
    assert (await c.delete(f"/api/downloads/{did}")).status_code == 204
    assert (await c.delete(f"/api/downloads/{did}")).status_code == 404


async def test_health(client):
    c, _ = client
    resp = await c.get("/api/health")
    assert resp.status_code == 200 and resp.json()["status"] == "ok"