"""Real Gradio HTTP transport, with a synthetic CPU engine. Never loads weights."""
import json
import urllib.parse
import urllib.request

import pytest
from gradio_client import Client

from test_lifecycle import FakeEngine


def test_http_session_injection_file_access_and_api_errors(monkeypatch, tmp_path):
    monkeypatch.setenv("ZONOS_UI_ONLY", "1")
    import app

    # The bound controller retains its identity in Gradio's registered callbacks.
    monkeypatch.setattr(app.controller, "engine", FakeEngine())
    monkeypatch.setattr(app.controller, "outputs", tmp_path / "outputs")
    app.controller.outputs.mkdir()
    _, url, _ = app.demo.launch(prevent_thread_lock=True, quiet=True,
                              allowed_paths=[str(app.controller.outputs.resolve())])
    try:
        client = Client(url, verbose=False)
        args = ["A short test.", json.dumps({"voice":"Savannah", "language":"en_us"}),
                "Preset", None, False, True, 42, False, .75, .69, 80, 2.4, 0]
        result = client.predict(*args, api_name="/generate")
        take = json.loads(result[0])
        with urllib.request.urlopen(urllib.parse.urljoin(url, take["url"])) as response:
            assert response.status == 200 and response.read(4) == b"RIFF"
        assert take["seed"] == 42 and app.controller.jobs.active() == 0
        files = list(app.controller.outputs.glob("*.wav"))
        args[0] = ""
        with pytest.raises(Exception, match="Write something"):
            client.predict(*args, api_name="/generate")
        assert list(app.controller.outputs.glob("*.wav")) == files
        client.predict(api_name="/cancel")  # Request injected with this client's session.
        assert app.controller.jobs.active() == 0
        client.close()
    finally:
        app.demo.close()