from unittest.mock import AsyncMock, Mock

from fastapi.testclient import TestClient

from app.api.controllers.agent_runs import get_session
from app.api.dependencies.auth import build_request_context
from app.core.contracts import RequestContext
from app.main import create_app


def test_unknown_agent_returns_contract_404_without_database_write():
    app = create_app()
    session = AsyncMock()
    session.add = Mock()

    async def context():
        return RequestContext(user_id="1", trace_id="test-trace", roles=("customer",),
                              permissions=("agent:run",))

    async def database():
        yield session

    app.dependency_overrides[build_request_context] = context
    app.dependency_overrides[get_session] = database
    with TestClient(app) as client:
        response = client.post("/api/v1/agent-runs", json={
            "agent_type": "no_such_agent", "message": "test", "session_id": "test",
            "idempotency_key": "1234567890123456",
        })
    assert response.status_code == 404
    assert response.json()["error"]["code"] == "AGENT_TYPE_NOT_FOUND"
    assert response.json()["meta"]["trace_id"] == "test-trace"
    session.add.assert_not_called()
    session.execute.assert_not_awaited()
    session.flush.assert_not_awaited()