"""Unit tests for /api/v1/flow/auditor/* endpoints.

Uses a minimal FastAPI test client built from the new router only.
No DB required — Choreographer is mocked.
"""

from __future__ import annotations

from unittest.mock import AsyncMock, MagicMock
from uuid import uuid4

import pytest
from fastapi import FastAPI
from fastapi.testclient import TestClient
from roboco.api.deps import get_choreographer
from roboco.api.routes.v1.flow_auditor import router

_HTTP_200 = 200

_AGENT_ID = str(uuid4())
_TASK_ID = str(uuid4())
_HEADERS = {"X-Agent-ID": _AGENT_ID, "X-Agent-Role": "auditor"}


def _make_envelope(
    status: str = "ok", task_id: str | None = None, **extra: object
) -> MagicMock:
    """Return a mock Envelope whose as_dict() returns a predictable payload."""
    env = MagicMock()
    payload: dict[str, object] = {"status": status, "task_id": task_id, "next": "..."}
    payload.update(extra)
    env.as_dict.return_value = payload
    return env


def _build_app(mock_choreographer: MagicMock) -> FastAPI:
    """Build minimal FastAPI app with the flow_auditor router and a mocked dep."""
    app = FastAPI()
    app.include_router(router)
    app.dependency_overrides[get_choreographer] = lambda: mock_choreographer
    return app


@pytest.mark.asyncio
async def test_triage_returns_envelope() -> None:
    """POST /api/v1/flow/auditor/triage returns 200 with envelope shape."""
    mock_chore = MagicMock()
    mock_chore.auditor_triage = AsyncMock(
        return_value=_make_envelope(status="blocked", task_id=_TASK_ID)
    )
    client = TestClient(_build_app(mock_chore))

    resp = client.post(
        "/api/v1/flow/auditor/triage",
        json={},
        headers=_HEADERS,
    )

    assert resp.status_code == _HTTP_200
    body = resp.json()
    assert body["status"] == "blocked"
    mock_chore.auditor_triage.assert_awaited_once()


@pytest.mark.asyncio
async def test_i_am_idle_returns_envelope() -> None:
    """POST /api/v1/flow/auditor/i_am_idle delegates to Choreographer.i_am_idle."""
    mock_chore = MagicMock()
    mock_chore.i_am_idle = AsyncMock(return_value=_make_envelope(status="idle"))
    client = TestClient(_build_app(mock_chore))

    resp = client.post(
        "/api/v1/flow/auditor/i_am_idle",
        json={},
        headers=_HEADERS,
    )

    assert resp.status_code == _HTTP_200
    body = resp.json()
    assert body["status"] == "idle"
    mock_chore.i_am_idle.assert_awaited_once()
