import asyncio

import httpx
import pytest

from src import main


@pytest.mark.anyio
async def test_review_detail_endpoint_returns_normalized_no_store_payload(monkeypatch):
    async def requested(repository, number):
        return (repository, number) == ("stackchain/api", 7)

    async def detail(repository, number):
        assert (repository, number) == ("stackchain/api", 7)
        return {
            "repository": repository,
            "number": number,
            "title": "Review API",
            "body": "Check retries",
            "url": "https://forge.example/stackchain/api/pulls/7",
            "author": "alex",
            "ci_state": "success",
            "files": [{"filename": "src/api.py", "status": "modified", "additions": 8, "deletions": 2}],
            "reviews": [{"user": {"login": "sam"}, "state": "APPROVED", "body": "Good"}],
        }

    monkeypatch.setattr(main, "is_requested_review", requested)
    monkeypatch.setattr(main, "pull_review_detail", detail)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.get("/api/v1/repos/stackchain/api/pulls/7/review")

    assert response.status_code == 200
    assert response.headers["cache-control"] == "no-store"
    assert response.json()["files"][0]["filename"] == "src/api.py"


@pytest.mark.anyio
async def test_review_detail_rejects_pulls_not_requested_from_service_user(monkeypatch):
    async def requested(repository, number):
        return False

    monkeypatch.setattr(main, "is_requested_review", requested)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.get("/api/v1/repos/private/secret/pulls/9/review")

    assert response.status_code == 404
    assert response.headers["cache-control"] == "no-store"


@pytest.mark.anyio
async def test_review_detail_has_one_retryable_deadline_and_cancels_pending_work(monkeypatch):
    cancelled = asyncio.Event()

    async def requested(repository, number):
        try:
            await asyncio.Event().wait()
        finally:
            cancelled.set()

    monkeypatch.setattr(main, "is_requested_review", requested)
    monkeypatch.setattr(main, "REVIEW_DETAIL_TIMEOUT_SECONDS", 0.01)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.get("/api/v1/repos/stackchain/api/pulls/7/review")

    assert response.status_code == 503
    assert response.headers["cache-control"] == "no-store"
    assert response.headers["retry-after"] == "1"
    assert response.json() == {
        "error": "Pull request review details timed out. Please retry."
    }
    assert cancelled.is_set()


@pytest.mark.anyio
async def test_public_review_endpoint_does_not_expose_service_token_mutations():
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.post(
            "/api/v1/repos/stackchain/api/pulls/7/review",
            json={"action": "approve"},
        )

    assert response.status_code == 405