from __future__ import annotations


async def _create_domain(client, slug: str = "bulk-domain"):
    r = await client.post("/domains/", json={"slug": slug, "name": "Bulk Domain"})
    assert r.status_code == 201
    return r.json()


async def _create_topic(client, domain_slug: str = "bulk-domain"):
    r = await client.post(
        "/topics/",
        json={"slug": "bulk-topic", "title": "Bulk Topic", "domain": domain_slug},
    )
    assert r.status_code == 201
    return r.json()


async def _create_workstream(client, topic_id: str):
    r = await client.post(
        "/workstreams/",
        json={"topic_id": topic_id, "slug": "bulk-ws", "title": "Bulk Workstream"},
    )
    assert r.status_code == 201
    return r.json()


async def _create_task(client, workstream_id: str, title: str):
    r = await client.post(
        "/tasks/",
        json={"workstream_id": workstream_id, "title": title},
    )
    assert r.status_code == 201
    return r.json()


async def _seed_two_tasks(client):
    await _create_domain(client)
    topic = await _create_topic(client)
    ws = await _create_workstream(client, topic["id"])
    first = await _create_task(client, ws["id"], "First bulk task")
    second = await _create_task(client, ws["id"], "Second bulk task")
    return ws, first, second


class TestTaskBulkStatusSync:
    async def test_updates_many_tasks_and_emits_progress_events(self, client):
        ws, first, second = await _seed_two_tasks(client)

        r = await client.post(
            "/tasks/bulk-status-sync",
            json={
                "author": "codex",
                "session_id": "session-1",
                "updates": [
                    {"task_id": first["id"], "status": "progress"},
                    {"task_id": second["id"], "status": "wait", "blocking_reason": "needs operator"},
                ],
            },
        )

        assert r.status_code == 200
        body = r.json()
        assert [task["id"] for task in body["updated"]] == [first["id"], second["id"]]
        assert [task["status"] for task in body["updated"]] == ["progress", "wait"]
        assert body["updated"][1]["blocking_reason"] == "needs operator"
        assert len(body["progress_event_ids"]) == 2

        progress = await client.get("/progress/", params={"workstream_id": ws["id"]})
        assert progress.status_code == 200
        events = progress.json()
        assert [event["id"] for event in events] == body["progress_event_ids"]
        assert [event["event_type"] for event in events] == ["task_status_changed", "task_status_changed"]
        assert events[0]["author"] == "codex"
        assert events[0]["session_id"] == "session-1"
        assert events[0]["detail"]["bulk_status_sync"] is True
        assert events[0]["detail"]["previous_status"] == "todo"
        assert events[0]["detail"]["status"] == "progress"

    async def test_duplicate_task_ids_are_rejected_without_updates(self, client):
        _, first, _ = await _seed_two_tasks(client)

        r = await client.post(
            "/tasks/bulk-status-sync",
            json={
                "updates": [
                    {"task_id": first["id"], "status": "progress"},
                    {"task_id": first["id"], "status": "done"},
                ],
            },
        )

        assert r.status_code == 400
        assert r.json()["detail"]["task_ids"] == [first["id"]]

        task = await client.get(f"/tasks/{first['id']}")
        assert task.status_code == 200
        assert task.json()["status"] == "todo"

    async def test_missing_task_ids_are_rejected_without_updates(self, client):
        import uuid

        _, first, _ = await _seed_two_tasks(client)
        missing_id = str(uuid.uuid4())

        r = await client.post(
            "/tasks/bulk-status-sync",
            json={
                "updates": [
                    {"task_id": first["id"], "status": "progress"},
                    {"task_id": missing_id, "status": "done"},
                ],
            },
        )

        assert r.status_code == 404
        assert r.json()["detail"]["task_ids"] == [missing_id]

        task = await client.get(f"/tasks/{first['id']}")
        assert task.status_code == 200
        assert task.json()["status"] == "todo"