"""Tests for GET /api/sync/status — sync monitor.

Seeds 2 SyncState cursors and 3 SyncRun audit rows and asserts the aggregate
shape ``{states, recent_runs}``, ordering of runs (newest first), and the
``recent`` cap.
"""

from __future__ import annotations

import datetime as dt

from sqlalchemy.ext.asyncio import AsyncSession

from app.db.models import SyncRun, SyncState


async def _seed(session: AsyncSession) -> None:
    session.add_all(
        [
            SyncState(
                state_id=1,
                entity_type="message",
                channel="wechat",
                scope_id="wx_owner_1",
                last_version="v100",
                last_timestamp=1000,
                last_synced_at=dt.datetime(2026, 8, 1, 10, 0, 0, tzinfo=dt.UTC),
            ),
            SyncState(
                state_id=2,
                entity_type="customer",
                channel="whatsapp",
                scope_id=None,
                last_version="v9",
                last_timestamp=2000,
            ),
            SyncRun(
                run_id=1,
                entity_type="message",
                channel="wechat",
                scope_id="wx_owner_1",
                status="success",
                started_at=dt.datetime(2026, 8, 1, 9, 0, 0, tzinfo=dt.UTC),
                finished_at=dt.datetime(2026, 8, 1, 9, 0, 5, tzinfo=dt.UTC),
                records_fetched=100,
                records_upserted=95,
            ),
            SyncRun(
                run_id=2,
                entity_type="customer",
                channel="whatsapp",
                status="failed",
                started_at=dt.datetime(2026, 8, 1, 10, 0, 0, tzinfo=dt.UTC),
                records_fetched=0,
                records_upserted=0,
                error="upstream 500",
            ),
            SyncRun(
                run_id=3,
                entity_type="message",
                channel="wechat",
                status="running",
                started_at=dt.datetime(2026, 8, 1, 11, 0, 0, tzinfo=dt.UTC),
                records_fetched=0,
                records_upserted=0,
            ),
        ]
    )
    await session.commit()


async def test_status_returns_states_and_recent_runs(make_client):
    """``GET /api/sync/status`` -> both keys present with correct shapes."""
    client = await make_client(_seed)
    r = await client.get("/api/sync/status")
    assert r.status_code == 200
    body = r.json()
    assert set(body.keys()) == {"states", "recent_runs"}

    assert len(body["states"]) == 2
    for key in (
        "state_id",
        "entity_type",
        "channel",
        "scope_id",
        "last_version",
        "last_timestamp",
        "last_synced_at",
    ):
        assert key in body["states"][0]

    assert len(body["recent_runs"]) == 3
    for key in (
        "run_id",
        "entity_type",
        "channel",
        "scope_id",
        "status",
        "started_at",
        "finished_at",
        "records_fetched",
        "records_upserted",
        "error",
    ):
        assert key in body["recent_runs"][0]


async def test_recent_runs_ordered_newest_first(make_client):
    """Runs ordered by ``started_at desc`` -> run 3, 2, 1."""
    client = await make_client(_seed)
    r = await client.get("/api/sync/status")
    body = r.json()
    ids = [run["run_id"] for run in body["recent_runs"]]
    assert ids == [3, 2, 1]


async def test_recent_limit_caps_results(make_client):
    """``?recent=2`` -> only the 2 most recent runs."""
    client = await make_client(_seed)
    r = await client.get("/api/sync/status", params={"recent": 2})
    assert r.status_code == 200
    body = r.json()
    assert len(body["recent_runs"]) == 2
    assert [run["run_id"] for run in body["recent_runs"]] == [3, 2]


async def test_empty_db_returns_empty_lists(make_client):
    """No seed -> 200 with empty states + recent_runs (no crash)."""
    async def empty_seed(session: AsyncSession) -> None:
        await session.commit()

    client = await make_client(empty_seed)
    r = await client.get("/api/sync/status")
    assert r.status_code == 200
    body = r.json()
    assert body == {"states": [], "recent_runs": []}