"""The dashboard starts from a curated layout, the duplicate widgets are gone,
and the Overview says what each number counts (#5213)."""
from datetime import datetime, timedelta, timezone
from types import SimpleNamespace

from quart import render_template, session

from steward.core.status import StatusEntry
from steward.core.widgets import RECOMMENDED, RETIRED, WIDGET_REGISTRY, recommended_layout
from steward.status.routes import overview_alerts
from tests.test_style_tokens import hex_colours

ALL_ON = {p: {"enabled": True} for p in ("docker", "host_agent", "traefik", "unifi", "snmp")}


def _overlap(a, b):
    return (a["x"] < b["x"] + b["w"] and b["x"] < a["x"] + a["w"]
            and a["y"] < b["y"] + b["h"] and b["y"] < a["y"] + a["h"])


def test_retired_widgets_point_at_the_one_that_replaced_them():
    for old, new in RETIRED.items():
        assert old not in WIDGET_REGISTRY and new in WIDGET_REGISTRY
    assert all(key in WIDGET_REGISTRY for key, *_ in RECOMMENDED)


def test_the_recommended_layout_fills_rows_without_overlap():
    items = recommended_layout(ALL_ON)
    assert [i["key"] for i in items] == [key for key, *_ in RECOMMENDED]
    assert items[0] == {"key": "status_overview", "x": 0, "y": 0, "w": 12, "h": 3, "config": {}}
    assert (items[1]["x"], items[1]["y"], items[2]["x"], items[2]["y"]) == (0, 3, 6, 3)
    for i, a in enumerate(items):
        assert a["x"] + a["w"] <= 12
        assert not any(_overlap(a, b) for b in items[i + 1:]), a


def test_the_recommended_layout_skips_what_is_not_enabled():
    keys = [i["key"] for i in recommended_layout({})]
    assert keys == ["status_overview", "hosts_overview", "monitors", "uptime_summary"]
    # uptime no longer fits beside the monitors, so it starts the next row
    items = recommended_layout({})
    assert (items[3]["x"], items[3]["y"]) == (0, 10)


def test_overview_alerts_put_the_breaching_first():
    from steward.models.alerts import AlertStateEnum
    ack = SimpleNamespace(state=AlertStateEnum.acknowledged, last_transition_at=None, no_data_since=None)
    silent = SimpleNamespace(state=AlertStateEnum.inactive, last_transition_at=None,
                             no_data_since=datetime(2026, 10, 7, tzinfo=timezone.utc))
    firing = SimpleNamespace(state=AlertStateEnum.firing, last_transition_at=datetime(2026, 10, 6, tzinfo=timezone.utc),
                             no_data_since=None)
    rows = overview_alerts([(ack, "r-ack"), (silent, "r-silent"), (firing, "r-firing")])
    assert [(r["rule"], r["label"]) for r in rows] == [
        ("r-firing", "firing"), ("r-silent", "no_data"), ("r-ack", "acknowledged")]
    assert rows[1]["since"] == silent.no_data_since      # silent since the series stopped
    assert rows[0]["since"] == firing.last_transition_at


async def test_the_overview_labels_its_counts_and_lists_what_is_wrong(app):
    now = datetime.now(timezone.utc)
    rule = SimpleNamespace(id="r1", name="nas disk full")
    alerts = [{"rule": rule, "label": "firing", "since": now - timedelta(minutes=12)}]
    entries = [
        StatusEntry(kind="http", key="1", name="web", status="up", detail_url="/monitors/1"),
        StatusEntry(kind="tcp", key="2", name="ssh-nas", status="down", detail_url="/monitors/2",
                    since=now - timedelta(hours=2)),
    ]
    async with app.test_request_context("/status/widget"):
        session["user_id"] = "u1"
        page = await render_template("status/widget.html", entries=entries, up=1, down=1, pending=0,
                                     total_hosts=3, alerts=alerts, widget_id="1")
    assert ">Monitors<" in page and ">Alerts<" in page and ">firing<" in page and ">hosts<" in page
    assert '<span class="badge badge-crit">Firing</span>' in page
    assert 'href="/alerts/history?rule=r1"' in page and "12m ago" in page
    assert '<span class="badge badge-crit">Down</span>' in page and "2h ago" in page
    assert page.index("nas disk full") < page.index("ssh-nas")   # alerts, then monitors
    assert ">pending<" not in page                                 # a zero pending count is not shown
    assert not hex_colours(page), hex_colours(page)


async def test_a_quiet_overview_says_so(app):
    async with app.test_request_context("/status/widget"):
        page = await render_template("status/widget.html", entries=[], up=0, down=0, pending=0,
                                     total_hosts=1, alerts=[], widget_id="1")
    assert "No monitors configured, and no alert is firing." in page
    assert ">host<" in page and 'href="/alerts/"' not in page   # the share view has no links


async def test_the_hosts_widget_shows_load(app):
    host = SimpleNamespace(id="h1", name="web-1")
    agent = {"web-1": {"cpu_pct": 12.0, "mem_used_pct": 40.0, "load_1m": 0.734, "fresh": True}}
    async with app.test_request_context("/hosts/overview/widget"):
        page = await render_template("hosts/overview_widget.html", hosts=[host], host_status={},
                                     uptime={}, agent=agent, cpu_sparks={})
    assert ">load</span> 0.73" in page


async def test_a_widget_polls_at_its_own_pace(app):
    defn = {**WIDGET_REGISTRY["uptime_summary"]}
    item = SimpleNamespace(db=SimpleNamespace(id=7, grid_x=0, grid_y=0, grid_w=6, grid_h=5),
                           title="Uptime", defn=defn, hx_url="/uptime/widget")
    async with app.test_request_context("/"):
        page = await render_template("dashboard/_grid_item.html", item=item, can_edit=False, poll_interval=30)
    assert "every 300s" in page
    defn.pop("poll_seconds")
    async with app.test_request_context("/"):
        page = await render_template("dashboard/_grid_item.html", item=item, can_edit=False, poll_interval=30)
    assert "every 30s" in page


async def test_a_grid_item_carries_its_saved_layout(app):
    """#5249: the saved 12-column place and height, which the page fits to
    content in view mode and restores in edit mode."""
    item = SimpleNamespace(db=SimpleNamespace(id=7, grid_x=6, grid_y=3, grid_w=6, grid_h=5),
                           title="Uptime", defn={"poll": False, "detail_url": "/x"}, hx_url="/uptime/widget")
    async with app.test_request_context("/"):
        page = await render_template("dashboard/_grid_item.html", item=item, can_edit=False, poll_interval=30)
    assert 'data-x="6" data-y="3"' in page and 'data-w="6" data-h="5"' in page
    assert 'gs-x="6" gs-y="3"' in page