import asyncio

import pytest

from app.analysis.alerts import Alert
from app.analysis.confluence import Cluster, cluster_levels
from app.analysis.levels import Level, LevelKind, Side
from app.analysis.manual_lines import ManualLine
from app.bars.models import Timeframe
from app.config import Settings
from app.runtime import Runtime


def runtime(tmp_path, **overrides) -> Runtime:
    settings = Settings(
        manual_lines_path=tmp_path / "manual_lines.json",
        # Isolated per test: the default is relative to the working directory,
        # so without this every test shares one alert-suppression file and they
        # silence each other.
        alert_state_path=tmp_path / "alert_state.json",
        ntfy_topic=overrides.pop("ntfy_topic", ""),
        **overrides,
    )
    return Runtime(settings)


def alert() -> Alert:
    level = Level(
        "pd:high", LevelKind.HORIZONTAL, Timeframe.D1, Side.RESISTANCE, 16, 1, "PDH",
        100, 5000, 0, None, 0, 100, 100, False, False,
    )
    cluster = Cluster("cl_x", Side.RESISTANCE, 5000, 5000, 5000, 16, [level], 1.0)
    return Alert(cluster, "BEARISH ZONE /ES")


def test_one_engine_serves_every_connection(tmp_path):
    # Previously each WebSocket built its own engine, so reloading the page
    # cleared the cooldown and the same zone alerted again immediately.
    instance = runtime(tmp_path)
    assert instance.alert_engine is not None
    assert instance.alert_engine.min_score == instance.settings.confluence_min_score


def test_alerts_reach_subscribers(tmp_path):
    instance = runtime(tmp_path)
    queue: asyncio.Queue = asyncio.Queue(maxsize=10)
    instance.subscribers.add(queue)

    async def scenario():
        instance.dispatch_alerts([alert()])
        return queue.get_nowait()

    event = asyncio.run(scenario())
    assert event["type"] == "alert"
    assert event["message"] == "BEARISH ZONE /ES"


def test_ntfy_failure_does_not_propagate(tmp_path, monkeypatch):
    # send_ntfy used to be awaited inside the WebSocket loop, whose except
    # clause only caught disconnects — so a push outage killed the connection.
    instance = runtime(tmp_path, ntfy_topic="chart-test")

    async def explode(*args, **kwargs):
        raise RuntimeError("ntfy is down")

    monkeypatch.setattr("app.runtime.send_ntfy", explode)
    asyncio.run(instance.notify("anything"))


def test_blank_topic_sends_nothing(tmp_path, monkeypatch):
    instance = runtime(tmp_path)
    calls = []

    async def record(server, topic, message):
        calls.append(topic)

    monkeypatch.setattr("app.runtime.send_ntfy", record)
    asyncio.run(instance.notify("anything"))
    assert calls == [""]  # send_ntfy itself is the one that short-circuits


def test_tick_bars_update_higher_timeframes_without_doubling_volume(tmp_path):
    # The aggregator accumulates with `current.v += incoming.v`, so a forming
    # minute re-sent on every tick would add its volume to each higher
    # timeframe again and again. The provisional path must combine, not
    # accumulate: five ticks in one minute leave the hour's volume equal to the
    # closed minutes plus the live one, exactly once.
    from app.bars.models import Bar

    instance = runtime(tmp_path)

    def minute(t, close, volume, closed=True):
        return Bar(tf=Timeframe.M1, t=t, o=close, h=close, l=close, c=close,
                   v=volume, closed=closed, symbol="/ES", source="test")

    base = 1786356000  # top of an hour
    asyncio.run(instance.on_bar(minute(base, 100.0, 10)))
    asyncio.run(instance.on_bar(minute(base + 60, 101.0, 20)))
    settled = [b for b in instance.store.get(Timeframe.H1) if b.t == base][-1].v
    assert settled == 30

    for _ in range(5):
        asyncio.run(instance.on_bar(minute(base + 120, 102.0, 7, closed=False)))

    hour = [b for b in instance.store.get(Timeframe.H1) if b.t == base][-1]
    assert hour.v == 37, "the live minute's volume must be added once, not per tick"
    assert hour.c == 102.0
    assert hour.closed is False


def test_a_tripped_manual_alert_stays_disarmed_after_rebuild_and_restart(tmp_path):
    instance = runtime(tmp_path)
    instance.manual_lines.add(
        ManualLine(
            "ml_once", Timeframe.D1, Side.RESISTANCE, 1000, 5000, 0.0,
            1000, 1000, note="one shot",
        )
    )
    instance.rebuild_levels()
    clusters = cluster_levels(instance.levels, 1000, 5000, 1)
    alerts = instance.alert_engine.evaluate(clusters, 5000, 1, 1000, "/ES")

    async def dispatch():
        instance.dispatch_alerts(alerts)
        await asyncio.gather(*instance._notify_tasks)

    asyncio.run(dispatch())

    assert len(alerts) == 1
    assert alerts[0].tripped == ("ml_once",)
    assert instance.manual_lines.lines["ml_once"].armed is False
    assert next(level for level in instance.levels if level.id == "ml_once").armed is False

    restarted = runtime(tmp_path)
    assert restarted.manual_lines.lines["ml_once"].armed is False
    assert next(level for level in restarted.levels if level.id == "ml_once").armed is False