"""Integration tests for AutomationFailuresCheck.

Uses real aiosqlite Storage + EventEmitter + mocked HTTP.
"""
from __future__ import annotations

import json
from pathlib import Path
from typing import AsyncGenerator

import pytest
import pytest_asyncio
from aioresponses import aioresponses

from ha_diag.checks.automation_failures import AutomationFailuresCheck
from ha_diag.config import Settings
from ha_diag.event_emitter import EventEmitter
from ha_diag.ha_client import HAClient, make_session
from ha_diag.models import HAEventType
from ha_diag.storage import Storage

HA_URL = "http://ha-test-ken:8123"


def _settings(**overrides) -> Settings:
    defaults: dict = {
        "ha_url": HA_URL,
        "ha_token": "test-token",
        "node_name": "piha",
        "location_tag": "ken",
        "alert_cooldown_hours": 0.0,
        "automation_failure_threshold": 3,
        "check_interval": 60,
        "check_interval_unavailable": 3600,
    }
    defaults.update(overrides)
    return Settings(**defaults)


@pytest_asyncio.fixture
async def storage(tmp_path: Path) -> AsyncGenerator[Storage, None]:
    s = Storage(tmp_path / "integration_test.db")
    await s.open()
    yield s
    await s.close()


@pytest.fixture
def events_dir(tmp_path: Path) -> Path:
    d = tmp_path / "events"
    d.mkdir()
    return d


def _auto_states(*entity_ids: str) -> list[dict]:
    return [
        {
            "entity_id": eid,
            "state": "on",
            "attributes": {"friendly_name": eid.split(".")[-1].replace("_", " ").title()},
        }
        for eid in entity_ids
    ]


def _fail_traces(n: int = 3) -> list[dict]:
    return [
        {
            "run_id": f"run-{i}",
            "timestamp": f"2026-05-27T{10+i:02d}:00:00+00:00",
            "trigger": "state",
            "state": "stopped",
            "error": f"Script error #{i}",
        }
        for i in range(n)
    ]


def _ok_traces(n: int = 3) -> list[dict]:
    return [
        {
            "run_id": f"run-{i}",
            "timestamp": f"2026-05-27T{10+i:02d}:00:00+00:00",
            "trigger": "state",
            "state": "stopped",
            "error": None,
        }
        for i in range(n)
    ]


@pytest.mark.integration
async def test_failing_automation_emits_event_and_writes_file(
    storage: Storage, events_dir: Path
):
    """3 consecutive failures → event file written with correct structure."""
    states = _auto_states("automation.morning_lights")
    traces = _fail_traces(3)
    emitter = EventEmitter(events_dir, node_name="piha", location_tag="ken")

    with aioresponses() as m:
        m.get(f"{HA_URL}/api/states", payload=states)
        m.get(f"{HA_URL}/api/trace/automation/automation.morning_lights", payload=traces)
        async with make_session("test-token") as session:
            client = HAClient(HA_URL, session)
            check = AutomationFailuresCheck(client, storage, _settings())
            results = await check.run()

    assert len(results) == 1
    r = results[0]
    assert r.event_type == HAEventType.ha_automation_failing
    assert r.payload["entity_id"] == "automation.morning_lights"
    assert r.payload["total_recent_failures"] == 3

    emitter.emit(
        event_type=r.event_type,
        severity=r.severity.value,
        service="homeassistant",
        message=r.message,
        payload=r.payload,
    )

    files = list(events_dir.glob("*.json"))
    assert len(files) == 1
    data = json.loads(files[0].read_text())
    assert data["type"] == "ha_automation_failing"
    assert data["payload"]["location_tag"] == "ken"
    assert "last_failures" in data["payload"]


@pytest.mark.integration
async def test_healthy_automation_no_event(storage: Storage):
    """All recent runs successful → no event."""
    states = _auto_states("automation.morning_lights")
    traces = _ok_traces(3)

    with aioresponses() as m:
        m.get(f"{HA_URL}/api/states", payload=states)
        m.get(f"{HA_URL}/api/trace/automation/automation.morning_lights", payload=traces)
        async with make_session("test-token") as session:
            client = HAClient(HA_URL, session)
            check = AutomationFailuresCheck(client, storage, _settings())
            results = await check.run()

    assert results == []


@pytest.mark.integration
async def test_cooldown_suppresses_duplicate(storage: Storage):
    """Second run within cooldown window → no duplicate event."""
    states = _auto_states("automation.morning_lights")
    traces = _fail_traces(3)
    settings = _settings(alert_cooldown_hours=6.0)

    for _ in range(2):
        with aioresponses() as m:
            m.get(f"{HA_URL}/api/states", payload=states)
            m.get(f"{HA_URL}/api/trace/automation/automation.morning_lights", payload=traces)
            async with make_session("test-token") as session:
                check = AutomationFailuresCheck(
                    HAClient(HA_URL, session), storage, settings
                )
                results = await check.run()
        if _ == 0:
            assert len(results) == 1
        else:
            assert results == []