"""Tests for health monitoring."""

import shutil
import tempfile
from pathlib import Path
from unittest.mock import patch

from vigilar.health.pruner import find_prunable_recordings, calculate_disk_usage_pct
from vigilar.health.monitor import HealthCheck, HealthStatus, check_disk, check_mqtt_port


class TestDiskCheck:
    @patch("vigilar.health.monitor.shutil.disk_usage")
    def test_healthy(self, mock_usage):
        mock_usage.return_value = type("U", (), {"total": 100_000_000_000, "used": 50_000_000_000, "free": 50_000_000_000})()
        result = check_disk("/var/vigilar", warn_pct=85, critical_pct=95)
        assert result.status == HealthStatus.HEALTHY

    @patch("vigilar.health.monitor.shutil.disk_usage")
    def test_warning(self, mock_usage):
        mock_usage.return_value = type("U", (), {"total": 100_000_000_000, "used": 90_000_000_000, "free": 10_000_000_000})()
        result = check_disk("/var/vigilar", warn_pct=85, critical_pct=95)
        assert result.status == HealthStatus.WARNING

    @patch("vigilar.health.monitor.shutil.disk_usage")
    def test_critical(self, mock_usage):
        mock_usage.return_value = type("U", (), {"total": 100_000_000_000, "used": 97_000_000_000, "free": 3_000_000_000})()
        result = check_disk("/var/vigilar", warn_pct=85, critical_pct=95)
        assert result.status == HealthStatus.CRITICAL


class TestPruner:
    def test_calculate_disk_pct(self):
        with tempfile.TemporaryDirectory() as d:
            pct = calculate_disk_usage_pct(d)
            assert 0 <= pct <= 100

    def test_find_prunable_empty(self, test_db):
        result = find_prunable_recordings(test_db, limit=10)
        assert result == []


class TestMQTTCheck:
    @patch("vigilar.health.monitor.socket.create_connection")
    def test_mqtt_reachable(self, mock_conn):
        mock_conn.return_value.__enter__ = lambda s: s
        mock_conn.return_value.__exit__ = lambda s, *a: None
        result = check_mqtt_port("127.0.0.1", 1883)
        assert result.status == HealthStatus.HEALTHY

    @patch("vigilar.health.monitor.socket.create_connection")
    def test_mqtt_unreachable(self, mock_conn):
        mock_conn.side_effect = ConnectionRefusedError()
        result = check_mqtt_port("127.0.0.1", 1883)
        assert result.status == HealthStatus.CRITICAL