"""Monitoring service module."""

import logging
from typing import Any, Dict, List, Optional

logger = logging.getLogger(__name__)


class MonitoringService:
    """Monitoring service for tracking application metrics."""

    def __init__(self):
        """Initialize monitoring service."""
        self.metrics: Dict[str, Any] = {}
        self.alerts: List[Dict[str, Any]] = []

    async def record_metric(
        self, name: str, value: float, tags: Optional[Dict[str, str]] = None
    ) -> None:
        """Record a metric.

        Args:
            name: Metric name
            value: Metric value
            tags: Optional tags
        """
        # Stub implementation
        self.metrics[name] = {"value": value, "tags": tags or {}}
        logger.info(f"Recorded metric: {name} = {value}")

    async def record_event(self, event_type: str, data: Dict[str, Any]) -> None:
        """Record an event.

        Args:
            event_type: Type of event
            data: Event data
        """
        # Stub implementation
        logger.info(f"Recorded event: {event_type}")

    async def create_alert(
        self, alert_type: str, message: str, severity: str = "info"
    ) -> None:
        """Create an alert.

        Args:
            alert_type: Type of alert
            message: Alert message
            severity: Alert severity
        """
        # Stub implementation
        alert = {
            "type": alert_type,
            "message": message,
            "severity": severity,
        }
        self.alerts.append(alert)
        logger.warning(f"Alert created: {alert_type} - {message}")

    async def get_metrics(
        self, metric_names: Optional[List[str]] = None
    ) -> Dict[str, Any]:
        """Get metrics.

        Args:
            metric_names: Optional list of metric names to retrieve

        Returns:
            Dictionary of metrics
        """
        # Stub implementation
        if metric_names:
            return {name: self.metrics.get(name) for name in metric_names}
        return self.metrics

    async def get_alerts(self, severity: Optional[str] = None) -> List[Dict[str, Any]]:
        """Get alerts.

        Args:
            severity: Optional severity filter

        Returns:
            List of alerts
        """
        # Stub implementation
        if severity:
            return [alert for alert in self.alerts if alert["severity"] == severity]
        return self.alerts

    async def health_check(self) -> Dict[str, Any]:
        """Perform health check.

        Returns:
            Health check results
        """
        # Stub implementation
        return {
            "status": "healthy",
            "metrics_count": len(self.metrics),
            "alerts_count": len(self.alerts),
        }
