//! Alert Management for Anomaly Detection
//!
//! Handles alerting and notifications for detected anomalies.

use super::{AnomalyResult, AnomalySeverity};
use crate::error::{ControlCenterError, Result};

/// Alert manager for anomaly notifications
pub struct AlertManager {
    alert_channels: Vec<String>,
}

impl AlertManager {
    /// Create new alert manager
    pub fn new(alert_channels: &[String]) -> Self {
        Self {
            alert_channels: alert_channels.to_vec(),
        }
    }

    /// Send alert for detected anomaly
    pub async fn send_alert(&self, anomaly: &AnomalyResult) -> Result<()> {
        let alert_message = self.format_alert_message(anomaly);

        for channel in &self.alert_channels {
            match channel.as_str() {
                "email" => self.send_email_alert(&alert_message).await?,
                "slack" => self.send_slack_alert(&alert_message).await?,
                "webhook" => self.send_webhook_alert(&alert_message).await?,
                _ => {
                    tracing::warn!("Unknown alert channel: {}", channel);
                }
            }
        }

        Ok(())
    }

    /// Format alert message
    fn format_alert_message(&self, anomaly: &AnomalyResult) -> String {
        format!(
            "🚨 ANOMALY DETECTED 🚨\n\nType: {:?}\nSeverity: {:?}\nConfidence: \
             {:.2}%\nDescription: {}\nDetected at: {}\nAffected entities: {}\n\nRecommended \
             actions:\n{}\n",
            anomaly.anomaly_type,
            anomaly.severity,
            anomaly.confidence * 100.0,
            anomaly.description,
            anomaly.detected_at.format("%Y-%m-%d %H:%M:%S UTC"),
            anomaly.affected_entities.join(", "),
            anomaly
                .recommended_actions
                .iter()
                .map(|action| format!("• {}", action))
                .collect::<Vec<_>>()
                .join("\n")
        )
    }

    /// Send email alert (stub implementation)
    async fn send_email_alert(&self, message: &str) -> Result<()> {
        tracing::info!("Would send email alert: {}", message);
        // In a real implementation, this would integrate with an email service
        Ok(())
    }

    /// Send Slack alert (stub implementation)
    async fn send_slack_alert(&self, message: &str) -> Result<()> {
        tracing::info!("Would send Slack alert: {}", message);
        // In a real implementation, this would integrate with Slack API
        Ok(())
    }

    /// Send webhook alert (stub implementation)
    async fn send_webhook_alert(&self, message: &str) -> Result<()> {
        tracing::info!("Would send webhook alert: {}", message);
        // In a real implementation, this would POST to a webhook URL
        Ok(())
    }
}
