//! latency alert/recovery messages. Domain half of the Alerter split;
//! shared dispatch/cooldown plumbing lives in the parent module.

use tracing::instrument;

use super::{AlertCategory, AlertMeta, Alerter};

impl Alerter {
    #[instrument(skip_all)]
    pub async fn send_latency_drift_alert(&self, target: &str, label: &str, drift_message: &str) {
        let alert_key = format!("latency:{target}");
        let subject = format!("[PoM] {target}: latency drift detected");
        let body = format!(
            "Target: {label} ({target})\n\
             {drift_message}\n\
             Instance: {}\n\
             Time: {}\n\n\
             - PoM",
            self.instance_name,
            chrono::Utc::now().to_rfc3339(),
        );

        self.fire_failure(
            &subject,
            &body,
            "medium",
            "pom-latency",
            Some(target),
            AlertMeta {
                key: &alert_key,
                category: AlertCategory::LatencyDrift,
                from: None,
                to: None,
                error: Some(drift_message),
            },
        )
        .await;
    }

    #[instrument(skip_all)]
    pub async fn send_latency_recovery(&self, target: &str, label: &str) {
        let alert_key = format!("latency:{target}");
        let subject = format!("[PoM] {target}: latency recovered");
        let body = format!(
            "Target: {label} ({target})\n\
             Latency returned to normal.\n\
             Instance: {}\n\
             Time: {}\n\n\
             - PoM",
            self.instance_name,
            chrono::Utc::now().to_rfc3339(),
        );

        self.fire_recovery(
            &subject,
            &body,
            AlertMeta {
                key: &alert_key,
                category: AlertCategory::LatencyRecovery,
                from: None,
                to: None,
                error: None,
            },
        )
        .await;
    }
}