//! offline 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 {
    /// All monitored targets are unreachable, likely a network issue with PoM itself.
    #[instrument(skip_all)]
    pub async fn send_monitoring_offline_alert(&self, target_count: usize) {
        let alert_key = "monitoring:self";
        let subject = format!("[PoM] all {target_count} targets unreachable");
        let body = format!(
            "All {target_count} monitored targets are non-operational.\n\
             This likely indicates a network issue with the PoM instance itself,\n\
             not an actual outage of all targets.\n\n\
             Instance: {}\n\
             Time: {}\n\n\
             - PoM",
            self.instance_name,
            chrono::Utc::now().to_rfc3339(),
        );

        self.fire_failure(
            &subject,
            &body,
            "critical",
            "pom-monitoring",
            Some("self"),
            AlertMeta {
                key: alert_key,
                category: AlertCategory::MonitoringOffline,
                from: None,
                to: None,
                error: None,
            },
        )
        .await;
    }

    /// At least one target is reachable again after a monitoring-offline event.
    #[instrument(skip_all)]
    pub async fn send_monitoring_recovery(&self) {
        let alert_key = "monitoring:self";
        let subject = "[PoM] monitoring recovered".to_string();
        let body = format!(
            "At least one target is reachable again.\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::MonitoringRecovery,
                from: None,
                to: None,
                error: None,
            },
        )
        .await;
    }
}