//! route 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_route_failure_alert(
        &self,
        target: &str,
        label: &str,
        failed_paths: &[String],
    ) {
        let alert_key = format!("route:{target}");
        let n = failed_paths.len();
        let subject = format!("[PoM] {label}: {n} route(s) failing");
        let body = format!(
            "Target: {label} ({target})\n\
             Failed routes:\n{}\n\
             Instance: {}\n\
             Time: {}\n\n\
             - PoM",
            failed_paths
                .iter()
                .map(|p| format!("  - {p}"))
                .collect::<Vec<_>>()
                .join("\n"),
            self.instance_name,
            chrono::Utc::now().to_rfc3339(),
        );

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

    #[instrument(skip_all)]
    pub async fn send_route_recovery_alert(
        &self,
        target: &str,
        label: &str,
        recovered_paths: &[String],
    ) {
        let alert_key = format!("route:{target}");
        let subject = format!("[PoM] {label}: routes recovered");
        let body = format!(
            "Target: {label} ({target})\n\
             Recovered routes:\n{}\n\
             Instance: {}\n\
             Time: {}\n\n\
             - PoM",
            recovered_paths
                .iter()
                .map(|p| format!("  - {p}"))
                .collect::<Vec<_>>()
                .join("\n"),
            self.instance_name,
            chrono::Utc::now().to_rfc3339(),
        );

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