Fix CE not processing alert status

Fixes #2968

server/lib/alerts/events/siteEvents.ts

@@ -1,21 +1,156 @@
-// stub
+import logger from "@server/logger";
+import { processAlerts } from "@server/lib/alerts";
+import {
+    db,
+    logsDb,
+    statusHistory,
+    targetHealthCheck,
+    Transaction
+} from "@server/db";
+import { invalidateStatusHistoryCache } from "@server/lib/statusHistory";
+import { and, eq, inArray } from "drizzle-orm";
+import { fireHealthCheckUnhealthyAlert } from "./healthCheckEvents";
 
+// ---------------------------------------------------------------------------
+// Public API
+// ---------------------------------------------------------------------------
+
+/**
+ * Fire a `site_online` alert for the given site.
+ *
+ * Call this after the site has been confirmed reachable / connected so that
+ * any matching `alertRules` can dispatch their email and webhook actions.
+ *
+ * @param orgId    - Organisation that owns the site.
+ * @param siteId   - Numeric primary key of the site.
+ * @param siteName - Human-readable name shown in notifications (optional).
+ * @param extra    - Any additional key/value pairs to include in the payload.
+ */
 export async function fireSiteOnlineAlert(
     orgId: string,
     siteId: number,
     siteName?: string,
     extra?: Record<string, unknown>,
-    trx?: unknown
+    trx: Transaction | typeof db = db
 ): Promise<void> {
-    return;
+    try {
+        await logsDb.insert(statusHistory).values({
+            entityType: "site",
+            entityId: siteId,
+            orgId: orgId,
+            status: "online",
+            timestamp: Math.floor(Date.now() / 1000)
+        });
+        await invalidateStatusHistoryCache("site", siteId);
+
+        await processAlerts({
+            eventType: "site_online",
+            orgId,
+            siteId,
+            data: {
+                ...(siteName != null ? { siteName } : {}),
+                ...extra
+            }
+        });
+        await processAlerts({
+            eventType: "site_toggle",
+            orgId,
+            siteId,
+            data: {
+                siteId,
+                status: "online",
+                ...(siteName != null ? { siteName } : {}),
+                ...extra
+            }
+        });
+    } catch (err) {
+        logger.error(
+            `fireSiteOnlineAlert: unexpected error for siteId ${siteId}`,
+            err
+        );
+    }
 }
 
+/**
+ * Fire a `site_offline` alert for the given site.
+ *
+ * Call this after the site has been detected as unreachable / disconnected so
+ * that any matching `alertRules` can dispatch their email and webhook actions.
+ *
+ * @param orgId    - Organisation that owns the site.
+ * @param siteId   - Numeric primary key of the site.
+ * @param siteName - Human-readable name shown in notifications (optional).
+ * @param extra    - Any additional key/value pairs to include in the payload.
+ */
 export async function fireSiteOfflineAlert(
     orgId: string,
     siteId: number,
     siteName?: string,
     extra?: Record<string, unknown>,
-    trx?: unknown
+    trx: Transaction | typeof db = db
 ): Promise<void> {
-    return;
-}
+    try {
+        await logsDb.insert(statusHistory).values({
+            entityType: "site",
+            entityId: siteId,
+            orgId: orgId,
+            status: "offline",
+            timestamp: Math.floor(Date.now() / 1000)
+        });
+        await invalidateStatusHistoryCache("site", siteId);
+
+        const unhealthyHealthChecks = await trx
+            .update(targetHealthCheck)
+            .set({ hcHealth: "unhealthy" })
+            .where(
+                and(
+                    eq(targetHealthCheck.orgId, orgId),
+                    eq(targetHealthCheck.siteId, siteId),
+                    eq(targetHealthCheck.hcEnabled, true) // only effect the ones that are enabled
+                )
+            )
+            .returning();
+
+        for (const healthCheck of unhealthyHealthChecks) {
+            logger.info(
+                `Marking health check ${healthCheck.targetHealthCheckId} unhealthy due to site ${siteId} being marked offline`
+            );
+
+            await fireHealthCheckUnhealthyAlert(
+                healthCheck.orgId,
+                healthCheck.targetHealthCheckId,
+                healthCheck.name,
+                healthCheck.targetId, // for the resource if we have one
+                undefined,
+                true,
+                trx
+            );
+        }
+
+        await processAlerts({
+            eventType: "site_offline",
+            orgId,
+            siteId,
+            data: {
+                ...(siteName != null ? { siteName } : {}),
+                ...extra
+            }
+        });
+        await processAlerts({
+            eventType: "site_toggle",
+            orgId,
+            siteId,
+            data: {
+                siteId,
+                status: "offline",
+                ...(siteName != null ? { siteName } : {}),
+                ...extra
+            }
+        });
+    } catch (err) {
+        logger.error(
+            `fireSiteOfflineAlert: unexpected error for siteId ${siteId}`,
+            err
+        );
+    }
+}