Initial web

web/app/api/alerts/check/route.ts

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+import { NextResponse } from 'next/server';
+import pool from '@/lib/db';
+import { withAuth } from '@/lib/apiHelpers';
+import { getServerLocaleMap } from '@/lib/localeServer';
+import { resolveName } from '@/lib/localization';
+import type { AlertConfig, TriggeredAlert } from '@/lib/types';
+
+export const GET = withAuth(async () => {
+  const alertsResult = await pool.query<AlertConfig>(
+    `SELECT id, item_key, item_key_is_regex, combinator, signal_type, condition, threshold
+     FROM alerts WHERE active = true`,
+  );
+  if (alertsResult.rows.length === 0) return NextResponse.json([]);
+
+  const latestResult = await pool.query<{
+    combinator: string; item_key: string; green: number; red: number;
+  }>(
+    `SELECT DISTINCT ON (combinator, item_key) combinator, item_key, green, red
+     FROM signals
+     ORDER BY combinator, item_key, real_time DESC`,
+  );
+
+  const localeMap = getServerLocaleMap();
+
+  const latestMap = new Map(
+    latestResult.rows.map(r => [`${r.combinator}::${r.item_key}`, r]),
+  );
+
+  const triggered: TriggeredAlert[] = [];
+
+  for (const alert of alertsResult.rows) {
+    for (const [key, vals] of latestMap) {
+      const [combinator, item_key] = key.split('::');
+
+      let itemMatch: boolean;
+      if (alert.item_key_is_regex) {
+        try {
+          const re = new RegExp(alert.item_key, 'i');
+          // Test against raw key and localized name
+          itemMatch = re.test(item_key) || re.test(resolveName(item_key, localeMap));
+        } catch {
+          itemMatch = false;
+        }
+      } else {
+        itemMatch = item_key === alert.item_key;
+      }
+
+      if (!itemMatch || (alert.combinator && combinator !== alert.combinator)) continue;
+
+      const value = alert.signal_type === 'green' ? vals.green : vals.red;
+      const fired = alert.condition === 'above' ? value > alert.threshold : value < alert.threshold;
+      if (fired) triggered.push({
+        ...alert,
+        current_value:    value,
+        combinator_match: combinator,
+        matched_item_key: item_key,
+      });
+    }
+  }
+
+  return NextResponse.json(triggered);
+});