Improve application responsiveness and background processing

src/routes/api/campaigns/+server.ts

@@ -1,9 +1,22 @@
 import { json } from '@sveltejs/kit';
+import { serverTitle } from '$lib/ui/server-labels.js';
 import { db } from '$lib/server/db/index.js';
 
 export async function GET({ url }: { url: URL }) {
     const activeOnly = url.searchParams.get('active') === 'true';
+    const historyOnly = url.searchParams.get('view') === 'history';
     const server = url.searchParams.get('server');
+    const query = (url.searchParams.get('q') ?? '').slice(0, 100).toLowerCase();
+    const limit = Math.min(500, Math.max(1, Math.floor(Number(url.searchParams.get('limit')) || 25)));
+    const offset = Math.min(1_000_000, Math.max(0, Math.floor(Number(url.searchParams.get('offset')) || 0)));
+    const active = `EXISTS (SELECT 1 FROM deployment_servers a WHERE a.deployment_id=d.id AND a.server_deleted_at IS NULL AND a.restart_state IN ('pending','failed'))`;
+    const names = query ? (db().prepare('SELECT DISTINCT server FROM deployment_servers').all() as { server: string }[])
+        .map(row => row.server).filter(name => `${name} ${serverTitle(name)}`.toLowerCase().includes(query)) : [];
+    const where = `(? IS NULL OR EXISTS (SELECT 1 FROM deployment_servers target WHERE target.deployment_id=d.id AND target.server=?))
+        ${activeOnly ? `AND ${active}` : historyOnly ? `AND NOT ${active}` : ''}
+        ${query ? `AND EXISTS (SELECT 1 FROM deployment_servers target WHERE target.deployment_id=d.id AND target.server IN (${names.map(() => '?').join(',') || 'NULL'}))` : ''}`;
+    const parameters = [server, server, ...names];
+    const { total } = db().prepare(`SELECT COUNT(*) AS total FROM deployments d WHERE ${where}`).get(...parameters) as { total: number };
 
     const deployments = db()
         .prepare(
@@ -15,11 +28,11 @@ export async function GET({ url }: { url: URL }) {
              LEFT JOIN scripts s ON s.id = d.script_id
              LEFT JOIN script_versions sv ON sv.id = d.script_version_id
              LEFT JOIN script_versions pv ON pv.id = d.prior_version_id
-             WHERE (? IS NULL OR EXISTS (SELECT 1 FROM deployment_servers target WHERE target.deployment_id = d.id AND target.server = ?))
-             ORDER BY d.started_at DESC
-             LIMIT 500`
+             WHERE ${where}
+             ORDER BY d.started_at DESC, d.rowid DESC
+             LIMIT ? OFFSET ?`
         )
-        .all(server, server) as Array<{
+        .all(...parameters, limit, offset) as Array<{
         id: string;
         action: string;
         started_at: string;
@@ -36,7 +49,7 @@ export async function GET({ url }: { url: URL }) {
     }>;
 
     const ids = deployments.map(deployment => deployment.id);
-    if (!ids.length) return json({ deployments: [] });
+    if (!ids.length) return json({ deployments: [], total, limit, offset });
     const placeholders = ids.map(() => '?').join(',');
     const serversByDep = db()
         .prepare(
@@ -95,5 +108,5 @@ export async function GET({ url }: { url: URL }) {
         }))
         .filter((d) => (activeOnly ? d.servers.some((s) => !s.server_deleted_at && (s.restart_state === 'pending' || s.restart_state === 'failed')) : true));
 
-    return json({ deployments: rows });
+    return json({ deployments: rows, total, limit, offset });
 }