Paginate beta history and refresh pages from events

src/lib/server/fleet/beta-pages.ts

@@ -0,0 +1,40 @@
+import { db } from '../db/index.js';
+import type { BetaRow } from './beta.js';
+
+const positive = (value: string | null, fallback: number) => {
+    const number = Number(value);
+    return Number.isSafeInteger(number) && number > 0 ? number : fallback;
+};
+
+export function betaListPage(params: URLSearchParams) {
+    const state = params.get('state'), view = params.get('view'), search = (params.get('q') ?? '').slice(0, 200);
+    const predicates: string[] = [], args: (string | number)[] = [];
+    if (state) { predicates.push('b.state=?'); args.push(state); }
+    else if (view === 'active') predicates.push("b.state IN ('running','ready-promote')");
+    else if (view === 'history') predicates.push("b.state IN ('promoted','rolled-back')");
+    if (search) {
+        predicates.push(`(instr(lower('#'||b.id||' '||COALESCE(b.notes,'')),lower(?))>0 OR EXISTS (
+            SELECT 1 FROM beta_scripts bs JOIN scripts s ON s.id=bs.script_id WHERE bs.beta_id=b.id AND instr(lower(s.name),lower(?))>0))`);
+        args.push(search, search);
+    }
+    const where = predicates.length ? ' WHERE ' + predicates.join(' AND ') : '';
+    const total = (db().prepare('SELECT COUNT(*) n FROM betas b' + where).get(...args) as { n: number }).n;
+    const pageSize = Math.min(100, positive(params.get('limit'), 25));
+    const totalPages = Math.max(1, Math.ceil(total / pageSize));
+    const page = Math.min(totalPages, positive(params.get('page'), 1));
+    const betas = db().prepare('SELECT b.* FROM betas b' + where + ' ORDER BY b.id DESC LIMIT ? OFFSET ?')
+        .all(...args, pageSize, (page - 1) * pageSize) as BetaRow[];
+    const counts = db().prepare(`SELECT COUNT(CASE WHEN state IN ('running','ready-promote') THEN 1 END) active,
+        COUNT(CASE WHEN state IN ('promoted','rolled-back') THEN 1 END) history FROM betas`).get() as { active: number; history: number };
+    return { betas, page, pageSize, total, totalPages, counts };
+}
+
+export function betaActivityPage(id: number, params = new URLSearchParams()) {
+    const before = positive(params.get('before'), Number.MAX_SAFE_INTEGER);
+    const limit = Math.min(100, positive(params.get('limit'), 50));
+    const rows = db().prepare('SELECT id,created_at,message FROM beta_events WHERE beta_id=? AND id<? ORDER BY id DESC LIMIT ?')
+        .all(id, before, limit + 1) as { id: number; created_at: string; message: string }[];
+    const more = rows.length > limit;
+    const events = rows.slice(0, limit).reverse();
+    return { events, nextBefore: more ? events[0].id : null };
+}