fix(opportunities): distinguish missing verification and improve metadata

resources/js/lib/opportunity-information.ts

@@ -0,0 +1,41 @@
+export function opportunityDescription(record: {
+    title: string;
+    summary?: string | null;
+}): string {
+    const summary = record.summary
+        ?.replace(/<[^>]*>/g, ' ')
+        .replace(/\s+/g, ' ')
+        .trim();
+    const text =
+        summary || `Consulte a ficha de ${record.title} no InvesteMoz.`;
+    return Array.from(
+        text
+            .replace(/<[^>]*>/g, ' ')
+            .replace(/\s+/g, ' ')
+            .trim(),
+    )
+        .slice(0, 160)
+        .join('');
+}
+
+export function recordedVerificationDate(value?: string | null): string {
+    if (!value?.trim()) return 'Não registada';
+    const parts = /^(\d{4})-(\d{2})-(\d{2})/.exec(value);
+    if (!parts) return 'Data não interpretável';
+    const [, year, month, day] = parts.map(Number);
+    const calendar = new Date(Date.UTC(year, month - 1, day));
+    if (
+        calendar.getUTCFullYear() !== year ||
+        calendar.getUTCMonth() !== month - 1 ||
+        calendar.getUTCDate() !== day
+    )
+        return 'Data não interpretável';
+    if (value.length > 10 && !/(Z|[+-]\d{2}:\d{2})$/.test(value))
+        return 'Fuso horário não registado';
+    const date = new Date(value);
+    if (Number.isNaN(date.getTime())) return 'Data não interpretável';
+    return new Intl.DateTimeFormat('pt-MZ', {
+        dateStyle: 'medium',
+        timeZone: 'Africa/Maputo',
+    }).format(date);
+}

resources/js/pages/investment/detail.tsx

@@ -9,7 +9,11 @@ import {
 } from '@/lib/search-territory';
 import type { EducationalArticle } from '@/components/educational-article-card';
 import { ClassificationSummary } from '@/components/opportunity-classification';
-import { Link, router, usePage } from '@inertiajs/react';
+import { Head, Link, router, usePage } from '@inertiajs/react';
+import {
+    opportunityDescription,
+    recordedVerificationDate,
+} from '@/lib/opportunity-information';
 import { useState } from 'react';
 import { downloadPublicOpportunityOffline } from '@/lib/public-opportunity-offline';
 import InvestmentMapPanel from '@/components/investment-map-panel';
@@ -46,6 +50,23 @@ export default function Detail({
     const [offlineMessage, setOfflineMessage] = useState('');
     return (
         <Frame title={r.title}>
+            <Head>
+                <meta
+                    head-key="description"
+                    name="description"
+                    content={opportunityDescription(r)}
+                />
+                <meta
+                    head-key="og:title"
+                    property="og:title"
+                    content={r.title}
+                />
+                <meta
+                    head-key="og:description"
+                    property="og:description"
+                    content={opportunityDescription(r)}
+                />
+            </Head>
             {r.maturity_label === 'Em preparação' && (
                 <p className="rounded border border-amber-700 bg-amber-50 p-4">
                     <strong>Em preparação.</strong> Consulte a oportunidade e
@@ -273,6 +294,10 @@ export default function Detail({
                 <dl className={card + ' space-y-4'}>
                     {[
                         ['Promotor', r.promoter_name],
+                        [
+                            'Última verificação registada',
+                            recordedVerificationDate(r.last_validated_at),
+                        ],
                         ['Investimento', money(r)],
                         ['Maturidade', r.maturity_label],
                         [

tests/frontend/opportunity-information.test.mjs

@@ -0,0 +1,23 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import {
+    opportunityDescription,
+    recordedVerificationDate,
+} from '../../resources/js/lib/opportunity-information.ts';
+
+test('metadata uses the actual summary, normalises markup and never invents investment terms', () => {
+    assert.equal(opportunityDescription({ title: 'Projecto', summary: '<b>Resumo</b>\n declarado' }), 'Resumo declarado');
+    const fallback = opportunityDescription({ title: 'Avicultura', summary: null });
+    assert.match(fallback, /Avicultura/);
+    assert.match(opportunityDescription({ title: 'Projecto', summary: '<b> </b>' }), /Projecto/);
+    assert.doesNotMatch(fallback, /A negociar|USD|aprovad|benefício/i);
+    assert.equal(Array.from(opportunityDescription({ title: 'Projecto', summary: 'a'.repeat(300) })).length, 160);
+});
+
+test('unknown and invalid verification dates remain distinct from a recorded verification', () => {
+    assert.equal(recordedVerificationDate(null), 'Não registada');
+    assert.equal(recordedVerificationDate('invalid'), 'Data não interpretável');
+    assert.equal(recordedVerificationDate('2026-02-30T12:00:00Z'), 'Data não interpretável');
+    assert.equal(recordedVerificationDate('2026-11-10 12:00:00'), 'Fuso horário não registado');
+    assert.match(recordedVerificationDate('2026-11-10T12:00:00Z'), /2026/);
+});