feat(web): RSS фийдове с най-новите договори на профилите (институции и компании)

README.md

@@ -40,7 +40,7 @@
 | Потоци               | `/flows`             | Парични потоци възложител → компания (суми + брой)                   |
 | Търсене              | `/search`            | По имена, предмет и идентификатори                                   |
 
-Списъците имат CSV експорт (`/contracts.csv`, `/companies.csv`, `/authorities.csv`), всеки договор — JSON изглед (`/contracts/[id].json`). Има и страници за методология, достъпност, поверителност и impressum, плюс `robots.txt` и sitemap файлове.
+Списъците имат CSV експорт (`/contracts.csv`, `/companies.csv`, `/authorities.csv`), всеки договор — JSON изглед (`/contracts/[id].json`), а профилите на институции и компании — RSS фийд с най-новите им договори (`.rss`). Има и страници за методология, достъпност, поверителност и impressum, плюс `robots.txt` и sitemap файлове.
 
 ## Накъде върви
 

apps/web/app/lib/feed.test.ts

@@ -0,0 +1,157 @@
+import { describe, expect, it } from 'vitest';
+import type { ContractListItem } from '@sigma/api-contract';
+import { contractRssItem, rssDate, rssFeed, xmlEscape } from './feed';
+
+function item(overrides: Partial<ContractListItem> = {}): ContractListItem {
+  return {
+    id: 'e:UNP-1:2:eik:111111111',
+    subject: 'Доставка на техника',
+    unp: 'UNP-1',
+    sectorCode: '30',
+    euFunded: false,
+    isConsortium: false,
+    authoritySlug: '123456789',
+    authorityName: 'Община Пример',
+    bidderSlug: '111111111',
+    bidderName: 'Фирма ЕООД',
+    bidderDisplayName: 'Фирма ЕООД',
+    bidderKind: 'company',
+    procedureLabel: 'Открита процедура',
+    signedAt: '2026-05-15',
+    publishedAt: null,
+    bidsReceived: 3,
+    valueEur: 12345.67,
+    ...overrides,
+  };
+}
+
+describe('xmlEscape', () => {
+  it('escapes the five XML special characters', () => {
+    expect(xmlEscape(`<a & "b" & 'c'>`)).toBe('&lt;a &amp; &quot;b&quot; &amp; &apos;c&apos;&gt;');
+  });
+  it('passes ordinary Bulgarian text through unchanged', () => {
+    expect(xmlEscape('Община „Пример“ - договори')).toBe('Община „Пример“ - договори');
+  });
+  it('drops XML-1.0-invalid control characters but keeps tab / newline / CR', () => {
+    const c = (n: number) => String.fromCharCode(n);
+    // U+0000, U+0008, U+001F are illegal in XML 1.0 → stripped; the surrounding text survives.
+    expect(xmlEscape(`a${c(0)}b${c(8)}c${c(0x1f)}d`)).toBe('abcd');
+    // TAB (U+0009), LF (U+000A), CR (U+000D) are legal → preserved verbatim.
+    expect(xmlEscape(`x${c(9)}y${c(10)}z${c(13)}w`)).toBe(`x${c(9)}y${c(10)}z${c(13)}w`);
+  });
+});
+
+describe('rssDate', () => {
+  it('renders an ISO day as RFC 822', () => {
+    expect(rssDate('2026-05-15')).toBe('Fri, 15 May 2026 00:00:00 GMT');
+  });
+  it('returns null for null, malformed, and impossible dates', () => {
+    expect(rssDate(null)).toBeNull();
+    expect(rssDate('')).toBeNull();
+    expect(rssDate('15.05.2026')).toBeNull();
+    expect(rssDate('2026-13-45')).toBeNull();
+  });
+});
+
+describe('contractRssItem', () => {
+  it('builds an authority-feed item around the winning bidder', () => {
+    const rss = contractRssItem(item(), 'bidder', 'https://sigma.midt.bg');
+    expect(rss.title).toBe('Доставка на техника - Фирма ЕООД');
+    expect(rss.link).toBe('https://sigma.midt.bg/contracts/e:UNP-1:2:eik:111111111');
+    expect(rss.description).toContain('Изпълнител: Фирма ЕООД');
+    expect(rss.description).toContain('Подписан: 15.05.2026');
+    expect(rss.description).toContain('Процедура: Открита процедура');
+    expect(rss.pubDate).toBe('Fri, 15 May 2026 00:00:00 GMT');
+  });
+
+  it('builds a company-feed item around the buying authority', () => {
+    const rss = contractRssItem(item(), 'authority', 'https://sigma.midt.bg');
+    expect(rss.title).toBe('Доставка на техника - Община Пример');
+    expect(rss.description).toContain('Възложител: Община Пример');
+  });
+
+  it('handles missing value and missing signing date', () => {
+    const rss = contractRssItem(item({ valueEur: null, signedAt: null }), 'bidder', 'https://x.bg');
+    expect(rss.description).toContain('Стойност: без обявена стойност');
+    expect(rss.description).not.toContain('Подписан:');
+    expect(rss.pubDate).toBeNull();
+  });
+
+  it('falls back to publishedAt for pubDate when there is no signing date', () => {
+    // Mirrors the query's ORDER BY COALESCE(signed_at, published_at): an item ordered by publish date
+    // must still carry a <pubDate> so readers can sort it. The description omits „Подписан:" (no signing).
+    const rss = contractRssItem(
+      item({ signedAt: null, publishedAt: '2026-05-10' }),
+      'bidder',
+      'https://x.bg',
+    );
+    expect(rss.pubDate).toBe('Sun, 10 May 2026 00:00:00 GMT');
+    expect(rss.description).not.toContain('Подписан:');
+  });
+});
+
+describe('rssFeed', () => {
+  const opts = {
+    title: 'Община <Пример> - нови договори',
+    description: 'Най-новите договори & анекси',
+    siteLink: 'https://sigma.midt.bg/authorities/123456789',
+    selfLink: 'https://sigma.midt.bg/authorities/123456789.rss',
+    items: [
+      contractRssItem(
+        item({ subject: 'А/Б "проект" <спешен>' }),
+        'bidder',
+        'https://sigma.midt.bg',
+      ),
+      contractRssItem(item({ signedAt: null, valueEur: null }), 'bidder', 'https://sigma.midt.bg'),
+    ],
+  };
+
+  it('escapes user-controlled text everywhere it lands', () => {
+    const xml = rssFeed(opts);
+    expect(xml).toContain('<title>Община &lt;Пример&gt; - нови договори</title>');
+    expect(xml).toContain('Най-новите договори &amp; анекси');
+    expect(xml).toContain('А/Б &quot;проект&quot; &lt;спешен&gt;');
+    expect(xml).not.toMatch(/<спешен>/);
+  });
+
+  it('links the feed to itself and to the profile', () => {
+    const xml = rssFeed(opts);
+    expect(xml).toContain(
+      '<atom:link href="https://sigma.midt.bg/authorities/123456789.rss" rel="self" type="application/rss+xml"/>',
+    );
+    expect(xml).toContain('<link>https://sigma.midt.bg/authorities/123456789</link>');
+  });
+
+  it('uses the contract URL as a permalink guid and skips pubDate for undated items', () => {
+    const xml = rssFeed(opts);
+    expect(xml).toContain(
+      '<guid isPermaLink="true">https://sigma.midt.bg/contracts/e:UNP-1:2:eik:111111111</guid>',
+    );
+    expect(xml.match(/<pubDate>/g)).toHaveLength(2); // channel + the one dated item
+  });
+
+  it('stays deterministic: channel pubDate is the newest item date, no wall clock', () => {
+    const xml = rssFeed(opts);
+    expect(xml).toContain('<pubDate>Fri, 15 May 2026 00:00:00 GMT</pubDate>');
+    expect(rssFeed(opts)).toBe(xml);
+  });
+
+  it('renders a valid empty channel when the entity has no contracts', () => {
+    const xml = rssFeed({ ...opts, items: [] });
+    expect(xml).toContain('<channel>');
+    expect(xml).not.toContain('<item>');
+    expect(xml).not.toContain('<pubDate>');
+  });
+
+  it('channel pubDate is the MAX item date, not the first — even if items are mis-ordered', () => {
+    // rssFeed cannot enforce the caller's newest-first order, so it computes the max defensively.
+    const older = contractRssItem(item({ signedAt: '2026-01-10' }), 'bidder', 'https://x.bg');
+    const newer = contractRssItem(item({ signedAt: '2026-08-20' }), 'bidder', 'https://x.bg');
+    // Newest is SECOND in the array → a `find`-first would wrongly pick the older one. Anchor on the
+    // channel's <language> line (only the channel pubDate follows it) to target the channel, not items.
+    const xml = rssFeed({ ...opts, items: [older, newer] });
+    expect(xml).toContain(
+      '<language>bg</language>\n    <pubDate>Thu, 20 Aug 2026 00:00:00 GMT</pubDate>',
+    );
+  });
+});

apps/web/app/lib/feed.ts

@@ -0,0 +1,121 @@
+import type { ContractListItem } from '@sigma/api-contract';
+import { date, money } from '@sigma/shared';
+
+// RSS 2.0 for the entity profile feeds ("следи тази институция/фирма" without an account).
+// Hand-rolled on purpose: the format is tiny, the itemset is capped at one page, and every value
+// passes through xmlEscape - a templating dependency would be more surface than the format itself.
+
+const XML_ESCAPES: Record<string, string> = {
+  '&': '&amp;',
+  '<': '&lt;',
+  '>': '&gt;',
+  '"': '&quot;',
+  "'": '&apos;',
+};
+
+// Control characters that are NOT legal in XML 1.0 even when entity-escaped: everything below U+0020
+// except TAB (U+0009), LF (U+000A) and CR (U+000D). A stray one in a source subject/name would make
+// the whole feed invalid XML and strict readers reject it, so drop them before escaping (review
+// ydimitrof). There is no meaningful replacement — they carry no display value.
+const XML_INVALID_CONTROL = /[\u0000-\u0008\u000B\u000C\u000E-\u001F]/g;
+
+export function xmlEscape(value: string): string {
+  return value.replace(XML_INVALID_CONTROL, '').replace(/[&<>"']/g, (ch) => XML_ESCAPES[ch] ?? ch);
+}
+
+/** 'YYYY-MM-DD' -> RFC 822 (RSS pubDate); null for absent or malformed dates. */
+export function rssDate(day: string | null): string | null {
+  if (!day || !/^\d{4}-\d{2}-\d{2}$/.test(day)) return null;
+  const t = Date.parse(`${day}T00:00:00Z`);
+  return Number.isNaN(t) ? null : new Date(t).toUTCString();
+}
+
+export interface RssItem {
+  title: string;
+  /** Absolute URL; doubles as the permalink <guid>. */
+  link: string;
+  description: string;
+  pubDate: string | null;
+}
+
+/**
+ * One feed item per contract. `counterparty` picks the side the feed's reader does NOT follow:
+ * an authority feed lists winners ('bidder'), a company feed lists buyers ('authority').
+ */
+export function contractRssItem(
+  item: ContractListItem,
+  counterparty: 'bidder' | 'authority',
+  origin: string,
+): RssItem {
+  const other = counterparty === 'bidder' ? item.bidderDisplayName : item.authorityName;
+  const value = item.valueEur != null ? money(item.valueEur) : 'без обявена стойност';
+  const parts = [
+    `${counterparty === 'bidder' ? 'Изпълнител' : 'Възложител'}: ${other}`,
+    `Стойност: ${value}`,
+    item.signedAt ? `Подписан: ${date(item.signedAt)}` : null,
+    `Процедура: ${item.procedureLabel}`,
+  ].filter((p): p is string => p !== null);
+  return {
+    title: `${item.subject} - ${other}`,
+    link: `${origin}/contracts/${item.id}`,
+    description: parts.join(' · '),
+    // Fall back to publishedAt when there is no signing date, matching the query's
+    // `ORDER BY COALESCE(signed_at, published_at)`: an item positioned as "new" by publish date must
+    // carry a <pubDate> so readers can order it, and the channel pubDate stays the true newest (review
+    // ydimitrof). `??` (not `||`) is deliberate: it mirrors SQL COALESCE, which treats an empty string
+    // as PRESENT (only NULL falls through). Real data has NULL signed_at, so the two never disagree —
+    // and keeping the same rule here holds pubDate in sync with the row's ordering position.
+    pubDate: rssDate(item.signedAt ?? item.publishedAt),
+  };
+}
+
+export function rssFeed(opts: {
+  title: string;
+  description: string;
+  /** Absolute URL of the HTML profile the feed mirrors. */
+  siteLink: string;
+  /** Absolute URL of the feed itself (atom:link rel="self"). */
+  selfLink: string;
+  items: RssItem[];
+}): string {
+  const items = opts.items
+    .map((item) =>
+      [
+        '    <item>',
+        `      <title>${xmlEscape(item.title)}</title>`,
+        `      <link>${xmlEscape(item.link)}</link>`,
+        `      <guid isPermaLink="true">${xmlEscape(item.link)}</guid>`,
+        item.pubDate ? `      <pubDate>${xmlEscape(item.pubDate)}</pubDate>` : null,
+        `      <description>${xmlEscape(item.description)}</description>`,
+        '    </item>',
+      ]
+        .filter((line): line is string => line !== null)
+        .join('\n'),
+    )
+    .join('\n');
+  // Channel-level pubDate is the newest item's date, computed as the MAX over all items rather than
+  // trusting input order: rssFeed is generic and cannot enforce the caller's newest-first ordering, so
+  // a future reordering must not silently yield a wrong channel <pubDate> (review ydimitrof). Still a
+  // pure function of the data — no "now" timestamp anywhere (RFC-822 dates compare via Date.parse).
+  const newest = opts.items.reduce<string | undefined>((max, item) => {
+    if (!item.pubDate) return max;
+    return max === undefined || Date.parse(item.pubDate) > Date.parse(max) ? item.pubDate : max;
+  }, undefined);
+  return [
+    '<?xml version="1.0" encoding="UTF-8"?>',
+    '<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">',
+    '  <channel>',
+    `    <title>${xmlEscape(opts.title)}</title>`,
+    `    <link>${xmlEscape(opts.siteLink)}</link>`,
+    `    <description>${xmlEscape(opts.description)}</description>`,
+    '    <language>bg</language>',
+    newest ? `    <pubDate>${xmlEscape(newest)}</pubDate>` : null,
+    `    <atom:link href="${xmlEscape(opts.selfLink)}" rel="self" type="application/rss+xml"/>`,
+    items || null,
+    '  </channel>',
+    '</rss>',
+    '',
+  ]
+    .filter((line): line is string => line !== null)
+    .join('\n');
+}

apps/web/app/routes.ts

@@ -13,9 +13,11 @@ export default [
   route('analytics', 'routes/analytics.tsx'),
   route('companies', 'routes/companies.tsx'),
   route('companies.csv', 'routes/companies.csv.tsx'),
+  route('companies/:eik.rss', 'routes/company.rss.tsx'),
   route('companies/:eik', 'routes/company.tsx'),
   route('authorities', 'routes/authorities.tsx'),
   route('authorities.csv', 'routes/authorities.csv.tsx'),
+  route('authorities/:eik.rss', 'routes/authority.rss.tsx'),
   route('authorities/:eik', 'routes/authority.tsx'),
   route('contracts', 'routes/contracts.tsx'),
   route('contracts.csv', 'routes/contracts.csv.tsx'),