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* @module Infrastructure/SEO
* @category Intelligence Operations / Supporting Infrastructure
* @name Sitemap Generation - Multi-Language SEO Infrastructure
*
* @description
* Automated XML sitemap generation system producing search engine-optimized sitemaps
* for all 14 language variants of the Riksdagsmonitor political intelligence platform.
*
* @author Hack23 AB (Infrastructure Team)
* @license Apache-2.0
* @version 2.1.0
*/
import { execSync } from 'child_process';
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import type { Language } from './types/language.js';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
console.log('🗺️ Sitemap Generation Script');
// ---------------------------------------------------------------------------
// Configuration
// ---------------------------------------------------------------------------
const BASE_URL = 'https://riksdagsmonitor.com';
const NEWS_DIR = path.join(__dirname, '..', 'news');
const API_DIR = path.join(__dirname, '..', 'api');
const ROOT_DIR = path.join(__dirname, '..');
const SITEMAP_FILE = path.join(ROOT_DIR, 'sitemap.xml');
// Language codes
const LANGUAGES: readonly Language[] = ['en', 'sv', 'da', 'no', 'fi', 'de', 'fr', 'es', 'nl', 'ar', 'he', 'ja', 'ko', 'zh'];
// ---------------------------------------------------------------------------
// Types
// ---------------------------------------------------------------------------
interface ArticleGroup {
baseSlug: string;
languages: string[];
lastmod: string;
}
interface ApiDoc {
file: string;
path: string;
lastmod: string;
}
interface HreflangAlternate {
lang: string;
href: string;
}
// ---------------------------------------------------------------------------
// Functions
// ---------------------------------------------------------------------------
/**
* Cache of git commit timestamps keyed by relative file path.
* Populated once via loadGitTimestamps() to avoid per-file git calls.
*/
const gitTimestampCache = new Map<string, string>();
let gitTimestampsLoaded = false;
/**
* Preload git commit timestamps for all tracked files in a single git call.
* Parses `git log --name-only` output to map each file to its most recent commit timestamp.
*/
function loadGitTimestamps(): void {
if (gitTimestampsLoaded) return;
gitTimestampsLoaded = true;
try {
const output = execSync('git log --format="COMMIT %cI" --name-only --diff-filter=ACMR', {
cwd: ROOT_DIR,
encoding: 'utf8',
stdio: ['pipe', 'pipe', 'pipe'],
maxBuffer: 10 * 1024 * 1024,
});
let currentTimestamp = '';
for (const line of output.split('\n')) {
if (line.startsWith('COMMIT ')) {
currentTimestamp = new Date(line.substring(7)).toISOString();
} else if (line.trim() && currentTimestamp) {
// Only keep the first (most recent) timestamp per file
if (!gitTimestampCache.has(line)) {
gitTimestampCache.set(line, currentTimestamp);
}
}
}
} catch (_error: unknown) {
// git not available — getFileModTime will fall back to fs.statSync
console.warn('⚠️ Git timestamps unavailable — falling back to filesystem mtime');
}
}
/**
* Get file modification time from git history for deterministic timestamps.
* Falls back to filesystem mtime only when git history is unavailable.
*/
function getFileModTime(filePath: string): string {
loadGitTimestamps();
const relativePath = path.relative(ROOT_DIR, filePath).split(path.sep).join('/');
const cached = gitTimestampCache.get(relativePath);
if (cached) return cached;
try {
const stats = fs.statSync(filePath);
return stats.mtime.toISOString();
} catch (_error: unknown) {
return new Date().toISOString();
}
}
/**
* Get news articles with metadata.
*/
function getNewsArticles(): ArticleGroup[] {
console.log('📰 Scanning news directory...');
Iif (!fs.existsSync(NEWS_DIR)) {
console.warn('⚠️ News directory not found');
return [];
}
const files = fs
.readdirSync(NEWS_DIR)
.filter((file) => file.endsWith('.html') && file !== 'index.html' && !file.startsWith('index_'));
console.log(` Found ${files.length} news articles`);
// Group articles by base slug (without language suffix)
const articles = new Map<string, ArticleGroup>();
files.forEach((file) => {
const match = file.match(/^(.+?)-(en|sv|da|no|fi|de|fr|es|nl|ar|he|ja|ko|zh)\.html$/);
Eif (match) {
const baseSlug = match[1]!;
const lang = match[2]!;
const filePath = path.join(NEWS_DIR, file);
const fileModTime = getFileModTime(filePath);
if (!articles.has(baseSlug)) {
articles.set(baseSlug, {
baseSlug,
languages: [],
lastmod: fileModTime,
});
} else {
const article = articles.get(baseSlug)!;
Iif (!article.lastmod || new Date(fileModTime) > new Date(article.lastmod)) {
article.lastmod = fileModTime;
}
}
articles.get(baseSlug)!.languages.push(lang);
}
});
return Array.from(articles.values());
}
/**
* Get API documentation files (supports TypeDoc nested directory structure).
*/
function getApiDocs(): ApiDoc[] {
console.log('📚 Scanning API documentation directory...');
Iif (!fs.existsSync(API_DIR)) {
console.warn('⚠️ API directory not found');
return [];
}
const results: ApiDoc[] = [];
function scanDir(dir: string): void {
const entries = fs.readdirSync(dir, { withFileTypes: true });
for (const entry of entries) {
const fullPath = path.join(dir, entry.name);
if (entry.isDirectory() && entry.name !== 'assets') {
scanDir(fullPath);
} else if (entry.isFile() && entry.name.endsWith('.html')) {
const relativePath = path.relative(API_DIR, fullPath).replace(/\\/g, '/');
results.push({
file: relativePath,
path: fullPath,
lastmod: getFileModTime(fullPath),
});
}
}
}
scanDir(API_DIR);
console.log(` Found ${results.length} API documentation files`);
return results;
}
/**
* Generate XML for a URL entry.
*/
function generateUrlEntry(
loc: string,
lastmod: string,
changefreq: string,
priority: string,
alternates: HreflangAlternate[] = [],
): string {
let xml = `
<url>
<loc>${BASE_URL}/${loc}</loc>
<lastmod>${lastmod}</lastmod>
<changefreq>${changefreq}</changefreq>
<priority>${priority}</priority>`;
alternates.forEach((alt) => {
xml += `
<xhtml:link rel="alternate" hreflang="${alt.lang}" href="${BASE_URL}/${alt.href}"/>`;
});
xml += `
</url>`;
return xml;
}
/**
* Generate sitemap XML.
*/
function generateSitemap(): string {
console.log('🔨 Generating sitemap...');
let xml = `<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xmlns:xhtml="http://www.w3.org/1999/xhtml">`;
// Main index page with all language alternates
const indexAlternates: HreflangAlternate[] = LANGUAGES.map((lang) => ({
lang,
href: lang === 'en' ? 'index.html' : `index_${lang}.html`,
}));
const indexMtime = getFileModTime(path.join(ROOT_DIR, 'index.html'));
xml += generateUrlEntry('index.html', indexMtime, 'daily', '1.0', indexAlternates);
// Individual language index pages (excluding English)
LANGUAGES.filter((lang) => lang !== 'en').forEach((lang) => {
const loc = `index_${lang}.html`;
const lastmod = getFileModTime(path.join(ROOT_DIR, loc));
const priority = lang === 'sv' ? '0.9' : '0.7';
xml += generateUrlEntry(loc, lastmod, 'daily', priority);
});
// Politician dashboard page
const politicianDashboardMtime = getFileModTime(path.join(ROOT_DIR, 'politician-dashboard.html'));
xml += generateUrlEntry('politician-dashboard.html', politicianDashboardMtime, 'weekly', '0.8');
// Dashboard pages with all language alternates (only for existing files)
const dashboardAlternates: HreflangAlternate[] = LANGUAGES.map((lang) => ({
lang,
href: lang === 'en' ? 'dashboard/index.html' : `dashboard/index_${lang}.html`,
})).filter((alt) => fs.existsSync(path.join(ROOT_DIR, alt.href)));
const dashboardEnMtime = getFileModTime(path.join(ROOT_DIR, 'dashboard', 'index.html'));
xml += generateUrlEntry('dashboard/index.html', dashboardEnMtime, 'weekly', '0.8', dashboardAlternates);
// All other language dashboard pages
LANGUAGES.filter((lang) => lang !== 'en').forEach((lang) => {
const loc = `dashboard/index_${lang}.html`;
const dashboardPath = path.join(ROOT_DIR, 'dashboard', `index_${lang}.html`);
Eif (fs.existsSync(dashboardPath)) {
const lastmod = getFileModTime(dashboardPath);
const priority = lang === 'sv' ? '0.8' : '0.7';
xml += generateUrlEntry(loc, lastmod, 'weekly', priority);
}
});
// Sitemap HTML pages with language alternates
const sitemapAlternates: HreflangAlternate[] = [
{ lang: 'en', href: 'sitemap.html' },
{ lang: 'sv', href: 'sitemap_sv.html' },
{ lang: 'da', href: 'sitemap_da.html' },
{ lang: 'no', href: 'sitemap_no.html' },
{ lang: 'fi', href: 'sitemap_fi.html' },
{ lang: 'de', href: 'sitemap_de.html' },
{ lang: 'fr', href: 'sitemap_fr.html' },
{ lang: 'es', href: 'sitemap_es.html' },
{ lang: 'nl', href: 'sitemap_nl.html' },
{ lang: 'ar', href: 'sitemap_ar.html' },
{ lang: 'he', href: 'sitemap_he.html' },
{ lang: 'ja', href: 'sitemap_ja.html' },
{ lang: 'ko', href: 'sitemap_ko.html' },
{ lang: 'zh', href: 'sitemap_zh.html' },
{ lang: 'x-default', href: 'sitemap.html' },
];
const sitemapEnMtime = getFileModTime(path.join(ROOT_DIR, 'sitemap.html'));
xml += generateUrlEntry('sitemap.html', sitemapEnMtime, 'monthly', '0.6', sitemapAlternates);
// Individual sitemap language pages (excluding English)
const sitemapLangPages: Array<{ file: string; priority: string }> = [
{ file: 'sitemap_sv.html', priority: '0.5' },
{ file: 'sitemap_da.html', priority: '0.4' },
{ file: 'sitemap_no.html', priority: '0.4' },
{ file: 'sitemap_fi.html', priority: '0.4' },
{ file: 'sitemap_de.html', priority: '0.4' },
{ file: 'sitemap_fr.html', priority: '0.4' },
{ file: 'sitemap_es.html', priority: '0.4' },
{ file: 'sitemap_nl.html', priority: '0.4' },
{ file: 'sitemap_ar.html', priority: '0.4' },
{ file: 'sitemap_he.html', priority: '0.4' },
{ file: 'sitemap_ja.html', priority: '0.4' },
{ file: 'sitemap_ko.html', priority: '0.4' },
{ file: 'sitemap_zh.html', priority: '0.4' },
];
sitemapLangPages.forEach(({ file, priority }) => {
const lastmod = getFileModTime(path.join(ROOT_DIR, file));
xml += generateUrlEntry(file, lastmod, 'monthly', priority);
});
// News index pages
const newsLangFiles = [
'index.html', 'index_sv.html', 'index_da.html', 'index_no.html', 'index_fi.html',
'index_de.html', 'index_fr.html', 'index_es.html', 'index_nl.html', 'index_ar.html', 'index_he.html',
];
const newsIndexMtimes = newsLangFiles.map((file) => {
try {
return new Date(getFileModTime(path.join(NEWS_DIR, file)));
} catch (_e: unknown) {
return new Date(0);
}
});
const newsIndexMaxMtime = new Date(Math.max(...newsIndexMtimes.map((d) => d.getTime()))).toISOString();
// Build alternates for news index pages that actually exist
const newsIndexAlternates: HreflangAlternate[] = [
{ lang: 'en', href: 'news/' },
{ lang: 'sv', href: 'news/index_sv.html' },
{ lang: 'da', href: 'news/index_da.html' },
{ lang: 'no', href: 'news/index_no.html' },
{ lang: 'fi', href: 'news/index_fi.html' },
{ lang: 'de', href: 'news/index_de.html' },
{ lang: 'fr', href: 'news/index_fr.html' },
{ lang: 'es', href: 'news/index_es.html' },
{ lang: 'nl', href: 'news/index_nl.html' },
{ lang: 'ar', href: 'news/index_ar.html' },
{ lang: 'he', href: 'news/index_he.html' },
{ lang: 'x-default', href: 'news/' },
];
xml += generateUrlEntry('news/', newsIndexMaxMtime, 'daily', '0.9', newsIndexAlternates);
// Add individual entries for each news language page (excluding EN)
const newsLanguagePages: Array<{ file: string; priority: string }> = [
{ file: 'index_sv.html', priority: '0.9' },
{ file: 'index_da.html', priority: '0.7' },
{ file: 'index_no.html', priority: '0.7' },
{ file: 'index_fi.html', priority: '0.7' },
{ file: 'index_de.html', priority: '0.7' },
{ file: 'index_fr.html', priority: '0.7' },
{ file: 'index_es.html', priority: '0.7' },
{ file: 'index_nl.html', priority: '0.7' },
{ file: 'index_ar.html', priority: '0.7' },
{ file: 'index_he.html', priority: '0.7' },
];
newsLanguagePages.forEach(({ file, priority }) => {
try {
const lastmod = getFileModTime(path.join(NEWS_DIR, file));
xml += generateUrlEntry(`news/${file}`, lastmod, 'daily', priority);
} catch (_e: unknown) {
// File doesn't exist yet, skip
}
});
// News articles
const articles = getNewsArticles();
console.log(` Processing ${articles.length} article groups...`);
articles.forEach((article) => {
const sortedLanguages = [...article.languages].sort((a, b) => {
if (a === 'en') return -1;
if (b === 'en') return 1;
return a.localeCompare(b);
});
const alternates: HreflangAlternate[] = sortedLanguages.map((altLang) => ({
lang: altLang,
href: `news/${article.baseSlug}-${altLang}.html`,
}));
alternates.push({
lang: 'x-default',
href: `news/${article.baseSlug}-${sortedLanguages[0]}.html`,
});
sortedLanguages.forEach((lang) => {
const loc = `news/${article.baseSlug}-${lang}.html`;
xml += generateUrlEntry(loc, article.lastmod, 'monthly', '0.8', alternates);
});
});
// API Documentation (TypeDoc generated)
const apiDocs = getApiDocs();
Eif (apiDocs.length > 0) {
console.log(` Processing ${apiDocs.length} API documentation files...`);
apiDocs.forEach((doc) => {
const loc = `api/${doc.file}`;
const priority = doc.file === 'index.html' ? '0.7' : '0.5';
xml += generateUrlEntry(loc, doc.lastmod, 'weekly', priority);
});
}
xml += `
</urlset>`;
return xml;
}
/**
* Validate sitemap XML.
*/
function validateSitemap(xml: string): boolean {
console.log('✅ Validating sitemap...');
if (!xml.includes('<?xml version="1.0"')) {
throw new Error('Invalid XML declaration');
}
if (!xml.includes('<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"')) {
throw new Error('Invalid sitemap namespace');
}
const urlCount = (xml.match(/<url>/g) || []).length;
console.log(` Found ${urlCount} URLs in sitemap`);
if (urlCount === 0) {
throw new Error('No URLs in sitemap');
}
if (!xml.includes('<loc>')) {
throw new Error('Missing <loc> tags');
}
console.log(' ✅ Sitemap validation passed');
return true;
}
/**
* Main function.
*/
function main(): number {
try {
console.log('🚀 Starting sitemap generation...\n');
const sitemap = generateSitemap();
validateSitemap(sitemap);
fs.writeFileSync(SITEMAP_FILE, sitemap, 'utf8');
console.log(`\n✅ Sitemap written to: ${SITEMAP_FILE}`);
const stats = fs.statSync(SITEMAP_FILE);
console.log(` File size: ${(stats.size / 1024).toFixed(2)} KB`);
return 0;
} catch (error: unknown) {
console.error('❌ Error generating sitemap:', (error as Error).message);
return 1;
}
}
// Run if called directly
const exitCode = main();
process.exit(exitCode);
export { generateSitemap, validateSitemap };
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