440 lines
18 KiB
JavaScript
440 lines
18 KiB
JavaScript
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// Express middleware to inject dynamic SEO meta tags
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import fs from 'fs';
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import path from 'path';
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import { fileURLToPath } from 'url';
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import axios from 'axios';
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import { dirname } from 'path';
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = dirname(__filename);
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const seoMiddleware = async (req, res, next) => {
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// Skip non-HTML requests and static assets
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// Skip files with extensions (except .html) - CSS, JS, images, etc.
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const hasExtension = req.path.match(/\.[a-z]{2,4}$/i);
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if (hasExtension && !req.path.endsWith('.html')) {
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return next(); // Let static middleware serve CSS, JS, images, etc.
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}
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// Skip if it's an API route or static asset
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if (req.path.startsWith('/api/') || req.path.startsWith('/assets/') || req.path.startsWith('/home/assets/')) {
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return next();
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}
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// CRITICAL: Process ALL routes that could be HTML pages
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// This includes: /, /home, /home/blog, /home/pricing, etc.
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// Don't call next() - we will send the response ourselves
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console.log('🔍 SEO Middleware checking path:', req.path);
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console.log('🔍 Request method:', req.method);
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console.log('🔍 Full URL:', req.url);
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try {
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console.log('==== SEO Middleware triggered for:', req.path);
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console.log('🔍 Raw req.path:', req.path);
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const normalizedPath = normalizePath(mapToHomeNamespace(req.path));
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console.log('Normalized path:', normalizedPath);
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console.log('🔍 After normalization:', normalizedPath);
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// Attempt dynamic SEO fetch by path/slug first, fallback to pageId map
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const routeToPageId = {
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'/': 1,
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'/home': 1,
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'/home/': 1,
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'/blog': 5,
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'/blog/': 5,
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'/home/blog': 5,
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'/home/blog/': 5,
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'/pricing': 3,
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'/pricing/': 3,
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'/home/pricing': 3,
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'/home/pricing/': 3,
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'/pricing-pozoapp': 3,
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'/pricing-pozoapp/': 3,
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'/home/pricing-pozoapp': 3,
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'/home/pricing-pozoapp/': 3,
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'/contact-us': 4,
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'/contact-us/': 4,
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'/home/contact-us': 4,
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'/home/contact-us/': 4,
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'/signin': 2,
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'/signin/': 2,
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'/home/signin': 2,
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'/home/signin/': 2
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};
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const pageId = routeToPageId[normalizedPath] || 1;
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console.log('Page ID matched:', pageId, 'for path:', normalizedPath);
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console.log('Available routes:', Object.keys(routeToPageId).filter(k => routeToPageId[k] === 5));
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const fullUrl = buildFullUrl(req);
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const baseUrl = `${req.protocol || 'http'}://${req.headers.host || 'localhost:3000'}`;
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// Production URL for images - always use production domain for OG images
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const PRODUCTION_URL = process.env.PRODUCTION_URL || 'https://www.pozo.app';
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// Helper function to ensure image URLs are absolute and use production URL
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const ensureAbsoluteImageUrl = (imagePath) => {
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if (!imagePath) return null;
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// If already absolute URL (starts with http/https), use as-is
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if (/^https?:\/\//i.test(imagePath)) {
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// If it's localhost, replace with production URL
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if (/^https?:\/\/localhost/i.test(imagePath)) {
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return imagePath.replace(/^https?:\/\/[^/]+/i, PRODUCTION_URL);
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}
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return imagePath;
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}
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// If relative path, make it absolute with production URL
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const cleanPath = imagePath.startsWith('/') ? imagePath : `/${imagePath}`;
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return `${PRODUCTION_URL}${cleanPath}`;
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};
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const dynamicSeo = await fetchSEOByPathOrSlug(normalizedPath);
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let dbSeoData = dynamicSeo || (await fetchSEOFromDB(pageId));
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console.log('SEO Data fetched:', dbSeoData ? 'from DB' : 'using fallback');
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if (dbSeoData) {
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console.log('DB SEO Data:', {
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title: dbSeoData.MetaTitle?.substring(0, 50),
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image: dbSeoData.ImageUrl || dbSeoData.image,
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pageId: pageId
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});
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}
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const fallbackData = {
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1: {
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title: 'Retail ERP & POS for Indian MSMEs | POZO',
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description: 'Fast billing, smart inventory, GST-ready POS. POZO helps kirana, mini-supermarkets & retail chains speed checkout, connect weighing scales, and manage multi-store ops.',
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keywords: 'POS software, retail ERP, billing software, inventory management, GST billing, weighing scale POS, multi-store ERP',
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image: `${PRODUCTION_URL}/og/home.jpg`,
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url: fullUrl
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},
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2: {
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title: 'Sign In to PozoApp',
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description: 'Access your business dashboard and manage your retail operations with POZO ERP & POS system.',
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keywords: 'PozoApp login, sign in, business dashboard, retail management',
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image: `${PRODUCTION_URL}/og/Signin-og.jpg`,
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url: fullUrl
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},
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3: {
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title: 'Pricing - Retail ERP & POS Plans | POZO',
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description: 'Simple plans for MSMEs. Fast billing, inventory, GST e-invoice, weighing-scale integration, WhatsApp e-bills & multi-store controls. Book a demo.',
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keywords: 'pricing, POS software pricing, retail ERP plans, billing software pricing, inventory management pricing, GST billing plans',
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image: `${PRODUCTION_URL}/og/pricing-og.jpg`,
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url: fullUrl
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},
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4: {
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title: 'Contact PozoApp',
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description: 'Get support and sales information. Contact POZO for retail ERP & POS solutions, billing software, and inventory management systems.',
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keywords: 'contact PozoApp, support, sales, retail ERP support, POS software support',
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image: `${PRODUCTION_URL}/og/contact-og.jpg`,
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url: fullUrl
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},
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5: {
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title: 'POZO Blog — Retail ERP, POS & Grocery Billing Guides',
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description: 'Practical guides on POS billing, weighing-scale integration, GST e-invoices, multi-store ERP & inventory control for Indian retailers.',
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keywords: 'POS billing, weighing scale integration, GST e-invoices, retail ERP, inventory management, grocery billing guides',
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image: `${PRODUCTION_URL}/og/blog-og.jpg`,
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url: fullUrl
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}
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};
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const chosenFallback = fallbackData[pageId] || fallbackData[1];
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// Ensure image URL is always absolute and uses production URL
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// If database image URL is missing or points to wrong page (e.g., home.jpg for blog), use fallback
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const dbImageUrl = dbSeoData?.ImageUrl || dbSeoData?.image;
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let finalImageUrl = ensureAbsoluteImageUrl(dbImageUrl);
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// Validate image URL - if it's pointing to wrong page image, use correct fallback
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// For blog page (pageId 5), ensure it's not using home.jpg
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if (pageId === 5 && finalImageUrl && finalImageUrl.includes('/og/home.jpg')) {
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console.log('Warning: Blog page has home.jpg image, using blog-og.jpg instead');
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finalImageUrl = chosenFallback.image;
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}
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// For home page (pageId 1), ensure it's not using blog-og.jpg
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if (pageId === 1 && finalImageUrl && finalImageUrl.includes('/og/blog-og.jpg')) {
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console.log('Warning: Home page has blog-og.jpg image, using home.jpg instead');
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finalImageUrl = chosenFallback.image;
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}
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// If no valid image URL, use fallback
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if (!finalImageUrl) {
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finalImageUrl = chosenFallback.image;
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}
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// Validate URL - ensure it matches the current page path
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let finalUrl = dbSeoData?.CanonicalUrl || dbSeoData?.url || fullUrl;
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// If database URL doesn't match the current page path, use correct fullUrl
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// Blog page (pageId 5) should have /blog in URL
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if (pageId === 5 && finalUrl && !finalUrl.includes('/blog')) {
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console.log('Warning: Blog page URL is incorrect, using correct path:', fullUrl);
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finalUrl = fullUrl;
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}
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// Home page (pageId 1) should be root or /home, not other paths
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if (pageId === 1 && finalUrl && finalUrl.includes('/blog')) {
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console.log('Warning: Home page URL is pointing to blog, using correct path:', fullUrl);
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finalUrl = fullUrl;
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}
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// Pricing page (pageId 3) should have /pricing in URL
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if (pageId === 3 && finalUrl && !finalUrl.includes('/pricing')) {
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console.log('Warning: Pricing page URL is incorrect, using correct path:', fullUrl);
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finalUrl = fullUrl;
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}
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// CRITICAL: Force correct image and URL based on pageId
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// Blog page (pageId 5) MUST use blog-og.jpg, not home.jpg
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// Home page (pageId 1) MUST use home.jpg, not blog-og.jpg
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if (pageId === 5) {
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// Blog page - force blog image and URL
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if (!finalImageUrl || finalImageUrl.includes('/og/home.jpg')) {
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console.log('FORCING blog-og.jpg for blog page (pageId 5)');
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finalImageUrl = `${PRODUCTION_URL}/og/blog-og.jpg`;
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}
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if (!finalUrl || !finalUrl.includes('/blog')) {
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console.log('FORCING blog URL for blog page (pageId 5)');
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finalUrl = fullUrl;
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}
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} else if (pageId === 1) {
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// Home page - force home image
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if (!finalImageUrl || finalImageUrl.includes('/og/blog-og.jpg')) {
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console.log('FORCING home.jpg for home page (pageId 1)');
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finalImageUrl = `${PRODUCTION_URL}/og/home.jpg`;
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}
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}
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// Force correct data based on pageId - if database returns wrong page data, use fallback
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// This ensures blog page always gets blog data, not home data
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let seoData;
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if (dbSeoData) {
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// Use database data but with forced correct image/URL
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seoData = {
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title: dbSeoData.MetaTitle || dbSeoData.title || chosenFallback.title,
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description: dbSeoData.MetaDesc || dbSeoData.description || chosenFallback.description,
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keywords: dbSeoData.Keywords || dbSeoData.keywords || chosenFallback.keywords || '',
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image: finalImageUrl, // This is now forced to be correct
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url: finalUrl // This is now forced to be correct
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};
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} else {
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// No database data, use fallback (includes keywords)
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seoData = chosenFallback;
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}
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console.log('Final SEO Data:', { title: seoData.title.substring(0, 50), image: seoData.image, url: seoData.url });
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// Read HTML - try to read from specific path first, fallback to root index.html
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let htmlPath;
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const distPath = path.join(__dirname, '..');
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// Try to find HTML file for the specific route
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// For /home/blog, try dist/home/blog/index.html, then dist/index.html
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if (normalizedPath !== '/' && normalizedPath !== '/home' && normalizedPath !== '/home/') {
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const routeHtmlPath = path.join(distPath, normalizedPath, 'index.html');
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if (fs.existsSync(routeHtmlPath)) {
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htmlPath = routeHtmlPath;
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console.log('Reading HTML from:', routeHtmlPath);
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} else {
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// Try without leading slash
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const routeHtmlPath2 = path.join(distPath, normalizedPath.replace(/^\//, ''), 'index.html');
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if (fs.existsSync(routeHtmlPath2)) {
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htmlPath = routeHtmlPath2;
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console.log('Reading HTML from:', routeHtmlPath2);
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} else {
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htmlPath = path.join(distPath, 'index.html');
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console.log('Using root index.html');
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}
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}
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} else {
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htmlPath = path.join(distPath, 'index.html');
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console.log('Using root index.html for home page');
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}
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let html = fs.readFileSync(htmlPath, 'utf8');
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// ULTRA AGGRESSIVE: Remove ALL existing SEO tags (handles multiline tags)
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// Match from <meta until /> or > (handles multiline with [\s\S]*?)
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const metaTagPattern = /<meta\s+[^>]*?\/?>/gs; // 's' flag makes . match newlines
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// Remove all OG tags (multiline aware)
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html = html.replace(/<meta\s+property=["']og:type["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+property=["']og:url["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+property=["']og:title["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+property=["']og:description["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+property=["']og:image["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+property=["']og:site_name["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+property=["']og:locale["'][\s\S]*?\/?>/gi, '');
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// Remove Twitter tags (multiline aware)
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html = html.replace(/<meta\s+(name|property)=["']twitter:card["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+(name|property)=["']twitter:url["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+(name|property)=["']twitter:title["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+(name|property)=["']twitter:description["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+(name|property)=["']twitter:image["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+(name|property)=["']twitter:site["'][\s\S]*?\/?>/gi, '');
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// Remove description and keywords (multiline aware)
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html = html.replace(/<meta\s+name=["']description["'][\s\S]*?\/?>/gi, '');
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html = html.replace(/<meta\s+name=["']keywords["'][\s\S]*?\/?>/gi, '');
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// Update title
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html = html.replace(/<title>[^<]*<\/title>/i, `<title>${escapeHtml(seoData.title)}</title>`);
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// Update description
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html = html.replace(/<meta\s+name="description"[^>]*\/?>/i, `<meta name="description" content="${escapeHtml(seoData.description)}">`);
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// Update canonical
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html = html.replace(/<link\s+rel="canonical"[^>]*\/?>/i, `<link rel="canonical" href="${escapeAttribute(seoData.url)}">`);
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// Add fresh SEO tags before </head>
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// Include keywords if available
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const keywordsTag = seoData.keywords ? `<meta name="keywords" content="${escapeHtml(seoData.keywords)}" />` : '';
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const seoTags = `
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<!-- SEO Meta Tags -->
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${keywordsTag}
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<!-- Open Graph / Facebook -->
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<meta property="og:type" content="website" />
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<meta property="og:url" content="${escapeAttribute(seoData.url)}" />
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<meta property="og:title" content="${escapeAttribute(seoData.title)}" />
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<meta property="og:description" content="${escapeAttribute(seoData.description)}" />
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<meta property="og:image" content="${escapeAttribute(seoData.image)}" />
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<!-- Twitter -->
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<meta name="twitter:card" content="summary_large_image" />
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<meta name="twitter:url" content="${escapeAttribute(seoData.url)}" />
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<meta name="twitter:title" content="${escapeAttribute(seoData.title)}" />
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<meta name="twitter:description" content="${escapeAttribute(seoData.description)}" />
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<meta name="twitter:image" content="${escapeAttribute(seoData.image)}" />`;
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html = html.replace(/<\/head>/i, `${seoTags}\n</head>`);
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res.send(html);
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} catch (error) {
|
||
|
|
console.error('SEO middleware error:', error);
|
||
|
|
next();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Function to fetch SEO data from your database
|
||
|
|
async function fetchSEOFromDB(pageId) {
|
||
|
|
try {
|
||
|
|
const API_URL = process.env.API_URL || 'https://api.pozo.app';
|
||
|
|
const response = await axios.get(`${API_URL}/Seo?PageId=${pageId}`);
|
||
|
|
if (response.data?.statusCode === 1 && response.data?.data?.length > 0) {
|
||
|
|
return response.data.data[0];
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
} catch (error) {
|
||
|
|
console.error('Failed to fetch SEO data from database:', error.message);
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Try to fetch SEO by exact path or blog slug, with graceful fallbacks
|
||
|
|
async function fetchSEOByPathOrSlug(normalizedPath) {
|
||
|
|
try {
|
||
|
|
const API_URL = process.env.API_URL || 'https://api.pozo.app';
|
||
|
|
|
||
|
|
// 1) Try path-based SEO: /Seo?Path=/home/blog/my-post
|
||
|
|
const byPath = await safeGet(`${API_URL}/Seo`, { Path: normalizedPath });
|
||
|
|
if (byPath) return byPath;
|
||
|
|
|
||
|
|
// 2) If looks like blog detail: /blog/slug or /home/blog/slug
|
||
|
|
if (/^\/(home\/)?blog\//.test(normalizedPath)) {
|
||
|
|
const slug = normalizedPath.replace(/^\/(home\/)?blog\//, '').replace(/\/$/, '');
|
||
|
|
if (slug) {
|
||
|
|
// Try common blog SEO endpoints
|
||
|
|
const blogSeo = await safeGet(`${API_URL}/Seo/Blog`, { slug })
|
||
|
|
|| await safeGet(`${API_URL}/Blog/Seo`, { slug })
|
||
|
|
|| await safeGet(`${API_URL}/Blog`, { slug });
|
||
|
|
if (blogSeo) return blogSeo;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
} catch (e) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
async function safeGet(baseUrl, queryObj) {
|
||
|
|
try {
|
||
|
|
const qs = new URLSearchParams(queryObj).toString();
|
||
|
|
const url = `${baseUrl}?${qs}`;
|
||
|
|
const response = await axios.get(url);
|
||
|
|
const data = response.data;
|
||
|
|
if (data?.statusCode === 1 && Array.isArray(data?.data) && data.data.length > 0) {
|
||
|
|
return data.data[0];
|
||
|
|
}
|
||
|
|
// Some APIs return object directly
|
||
|
|
if (data && typeof data === 'object' && !Array.isArray(data)) return data;
|
||
|
|
return null;
|
||
|
|
} catch (e) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function normalizePath(p) {
|
||
|
|
if (!p) return '/';
|
||
|
|
try {
|
||
|
|
// Remove query/hash, ensure leading slash, collapse duplicate slashes
|
||
|
|
const onlyPath = p.split('?')[0].split('#')[0] || '/';
|
||
|
|
// Collapse multiple slashes to single slash, but preserve path structure
|
||
|
|
let normalized = onlyPath.replace(/\/+/g, '/');
|
||
|
|
if (!normalized.startsWith('/')) normalized = `/${normalized}`;
|
||
|
|
// Remove trailing slash except for root
|
||
|
|
if (normalized.length > 1 && normalized.endsWith('/')) {
|
||
|
|
normalized = normalized.slice(0, -1);
|
||
|
|
}
|
||
|
|
console.log('🔍 normalizePath input:', p, '→ output:', normalized);
|
||
|
|
return normalized;
|
||
|
|
} catch {
|
||
|
|
return '/';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Map routes - support both /home/* and clean routes
|
||
|
|
function mapToHomeNamespace(p) {
|
||
|
|
if (!p) return '/';
|
||
|
|
const raw = p.split('?')[0].split('#')[0] || '/';
|
||
|
|
|
||
|
|
// Just normalize and return - we support both /home/ and clean routes now
|
||
|
|
return normalizePath(raw);
|
||
|
|
}
|
||
|
|
|
||
|
|
function buildFullUrl(req) {
|
||
|
|
const proto = (req.headers['x-forwarded-proto'] || req.protocol || 'https').split(',')[0];
|
||
|
|
const host = req.headers['x-forwarded-host'] || req.headers.host || 'www.pozo.app';
|
||
|
|
const pathOnly = normalizePath(req.path);
|
||
|
|
return `${proto}://${host}${pathOnly}`;
|
||
|
|
}
|
||
|
|
|
||
|
|
function replaceOrInsert(html, regex, newTagHtml) {
|
||
|
|
if (regex.test(html)) {
|
||
|
|
return html.replace(regex, newTagHtml);
|
||
|
|
}
|
||
|
|
// Insert before </head>
|
||
|
|
if (/<\/head>/i.test(html)) {
|
||
|
|
return html.replace(/<\/head>/i, `${newTagHtml}\n</head>`);
|
||
|
|
}
|
||
|
|
// As a last resort, prepend to document
|
||
|
|
return `${newTagHtml}\n${html}`;
|
||
|
|
}
|
||
|
|
|
||
|
|
function escapeHtml(str) {
|
||
|
|
return String(str || '')
|
||
|
|
.replace(/&/g, '&')
|
||
|
|
.replace(/</g, '<')
|
||
|
|
.replace(/>/g, '>');
|
||
|
|
}
|
||
|
|
|
||
|
|
function escapeAttribute(str) {
|
||
|
|
return String(str || '')
|
||
|
|
.replace(/&/g, '&')
|
||
|
|
.replace(/"/g, '"')
|
||
|
|
.replace(/</g, '<')
|
||
|
|
.replace(/>/g, '>');
|
||
|
|
}
|
||
|
|
|
||
|
|
export default seoMiddleware;
|