fix: enhance domain handling in sitemap generation and add XML escaping utility

app/sitemap.js

@@ -13,9 +13,15 @@ import {
 
 // Get current domain from headers
 function getCurrentDomain() {
-    const headersList = headers();
-    const host = headersList.get('host');
-    return host || DOMAIN_CONFIG.MAIN_DOMAIN;
+    try {
+        const headersList = headers();
+        const host = headersList.get('host');
+        return host || DOMAIN_CONFIG.MAIN_DOMAIN;
+    } catch (error) {
+        // Fallback for static generation
+        console.warn('Headers not available during static generation, using main domain');
+        return DOMAIN_CONFIG.MAIN_DOMAIN;
+    }
 }
 
 // Get city data based on domain
@@ -225,12 +231,17 @@ export default async function sitemap() {
         const domain = getCurrentDomain();
         const baseUrl = getBaseUrl(domain);
 
+        console.log(`Generating sitemap for domain: ${domain}, baseUrl: ${baseUrl}`);
+        console.log(`City data length: ${cityData.length}, Specialty data length: ${specialtyData.length}`);
+
         // Get all URLs
         const staticPages = getStaticPages(baseUrl);
         const doctorSearchUrls = getDoctorSearchUrls(domain, baseUrl);
         const clinicSearchUrls = getClinicSearchUrls(domain, baseUrl);
         const specialtyUrls = getSpecialtyUrls(domain, baseUrl);
 
+        console.log(`Generated URLs - Static: ${staticPages.length}, Doctors: ${doctorSearchUrls.length}, Clinics: ${clinicSearchUrls.length}, Specialties: ${specialtyUrls.length}`);
+
         // Combine all URLs
         const allUrls = [
             ...staticPages,
@@ -244,6 +255,7 @@ export default async function sitemap() {
             arr.findIndex(i => i.url === item.url) === index
         );
 
+        console.log(`Total unique URLs: ${uniqueUrls.length}`);
         return uniqueUrls;
     } catch (error) {
         console.error('Error generating sitemap:', error);