feat: implement core platform features including business directory, admin dashboard, authentication, and API infrastructure

lib/geo.ts

@@ -0,0 +1,44 @@
+export async function getGeoInfo(ip: string, headers: Headers) {
+  // 1. Try platform-specific headers first (Vercel, Cloudflare, etc.)
+  const headerCountry = 
+    headers.get('x-vercel-ip-country') || 
+    headers.get('cf-ipcountry') || 
+    headers.get('x-country-code');
+    
+  if (headerCountry && headerCountry !== 'XX') {
+    // If we have a country code, we might still want to get the name
+    // For now, let's keep it simple or use a lookup map
+    return { 
+      country: headerCountry, 
+      city: headers.get('x-vercel-ip-city') || 'Unknown' 
+    };
+  }
+
+  // 2. Handle localhost
+  if (ip === '127.0.0.1' || ip === '::1' || ip.includes('127.0.0.1')) {
+    return { country: 'Local / Dev', city: 'Localhost' };
+  }
+
+  // 3. Fallback to external API
+  try {
+    const controller = new AbortController();
+    const timeoutId = setTimeout(() => controller.abort(), 2000); // 2s timeout
+    
+    const response = await fetch(`http://ip-api.com/json/${ip}`, { signal: controller.signal });
+    clearTimeout(timeoutId);
+    
+    if (response.ok) {
+      const data = await response.json();
+      if (data.status === 'success') {
+        return { 
+          country: data.country || 'Unknown', 
+          city: data.city || 'Unknown' 
+        };
+      }
+    }
+  } catch (error) {
+    console.error('GeoIP lookup error:', error);
+  }
+
+  return { country: 'Unknown', city: 'Unknown' };
+}