Initial commit - QR Master application

src/lib/geo.ts

@@ -0,0 +1,50 @@
+export function getCountryFromHeaders(headers: Headers): string | null {
+  // Try Vercel's country header first
+  const vercelCountry = headers.get('x-vercel-ip-country');
+  if (vercelCountry) {
+    return vercelCountry;
+  }
+
+  // Try Cloudflare's country header
+  const cfCountry = headers.get('cf-ipcountry');
+  if (cfCountry && cfCountry !== 'XX') {
+    return cfCountry;
+  }
+
+  // Fallback to other common headers
+  const country = headers.get('x-country-code') || headers.get('x-forwarded-country');
+  return country || null;
+}
+
+export function parseUserAgent(userAgent: string | null): { device: string | null; os: string | null } {
+  if (!userAgent) {
+    return { device: null, os: null };
+  }
+
+  let device: string | null = null;
+  let os: string | null = null;
+
+  // Detect device
+  if (/Mobile|Android|iPhone|iPad/.test(userAgent)) {
+    device = 'mobile';
+  } else if (/Tablet|iPad/.test(userAgent)) {
+    device = 'tablet';
+  } else {
+    device = 'desktop';
+  }
+
+  // Detect OS
+  if (/Windows/.test(userAgent)) {
+    os = 'Windows';
+  } else if (/Mac OS X|macOS/.test(userAgent)) {
+    os = 'macOS';
+  } else if (/Linux/.test(userAgent)) {
+    os = 'Linux';
+  } else if (/Android/.test(userAgent)) {
+    os = 'Android';
+  } else if (/iOS|iPhone|iPad/.test(userAgent)) {
+    os = 'iOS';
+  }
+
+  return { device, os };
+}