Update blog metrics; add vercel imsights

src/lib/views.ts

@@ -0,0 +1,55 @@
+import Redis from "ioredis";
+
+let redis: Redis | null = null;
+
+function getRedis(): Redis | null {
+  if (redis) return redis;
+
+  const url = import.meta.env.REDIS_URL || process.env.REDIS_URL;
+  if (!url) return null;
+
+  redis = new Redis(url);
+  return redis;
+}
+
+export async function incrementViews(slug: string): Promise<number> {
+  const r = getRedis();
+  if (!r) return 0;
+
+  try {
+    return await r.incr(`views:${slug}`);
+  } catch {
+    return 0;
+  }
+}
+
+export async function getViews(slug: string): Promise<number> {
+  const r = getRedis();
+  if (!r) return 0;
+
+  try {
+    const val = await r.get(`views:${slug}`);
+    return val ? parseInt(val, 10) : 0;
+  } catch {
+    return 0;
+  }
+}
+
+export async function getAllViews(slugs: string[]): Promise<Record<string, number>> {
+  const r = getRedis();
+  const result: Record<string, number> = {};
+
+  if (!r || slugs.length === 0) return result;
+
+  try {
+    const keys = slugs.map(s => `views:${s}`);
+    const values = await r.mget(...keys);
+    for (let i = 0; i < slugs.length; i++) {
+      result[slugs[i]] = values[i] ? parseInt(values[i], 10) : 0;
+    }
+  } catch {
+    // Return empty counts if Redis unavailable
+  }
+
+  return result;
+}