feat: add AI event data fetching functions

src/hooks/useAIEvents.ts

@@ -0,0 +1,46 @@
+import { prisma } from '@/lib/prisma';
+
+export async function getAIEvents(options?: {
+  year?: number;
+  limit?: number;
+  offset?: number;
+}) {
+  const where = options?.year
+    ? {
+        eventDate: {
+          gte: new Date(`${options.year}-01-01T00:00:00Z`),
+          lte: new Date(`${options.year}-12-31T23:59:59Z`),
+        },
+      }
+    : undefined;
+
+  const events = await prisma.aIEvent.findMany({
+    where,
+    orderBy: { eventDate: 'desc' },
+    take: options?.limit || 100,
+    skip: options?.offset || 0,
+  });
+
+  return events;
+}
+
+export async function getAIEventBySlug(slug: string) {
+  // 暂不实现，后续如需要详细页面时添加
+  return null;
+}
+
+export async function getAllAIEventYears() {
+  const events = await prisma.aIEvent.findMany({
+    select: {
+      eventDate: true,
+    },
+    orderBy: { eventDate: 'desc' },
+  });
+
+  const years = new Set<number>();
+  events.forEach(event => {
+    years.add(new Date(event.eventDate).getFullYear());
+  });
+
+  return Array.from(years).sort((a, b) => b - a);
+}