Add streak counter to flashcards

src/services/shareService.ts

@@ -49,6 +49,49 @@ export async function getShareLink(token: string) {
   });
 }
 
+/**
+ * Names, descriptions and counts only — enough to build social/link-preview
+ * metadata without loading every card, question and option.
+ */
+export async function getShareLinkMeta(token: string) {
+  return prisma.shareLink.findUnique({
+    where: { id: token },
+    select: {
+      deck: {
+        select: {
+          name: true,
+          description: true,
+          class: { select: { slug: true, name: true } },
+          _count: { select: { cards: true } },
+        },
+      },
+      quizSet: {
+        select: {
+          name: true,
+          description: true,
+          class: { select: { slug: true, name: true } },
+          _count: { select: { questions: true } },
+        },
+      },
+      group: {
+        select: {
+          name: true,
+          type: true,
+          class: { select: { slug: true, name: true } },
+          decks: {
+            select: { id: true, name: true, description: true, _count: { select: { cards: true } } },
+            orderBy: { sortOrder: "asc" },
+          },
+          quizSets: {
+            select: { id: true, name: true, description: true, _count: { select: { questions: true } } },
+            orderBy: { sortOrder: "asc" },
+          },
+        },
+      },
+    },
+  });
+}
+
 export async function getShareLinkForContent(targetType: "DECK" | "QUIZ" | "GROUP", contentId: string) {
   if (targetType === "DECK") {
     return prisma.shareLink.findUnique({ where: { deckId: contentId } });