Initial commit

src/lib/collection.ts

@@ -0,0 +1,54 @@
+/**
+ * Shared helpers for the `mycards` PocketBase collection:
+ * record typing and Cardmarket price resolution via the cached TCGdex client.
+ */
+
+import { getCard } from "./tcgdex-cache";
+
+export interface MyCardRecord {
+    id: string;
+    user: string;
+    card_id: string;
+    card_name: string;
+    card_image: string;
+    variant: string;
+    quantity: number;
+    condition: string;
+    notes: string;
+    set_name: string;
+    created: string;
+    updated: string;
+}
+
+export type PricedCard = MyCardRecord & { price: number; totalPrice: number };
+
+/** Collection variant label → Cardmarket avg price field. */
+export const variantPriceMap: Record<string, string> = {
+    Base: "avg",
+    Holo: "avg-holo",
+    Reverse: "avg-reverse",
+    "First Edition": "avg-firstEdition",
+    Promo: "avg-wPromo",
+};
+
+/**
+ * Resolve the Cardmarket unit price and line total for each collection card.
+ * Card details come from the 24h in-memory cache, so repeated cards and
+ * repeated page loads don't hit the TCGdex API again.
+ */
+export async function priceCollectionCards(
+    cards: MyCardRecord[],
+): Promise<PricedCard[]> {
+    return Promise.all(
+        cards.map(async (card) => {
+            let price = 0;
+            const detail = await getCard(card.card_id);
+            const cardmarket = detail?.pricing?.cardmarket;
+            if (cardmarket) {
+                const priceKey = variantPriceMap[card.variant] ?? "avg";
+                price = cardmarket[priceKey] ?? cardmarket.avg ?? 0;
+            }
+            return { ...card, price, totalPrice: price * card.quantity };
+        }),
+    );
+}