wehub-resource-sync
72 lines
1.8 KiB
TypeScript
72 lines
1.8 KiB
TypeScript
// @ts-expect-error - no types, but it's a tiny function
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import sortBy from "sort-by";
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import invariant from "tiny-invariant";
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export type CartRecord = {
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itemId: string;
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quantity: number;
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};
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const fakeCart = {
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records: {} as Record<string, CartRecord>,
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async getAll(): Promise<CartRecord[]> {
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return Object.keys(fakeCart.records)
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.map((key) => fakeCart.records[key])
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.sort(sortBy("-itemId", "last"));
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},
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async get(id: string): Promise<CartRecord | null> {
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return fakeCart.records[id] || null;
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},
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async addToCart(id: string, quantity: number): Promise<CartRecord> {
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invariant(quantity > 0, "quantity to add must be > 0");
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const existing = await fakeCart.get(id);
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const previous = existing?.quantity || 0;
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const newRecord = { itemId: id, quantity: previous + quantity };
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fakeCart.records[id] = newRecord;
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return newRecord;
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},
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async updateQuantity(
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id: string,
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quantity: number,
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): Promise<CartRecord | null> {
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invariant(quantity >= 0, "quantity must be >= 0");
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if (quantity == 0) {
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return fakeCart.removeItem(id);
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}
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const newRecord = { itemId: id, quantity: quantity };
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fakeCart.records[id] = newRecord;
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return newRecord;
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},
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removeItem(id: string): null {
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delete fakeCart.records[id];
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return null;
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},
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};
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export async function getCartItem(id: string) {
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return fakeCart.get(id);
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}
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export async function getCart() {
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await new Promise((resolve) => setTimeout(resolve, 500));
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const items = await fakeCart.getAll();
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return items.sort(sortBy("displayName"));
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}
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export async function addToCart(item: CartRecord) {
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return fakeCart.addToCart(item.itemId, item.quantity);
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}
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export async function checkout() {
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fakeCart.records = {};
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}
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export async function removeItem(itemId: string) {
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return fakeCart.removeItem(itemId);
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}
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