From 7021789621c4b82615cdd8f63929ac50a38bc586 Mon Sep 17 00:00:00 2001
From: Victor Gerbrands <victorgerbrands@gmail.com>
Date: Tue, 2 May 2023 15:41:48 +0200
Subject: [PATCH] feat: add medusa endpoints and reshapers

---
 lib/medusa/index.ts | 180 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 180 insertions(+)
 create mode 100644 lib/medusa/index.ts

diff --git a/lib/medusa/index.ts b/lib/medusa/index.ts
new file mode 100644
index 000000000..cae2fc2f3
--- /dev/null
+++ b/lib/medusa/index.ts
@@ -0,0 +1,180 @@
+import { isShopifyError } from 'lib/type-guards';
+import { Cart, MedusaCart, MedusaProduct, Product, ProductCollection } from './types';
+
+// const endpoint = `${process.env.MEDUSA_BACKEND_API!}`;
+const endpoint = `http://localhost:9000/store`;
+
+export default async function medusaRequest(
+  method: string,
+  path = '',
+  payload?: Record<string, unknown> | undefined
+) {
+  const options: RequestInit = {
+    method,
+    headers: {
+      'Content-Type': 'application/json'
+    }
+  };
+
+  if (payload) {
+    options.body = JSON.stringify(payload);
+  }
+
+  try {
+    const result = await fetch(`${endpoint}/${path}`, options);
+
+    const body = await result.json();
+
+    if (body.errors) {
+      throw body.errors[0];
+    }
+
+    return {
+      status: result.status,
+      body
+    };
+  } catch (e) {
+    if (isShopifyError(e)) {
+      throw {
+        status: e.status || 500,
+        message: e.message
+      };
+    }
+
+    throw {
+      error: e
+    };
+  }
+}
+
+const reshapeCart = (cart: MedusaCart): Cart => {
+  const lines = cart.items;
+  const totalQuantity = cart.items.length || 0;
+
+  return {
+    ...cart,
+    totalQuantity,
+    lines
+  };
+};
+
+const reshapeProduct = (product: MedusaProduct): Product => {
+  const featuredImage = {
+    url: product.images?.[0]?.url ?? ''
+  };
+  const priceRange = {
+    maxVariantPrice: {
+      amount: product.variants?.[0]?.prices?.[0]?.amount.toString() ?? '',
+      currencyCode: product.variants?.[0]?.prices?.[0]?.currency_code ?? ''
+    }
+  };
+
+  return {
+    ...product,
+    featuredImage,
+    priceRange
+  };
+};
+
+export async function createCart(): Promise<Cart> {
+  const res = await medusaRequest('POST', '/carts', {});
+  console.log('Cart created!');
+  console.log(res);
+  return reshapeCart(res.body.cart);
+}
+
+export async function addToCart(
+  cartId: string,
+  lineItems: { variantId: string; quantity: number }[]
+): Promise<Cart> {
+  console.log(lineItems);
+  // TODO: transform lines into Medusa line items
+  const res = await medusaRequest('POST', `/carts/${cartId}/line-items`, {
+    lineItems
+  });
+
+  return res.body.data.cart;
+}
+
+export async function removeFromCart(cartId: string, lineIds: string[]): Promise<Cart> {
+  // TODO: We only allow you to pass a single line item to delete
+  const res = await medusaRequest('DELETE', `/carts/${cartId}/line-items/${lineIds[0]}`);
+
+  return res.body.data.cart;
+}
+
+export async function updateCart(
+  cartId: string,
+  lines: { id: string; merchandiseId: string; quantity: number }[]
+): Promise<Cart> {
+  console.log(lines);
+  // TODO: transform lines into Medusa line items
+  const res = await medusaRequest('POST', `/carts/${cartId}`, {});
+  return res.body.data.cart;
+}
+
+export async function getCart(cartId: string): Promise<Cart | null> {
+  const res = await medusaRequest('GET', `/carts/${cartId}`);
+
+  if (!res.body.cart) {
+    return null;
+  }
+
+  return res.body.cart;
+}
+
+export async function getCollection(handle: string): Promise<ProductCollection | undefined> {
+  const res = await medusaRequest('GET', `/collections?handle[]=${handle}&limit=1`);
+  return res.body.collections[0];
+}
+
+export async function getCollectionProducts(handle: string): Promise<Product[]> {
+  const collection = await getCollection(handle);
+
+  if (!collection) {
+    return [];
+  }
+
+  const res = await medusaRequest('GET', `/products?collection_id[]=${collection.id}`);
+
+  if (!res.body?.products) {
+    return [];
+  }
+
+  return res.body.products.map((product: Product) => reshapeProduct(product));
+}
+
+export async function getCollections(): Promise<ProductCollection[]> {
+  const collections = [
+    {
+      handle: '',
+      title: 'All',
+      description: 'All products',
+      seo: {
+        title: 'All',
+        description: 'All products'
+      },
+      path: '/search',
+      updatedAt: new Date().toISOString()
+    }
+  ];
+
+  // return collections;
+  return [];
+}
+
+export async function getProduct(handle: string): Promise<Product | undefined> {
+  const res = await medusaRequest('get', `/products?handle=${handle}&limit=1`);
+  return res.body.product;
+}
+
+export async function getProducts({
+  query
+}: {
+  query?: string;
+  reverse?: boolean;
+  sortKey?: string;
+}): Promise<Product[]> {
+  const res = await medusaRequest('get', `/products?q=${query}&limit=20`);
+  return res.body.products;
+}