Added framework folder

framework/bigcommerce/api/cart/handlers/add-item.ts

@@ -0,0 +1,40 @@
+import { parseCartItem } from '../../utils/parse-item'
+import getCartCookie from '../../utils/get-cart-cookie'
+import type { CartHandlers } from '..'
+
+// Return current cart info
+const addItem: CartHandlers['addItem'] = async ({
+  res,
+  body: { cartId, item },
+  config,
+}) => {
+  if (!item) {
+    return res.status(400).json({
+      data: null,
+      errors: [{ message: 'Missing item' }],
+    })
+  }
+  if (!item.quantity) item.quantity = 1
+
+  const options = {
+    method: 'POST',
+    body: JSON.stringify({
+      line_items: [parseCartItem(item)],
+      ...(!cartId && config.storeChannelId
+        ? { channel_id: config.storeChannelId }
+        : {}),
+    }),
+  }
+  const { data } = cartId
+    ? await config.storeApiFetch(`/v3/carts/${cartId}/items`, options)
+    : await config.storeApiFetch('/v3/carts', options)
+
+  // Create or update the cart cookie
+  res.setHeader(
+    'Set-Cookie',
+    getCartCookie(config.cartCookie, data.id, config.cartCookieMaxAge)
+  )
+  res.status(200).json({ data })
+}
+
+export default addItem

framework/bigcommerce/api/cart/handlers/get-cart.ts

@@ -0,0 +1,29 @@
+import { BigcommerceApiError } from '../../utils/errors'
+import getCartCookie from '../../utils/get-cart-cookie'
+import type { Cart, CartHandlers } from '..'
+
+// Return current cart info
+const getCart: CartHandlers['getCart'] = async ({
+  res,
+  body: { cartId },
+  config,
+}) => {
+  let result: { data?: Cart } = {}
+
+  if (cartId) {
+    try {
+      result = await config.storeApiFetch(`/v3/carts/${cartId}`)
+    } catch (error) {
+      if (error instanceof BigcommerceApiError && error.status === 404) {
+        // Remove the cookie if it exists but the cart wasn't found
+        res.setHeader('Set-Cookie', getCartCookie(config.cartCookie))
+      } else {
+        throw error
+      }
+    }
+  }
+
+  res.status(200).json({ data: result.data ?? null })
+}
+
+export default getCart

framework/bigcommerce/api/cart/handlers/remove-item.ts

@@ -0,0 +1,34 @@
+import getCartCookie from '../../utils/get-cart-cookie'
+import type { CartHandlers } from '..'
+
+// Return current cart info
+const removeItem: CartHandlers['removeItem'] = async ({
+  res,
+  body: { cartId, itemId },
+  config,
+}) => {
+  if (!cartId || !itemId) {
+    return res.status(400).json({
+      data: null,
+      errors: [{ message: 'Invalid request' }],
+    })
+  }
+
+  const result = await config.storeApiFetch<{ data: any } | null>(
+    `/v3/carts/${cartId}/items/${itemId}`,
+    { method: 'DELETE' }
+  )
+  const data = result?.data ?? null
+
+  res.setHeader(
+    'Set-Cookie',
+    data
+      ? // Update the cart cookie
+        getCartCookie(config.cartCookie, cartId, config.cartCookieMaxAge)
+      : // Remove the cart cookie if the cart was removed (empty items)
+        getCartCookie(config.cartCookie)
+  )
+  res.status(200).json({ data })
+}
+
+export default removeItem

framework/bigcommerce/api/cart/handlers/update-item.ts

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+import { parseCartItem } from '../../utils/parse-item'
+import getCartCookie from '../../utils/get-cart-cookie'
+import type { CartHandlers } from '..'
+
+// Return current cart info
+const updateItem: CartHandlers['updateItem'] = async ({
+  res,
+  body: { cartId, itemId, item },
+  config,
+}) => {
+  if (!cartId || !itemId || !item) {
+    return res.status(400).json({
+      data: null,
+      errors: [{ message: 'Invalid request' }],
+    })
+  }
+
+  const { data } = await config.storeApiFetch(
+    `/v3/carts/${cartId}/items/${itemId}`,
+    {
+      method: 'PUT',
+      body: JSON.stringify({
+        line_item: parseCartItem(item),
+      }),
+    }
+  )
+
+  // Update the cart cookie
+  res.setHeader(
+    'Set-Cookie',
+    getCartCookie(config.cartCookie, cartId, config.cartCookieMaxAge)
+  )
+  res.status(200).json({ data })
+}
+
+export default updateItem