feat: implement fetching product catalog + order details on MD

src/Utils/business.ts

@@ -0,0 +1,107 @@
+import { CatalogCollection, CatalogStatus, OrderDetails, OrderProduct, Product } from '../Types'
+import { BinaryNode, getBinaryNodeChild, getBinaryNodeChildBuffer, getBinaryNodeChildren, getBinaryNodeChildString } from '../WABinary'
+
+export const parseCatalogNode = (node: BinaryNode) => {
+	const catalogNode = getBinaryNodeChild(node, 'product_catalog')
+	const products = getBinaryNodeChildren(catalogNode, 'product').map(parseProductNode)
+	return { products }
+}
+
+export const parseCollectionsNode = (node: BinaryNode) => {
+	const collectionsNode = getBinaryNodeChild(node, 'collections')
+	const collections = getBinaryNodeChildren(collectionsNode, 'collection').map<CatalogCollection>(
+		collectionNode => {
+			const id = parseCatalogId(collectionNode)
+			const name = getBinaryNodeChildString(collectionNode, 'name')
+
+			const products = getBinaryNodeChildren(collectionNode, 'product').map(parseProductNode)
+			return {
+				id,
+				name,
+				products,
+				status: parseStatusInfo(collectionNode)
+			}
+		}
+	)
+
+	return {
+		collections
+	}
+}
+
+export const parseOrderDetailsNode = (node: BinaryNode) => {
+	const orderNode = getBinaryNodeChild(node, 'order')
+	const products = getBinaryNodeChildren(orderNode, 'product').map<OrderProduct>(
+		productNode => {
+			const imageNode = getBinaryNodeChild(productNode, 'image')
+			return {
+				id: parseCatalogId(productNode),
+				name: getBinaryNodeChildString(productNode, 'name'),
+				imageUrl: getBinaryNodeChildString(imageNode, 'url'),
+				price: +getBinaryNodeChildString(productNode, 'price'),
+				currency: getBinaryNodeChildString(productNode, 'currency'),
+				quantity: +getBinaryNodeChildString(productNode, 'quantity')
+			}
+		}
+	)
+
+	const priceNode = getBinaryNodeChild(orderNode, 'price')
+
+	const orderDetails: OrderDetails = {
+		price: {
+			total: +getBinaryNodeChildString(priceNode, 'total'),
+			currency: getBinaryNodeChildString(priceNode, 'currency'),
+		},
+		products
+	}
+
+	return orderDetails
+}
+
+const parseProductNode = (productNode: BinaryNode) => {
+	const isHidden = productNode.attrs.is_hidden === 'true'
+	const id = parseCatalogId(productNode)
+
+	const mediaNode = getBinaryNodeChild(productNode, 'media')
+	const statusInfoNode = getBinaryNodeChild(productNode, 'status_info')
+
+	const product: Product = {
+		id,
+		imageUrls: parseImageUrls(mediaNode),
+		reviewStatus: {
+			whatsapp: getBinaryNodeChildString(statusInfoNode, 'status'),
+		},
+		availability: 'in stock',
+		name: getBinaryNodeChildString(productNode, 'name'),
+		retailerId: getBinaryNodeChildString(productNode, 'retailer_id'),
+		url: getBinaryNodeChildString(productNode, 'url'),
+		description: getBinaryNodeChildString(productNode, 'description'),
+		price:  +getBinaryNodeChildString(productNode, 'price'),
+		currency: getBinaryNodeChildString(productNode, 'currency'),
+		isHidden,
+	}
+
+	return product
+}
+
+const parseImageUrls = (mediaNode: BinaryNode) => {
+	const imgNode = getBinaryNodeChild(mediaNode, 'image')
+	return {
+		requested: getBinaryNodeChildString(imgNode, 'request_image_url'),
+		original: getBinaryNodeChildString(imgNode, 'original_image_url')
+	}
+}
+
+const parseStatusInfo = (mediaNode: BinaryNode): CatalogStatus => {
+	const node = getBinaryNodeChild(mediaNode, 'status_info')
+	return {
+		status: getBinaryNodeChildString(node, 'status'),
+		canAppeal: getBinaryNodeChildString(node, 'can_appeal') === 'true',
+	}
+}
+
+const parseCatalogId = (node: BinaryNode) => {
+	const idNode = getBinaryNodeChildBuffer(node, 'id')
+	const id = Buffer.from(idNode).readBigUInt64LE().toString()
+	return id
+}