reactioncommerce · aldeed · Oct 8, 2019 · Oct 7, 2019 · Oct 7, 2019 · Oct 7, 2019
diff --git a/imports/node-app/plugins/discount-codes/index.js b/imports/node-app/plugins/discount-codes/index.js
@@ -3,6 +3,9 @@ import getCreditOffDiscount from "./util/getCreditOffDiscount.js";
 import getItemPriceDiscount from "./util/getItemPriceDiscount.js";
 import getPercentageOffDiscount from "./util/getPercentageOffDiscount.js";
 import getShippingDiscount from "./util/getShippingDiscount.js";
+import mutations from "./mutations/index.js";
+import resolvers from "./resolvers/index.js";
+import schemas from "./schemas/index.js";
 import startup from "./startup.js";
 
 /**
@@ -22,6 +25,11 @@ export default async function register(app) {
       "discounts/codes/shipping": [getShippingDiscount],
       "startup": [startup]
     },
+    graphQL: {
+      resolvers,
+      schemas
+    },
+    mutations,
     registry: [
       {
         label: "Codes",
@@ -30,6 +38,11 @@ export default async function register(app) {
       }, {
         provides: ["paymentMethod"],
         template: "discountCodesCheckout"
+      }, {
+        route: "discounts/apply",
+        label: "Apply Discounts",
+        permission: "applyDiscounts",
+        name: "discounts/apply"
       }
     ]
   });

diff --git a/imports/node-app/plugins/discount-codes/mutations/applyDiscountCodeToCart.js b/imports/node-app/plugins/discount-codes/mutations/applyDiscountCodeToCart.js
@@ -0,0 +1,110 @@
+import SimpleSchema from "simpl-schema";
+import Random from "@reactioncommerce/random";
+import ReactionError from "@reactioncommerce/reaction-error";
+import getCart from "../util/getCart.js";
+
+const inputSchema = new SimpleSchema({
+  cartId: String,
+  discountCode: String,
+  shopId: String,
+  token: {
+    type: String,
+    optional: true
+  }
+});
+
+/**
+ * @method applyDiscountCodeToCart
+ * @summary Applies a discount code to a cart
+ * @param {Object} context - an object containing the per-request state
+ * @param {Object} input - an object of all mutation arguments that were sent by the client
+ * @param {Object} input.cartId - Cart to add discount to
+ * @param {Object} input.discountCode - Discount code to add to cart
+ * @param {String} input.shopId - Shop cart belongs to
+ * @param {String} [input.token] - Cart token, if anonymous
+ * @returns {Promise<Object>} An object with the updated cart with the applied discount
+ */
+export default async function applyDiscountCodeToCart(context, input) {
+  inputSchema.validate(input);
+
+  const { cartId, discountCode, shopId, token } = input;
+  const { collections, userHasPermission, userId } = context;
+  const { Cart, Discounts } = collections;
+
+  let userCount = 0;
+  let orderCount = 0;
+  let cart = await getCart(context, shopId, cartId, { cartToken: token, throwIfNotFound: false });
+
+  // If we didn't find a cart, it means it belongs to another user,
+  // not the currently logged in user.
+  // Check to make sure current user has admin permission.
+  if (!cart) {
+    cart = await Cart.findOne({ _id: cartId });
+    if (!cart) {
+      throw new ReactionError("not-found", "Cart not found");
+    }
+
+    if (!userHasPermission(["owner", "admin", "discounts/apply"], shopId)) {
+      throw new ReactionError("access-denied", "Access Denied");
+    }
+  }
+
+  const objectToApplyDiscount = cart;
+
+  const discount = await Discounts.findOne({ code: discountCode });
+  if (!discount) throw new ReactionError("not-found", `No discount found for code ${discountCode}`);
+
+  const { conditions } = discount;
+  let accountLimitExceeded = false;
+  let discountLimitExceeded = false;
+
+  // existing usage count
+  if (discount.transactions) {
+    const users = Array.from(discount.transactions, (trans) => trans.userId);
+    const transactionCount = new Map([...new Set(users)].map((userX) => [userX, users.filter((userY) => userY === userX).length]));
+    const orders = Array.from(discount.transactions, (trans) => trans.cartId);
+    userCount = transactionCount.get(userId);
+    orderCount = orders.length;
+  }
+  // check limits
+  if (conditions) {
+    if (conditions.accountLimit) accountLimitExceeded = conditions.accountLimit <= userCount;
+    if (conditions.redemptionLimit) discountLimitExceeded = conditions.redemptionLimit <= orderCount;
+  }
+
+  // validate basic limit handling
+  if (accountLimitExceeded === true || discountLimitExceeded === true) {
+    throw new ReactionError("error-occurred", "Code is expired");
+  }
+
+  if (!cart.billing) {
+    cart.billing = [];
+  }
+
+  cart.billing.push({
+    _id: Random.id(),
+    amount: discount.discount,
+    createdAt: new Date(),
+    currencyCode: objectToApplyDiscount.currencyCode,
+    data: {
+      discountId: discount._id,
+      code: discount.code
+    },
+    displayName: `Discount Code: ${discount.code}`,
+    method: discount.calculation.method,
+    mode: "discount",
+    name: "discount_code",
+    paymentPluginName: "discount-codes",
+    processor: discount.discountMethod,
+    shopId: objectToApplyDiscount.shopId,
+    status: "created",
+    transactionId: Random.id()
+  });
+
+  // Instead of directly updating cart, we add the discount billing
+  // object from the existing cart, then pass to `saveCart`
+  // to re-run cart through all transforms and validations.
+  const savedCart = await context.mutations.saveCart(context, cart);
+
+  return savedCart;
+}
diff --git a/imports/node-app/plugins/discount-codes/mutations/index.js b/imports/node-app/plugins/discount-codes/mutations/index.js
@@ -0,0 +1,7 @@
+import applyDiscountCodeToCart from "./applyDiscountCodeToCart.js";
+import removeDiscountCodeFromCart from "./removeDiscountCodeFromCart.js";
+
+export default {
+  applyDiscountCodeToCart,
+  removeDiscountCodeFromCart
+};
diff --git a/imports/node-app/plugins/discount-codes/mutations/removeDiscountCodeFromCart.js b/imports/node-app/plugins/discount-codes/mutations/removeDiscountCodeFromCart.js
@@ -0,0 +1,61 @@
+import SimpleSchema from "simpl-schema";
+import ReactionError from "@reactioncommerce/reaction-error";
+import getCart from "../util/getCart.js";
+
+const inputSchema = new SimpleSchema({
+  cartId: String,
+  discountId: String,
+  shopId: String,
+  token: {
+    type: String,
+    optional: true
+  }
+});
+
+/**
+ * @method removeDiscountCodeFromCart
+ * @summary Applies a discount code to a cart
+ * @param {Object} context - an object containing the per-request state
+ * @param {Object} input - an object of all mutation arguments that were sent by the client
+ * @param {Object} input.cartId - Cart to remove discount from
+ * @param {Object} input.discountId - Discount code to remove from cart
+ * @param {String} input.shopId - Shop cart belongs to
+ * @param {String} [input.token] - Cart token, if anonymous
+ * @returns {Promise<Object>} An object with the updated cart with the removed discount
+ */
+export default async function removeDiscountCodeFromCart(context, input) {
+  inputSchema.validate(input);
+
+  const { cartId, discountId, shopId, token } = input;
+  const { collections, userHasPermission } = context;
+  const { Cart } = collections;
+
+  let cart = await getCart(context, shopId, cartId, { cartToken: token, throwIfNotFound: false });
+
+  // If we didn't find a cart, it means it belongs to another user,
+  // not the currently logged in user.
+  // Check to make sure current user has admin permission.
+  if (!cart) {
+    if (!userHasPermission(["owner", "admin", "discounts/apply"], shopId)) {
+      throw new ReactionError("access-denied", "Access Denied");
+    }
+
+    cart = await Cart.findOne({ _id: cartId, shopId });
+    if (!cart) {
+      throw new ReactionError("not-found", "Cart not found");
+    }
+  }
+
+  // Instead of directly updating cart, we remove the discount billing
+  // object from the existing cart, then pass to `saveCart`
+  // to re-run cart through all transforms and validations.
+  const updatedCartBilling = cart.billing.filter((doc) => doc._id !== discountId);
+  if (cart.billing.length === updatedCartBilling.length) {
+    throw new ReactionError("not-found", "No applied discount found with that ID");
+  }
+  cart.billing = updatedCartBilling;
+
+  const savedCart = await context.mutations.saveCart(context, cart);
+
+  return savedCart;
+}
diff --git a/imports/node-app/plugins/discount-codes/resolvers/Mutation/applyDiscountCodeToCart.js b/imports/node-app/plugins/discount-codes/resolvers/Mutation/applyDiscountCodeToCart.js
@@ -0,0 +1,39 @@
+import { decodeCartOpaqueId } from "@reactioncommerce/reaction-graphql-xforms/cart";
+import { decodeShopOpaqueId } from "@reactioncommerce/reaction-graphql-xforms/shop";
+
+/**
+ * @name Mutation/applyDiscountCodeToCart
+ * @method
+ * @memberof Fulfillment/GraphQL
+ * @summary resolver for the applyDiscountCodeToCart GraphQL mutation
+ * @param {Object} parentResult - unused
+ * @param {Object} args.input - an object of all mutation arguments that were sent by the client
+ * @param {Object} args.input.cartId - Cart to add discount to
+ * @param {Object} args.input.discountCode - Discount code to add to cart
+ * @param {String} args.input.shopId - Shop cart belongs to
+ * @param {String} [args.input.token] - Cart token, if anonymous
+ * @param {String} [args.input.clientMutationId] - An optional string identifying the mutation call
+ * @param {Object} context - an object containing the per-request state
+ * @returns {Promise<Object>} applyDiscountCodeToCartPayload
+ */
+export default async function applyDiscountCodeToCart(parentResult, { input }, context) {
+  const {
+    clientMutationId = null,
+    cartId,
+    discountCode,
+    shopId,
+    token
+  } = input;
+
+  const updatedCartWithAppliedDiscountCode = await context.mutations.applyDiscountCodeToCart(context, {
+    cartId: decodeCartOpaqueId(cartId),
+    discountCode,
+    shopId: decodeShopOpaqueId(shopId),
+    token
+  });
+
+  return {
+    clientMutationId,
+    cart: updatedCartWithAppliedDiscountCode
+  };
+}
diff --git a/imports/node-app/plugins/discount-codes/resolvers/Mutation/index.js b/imports/node-app/plugins/discount-codes/resolvers/Mutation/index.js
@@ -0,0 +1,7 @@
+import applyDiscountCodeToCart from "./applyDiscountCodeToCart.js";
+import removeDiscountCodeFromCart from "./removeDiscountCodeFromCart.js";
+
+export default {
+  applyDiscountCodeToCart,
+  removeDiscountCodeFromCart
+};
diff --git a/imports/node-app/plugins/discount-codes/resolvers/Mutation/removeDiscountCodeFromCart.js b/imports/node-app/plugins/discount-codes/resolvers/Mutation/removeDiscountCodeFromCart.js
@@ -0,0 +1,40 @@
+import { decodeCartOpaqueId } from "@reactioncommerce/reaction-graphql-xforms/cart";
+import { decodeDiscountOpaqueId } from "@reactioncommerce/reaction-graphql-xforms/discount";
+import { decodeShopOpaqueId } from "@reactioncommerce/reaction-graphql-xforms/shop";
+
+/**
+ * @name Mutation/removeDiscountCodeFromCart
+ * @method
+ * @memberof Fulfillment/GraphQL
+ * @summary resolver for the removeDiscountCodeFromCart GraphQL mutation
+ * @param {Object} parentResult - unused
+ * @param {Object} args.input - an object of all mutation arguments that were sent by the client
+ * @param {Object} args.input.cartId - Cart to remove discount from
+ * @param {Object} args.input.discountId - Discount code Id to remove from cart
+ * @param {String} args.input.shopId - Shop cart belongs to
+ * @param {String} [args.input.token] - Cart token, if anonymous
+ * @param {String} [args.input.clientMutationId] - An optional string identifying the mutation call
+ * @param {Object} context - an object containing the per-request state
+ * @returns {Promise<Object>} removeDiscountCodeFromCartPayload
+ */
+export default async function removeDiscountCodeFromCart(parentResult, { input }, context) {
+  const {
+    clientMutationId = null,
+    cartId,
+    discountId,
+    shopId,
+    token
+  } = input;
+
+  const updatedCartWithRemovedDiscountCode = await context.mutations.removeDiscountCodeFromCart(context, {
+    cartId: decodeCartOpaqueId(cartId),
+    discountId: decodeDiscountOpaqueId(discountId),
+    shopId: decodeShopOpaqueId(shopId),
+    token
+  });
+
+  return {
+    clientMutationId,
+    cart: updatedCartWithRemovedDiscountCode
+  };
+}
diff --git a/imports/node-app/plugins/discount-codes/resolvers/index.js b/imports/node-app/plugins/discount-codes/resolvers/index.js
@@ -0,0 +1,5 @@
+import Mutation from "./Mutation/index.js";
+
+export default {
+  Mutation
+};
diff --git a/imports/node-app/plugins/discount-codes/schemas/index.js b/imports/node-app/plugins/discount-codes/schemas/index.js
@@ -0,0 +1,3 @@
+import schema from "./schema.graphql";
+
+export default [schema];
diff --git a/imports/node-app/plugins/discount-codes/schemas/schema.graphql b/imports/node-app/plugins/discount-codes/schemas/schema.graphql
@@ -0,0 +1,61 @@
+extend type Mutation {
+  "Apply a discount code to a cart"
+  applyDiscountCodeToCart(
+    "Mutation input"
+    input: ApplyDiscountCodeToCartInput!
+  ): ApplyDiscountCodeToCartPayload!
+
+  "Remove a discount code from a cart"
+  removeDiscountCodeFromCart(
+    "Mutation input"
+    input: RemoveDiscountCodeFromCartInput!
+  ): RemoveDiscountCodeFromCartPayload!
+}
+
+"Input for an `ApplyDiscountCodeToCartInput`"
+input ApplyDiscountCodeToCartInput {
+  "Cart to add discount to"
+  cartId: ID!
+
+  "Discount code to add to cart"
+  discountCode: String!
+
+  "Shop cart belongs to"
+  shopId: ID!
+
+  "Cart token, if anonymous"
+  token: String
+}
+
+"Input for an `RemoveDiscountCodeFromCartInput`"
+input RemoveDiscountCodeFromCartInput {
+  "Cart to add discount to"
+  cartId: ID!
+
+  "ID of the discount you want to remove from the cart"
+  discountId: ID!
+
+  "Shop cart belongs to"
+  shopId: ID!
+
+  "Cart token, if anonymous"
+  token: String
+}
+
+"Response from the `applyDiscountCodeToCart` mutation"
+type ApplyDiscountCodeToCartPayload {
+  "The updated cart with discount code applied"
+  cart: Cart!
+
+  "The same string you sent with the mutation params, for matching mutation calls with their responses"
+  clientMutationId: String
+}
+
+"Response from the `removeDiscountCodeFromCart` mutation"
+type RemoveDiscountCodeFromCartPayload {
+  "The updated cart with discount code removed"
+  cart: Cart!
+
+  "The same string you sent with the mutation params, for matching mutation calls with their responses"
+  clientMutationId: String
+}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,3 @@
		import schema from "./schema.graphql";

		export default [schema];