feat(medusa): Add endpoint for retrieving a DiscountCondition (#1525)

packages/medusa-react/mocks/handlers/admin.ts

@@ -1,5 +1,5 @@
-import { fixtures } from "../data"
 import { rest } from "msw"
+import { fixtures } from "../data"
 
 export const adminHandlers = [
   rest.post("/admin/collections/", (req, res, ctx) => {
@@ -784,6 +784,19 @@ export const adminHandlers = [
     )
   }),
 
+  rest.get("/admin/discounts/:id/conditions/:conditionId", (req, res, ctx) => {
+    return res(
+      ctx.status(200),
+      ctx.json({
+        discount_condition: {
+          ...fixtures
+            .get("discount")
+            .rule.conditions.find(c => c.id === req.params.conditionId),
+        },
+      })
+    )
+  }),
+
   rest.delete(
     "/admin/discounts/:id/conditions/:conditionId",
     (req, res, ctx) => {

packages/medusa-react/src/hooks/admin/discounts/queries.ts

@@ -1,7 +1,9 @@
 import {
+  AdminDiscountConditionsRes,
   AdminDiscountsListRes,
   AdminDiscountsRes,
   AdminGetDiscountParams,
+  AdminGetDiscountsDiscountConditionsConditionParams,
   AdminGetDiscountsParams,
 } from "@medusajs/medusa"
 import { Response } from "@medusajs/medusa-js"
@@ -12,7 +14,16 @@ import { queryKeysFactory } from "../../utils/index"
 
 const ADMIN_DISCOUNTS_QUERY_KEY = `admin_discounts` as const
 
-export const adminDiscountKeys = queryKeysFactory(ADMIN_DISCOUNTS_QUERY_KEY)
+export const adminDiscountKeys = {
+  ...queryKeysFactory(ADMIN_DISCOUNTS_QUERY_KEY),
+  detailCondition(id: string, query?: any) {
+    return [
+      ...this.detail(id),
+      "condition" as const,
+      { ...(query || {}) },
+    ] as const
+  },
+}
 
 type DiscountQueryKeys = typeof adminDiscountKeys
 
@@ -67,3 +78,22 @@ export const useAdminGetDiscountByCode = (
   )
   return { ...data, ...rest } as const
 }
+
+export const useAdminGetDiscountCondition = (
+  id: string,
+  conditionId: string,
+  query?: AdminGetDiscountsDiscountConditionsConditionParams,
+  options?: UseQueryOptionsWrapper<
+    Response<AdminDiscountConditionsRes>,
+    Error,
+    ReturnType<DiscountQueryKeys["detailCondition"]>
+  >
+) => {
+  const { client } = useMedusa()
+  const { data, ...rest } = useQuery(
+    adminDiscountKeys.detailCondition(conditionId),
+    () => client.admin.discounts.getCondition(id, conditionId, query),
+    options
+  )
+  return { ...data, ...rest } as const
+}

packages/medusa-react/test/hooks/admin/discounts/queries.test.ts

@@ -1,10 +1,11 @@
+import { renderHook } from "@testing-library/react-hooks"
+import { fixtures } from "../../../../mocks/data"
 import {
   useAdminDiscount,
   useAdminDiscounts,
   useAdminGetDiscountByCode,
+  useAdminGetDiscountCondition,
 } from "../../../../src"
-import { renderHook } from "@testing-library/react-hooks"
-import { fixtures } from "../../../../mocks/data"
 import { createWrapper } from "../../../utils"
 
 describe("useAdminDiscounts hook", () => {
@@ -54,3 +55,26 @@ describe("useAdminDiscount hook", () => {
     expect(result.current.discount).toEqual(discount)
   })
 })
+
+describe("useAdminGetDiscountCondition hook", () => {
+  test("returns a discount condition", async () => {
+    const discount = fixtures.get("discount")
+    const { result, waitFor } = renderHook(
+      () =>
+        useAdminGetDiscountCondition(
+          discount.id,
+          discount.rule.conditions[0].id
+        ),
+      {
+        wrapper: createWrapper(),
+      }
+    )
+
+    await waitFor(() => result.current.isSuccess)
+
+    expect(result.current.response.status).toEqual(200)
+    expect(result.current.discount_condition).toEqual(
+      discount.rule.conditions[0]
+    )
+  })
+})