feat(pricing,types): price list API + price calculations with price lists (#5498)

**what:**

**PriceList Service APIs:**

- createPriceList
- updatePriceList
- addPriceListPrices
- removePriceListRules
- setPriceListRules
- deletePriceList
- listPriceLists
- listAndCountPriceLists

**Price Calculations**

- Returns prices with price list prices
- Returns a new shape with calculated and original prices


Co-authored-by: Philip Korsholm <88927411+pKorsholm@users.noreply.github.com>

packages/utils/src/common/array-difference.ts

@@ -0,0 +1,15 @@
+type ArrayDifferenceElement = string | number
+
+export function arrayDifference(
+  mainArray: ArrayDifferenceElement[],
+  differingArray: ArrayDifferenceElement[]
+): ArrayDifferenceElement[] {
+  const mainArraySet = new Set(mainArray)
+  const differingArraySet = new Set(differingArray)
+
+  const difference = [...mainArraySet].filter(
+    (element) => !differingArraySet.has(element)
+  )
+
+  return difference
+}

packages/utils/src/common/index.ts

@@ -1,6 +1,9 @@
+export * from "./array-difference"
 export * from "./build-query"
+export * from "./camel-to-snake-case"
 export * from "./container"
 export * from "./deduplicate"
+export * from "./deep-equal-obj"
 export * from "./errors"
 export * from "./generate-entity-id"
 export * from "./get-config-file"
@@ -24,11 +27,9 @@ export * from "./set-metadata"
 export * from "./simple-hash"
 export * from "./string-to-select-relation-object"
 export * from "./stringify-circular"
-export * from "./camel-to-snake-case"
 export * from "./to-camel-case"
 export * from "./to-kebab-case"
 export * from "./to-pascal-case"
 export * from "./transaction"
 export * from "./upper-case-first"
 export * from "./wrap-handler"
-export * from "./deep-equal-obj"

packages/utils/src/pricing/index.ts

@@ -1,38 +1,2 @@
-import { MedusaError } from "../common"
-
-export const ReservedPricingRuleAttributes = [
-  "quantity",
-  "currency_code",
-  "price_list_id",
-]
-
-type RuleAttributeInput = string | undefined
-
-export const getInvalidRuleAttributes = (
-  ruleAttributes: RuleAttributeInput[]
-): string[] => {
-  const invalidRuleAttributes: string[] = []
-
-  for (const attribute of ReservedPricingRuleAttributes) {
-    if (ruleAttributes.indexOf(attribute) > -1) {
-      invalidRuleAttributes.push(attribute)
-    }
-  }
-
-  return invalidRuleAttributes
-}
-
-export const validateRuleAttributes = (
-  ruleAttributes: RuleAttributeInput[]
-): void => {
-  const invalidRuleAttributes = getInvalidRuleAttributes(ruleAttributes)
-
-  if (invalidRuleAttributes.length) {
-    throw new MedusaError(
-      MedusaError.Types.INVALID_DATA,
-      `Can't create rule_attribute with reserved keywords [${ReservedPricingRuleAttributes.join(
-        ", "
-      )}] - ${invalidRuleAttributes.join(", ")}`
-    )
-  }
-}
+export * from "./price-list"
+export * from "./rule-type"

packages/utils/src/pricing/price-list.ts

@@ -0,0 +1,9 @@
+export enum PriceListStatus {
+  ACTIVE = "active",
+  DRAFT = "draft",
+}
+
+export enum PriceListType {
+  SALE = "sale",
+  OVERRIDE = "override",
+}

packages/utils/src/pricing/rule-type.ts

@@ -0,0 +1,37 @@
+import { MedusaError } from "../common"
+type RuleAttributeInput = string | undefined
+
+export const ReservedPricingRuleAttributes = [
+  "quantity",
+  "currency_code",
+  "price_list_id",
+]
+
+export const getInvalidRuleAttributes = (
+  ruleAttributes: RuleAttributeInput[]
+): string[] => {
+  const invalidRuleAttributes: string[] = []
+
+  for (const attribute of ReservedPricingRuleAttributes) {
+    if (ruleAttributes.indexOf(attribute) > -1) {
+      invalidRuleAttributes.push(attribute)
+    }
+  }
+
+  return invalidRuleAttributes
+}
+
+export const validateRuleAttributes = (
+  ruleAttributes: RuleAttributeInput[]
+): void => {
+  const invalidRuleAttributes = getInvalidRuleAttributes(ruleAttributes)
+
+  if (invalidRuleAttributes.length) {
+    throw new MedusaError(
+      MedusaError.Types.INVALID_DATA,
+      `Can't create rule_attribute with reserved keywords [${ReservedPricingRuleAttributes.join(
+        ", "
+      )}] - ${invalidRuleAttributes.join(", ")}`
+    )
+  }
+}