feat(pricing, types): PriceSets as entry point to pricing module (#4978)

What:
- Adds PriceSet, PriceSetMoneyAmount, updates schema
- Adds service/repo for PriceSet
- Shifts entry point to use PriceSet
- Updates link/joiner config

RESOLVES CORE-1495

packages/pricing/src/models/index.ts

@@ -1,2 +1,4 @@
 export { default as Currency } from "./currency"
 export { default as MoneyAmount } from "./money-amount"
+export { default as PriceSet } from "./price-set"
+export { default as PriceSetMoneyAmount } from "./price-set-money-amount"

packages/pricing/src/models/money-amount.ts

@@ -1,13 +1,16 @@
 import { generateEntityId } from "@medusajs/utils"
 import {
   BeforeCreate,
+  Collection,
   Entity,
+  ManyToMany,
   ManyToOne,
   PrimaryKey,
   Property,
 } from "@mikro-orm/core"
 
 import Currency from "./currency"
+import PriceSet from "./price-set"
 
 @Entity()
 class MoneyAmount {
@@ -17,6 +20,12 @@ class MoneyAmount {
   @Property({ columnType: "text", nullable: true })
   currency_code?: string
 
+  @ManyToMany({
+    entity: () => PriceSet,
+    mappedBy: (ps) => ps.money_amounts,
+  })
+  price_sets = new Collection<PriceSet>(this)
+
   @ManyToOne(() => Currency, {
     nullable: true,
     index: "IDX_money_amount_currency_code",

packages/pricing/src/models/price-set-money-amount.ts

@@ -0,0 +1,39 @@
+import { generateEntityId } from "@medusajs/utils"
+import {
+  BeforeCreate,
+  Entity,
+  ManyToOne,
+  PrimaryKey,
+  PrimaryKeyType,
+  Property,
+} from "@mikro-orm/core"
+
+import MoneyAmount from "./money-amount"
+import PriceSet from "./price-set"
+
+@Entity()
+export default class PriceSetMoneyAmount {
+  @PrimaryKey({ columnType: "text" })
+  id!: string
+
+  @Property({ columnType: "text" })
+  title!: string
+
+  @ManyToOne(() => PriceSet, { onDelete: "cascade" })
+  price_set?: PriceSet
+
+  @ManyToOne(() => MoneyAmount, {})
+  money_amount?: MoneyAmount
+
+  @BeforeCreate()
+  onCreate() {
+    this.id = generateEntityId(this.id, "psma")
+  }
+
+  [PrimaryKeyType]?: [string, string]
+
+  constructor(money_amount: MoneyAmount, price_set: PriceSet) {
+    this.money_amount = money_amount
+    this.price_set = price_set
+  }
+}

packages/pricing/src/models/price-set.ts

@@ -0,0 +1,28 @@
+import { generateEntityId } from "@medusajs/utils"
+import {
+  BeforeCreate,
+  Collection,
+  Entity,
+  ManyToMany,
+  PrimaryKey,
+} from "@mikro-orm/core"
+
+import MoneyAmount from "./money-amount"
+import PriceSetMoneyAmount from "./price-set-money-amount"
+
+@Entity()
+export default class PriceSet {
+  @PrimaryKey({ columnType: "text" })
+  id!: string
+
+  @ManyToMany({
+    entity: () => MoneyAmount,
+    pivotEntity: () => PriceSetMoneyAmount,
+  })
+  money_amounts = new Collection<MoneyAmount>(this)
+
+  @BeforeCreate()
+  onCreate() {
+    this.id = generateEntityId(this.id, "pset")
+  }
+}