feat(pricing, types, utils, medusa-sdk): Pricing Module Setup + Currency (#4860)

What:

- Setups the skeleton for pricing module
- Creates service/model/repository for currency model
- Setups types
- Setups DB
- Moved some utils to a common place

RESOLVES CORE-1477
RESOLVES CORE-1476

packages/pricing/src/index.ts

@@ -0,0 +1,10 @@
+import { moduleDefinition } from "./module-definition"
+
+export default moduleDefinition
+
+export * from "./scripts"
+export * from "./initialize"
+export * from "./types"
+export * from "./loaders"
+export * from "./models"
+export * from "./services"

packages/pricing/src/initialize/index.ts

@@ -0,0 +1,31 @@
+import {
+  ExternalModuleDeclaration,
+  InternalModuleDeclaration,
+  MedusaModule,
+  MODULE_PACKAGE_NAMES,
+  Modules,
+} from "@medusajs/modules-sdk"
+import { IPricingModuleService, ModulesSdkTypes } from "@medusajs/types"
+import { moduleDefinition } from "../module-definition"
+import { InitializeModuleInjectableDependencies } from "../types"
+
+export const initialize = async (
+  options?:
+    | ModulesSdkTypes.ModuleServiceInitializeOptions
+    | ModulesSdkTypes.ModuleServiceInitializeCustomDataLayerOptions
+    | ExternalModuleDeclaration
+    | InternalModuleDeclaration,
+  injectedDependencies?: InitializeModuleInjectableDependencies
+): Promise<IPricingModuleService> => {
+  const serviceKey = Modules.PRICING
+
+  const loaded = await MedusaModule.bootstrap<IPricingModuleService>(
+    serviceKey,
+    MODULE_PACKAGE_NAMES[Modules.PRICING],
+    options as InternalModuleDeclaration | ExternalModuleDeclaration,
+    moduleDefinition,
+    injectedDependencies
+  )
+
+  return loaded[serviceKey]
+}

packages/pricing/src/joiner-config.ts

@@ -0,0 +1,38 @@
+import { Modules } from "@medusajs/modules-sdk"
+import { JoinerServiceConfig } from "@medusajs/types"
+import { MapToConfig } from "@medusajs/utils"
+import { Currency } from "@models"
+
+export enum LinkableKeys {
+  MONEY_AMOUNT_ID = "money_amount_id",
+  CURRENCY_CODE = "code",
+}
+
+export const entityNameToLinkableKeysMap: MapToConfig = {
+  [Currency.name]: [{ mapTo: LinkableKeys.CURRENCY_CODE, valueFrom: "code" }],
+}
+
+export const joinerConfig: JoinerServiceConfig = {
+  serviceName: Modules.PRICING,
+  primaryKeys: ["code"],
+  alias: [
+    // {
+    //   name: "money_amount",
+    // },
+    // {
+    //   name: "money_amounts",
+    // },
+    {
+      name: "currency",
+      args: {
+        methodSuffix: "Currencies",
+      },
+    },
+    {
+      name: "currencies",
+      args: {
+        methodSuffix: "Currencies",
+      },
+    },
+  ],
+}

packages/pricing/src/loaders/connection.ts

@@ -0,0 +1,27 @@
+import { InternalModuleDeclaration, LoaderOptions } from "@medusajs/modules-sdk"
+import { ModulesSdkTypes } from "@medusajs/types"
+import { ModulesSdkUtils } from "@medusajs/utils"
+import { EntitySchema } from "@mikro-orm/core"
+import * as PricingModels from "../models"
+
+export default async (
+  {
+    options,
+    container,
+    logger,
+  }: LoaderOptions<
+    | ModulesSdkTypes.ModuleServiceInitializeOptions
+    | ModulesSdkTypes.ModuleServiceInitializeCustomDataLayerOptions
+  >,
+  moduleDeclaration?: InternalModuleDeclaration
+): Promise<void> => {
+  const entities = Object.values(PricingModels) as unknown as EntitySchema[]
+
+  await ModulesSdkUtils.mikroOrmConnectionLoader({
+    entities,
+    container,
+    options,
+    moduleDeclaration,
+    logger,
+  })
+}

packages/pricing/src/loaders/container.ts

@@ -0,0 +1,41 @@
+import { ModulesSdkTypes } from "@medusajs/types"
+import * as defaultRepositories from "@repositories"
+import { BaseRepository, CurrencyRepository } from "@repositories"
+import { CurrencyService } from "@services"
+
+import { LoaderOptions } from "@medusajs/modules-sdk"
+import { loadCustomRepositories } from "@medusajs/utils"
+import { asClass } from "awilix"
+
+export default async ({
+  container,
+  options,
+}: LoaderOptions<
+  | ModulesSdkTypes.ModuleServiceInitializeOptions
+  | ModulesSdkTypes.ModuleServiceInitializeCustomDataLayerOptions
+>): Promise<void> => {
+  const customRepositories = (
+    options as ModulesSdkTypes.ModuleServiceInitializeCustomDataLayerOptions
+  )?.repositories
+
+  container.register({
+    currencyService: asClass(CurrencyService).singleton(),
+  })
+
+  if (customRepositories) {
+    loadCustomRepositories({
+      defaultRepositories,
+      customRepositories,
+      container,
+    })
+  } else {
+    loadDefaultRepositories({ container })
+  }
+}
+
+function loadDefaultRepositories({ container }) {
+  container.register({
+    baseRepository: asClass(BaseRepository).singleton(),
+    currencyRepository: asClass(CurrencyRepository).singleton(),
+  })
+}

packages/pricing/src/loaders/index.ts

@@ -0,0 +1,2 @@
+export * from "./connection"
+export * from "./container"

packages/pricing/src/migrations/.snapshot-medusa-pricing.json

@@ -0,0 +1,63 @@
+{
+  "namespaces": [
+    "public"
+  ],
+  "name": "public",
+  "tables": [
+    {
+      "columns": {
+        "code": {
+          "name": "code",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "symbol": {
+          "name": "symbol",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "symbol_native": {
+          "name": "symbol_native",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "mappedType": "text"
+        }
+      },
+      "name": "currency",
+      "schema": "public",
+      "indexes": [
+        {
+          "keyName": "currency_pkey",
+          "columnNames": [
+            "code"
+          ],
+          "composite": false,
+          "primary": true,
+          "unique": true
+        }
+      ],
+      "checks": [],
+      "foreignKeys": {}
+    }
+  ]
+}

packages/pricing/src/migrations/Migration20230828182018.ts

@@ -0,0 +1,9 @@
+import { Migration } from '@mikro-orm/migrations';
+
+export class Migration20230828182018 extends Migration {
+
+  async up(): Promise<void> {
+    this.addSql('create table "currency" ("code" text not null, "symbol" text not null, "symbol_native" text not null, "name" text not null, constraint "currency_pkey" primary key ("code"));');
+  }
+
+}

packages/pricing/src/models/currency.ts

@@ -0,0 +1,27 @@
+import { Entity, PrimaryKey, Property } from "@mikro-orm/core"
+
+@Entity({ tableName: "currency" })
+class Currency {
+  @PrimaryKey({ columnType: "text" })
+  code!: string
+
+  @Property({ columnType: "text" })
+  symbol: string
+
+  @Property({ columnType: "text" })
+  symbol_native: string
+
+  @Property({ columnType: "text" })
+  name: string
+
+  // @Property({ persist: false })
+  // get includes_tax() {
+  //   // TODO: This comes from a feature flag
+  //   // Figure out how we're handling FF in modules
+  //   // For now, returning default as true
+  //   // This should also not fall on the hands of the model
+  //   return true
+  // }
+}
+
+export default Currency

packages/pricing/src/models/index.ts

@@ -0,0 +1 @@
+export { default as Currency } from "./currency"

packages/pricing/src/module-definition.ts

@@ -0,0 +1,12 @@
+import { ModuleExports } from "@medusajs/types"
+import { PricingModuleService } from "@services"
+import loadConnection from "./loaders/connection"
+import loadContainer from "./loaders/container"
+
+const service = PricingModuleService
+const loaders = [loadContainer, loadConnection] as any
+
+export const moduleDefinition: ModuleExports = {
+  service,
+  loaders,
+}

packages/pricing/src/repositories/currency.ts

@@ -0,0 +1,127 @@
+import {
+  Context,
+  CreateCurrencyDTO,
+  DAL,
+  UpdateCurrencyDTO,
+} from "@medusajs/types"
+import { DALUtils, MedusaError } from "@medusajs/utils"
+import {
+  LoadStrategy,
+  FilterQuery as MikroFilterQuery,
+  FindOptions as MikroOptions,
+} from "@mikro-orm/core"
+import { SqlEntityManager } from "@mikro-orm/postgresql"
+import { Currency } from "@models"
+
+export class CurrencyRepository extends DALUtils.MikroOrmBaseRepository {
+  protected readonly manager_: SqlEntityManager
+
+  constructor({ manager }: { manager: SqlEntityManager }) {
+    // @ts-ignore
+    // eslint-disable-next-line prefer-rest-params
+    super(...arguments)
+    this.manager_ = manager
+  }
+
+  async find(
+    findOptions: DAL.FindOptions<Currency> = { where: {} },
+    context: Context = {}
+  ): Promise<Currency[]> {
+    const manager = this.getActiveManager<SqlEntityManager>(context)
+
+    const findOptions_ = { ...findOptions }
+    findOptions_.options ??= {}
+
+    Object.assign(findOptions_.options, {
+      strategy: LoadStrategy.SELECT_IN,
+    })
+
+    return await manager.find(
+      Currency,
+      findOptions_.where as MikroFilterQuery<Currency>,
+      findOptions_.options as MikroOptions<Currency>
+    )
+  }
+
+  async findAndCount(
+    findOptions: DAL.FindOptions<Currency> = { where: {} },
+    context: Context = {}
+  ): Promise<[Currency[], number]> {
+    const manager = this.getActiveManager<SqlEntityManager>(context)
+
+    const findOptions_ = { ...findOptions }
+    findOptions_.options ??= {}
+
+    Object.assign(findOptions_.options, {
+      strategy: LoadStrategy.SELECT_IN,
+    })
+
+    return await manager.findAndCount(
+      Currency,
+      findOptions_.where as MikroFilterQuery<Currency>,
+      findOptions_.options as MikroOptions<Currency>
+    )
+  }
+
+  async delete(codes: string[], context: Context = {}): Promise<void> {
+    const manager = this.getActiveManager<SqlEntityManager>(context)
+    await manager.nativeDelete(Currency, { code: { $in: codes } }, {})
+  }
+
+  async create(
+    data: CreateCurrencyDTO[],
+    context: Context = {}
+  ): Promise<Currency[]> {
+    const manager = this.getActiveManager<SqlEntityManager>(context)
+
+    const currencies = data.map((currencyData) => {
+      return manager.create(Currency, currencyData)
+    })
+
+    manager.persist(currencies)
+
+    return currencies
+  }
+
+  async update(
+    data: UpdateCurrencyDTO[],
+    context: Context = {}
+  ): Promise<Currency[]> {
+    const manager = this.getActiveManager<SqlEntityManager>(context)
+    const currencyCodes = data.map((currencyData) => currencyData.code)
+    const existingCurrencies = await this.find(
+      {
+        where: {
+          code: {
+            $in: currencyCodes,
+          },
+        },
+      },
+      context
+    )
+
+    const existingCurrencyMap = new Map(
+      existingCurrencies.map<[string, Currency]>((currency) => [
+        currency.code,
+        currency,
+      ])
+    )
+
+    const currencies = data.map((currencyData) => {
+      const existingCurrency = existingCurrencyMap.get(currencyData.code)
+
+      if (!existingCurrency) {
+        throw new MedusaError(
+          MedusaError.Types.NOT_FOUND,
+          `Currency with code "${currencyData.code}" not found`
+        )
+      }
+
+      return manager.assign(existingCurrency, currencyData)
+    })
+
+    manager.persist(currencies)
+
+    return currencies
+  }
+}

packages/pricing/src/repositories/index.ts

@@ -0,0 +1,2 @@
+export { MikroOrmBaseRepository as BaseRepository } from "@medusajs/utils"
+export { CurrencyRepository } from "./currency"

packages/pricing/src/scripts/bin/run-migration-down.ts

@@ -0,0 +1,8 @@
+#!/usr/bin/env node
+
+export default (async () => {
+  const { revertMigration } = await import("../migration-down")
+  const { config } = await import("dotenv")
+  config()
+  await revertMigration()
+})()

packages/pricing/src/scripts/bin/run-migration-up.ts

@@ -0,0 +1,8 @@
+#!/usr/bin/env node
+
+export default (async () => {
+  const { runMigrations } = await import("../migration-up")
+  const { config } = await import("dotenv")
+  config()
+  await runMigrations()
+})()

packages/pricing/src/scripts/bin/run-seed.ts

@@ -0,0 +1,19 @@
+#!/usr/bin/env node
+
+import { EOL } from "os"
+import { run } from "../seed"
+
+const args = process.argv
+const path = args.pop() as string
+
+export default (async () => {
+  const { config } = await import("dotenv")
+  config()
+  if (!path) {
+    throw new Error(
+      `filePath is required.${EOL}Example: medusa-pricing-seed <filePath>`
+    )
+  }
+
+  await run({ path })
+})()

packages/pricing/src/scripts/index.ts

@@ -0,0 +1,2 @@
+export * from "./migration-up"
+export * from "./migration-down"

packages/pricing/src/scripts/migration-down.ts

@@ -0,0 +1,39 @@
+import * as PricingModels from "@models"
+
+import { LoaderOptions, Logger, ModulesSdkTypes } from "@medusajs/types"
+
+import { DALUtils, ModulesSdkUtils } from "@medusajs/utils"
+import { EntitySchema } from "@mikro-orm/core"
+
+/**
+ * This script is only valid for mikro orm managers. If a user provide a custom manager
+ * he is in charge of reverting the migrations.
+ * @param options
+ * @param logger
+ * @param moduleDeclaration
+ */
+export async function revertMigration({
+  options,
+  logger,
+}: Pick<
+  LoaderOptions<ModulesSdkTypes.ModuleServiceInitializeOptions>,
+  "options" | "logger"
+> = {}) {
+  logger ??= console as unknown as Logger
+
+  const dbData = ModulesSdkUtils.loadDatabaseConfig("pricing", options)!
+  const entities = Object.values(PricingModels) as unknown as EntitySchema[]
+
+  const orm = await DALUtils.mikroOrmCreateConnection(dbData, entities)
+
+  try {
+    const migrator = orm.getMigrator()
+    await migrator.down()
+
+    logger?.info("Pricing module migration executed")
+  } catch (error) {
+    logger?.error(`Pricing module migration failed to run - Error: ${error}`)
+  }
+
+  await orm.close()
+}

packages/pricing/src/scripts/migration-up.ts

@@ -0,0 +1,43 @@
+import { LoaderOptions, Logger, ModulesSdkTypes } from "@medusajs/types"
+import { DALUtils, ModulesSdkUtils } from "@medusajs/utils"
+import { EntitySchema } from "@mikro-orm/core"
+import * as PricingModels from "@models"
+
+/**
+ * This script is only valid for mikro orm managers. If a user provide a custom manager
+ * he is in charge of running the migrations.
+ * @param options
+ * @param logger
+ * @param moduleDeclaration
+ */
+export async function runMigrations({
+  options,
+  logger,
+}: Pick<
+  LoaderOptions<ModulesSdkTypes.ModuleServiceInitializeOptions>,
+  "options" | "logger"
+> = {}) {
+  logger ??= console as unknown as Logger
+
+  const dbData = ModulesSdkUtils.loadDatabaseConfig("pricing", options)!
+  const entities = Object.values(PricingModels) as unknown as EntitySchema[]
+
+  const orm = await DALUtils.mikroOrmCreateConnection(dbData, entities)
+
+  try {
+    const migrator = orm.getMigrator()
+
+    const pendingMigrations = await migrator.getPendingMigrations()
+    logger.info(`Running pending migrations: ${pendingMigrations}`)
+
+    await migrator.up({
+      migrations: pendingMigrations.map((m) => m.name),
+    })
+
+    logger.info("Pricing module migration executed")
+  } catch (error) {
+    logger.error(`Pricing module migration failed to run - Error: ${error}`)
+  }
+
+  await orm.close()
+}

packages/pricing/src/scripts/seed.ts

@@ -0,0 +1,64 @@
+import { LoaderOptions, Logger, ModulesSdkTypes } from "@medusajs/types"
+import { DALUtils, ModulesSdkUtils } from "@medusajs/utils"
+import { EntitySchema, RequiredEntityData } from "@mikro-orm/core"
+import { SqlEntityManager } from "@mikro-orm/postgresql"
+import * as PricingModels from "@models"
+import { EOL } from "os"
+import { resolve } from "path"
+
+export async function run({
+  options,
+  logger,
+  path,
+}: Partial<
+  Pick<
+    LoaderOptions<ModulesSdkTypes.ModuleServiceInitializeOptions>,
+    "options" | "logger"
+  >
+> & {
+  path: string
+}) {
+  logger ??= console as unknown as Logger
+
+  logger.info(`Loading seed data from ${path}...`)
+
+  const { currenciesData } = await import(resolve(process.cwd(), path)).catch(
+    (e) => {
+      logger?.error(
+        `Failed to load seed data from ${path}. Please, provide a relative path and check that you export the following currenciesData.${EOL}${e}`
+      )
+      throw e
+    }
+  )
+
+  const dbData = ModulesSdkUtils.loadDatabaseConfig("pricing", options)!
+  const entities = Object.values(PricingModels) as unknown as EntitySchema[]
+
+  const orm = await DALUtils.mikroOrmCreateConnection(dbData, entities)
+  const manager = orm.em.fork()
+
+  try {
+    logger.info("Inserting currencies")
+
+    await createCurrencies(manager, currenciesData)
+  } catch (e) {
+    logger.error(
+      `Failed to insert the seed data in the PostgreSQL database ${dbData.clientUrl}.${EOL}${e}`
+    )
+  }
+
+  await orm.close(true)
+}
+
+async function createCurrencies(
+  manager: SqlEntityManager,
+  data: RequiredEntityData<PricingModels.Currency>[]
+) {
+  const currencies: any[] = data.map((currencyData) => {
+    return manager.create(PricingModels.Currency, currencyData)
+  })
+
+  await manager.persistAndFlush(currencies)
+
+  return currencies
+}

packages/pricing/src/services/__fixtures__/currency.ts

@@ -0,0 +1,21 @@
+import { CurrencyService } from "@services"
+import { asClass, asValue, createContainer } from "awilix"
+
+export const nonExistingCurrencyCode = "non-existing-code"
+export const mockContainer = createContainer()
+
+mockContainer.register({
+  transaction: asValue(async (task) => await task()),
+  currencyRepository: asValue({
+    find: jest.fn().mockImplementation(async ({ where: { code } }) => {
+      if (code === nonExistingCurrencyCode) {
+        return []
+      }
+
+      return [{}]
+    }),
+    findAndCount: jest.fn().mockResolvedValue([[], 0]),
+    getFreshManager: jest.fn().mockResolvedValue({}),
+  }),
+  currencyService: asClass(CurrencyService),
+})

packages/pricing/src/services/__tests__/currency.spec.ts

@@ -0,0 +1,203 @@
+import {
+  mockContainer,
+  nonExistingCurrencyCode,
+} from "../__fixtures__/currency"
+
+const code = "existing-currency"
+
+describe("Currency service", function () {
+  beforeEach(function () {
+    jest.clearAllMocks()
+  })
+
+  it("should retrieve a currency", async function () {
+    const currencyService = mockContainer.resolve("currencyService")
+    const currencyRepository = mockContainer.resolve("currencyRepository")
+
+    await currencyService.retrieve(code)
+
+    expect(currencyRepository.find).toHaveBeenCalledWith(
+      {
+        where: {
+          code,
+        },
+        options: {
+          fields: undefined,
+          limit: 15,
+          offset: undefined,
+          populate: [],
+        },
+      },
+      expect.any(Object)
+    )
+  })
+
+  it("should fail to retrieve a currency", async function () {
+    const currencyService = mockContainer.resolve("currencyService")
+    const currencyRepository = mockContainer.resolve("currencyRepository")
+
+    const err = await currencyService
+      .retrieve(nonExistingCurrencyCode)
+      .catch((e) => e)
+
+    expect(currencyRepository.find).toHaveBeenCalledWith(
+      {
+        where: {
+          code: nonExistingCurrencyCode,
+        },
+        options: {
+          fields: undefined,
+          limit: 15,
+          offset: undefined,
+          populate: [],
+          withDeleted: undefined,
+        },
+      },
+      expect.any(Object)
+    )
+
+    expect(err.message).toBe(
+      `Currency with code: ${nonExistingCurrencyCode} was not found`
+    )
+  })
+
+  it("should list currencys", async function () {
+    const currencyService = mockContainer.resolve("currencyService")
+    const currencyRepository = mockContainer.resolve("currencyRepository")
+
+    const filters = {}
+    const config = {
+      relations: [],
+    }
+
+    await currencyService.list(filters, config)
+
+    expect(currencyRepository.find).toHaveBeenCalledWith(
+      {
+        where: {},
+        options: {
+          fields: undefined,
+          limit: 15,
+          offset: undefined,
+          populate: [],
+          withDeleted: undefined,
+        },
+      },
+      expect.any(Object)
+    )
+  })
+
+  it("should list currencys with filters", async function () {
+    const currencyService = mockContainer.resolve("currencyService")
+    const currencyRepository = mockContainer.resolve("currencyRepository")
+
+    const filters = {
+      tags: {
+        value: {
+          $in: ["test"],
+        },
+      },
+    }
+    const config = {
+      relations: [],
+    }
+
+    await currencyService.list(filters, config)
+
+    expect(currencyRepository.find).toHaveBeenCalledWith(
+      {
+        where: {
+          tags: {
+            value: {
+              $in: ["test"],
+            },
+          },
+        },
+        options: {
+          fields: undefined,
+          limit: 15,
+          offset: undefined,
+          populate: [],
+          withDeleted: undefined,
+        },
+      },
+      expect.any(Object)
+    )
+  })
+
+  it("should list currencys with filters and relations", async function () {
+    const currencyService = mockContainer.resolve("currencyService")
+    const currencyRepository = mockContainer.resolve("currencyRepository")
+
+    const filters = {
+      tags: {
+        value: {
+          $in: ["test"],
+        },
+      },
+    }
+    const config = {
+      relations: ["tags"],
+    }
+
+    await currencyService.list(filters, config)
+
+    expect(currencyRepository.find).toHaveBeenCalledWith(
+      {
+        where: {
+          tags: {
+            value: {
+              $in: ["test"],
+            },
+          },
+        },
+        options: {
+          fields: undefined,
+          limit: 15,
+          offset: undefined,
+          withDeleted: undefined,
+          populate: ["tags"],
+        },
+      },
+      expect.any(Object)
+    )
+  })
+
+  it("should list and count the currencys with filters and relations", async function () {
+    const currencyService = mockContainer.resolve("currencyService")
+    const currencyRepository = mockContainer.resolve("currencyRepository")
+
+    const filters = {
+      tags: {
+        value: {
+          $in: ["test"],
+        },
+      },
+    }
+    const config = {
+      relations: ["tags"],
+    }
+
+    await currencyService.listAndCount(filters, config)
+
+    expect(currencyRepository.findAndCount).toHaveBeenCalledWith(
+      {
+        where: {
+          tags: {
+            value: {
+              $in: ["test"],
+            },
+          },
+        },
+        options: {
+          fields: undefined,
+          limit: 15,
+          offset: undefined,
+          withDeleted: undefined,
+          populate: ["tags"],
+        },
+      },
+      expect.any(Object)
+    )
+  })
+})

packages/pricing/src/services/currency.ts

@@ -0,0 +1,107 @@
+import { Context, DAL, FindConfig, PricingTypes } from "@medusajs/types"
+import {
+  InjectManager,
+  InjectTransactionManager,
+  MedusaContext,
+  ModulesSdkUtils,
+  retrieveEntity,
+} from "@medusajs/utils"
+import { Currency } from "@models"
+import { CurrencyRepository } from "@repositories"
+
+import { doNotForceTransaction, shouldForceTransaction } from "@medusajs/utils"
+
+type InjectedDependencies = {
+  currencyRepository: DAL.RepositoryService
+}
+
+export default class CurrencyService<TEntity extends Currency = Currency> {
+  protected readonly currencyRepository_: DAL.RepositoryService
+
+  constructor({ currencyRepository }: InjectedDependencies) {
+    this.currencyRepository_ = currencyRepository
+  }
+
+  @InjectManager("currencyRepository_")
+  async retrieve(
+    currencyCode: string,
+    config: FindConfig<PricingTypes.CurrencyDTO> = {},
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<TEntity> {
+    return (await retrieveEntity<Currency, PricingTypes.CurrencyDTO>({
+      id: currencyCode,
+      identifierColumn: "code",
+      entityName: Currency.name,
+      repository: this.currencyRepository_,
+      config,
+      sharedContext,
+    })) as TEntity
+  }
+
+  @InjectManager("currencyRepository_")
+  async list(
+    filters: PricingTypes.FilterableCurrencyProps = {},
+    config: FindConfig<PricingTypes.CurrencyDTO> = {},
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<TEntity[]> {
+    return (await this.currencyRepository_.find(
+      this.buildQueryForList(filters, config),
+      sharedContext
+    )) as TEntity[]
+  }
+
+  @InjectManager("currencyRepository_")
+  async listAndCount(
+    filters: PricingTypes.FilterableCurrencyProps = {},
+    config: FindConfig<PricingTypes.CurrencyDTO> = {},
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<[TEntity[], number]> {
+    return (await this.currencyRepository_.findAndCount(
+      this.buildQueryForList(filters, config),
+      sharedContext
+    )) as [TEntity[], number]
+  }
+
+  private buildQueryForList(
+    filters: PricingTypes.FilterableCurrencyProps = {},
+    config: FindConfig<PricingTypes.CurrencyDTO> = {}
+  ) {
+    const queryOptions = ModulesSdkUtils.buildQuery<Currency>(filters, config)
+
+    if (filters.code) {
+      queryOptions.where["code"] = { $in: filters.code }
+    }
+
+    return queryOptions
+  }
+
+  @InjectTransactionManager(shouldForceTransaction, "currencyRepository_")
+  async create(
+    data: PricingTypes.CreateCurrencyDTO[],
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<TEntity[]> {
+    return (await (this.currencyRepository_ as CurrencyRepository).create(
+      data,
+      sharedContext
+    )) as TEntity[]
+  }
+
+  @InjectTransactionManager(shouldForceTransaction, "currencyRepository_")
+  async update(
+    data: PricingTypes.UpdateCurrencyDTO[],
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<TEntity[]> {
+    return (await (this.currencyRepository_ as CurrencyRepository).update(
+      data,
+      sharedContext
+    )) as TEntity[]
+  }
+
+  @InjectTransactionManager(doNotForceTransaction, "currencyRepository_")
+  async delete(
+    ids: string[],
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<void> {
+    await this.currencyRepository_.delete(ids, sharedContext)
+  }
+}

packages/pricing/src/services/index.ts

@@ -0,0 +1,2 @@
+export { default as CurrencyService } from "./currency"
+export { default as PricingModuleService } from "./pricing-module"

packages/pricing/src/services/pricing-module.ts

@@ -0,0 +1,141 @@
+import {
+  Context,
+  DAL,
+  FindConfig,
+  InternalModuleDeclaration,
+  JoinerServiceConfig,
+  PricingTypes,
+} from "@medusajs/types"
+import { Currency } from "@models"
+import { CurrencyService } from "@services"
+
+import {
+  InjectManager,
+  InjectTransactionManager,
+  MedusaContext,
+} from "@medusajs/utils"
+
+import { shouldForceTransaction } from "@medusajs/utils"
+import { joinerConfig } from "../joiner-config"
+
+type InjectedDependencies = {
+  baseRepository: DAL.RepositoryService
+  currencyService: CurrencyService<any>
+}
+
+export default class PricingModuleService<TCurrency extends Currency = Currency>
+  implements PricingTypes.IPricingModuleService
+{
+  protected baseRepository_: DAL.RepositoryService
+  protected readonly currencyService_: CurrencyService<TCurrency>
+
+  constructor(
+    { baseRepository, currencyService }: InjectedDependencies,
+    protected readonly moduleDeclaration: InternalModuleDeclaration
+  ) {
+    this.baseRepository_ = baseRepository
+    this.currencyService_ = currencyService
+  }
+
+  __joinerConfig(): JoinerServiceConfig {
+    return joinerConfig
+  }
+
+  @InjectManager("baseRepository_")
+  async retrieveCurrency(
+    code: string,
+    config: FindConfig<PricingTypes.CurrencyDTO> = {},
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<PricingTypes.CurrencyDTO> {
+    const currency = await this.currencyService_.retrieve(
+      code,
+      config,
+      sharedContext
+    )
+
+    return this.baseRepository_.serialize<PricingTypes.CurrencyDTO>(currency, {
+      populate: true,
+    })
+  }
+
+  @InjectManager("baseRepository_")
+  async listCurrencies(
+    filters: PricingTypes.FilterableCurrencyProps = {},
+    config: FindConfig<PricingTypes.CurrencyDTO> = {},
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<PricingTypes.CurrencyDTO[]> {
+    const currencies = await this.currencyService_.list(
+      filters,
+      config,
+      sharedContext
+    )
+
+    return this.baseRepository_.serialize<PricingTypes.CurrencyDTO[]>(
+      currencies,
+      {
+        populate: true,
+      }
+    )
+  }
+
+  @InjectManager("baseRepository_")
+  async listAndCountCurrencies(
+    filters: PricingTypes.FilterableCurrencyProps = {},
+    config: FindConfig<PricingTypes.CurrencyDTO> = {},
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<[PricingTypes.CurrencyDTO[], number]> {
+    const [currencies, count] = await this.currencyService_.listAndCount(
+      filters,
+      config,
+      sharedContext
+    )
+
+    return [
+      await this.baseRepository_.serialize<PricingTypes.CurrencyDTO[]>(
+        currencies,
+        {
+          populate: true,
+        }
+      ),
+      count,
+    ]
+  }
+
+  @InjectTransactionManager(shouldForceTransaction, "baseRepository_")
+  async createCurrencies(
+    data: PricingTypes.CreateCurrencyDTO[],
+    @MedusaContext() sharedContext: Context = {}
+  ) {
+    const currencies = await this.currencyService_.create(data, sharedContext)
+
+    return this.baseRepository_.serialize<PricingTypes.CurrencyDTO[]>(
+      currencies,
+      {
+        populate: true,
+      }
+    )
+  }
+
+  @InjectTransactionManager(shouldForceTransaction, "baseRepository_")
+  async updateCurrencies(
+    data: PricingTypes.UpdateCurrencyDTO[],
+    @MedusaContext() sharedContext: Context = {}
+  ) {
+    const currencies = await this.currencyService_.update(data, sharedContext)
+
+    return this.baseRepository_.serialize<PricingTypes.CurrencyDTO[]>(
+      currencies,
+      {
+        populate: true,
+      }
+    )
+  }
+
+  @InjectTransactionManager(shouldForceTransaction, "baseRepository_")
+  async deleteCurrencies(
+    currencyCodes: string[],
+    @MedusaContext() sharedContext: Context = {}
+  ): Promise<void> {
+    await this.currencyService_.delete(currencyCodes, sharedContext)
+  }
+}

packages/pricing/src/types/index.ts

@@ -0,0 +1,5 @@
+import { Logger } from "@medusajs/types"
+
+export type InitializeModuleInjectableDependencies = {
+  logger?: Logger
+}