feat: Add emitEvent step + cleanup (#7643)

* feat: Add emitEvent step + cleanup

* fix typo

* fix typo

packages/core/core-flows/src/common/index.ts

@@ -1,6 +1,7 @@
 export * from "./steps/create-remote-links"
 export * from "./steps/dismiss-remote-links"
 export * from "./steps/remove-remote-links"
+export * from "./steps/emit-event"
 export * from "./steps/use-remote-query"
 export * from "./workflows/batch-links"
 export * from "./workflows/create-links"

packages/core/core-flows/src/common/steps/emit-event.ts

@@ -0,0 +1,41 @@
+import { composeMessage, ModuleRegistrationName } from "@medusajs/utils"
+import { createStep, StepExecutionContext } from "@medusajs/workflows-sdk"
+
+type Input = {
+  eventName: string
+  source: string
+  object: string
+  action?: string
+  options?: Record<string, any>
+  data: (
+    context: StepExecutionContext
+  ) => Promise<Record<any, any>> | Record<any, any>
+}
+
+export const emitEventStepId = "emit-event-step"
+export const emitEventStep = createStep(
+  emitEventStepId,
+  async (input: Input, context) => {
+    if (!input) {
+      return
+    }
+
+    const { container } = context
+
+    const eventBus = container.resolve(ModuleRegistrationName.EVENT_BUS)
+
+    const data_ =
+      typeof input.data === "function" ? await input.data(context) : input.data
+    const message = composeMessage(input.eventName, {
+      data: data_,
+      action: input.action ?? "",
+      object: input.object,
+      source: input.source,
+      options: input.options,
+      context,
+    })
+
+    await eventBus.emit([message])
+  },
+  async (data: void) => {}
+)

packages/core/core-flows/src/common/steps/release-event.ts

@@ -0,0 +1,20 @@
+import { ModuleRegistrationName } from "@medusajs/utils"
+import { createStep } from "@medusajs/workflows-sdk"
+
+export const releaseEventsStepId = "release-events-step"
+export const releaseEventsStep = createStep(
+  releaseEventsStepId,
+  async (
+    input: void,
+    {
+      container,
+      metadata: {
+        /* eventGroupId */
+      },
+    }
+  ) => {
+    const eventBus = container.resolve(ModuleRegistrationName.EVENT_BUS)
+    // await eventBus.release
+  },
+  async (data: void) => {}
+)