chore(): Handle medusa service base methods events (#9179)

* chore(): Handle medusa service base methods events

* cleanup

* cleanup

* fix import

* fix decorator order

* fixes

* apply default event emition

* fix binding

* fix binding

* align tests with new event emition

packages/core/utils/src/event-bus/message-aggregator.ts

@@ -15,6 +15,10 @@ export class MessageAggregator implements IMessageAggregator {
     this.messages = []
   }
 
+  count(): number {
+    return this.messages.length
+  }
+
   save(msg: Message | Message[]): void {
     if (!msg || (Array.isArray(msg) && msg.length === 0)) {
       return

packages/core/utils/src/event-bus/utils.ts

@@ -28,6 +28,25 @@ type ReturnType<TNames extends string[]> = {
   >}_DETACHED`]: `${KebabCase<K & string>}.detached`
 }
 
+/**
+ * Build a conventional event name from the object name and the action and the prefix if provided
+ * @param prefix
+ * @param objectName
+ * @param action
+ */
+export function buildModuleResourceEventName({
+  prefix,
+  objectName,
+  action,
+}: {
+  prefix?: string
+  objectName: string
+  action: string
+}): string {
+  const kebabCaseName = lowerCaseFirst(kebabCase(objectName))
+  return `${prefix ? `${prefix}.` : ""}${kebabCaseName}.${action}`
+}
+
 /**
  * From the given strings it will produce the event names accordingly.
  * the result will look like:
@@ -43,6 +62,7 @@ type ReturnType<TNames extends string[]> = {
  * }
  *
  * @param names
+ * @param prefix
  */
 export function buildEventNamesFromEntityName<TNames extends string[]>(
   names: TNames,
@@ -53,13 +73,15 @@ export function buildEventNamesFromEntityName<TNames extends string[]>(
   for (let i = 0; i < names.length; i++) {
     const name = names[i]
     const snakedCaseName = camelToSnakeCase(name).toUpperCase()
-    const kebabCaseName = lowerCaseFirst(kebabCase(name))
 
     for (const event of Object.values(CommonEvents) as string[]) {
       const upperCasedEvent = event.toUpperCase()
-      events[`${snakedCaseName}_${upperCasedEvent}`] = `${
-        prefix ? prefix + "." : ""
-      }${kebabCaseName}.${event}` as `${KebabCase<typeof name>}.${typeof event}`
+      events[`${snakedCaseName}_${upperCasedEvent}`] =
+        buildModuleResourceEventName({
+          prefix,
+          objectName: name,
+          action: event,
+        }) as `${KebabCase<typeof name>}.${typeof event}`
     }
   }