feat(prduct, utils, types): Create soft delete pattern for link module (#4649)

* feat(prouct, utils, types): Create soft delete pattern for link module

* add comment

* add comment

* finalise

* remove linkable keys

* cleanup and tests

* cleanup

* add some comments and renaming

* re work

* fix tests

---------

Co-authored-by: Riqwan Thamir <rmthamir@gmail.com>

packages/utils/src/dal/mikro-orm/utils.ts

@@ -0,0 +1,54 @@
+import { SoftDeletableFilterKey } from "./mikro-orm-soft-deletable-filter"
+
+export const mikroOrmUpdateDeletedAtRecursively = async <
+  T extends object = any
+>(
+  manager: any,
+  entities: (T & { id: string; deleted_at?: string | Date | null })[],
+  value: Date | null
+) => {
+  for (const entity of entities) {
+    if (!("deleted_at" in entity)) continue
+
+    entity.deleted_at = value
+
+    const relations = manager
+      .getDriver()
+      .getMetadata()
+      .get(entity.constructor.name).relations
+
+    const relationsToCascade = relations.filter((relation) =>
+      relation.cascade.includes("soft-remove" as any)
+    )
+
+    for (const relation of relationsToCascade) {
+      let collectionRelation = entity[relation.name]
+
+      if (!collectionRelation.isInitialized()) {
+        await collectionRelation.init()
+      }
+
+      const relationEntities = await collectionRelation.getItems({
+        filters: {
+          [SoftDeletableFilterKey]: {
+            withDeleted: true,
+          },
+        },
+      })
+
+      await mikroOrmUpdateDeletedAtRecursively(manager, relationEntities, value)
+    }
+
+    await manager.persist(entity)
+  }
+}
+
+export const mikroOrmSerializer = async <TOutput extends object>(
+  data: any,
+  options?: any
+): Promise<TOutput> => {
+  options ??= {}
+  const { serialize } = await import("@mikro-orm/core")
+  const result = serialize(data, options)
+  return result as unknown as Promise<TOutput>
+}