feat: add models package

packages/models/src/Domain/Syncable/File/FileMutator.ts

@@ -0,0 +1,33 @@
+import { ContentType } from '@standardnotes/common'
+import { SNNote } from '../Note/Note'
+import { FileContent } from './File'
+import { FileToNoteReference } from '../../Abstract/Reference/FileToNoteReference'
+import { ContenteReferenceType } from '../../Abstract/Reference/ContenteReferenceType'
+import { DecryptedItemMutator } from '../../Abstract/Item/Mutator/DecryptedItemMutator'
+
+export class FileMutator extends DecryptedItemMutator<FileContent> {
+  set name(newName: string) {
+    this.mutableContent.name = newName
+  }
+
+  set encryptionHeader(encryptionHeader: string) {
+    this.mutableContent.encryptionHeader = encryptionHeader
+  }
+
+  public addNote(note: SNNote): void {
+    const reference: FileToNoteReference = {
+      reference_type: ContenteReferenceType.FileToNote,
+      content_type: ContentType.Note,
+      uuid: note.uuid,
+    }
+
+    const references = this.mutableContent.references || []
+    references.push(reference)
+    this.mutableContent.references = references
+  }
+
+  public removeNote(note: SNNote): void {
+    const references = this.immutableItem.references.filter((ref) => ref.uuid !== note.uuid)
+    this.mutableContent.references = references
+  }
+}