Add set-project-dialogues-command and update migrate-scene-document

src/commands/set-project-dialogues-command.ts

@@ -0,0 +1,49 @@
+import { createOpaqueId } from "../core/ids";
+import {
+  cloneProjectDialogueLibrary,
+  type ProjectDialogueLibrary
+} from "../dialogues/project-dialogues";
+
+import type { EditorCommand } from "./command";
+
+interface SetProjectDialoguesCommandOptions {
+  label: string;
+  dialogues: ProjectDialogueLibrary;
+}
+
+export function createSetProjectDialoguesCommand(
+  options: SetProjectDialoguesCommandOptions
+): EditorCommand {
+  const nextDialogues = cloneProjectDialogueLibrary(options.dialogues);
+  let previousDialogues: ProjectDialogueLibrary | null = null;
+
+  return {
+    id: createOpaqueId("command"),
+    label: options.label,
+    execute(context) {
+      const currentProjectDocument = context.getProjectDocument();
+
+      if (previousDialogues === null) {
+        previousDialogues = cloneProjectDialogueLibrary(
+          currentProjectDocument.dialogues
+        );
+      }
+
+      context.setProjectDocument({
+        ...currentProjectDocument,
+        dialogues: cloneProjectDialogueLibrary(nextDialogues)
+      });
+    },
+    undo(context) {
+      if (previousDialogues === null) {
+        return;
+      }
+
+      const currentProjectDocument = context.getProjectDocument();
+      context.setProjectDocument({
+        ...currentProjectDocument,
+        dialogues: cloneProjectDialogueLibrary(previousDialogues)
+      });
+    }
+  };
+}