Implemented studio.createContentOfSaveFile()

theatre/studio/src/Studio.ts

@@ -57,6 +57,13 @@ export class Studio {
 
     this._attachToIncomingProjects()
     this.paneManager = new PaneManager(this)
+
+    /**
+     * @todo If studio.initialize() is not called within a few milliseconds,
+     * we should console.warn() the user that `@theatre/studio` is still in
+     * their bundle. This way we can avoid issues like
+     * [this](https://discord.com/channels/870988717190426644/892469755225710642/892479678797971486).
+     */
   }
 
   async initialize(opts?: Parameters<IStudio['initialize']>[0]) {
@@ -209,7 +216,7 @@ export class Studio {
     this._store.redo()
   }
 
-  createExportedStateOfProject(projectId: string): OnDiskState {
+  createContentOfSaveFile(projectId: string): OnDiskState {
-    return this._store.createExportedStateOfProject(projectId)
+    return this._store.createContentOfSaveFile(projectId)
   }
 }

theatre/studio/src/StudioStore/StudioStore.ts

@@ -280,9 +280,17 @@ export default class StudioStore {
     this._reduxStore.dispatch(studioActions.historic.redo())
   }
 
-  createExportedStateOfProject(projectId: string): OnDiskState {
+  createContentOfSaveFile(projectId: string): OnDiskState {
+    const projectState =
+      this._reduxStore.getState().$persistent.historic.innerState.coreByProject[
+        projectId
+      ]
+
+    if (!projectState) {
+      throw new Error(`Project ${projectId} has not been initialized.`)
+    }
+
     const revision = generateDiskStateRevision()
-    // let's assume projectId is already loaded
 
     this.tempTransaction(({stateEditors}) => {
       stateEditors.coreByProject.historic.revisionHistory.add({

theatre/studio/src/TheatreStudio.ts

@@ -301,6 +301,25 @@ export interface IStudio {
    * studio is present.
    */
   getStudioProject(): IProject
+
+  /**
+   * Creates a JSON object that contains the state of the project. You can use this
+   * to programmatically save the state of your projects to the storage system of your
+   * choice, rather than manually clicking on the "Export" button in the UI.
+   *
+   * @param projectId same projectId as in `core.getProject(projectId)`
+   *
+   * Usage:
+   * ```ts
+   * const projectId = "project"
+   * const json = studio.createContentOfSaveFile(projectId)
+   * const string = JSON.stringify(json)
+   * fetch(`/projects/${projectId}/state`, {method: 'POST', body: string}).then(() => {
+   *   console.log("Saved")
+   * })
+   * ```
+   */
+  createContentOfSaveFile(projectId: string): Record<string, unknown>
 }
 
 export default class TheatreStudio implements IStudio {
@@ -431,4 +450,8 @@ export default class TheatreStudio implements IStudio {
   destroyPane(paneId: string): void {
     return getStudio().paneManager.destroyPane(paneId)
   }
+
+  createContentOfSaveFile(projectId: string): Record<string, unknown> {
+    return getStudio().createContentOfSaveFile(projectId) as $IntentionalAny
+  }
 }

theatre/studio/src/panels/DetailPanel/ProjectDetails/ProjectDetails.tsx

@@ -35,7 +35,7 @@ const ProjectDetails: React.FC<{
 
   const exportProject = useCallback(() => {
     const str = JSON.stringify(
-      getStudio().createExportedStateOfProject(project.address.projectId),
+      getStudio().createContentOfSaveFile(project.address.projectId),
       null,
       2,
     )