[ENG-9802] Users unable to create a NEW CEDAR metadata template, and existing templates not able to be viewed #791

- Ticket: [ENG-9802]
- Feature flag: n/a

## Summary of Changes

1. Fixed load of cedar pakcages.

Author: nsemets

src/@types/cedar.d.ts

@@ -0,0 +1,2 @@
+declare module 'cedar-artifact-viewer';
+declare module 'cedar-embeddable-editor';

src/app/features/metadata/components/cedar-template-form/cedar-template-form.component.html

@@ -54,23 +54,27 @@ <h3 class="text-lg text-red-500">{{ 'project.metadata.addMetadata.notPublishedTe
       </div>
     }
     <div class="cedar-editor-container">
-      @if (readonly()) {
-        <cedar-artifact-viewer
-          #cedarViewer
-          [config]="cedarViewerConfig"
-          [templateObject]="template().attributes.template"
-          [instanceObject]="formData()"
-        ></cedar-artifact-viewer>
+      @if (!cedarLoaded()) {
+        <osf-loading-spinner />
       } @else {
-        <cedar-embeddable-editor
-          #cedarEditor
-          [config]="cedarConfig"
-          [templateObject]="template().attributes.template"
-          [metadata]="formData()"
-          (change)="onCedarChange($event)"
-          (pointerover)="validateCedarMetadata()"
-          (keyup)="onCedarChange($event)"
-        ></cedar-embeddable-editor>
+        @if (readonly()) {
+          <cedar-artifact-viewer
+            #cedarViewer
+            [config]="cedarViewerConfig"
+            [templateObject]="template().attributes.template"
+            [instanceObject]="formData()"
+          ></cedar-artifact-viewer>
+        } @else {
+          <cedar-embeddable-editor
+            #cedarEditor
+            [config]="cedarConfig"
+            [templateObject]="template().attributes.template"
+            [metadata]="formData()"
+            (change)="onCedarChange($event)"
+            (pointerover)="validateCedarMetadata()"
+            (keyup)="onCedarChange($event)"
+          ></cedar-embeddable-editor>
+        }
       }
     </div>
 

src/app/features/metadata/components/cedar-template-form/cedar-template-form.component.spec.ts

@@ -1,7 +1,11 @@
+import { MockComponent } from 'ng-mocks';
+
+import { PLATFORM_ID } from '@angular/core';
 import { ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { CedarMetadataHelper } from '@osf/features/metadata/helpers';
 import { CedarMetadataDataTemplateJsonApi } from '@osf/features/metadata/models';
+import { LoadingSpinnerComponent } from '@osf/shared/components/loading-spinner/loading-spinner.component';
 
 import { CedarTemplateFormComponent } from './cedar-template-form.component';
 
@@ -16,7 +20,8 @@ describe('CedarTemplateFormComponent', () => {
 
   beforeEach(async () => {
     await TestBed.configureTestingModule({
-      imports: [CedarTemplateFormComponent, OSFTestingModule],
+      imports: [CedarTemplateFormComponent, OSFTestingModule, MockComponent(LoadingSpinnerComponent)],
+      providers: [{ provide: PLATFORM_ID, useValue: 'browser' }],
     }).compileComponents();
 
     fixture = TestBed.createComponent(CedarTemplateFormComponent);
@@ -75,10 +80,14 @@ describe('CedarTemplateFormComponent', () => {
     expect(emitSpy).toHaveBeenCalled();
   });
 
-  it('should initialize form data with empty metadata when no existing record', () => {
+  it('should initialize form data with empty metadata when no existing record', async () => {
     fixture.componentRef.setInput('existingRecord', null);
     fixture.detectChanges();
 
+    await (component as any).loadCedarLibraries();
+    (component as any).initializeCedar();
+    fixture.detectChanges();
+
     const expectedEmptyMetadata = CedarMetadataHelper.buildEmptyMetadata();
     expect(component.formData()).toEqual(expectedEmptyMetadata);
   });

src/app/features/metadata/components/cedar-template-form/cedar-template-form.component.ts

@@ -6,7 +6,7 @@ import { Tooltip } from 'primeng/tooltip';
 
 import { map, of } from 'rxjs';
 
-import { CommonModule } from '@angular/common';
+import { CommonModule, isPlatformBrowser } from '@angular/common';
 import {
   ChangeDetectionStrategy,
   Component,
@@ -16,6 +16,7 @@ import {
   inject,
   input,
   output,
+  PLATFORM_ID,
   signal,
   viewChild,
   ViewEncapsulation,
@@ -24,9 +25,7 @@ import { toSignal } from '@angular/core/rxjs-interop';
 import { ActivatedRoute } from '@angular/router';
 
 import { ENVIRONMENT } from '@core/provider/environment.provider';
-
-import 'cedar-artifact-viewer';
-import 'cedar-embeddable-editor';
+import { LoadingSpinnerComponent } from '@osf/shared/components/loading-spinner/loading-spinner.component';
 
 import { CEDAR_CONFIG, CEDAR_VIEWER_CONFIG } from '../../constants';
 import { CedarMetadataHelper } from '../../helpers';
@@ -39,7 +38,7 @@ import {
 
 @Component({
   selector: 'osf-cedar-template-form',
-  imports: [CommonModule, Button, TranslatePipe, Tooltip, Menu],
+  imports: [CommonModule, Button, TranslatePipe, Tooltip, Menu, LoadingSpinnerComponent],
   templateUrl: './cedar-template-form.component.html',
   styleUrl: './cedar-template-form.component.scss',
   schemas: [CUSTOM_ELEMENTS_SCHEMA],
@@ -66,11 +65,15 @@ export class CedarTemplateFormComponent {
 
   private route = inject(ActivatedRoute);
   readonly environment = inject(ENVIRONMENT);
+  private platformId = inject(PLATFORM_ID);
+  readonly cedarLoaded = signal<boolean>(false);
 
   readonly recordId = signal<string>('');
   readonly downloadUrl = signal<string>('');
   readonly schemaName = signal<string>('');
 
+  readonly fileGuid = toSignal(this.route.params.pipe(map((params) => params['fileGuid'])) ?? of(undefined));
+
   shareItems = [
     {
       label: 'files.detail.actions.share.email',
@@ -90,15 +93,15 @@ export class CedarTemplateFormComponent {
     effect(() => {
       const tpl = this.template();
       if (tpl?.attributes?.template) {
-        this.initializeCedar();
+        this.loadCedarLibraries().then(() => this.initializeCedar());
       }
     });
 
     effect(() => {
       const record = this.existingRecord();
       this.schemaName.set(record?.embeds?.template.data.attributes.schema_name || '');
       if (record) {
-        this.initializeCedar();
+        this.loadCedarLibraries().then(() => this.initializeCedar());
       }
     });
   }
@@ -123,7 +126,30 @@ export class CedarTemplateFormComponent {
     this.validateCedarMetadata();
   }
 
-  readonly fileGuid = toSignal(this.route.params.pipe(map((params) => params['fileGuid'])) ?? of(undefined));
+  private initializeFormData(): void {
+    const template = this.template()?.attributes?.template;
+    if (!template) return;
+    const metadata = this.existingRecord()?.attributes?.metadata;
+    if (this.existingRecord()) {
+      const structuredMetadata = CedarMetadataHelper.buildStructuredMetadata(metadata);
+      this.formData.set(structuredMetadata);
+    } else {
+      this.formData.set(CedarMetadataHelper.buildEmptyMetadata());
+    }
+  }
+
+  private async loadCedarLibraries(): Promise<void> {
+    if (!isPlatformBrowser(this.platformId) || this.cedarLoaded()) {
+      return;
+    }
+
+    try {
+      await Promise.all([import('cedar-artifact-viewer'), import('cedar-embeddable-editor')]);
+      this.cedarLoaded.set(true);
+    } catch {
+      this.cedarLoaded.set(false);
+    }
+  }
 
   downloadMetadadaRecord() {
     if (this.fileGuid()) {
@@ -173,19 +199,6 @@ export class CedarTemplateFormComponent {
       this.emitData.emit(finalData as CedarRecordDataBinding);
     }
   }
-
-  private initializeFormData(): void {
-    const template = this.template()?.attributes?.template;
-    if (!template) return;
-    const metadata = this.existingRecord()?.attributes?.metadata;
-    if (this.existingRecord()) {
-      const structuredMetadata = CedarMetadataHelper.buildStructuredMetadata(metadata);
-      this.formData.set(structuredMetadata);
-    } else {
-      this.formData.set(CedarMetadataHelper.buildEmptyMetadata());
-    }
-  }
-
   handleEmailShare(): void {
     const url = window.location.href;
     window.location.href = `mailto:?subject=${this.schemaName()}&body=${url}`;