Issue #1893

Pushing for my partner on the project, as she was not added as a collaborator and couldn't make a PR.

Added functionality to DemoDataInitializerService:
    •    Reads demo_entities.json from the assets folder.
    •    Logs a message if the file is found or defaults to the existing hardcoded setup if not.
    •    Prepares for future insertion of JSON data into the database for scenario-specific demo customization.

Co-Authored-By: Mira Panjaitan <[email protected]>

src/app/core/demo-data/demo-data-initializer.service.spec.ts

@@ -1,5 +1,8 @@
 import { fakeAsync, TestBed, tick } from "@angular/core/testing";
-
+import {
+  HttpClientTestingModule,
+  HttpTestingController,
+} from "@angular/common/http/testing";
 import { DemoDataInitializerService } from "./demo-data-initializer.service";
 import { DemoDataService } from "./demo-data.service";
 import { DemoUserGeneratorService } from "../user/demo-user-generator.service";
@@ -32,6 +35,7 @@ describe("DemoDataInitializerService", () => {
   let mockLocalAuth: jasmine.SpyObj<LocalAuthService>;
   let sessionManager: jasmine.SpyObj<SessionManagerService>;
   let mockDialog: jasmine.SpyObj<MatDialog>;
+  let httpTestingController: HttpTestingController;
   let demoUserDBName: string;
   let adminDBName: string;
 
@@ -47,6 +51,7 @@ describe("DemoDataInitializerService", () => {
     sessionManager = jasmine.createSpyObj(["offlineLogin"]);
 
     TestBed.configureTestingModule({
+      imports: [HttpClientTestingModule],
       providers: [
         DemoDataInitializerService,
         LoginStateSubject,
@@ -59,19 +64,59 @@ describe("DemoDataInitializerService", () => {
       ],
     });
     service = TestBed.inject(DemoDataInitializerService);
+    httpTestingController = TestBed.inject(HttpTestingController);
   });
 
   afterEach(async () => {
     localStorage.clear();
     const tmpDB = new PouchDatabase();
     await tmpDB.initInMemoryDB(demoUserDBName).destroy();
     await tmpDB.initInMemoryDB(adminDBName).destroy();
+    httpTestingController.verify();
   });
 
   it("should be created", () => {
     expect(service).toBeTruthy();
   });
 
+  it("should load demo_entities.json if available", fakeAsync(() => {
+    const mockEntities = {
+      docs: [
+        { _id: "Config:CONFIG_ENTITY", otherField: "xyz" },
+        { _id: "User:USER_ENTITY", username: "demoUser", role: "admin" },
+      ],
+    };
+
+    service.run();
+
+    const req = httpTestingController.expectOne("assets/demo_entities.json");
+    expect(req.request.method).toBe("GET");
+
+    req.flush(mockEntities);
+
+    tick();
+
+    expect(console.log).toHaveBeenCalledWith(
+      "Loaded demo_entities.json:",
+      mockEntities,
+    );
+  }));
+
+  it("should proceed without demo_entities.json if not available", fakeAsync(() => {
+    service.run();
+
+    const req = httpTestingController.expectOne("assets/demo_entities.json");
+    expect(req.request.method).toBe("GET");
+
+    req.error(new ErrorEvent("404 Not Found"), { status: 404 });
+
+    tick();
+
+    expect(console.log).toHaveBeenCalledWith(
+      "No demo_entities.json found, proceeding with default demo setup.",
+    );
+  }));
+
   it("should save the default users", () => {
     service.run();
 

src/app/core/demo-data/demo-data-initializer.service.ts

@@ -14,6 +14,7 @@ import { LoginState } from "../session/session-states/login-state.enum";
 import { LoginStateSubject, SessionType } from "../session/session-type";
 import memory from "pouchdb-adapter-memory";
 import PouchDB from "pouchdb-browser";
+import { HttpClient } from "@angular/common/http";
 
 /**
  * This service handles everything related to the demo-mode
@@ -46,6 +47,7 @@ export class DemoDataInitializerService {
     private database: Database,
     private loginState: LoginStateSubject,
     private sessionInfo: SessionSubject,
+    private http: HttpClient,
   ) {}
 
   async run() {
@@ -62,13 +64,35 @@ export class DemoDataInitializerService {
 
     this.localAuthService.saveUser(this.normalUser);
     this.localAuthService.saveUser(this.adminUser);
+
     await this.sessionManager.offlineLogin(this.normalUser);
+
+    // Load and parse the demo_entities.json file before publishing demo data
+    const demoDataFromJson = await this.loadDemoEntities();
+    if (demoDataFromJson?.docs) {
+      console.log("Loaded demo_entities.json:", demoDataFromJson);
+    } else {
+      console.log(
+        "No demo_entities.json found, proceeding with default demo setup.",
+      );
+    }
+
     await this.demoDataService.publishDemoData();
 
     dialogRef.close();
     this.syncDatabaseOnUserChange();
   }
 
+  private async loadDemoEntities(): Promise<any> {
+    try {
+      // Adjust the file name if you plan to have scenario-specific variants
+      return await this.http.get("assets/demo_entities.json").toPromise();
+    } catch (error) {
+      // It's okay if the file doesn't exist; proceed with defaults
+      return null;
+    }
+  }
+
   private syncDatabaseOnUserChange() {
     this.loginState.subscribe((state) => {
       if (

src/assets/demo_entities.json

@@ -0,0 +1,27 @@
+{
+    "docs": [
+      {
+        "_id": "Config:NOTE",
+        "subject": "Weekly Meeting Notes",
+        "text": "Summary of weekly staff meeting.",
+        "date": "2024-12-01",
+        "authors": ["User:1"],
+        "category": "Education",
+        "warningLevel": "INFO"
+      },
+      {
+        "_id": "Child:1",
+        "name": "John Doe",
+        "gender": "Male",
+        "admissionDate": "2024-01-01",
+        "schoolId": "School:1"
+      },
+      {
+        "_id": "School:1",
+        "name": "Springfield High School",
+        "language": "English",
+        "privateSchool": false
+      }
+    ]
+  }
+