moved dummy services to return ApiResult type, and Promise API instead of rxjs observable

ui/winstudentgoaltracker/src/app/mobile/pages/add-progress-event/add-progress-event.ts

@@ -61,24 +61,22 @@ export class AddProgressEvent {
   // Saves the progress event. On success, returns to the goal list.
   // On failure, displays the error message from the API.
   // *****************************************************************
-  onSave() {
+  async onSave() {
     this.error.set(null);
     this.saving.set(true);
 
-    this.saveService.save(this.studentId, this.goalId, this.notes().trim()).subscribe({
-      next: (result) => {
+    try {
+      const result = await this.saveService.save(this.studentId, this.goalId, this.notes().trim());
       this.saving.set(false);
       if (result.success) {
         this.router.navigate(['students', this.studentId, 'goals']);
       } else {
         this.error.set(result.message);
       }
-      },
-      error: (err: HttpErrorResponse) => {
+    } catch (err) {
       this.saving.set(false);
-        this.error.set(describeHttpError(err));
-      },
-    });
+      this.error.set(describeHttpError(err as HttpErrorResponse));
+    }
   }
 
   // ********************** Support Procedures ***********************

ui/winstudentgoaltracker/src/app/mobile/pages/home/home.ts

@@ -24,6 +24,10 @@ export class Home {
 
   protected readonly meta = signal<MobileHomeMeta | null>(null);
 
+
+  // TODO show this in the UI
+  public errorMessage = signal<String | null>(null);
+
   // ************************** Properties ***************************
 
   // ************************ Public Methods *************************
@@ -41,8 +45,16 @@ export class Home {
   // ********************** Support Procedures ***********************
 
   private loadMeta() {
-    this.metaService.getMeta().subscribe(data => {
-      this.meta.set(data);
+    this.metaService.getMeta().then(data => {
+
+      if (!data.success)
+      {
+        this.errorMessage.set(data.message);
+      }
+      else
+      {
+        this.meta.set(data.payload);
+      }
     });
   }
 }

ui/winstudentgoaltracker/src/app/mobile/pages/student-goals/student-goals.ts

@@ -25,6 +25,9 @@ export class StudentGoals {
   private readonly studentId = this.route.snapshot.paramMap.get('studentId') ?? '';
   protected readonly data = signal<StudentGoalSummary | null>(null);
 
+  // TODO show this in the UI
+  public errorMessage = signal<String | null>(null);
+
   // ************************** Properties ***************************
 
   // ************************ Public Methods *************************
@@ -56,8 +59,18 @@ export class StudentGoals {
   private loadGoals() {
     if (!this.studentId) return;
 
-    this.goalService.getGoalsForStudent(this.studentId).subscribe(result => {
-      this.data.set(result);
+    this.goalService.getGoalsForStudent(this.studentId).then(result => {
+
+      if (!result.success)
+      {
+        this.errorMessage.set(result.message)
+      }
+
+      else
+      {
+        this.data.set(result.payload);
+      }
+      
     });
   }
 }

ui/winstudentgoaltracker/src/app/shared/services/api.ts

@@ -19,6 +19,8 @@ export class Api {
   private readonly http = inject(HttpClient);
   private readonly base = environment.apiBaseUrl;
 
+  // ************************** Auth Endpoints **************************
+
   // Phase 1 — verify credentials, receive session token + program list
   login(request: LoginRequest): Observable<ResponseResult<LoginResponse>> {
     return this.http.post<ResponseResult<LoginResponse>>(
@@ -50,4 +52,7 @@ export class Api {
       request,
     );
   }
+
+  
+
 }

ui/winstudentgoaltracker/src/app/shared/services/dummy-mobile-home-meta.service.ts

@@ -1,5 +1,6 @@
 import { Injectable } from '@angular/core';
 import { Observable, of } from 'rxjs';
+import { ApiResult } from '../classes/api-result';
 
 // *****************************************************************
 // TODO: This dummy service should be replaced by MobileHomeMeta,
@@ -29,11 +30,13 @@ export class DummyMobileHomeMeta {
     // Replace with MobileHomeMeta service that calls
     // GET /api/mobile/home-meta (or similar).
     // *****************************************************************
-    getMeta(): Observable<MobileHomeMeta> {
-        return of({
+    async getMeta(): Promise<ApiResult<MobileHomeMeta | null>> {
+        var payload = {
             programName: 'WIN Program',
             userName: 'Polly Balsillie',
-        });
+        }
+
+        return ApiResult.ok(payload);
     }
 
     // ************************ Event Handlers *************************

ui/winstudentgoaltracker/src/app/shared/services/dummy-save-progress-event.service.ts

@@ -24,8 +24,8 @@ export class DummySaveProgressEvent {
     // TODO: DUMMY — Always returns success. Replace with
     // SaveProgressEvent calling POST /api/progress-events
     // *****************************************************************
-    save(studentId: string, goalId: string, content: string): Observable<ApiResult> {
-        return of(ApiResult.empty());
+    async save(studentId: string, goalId: string, content: string): Promise<ApiResult> {
+        return ApiResult.empty();
     }
 
     // ************************ Event Handlers *************************

ui/winstudentgoaltracker/src/app/shared/services/dummy-student-goal.service.ts

@@ -1,5 +1,5 @@
 import { Injectable } from '@angular/core';
-import { Observable, of } from 'rxjs';
+import { ApiResult } from '../classes/api-result';
 
 // *****************************************************************
 // TODO: This dummy service should be replaced by StudentGoalService,
@@ -84,8 +84,15 @@ export class DummyStudentGoalService {
     // Returns the student's identifier and their list of goals,
     // given a student ID.
     // *****************************************************************
-    getGoalsForStudent(studentId: string): Observable<StudentGoalSummary | null> {
-        return of(this.data[studentId] ?? null);
+    async getGoalsForStudent(studentId: string): Promise<ApiResult<StudentGoalSummary | null>> {
+        var goals = this.data[studentId] ?? null;
+        if (goals === null)
+        {
+            return ApiResult.fail('Student not found');
+        }
+
+        return ApiResult.ok(goals);
+
     }
 
     // ************************ Event Handlers *************************