chore: display function revision information

AMW_angular/io/src/app/settings/functions/function-edit.component.html

@@ -20,6 +20,19 @@ <h5 class="modal-title" id="editFunctionTitle">{{ getTitle() }}</h5>
          }"
       ></ngx-codemirror>
     </div>
+    <div class="mb-3">
+      <label class="form-label">Compare with history</label>
+      <div ngbDropdown>
+        <button class="btn btn-secondary dropdown-toggle" id="revisionDropdown" ngbDropdownToggle>
+          Select Revision
+        </button>
+        <ul ngbDropdownMenu aria-labelledby="revisionDropdown">
+          <li ngbDropdownItem *ngFor="let revision of revisions">
+            <a class="dropdown-item">{{ revision.displayName ?? 'Unnamed Revision' }}</a>
+          </li>
+        </ul>
+      </div>
+    </div>
   </div>
 </div>
 <div class="modal-footer">

AMW_angular/io/src/app/settings/functions/function-edit.component.ts

@@ -1,25 +1,33 @@
 import { Component, EventEmitter, inject, Input, Output } from '@angular/core';
 import { FormsModule } from '@angular/forms';
 import { NgbActiveModal } from '@ng-bootstrap/ng-bootstrap';
+import { CommonModule } from '@angular/common';
 import { AppFunction } from './appFunction';
 import { CodemirrorModule } from '@ctrl/ngx-codemirror';
 import { FunctionsService } from './functions.service';
+import {RevisionInformation} from "./revisionInformation";
+import { NgbDropdownModule } from '@ng-bootstrap/ng-bootstrap';
 
 @Component({
   selector: 'amw-function-edit',
   templateUrl: './function-edit.component.html',
   standalone: true,
-  imports: [FormsModule, CodemirrorModule],
+  imports: [FormsModule, CodemirrorModule, CommonModule, NgbDropdownModule],
 })
 export class FunctionEditComponent {
   @Input() function: AppFunction;
   @Input() canManage: boolean;
   @Output() saveFunction: EventEmitter<AppFunction> = new EventEmitter<AppFunction>();
 
   private functionsService = inject(FunctionsService);
+  public revisions: RevisionInformation[]= [];
 
   constructor(public activeModal: NgbActiveModal) {}
 
+  ngOnInit(): void {
+    this.loadRevisions(this.function.id);
+  }
+
   getTitle(): string {
     return this.function.id ? 'Edit function' : 'Add function';
   }
@@ -33,4 +41,13 @@ export class FunctionEditComponent {
     this.saveFunction.emit(this.function);
     this.activeModal.close();
   }
+
+  loadRevisions(functionId: number): void {
+    this.functionsService.getFunctionRevisions(functionId).subscribe(revisions => {
+      console.log('Revisions received from API:', revisions);  // Debugging the data
+      this.revisions = revisions;  // Ensure the revisions are set correctly
+      console.log('Revisions in component:', this.revisions);  // Log after setting to ensure it's correct
+    });
+  }
+
 }

AMW_angular/io/src/app/settings/functions/functions.service.ts

@@ -5,6 +5,7 @@ import { AppFunction } from './appFunction';
 import { Observable, startWith, Subject } from 'rxjs';
 import { toSignal } from '@angular/core/rxjs-interop';
 import { shareReplay, switchMap } from 'rxjs/operators';
+import {RevisionInformation} from "./revisionInformation";
 
 @Injectable({ providedIn: 'root' })
 export class FunctionsService extends BaseService {
@@ -31,10 +32,15 @@ export class FunctionsService extends BaseService {
   modifyFunction(newFunction: AppFunction): Observable<void> {
     return this.http.put<void>(`${this.getBaseUrl()}/functions`, newFunction);
   }
+
   deleteFunction(id: number): Observable<void> {
     return this.http.delete<void>(`${this.getBaseUrl()}/functions/${id}`);
   }
 
+  getFunctionRevisions(id: number): Observable<RevisionInformation[]> {
+    return this.http.get<RevisionInformation[]>(`${this.getBaseUrl()}/functions/${id}/revisions`);
+  }
+
   refreshData() {
     this.reload$.next([]);
   }

AMW_angular/io/src/app/settings/functions/revisionInformation.ts

@@ -0,0 +1,6 @@
+export interface RevisionInformation {
+  revision: number;
+  revisionDate: number;
+  userName: string;
+  displayName: string;
+}

AMW_rest/src/main/java/ch/mobi/itc/mobiliar/rest/functions/FunctionsRest.java

@@ -2,6 +2,7 @@
 
 import ch.puzzle.itc.mobiliar.business.globalfunction.boundary.GlobalFunctionsBoundary;
 import ch.puzzle.itc.mobiliar.business.globalfunction.entity.GlobalFunctionEntity;
+import ch.puzzle.itc.mobiliar.business.template.entity.RevisionInformation;
 import ch.puzzle.itc.mobiliar.common.exception.NotFoundException;
 import ch.puzzle.itc.mobiliar.common.exception.ValidationException;
 import io.swagger.annotations.Api;
@@ -71,4 +72,14 @@ public Response deleteGlobalFunction(@PathParam("id") int id) throws NotFoundExc
         globalFunctionsBoundary.deleteGlobalFunction(id);
         return Response.status(Response.Status.NO_CONTENT).build();
     }
+
+    @GET
+    @Path("/{id}/revisions")
+    @ApiOperation(value = "Get all revisions of a specific function")
+    public Response getFunctionRevisions(@PathParam("id") int id) {
+        // returns empty array if nothing is found; change this behaviour
+        // NotFoundException?
+        List<RevisionInformation> revisions = globalFunctionsBoundary.getFunctionRevisions(id);
+        return Response.ok(revisions).build();
+    }
 }