templates aus listen erstellen

listify-api/src/audit/audit-log.types.ts

@@ -7,6 +7,7 @@ export type AuditAction =
   | 'user.token_refreshed'
   | 'user.onboarding_updated'
   | 'template.created'
+  | 'template.created_from_list'
   | 'template.updated'
   | 'template.deleted'
   | 'template.item_created'

listify-api/src/lists/lists.controller.ts

@@ -126,6 +126,17 @@ export class ListsController {
     return this.listsService.suggestItems(this.requireUserId(request), listId);
   }
 
+  @Post(':listId/template')
+  createTemplateFromList(
+    @Req() request: AuthenticatedRequest,
+    @Param('listId') listId: string,
+  ) {
+    return this.listsService.createTemplateFromList(
+      this.requireUserId(request),
+      listId,
+    );
+  }
+
   @Patch(':listId/items/:itemId')
   async updateItem(
     @Req() request: AuthenticatedRequest,

listify-api/src/lists/lists.module.ts

@@ -3,6 +3,8 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 import { AuditModule } from '../audit/audit.module';
 import { AuthModule } from '../auth/auth.module';
 import { UserEntity } from '../auth/user.entity';
+import { ListTemplateEntity } from '../list-templates/list-template.entity';
+import { ListTemplateItemEntity } from '../list-templates/list-template-item.entity';
 import { ListsController } from './lists.controller';
 import { ListRealtimeService } from './list-realtime.service';
 import { ListsService } from './lists.service';
@@ -19,6 +21,8 @@ import { UserListShareEntity } from './user-list-share.entity';
       UserListEntity,
       UserListItemEntity,
       UserListShareEntity,
+      ListTemplateEntity,
+      ListTemplateItemEntity,
     ]),
   ],
   controllers: [ListsController],

listify-api/src/lists/lists.service.spec.ts

@@ -4,6 +4,8 @@ import {
   ServiceUnavailableException,
 } from '@nestjs/common';
 import { UserEntity } from '../auth/user.entity';
+import { ListTemplateEntity } from '../list-templates/list-template.entity';
+import { ListTemplateItemEntity } from '../list-templates/list-template-item.entity';
 import { ListTemplate } from '../list-templates/list-template.types';
 import { InMemoryRepository } from '../testing/in-memory-repository';
 import { ListRealtimeService } from './list-realtime.service';
@@ -18,16 +20,24 @@ describe('ListsService', () => {
   const originalAgentId = process.env.MISTRAL_AGENT_ID;
   let service: ListsService;
   let listsRepository: InMemoryRepository<UserListEntity>;
+  let templatesRepository: InMemoryRepository<ListTemplateEntity>;
+  let templateItemsRepository: InMemoryRepository<ListTemplateItemEntity>;
   let usersRepository: InMemoryRepository<UserEntity>;
 
   beforeEach(() => {
     listsRepository = new InMemoryRepository<UserListEntity>();
+    templatesRepository = new InMemoryRepository<ListTemplateEntity>();
+    templateItemsRepository = new InMemoryRepository<ListTemplateItemEntity>();
     usersRepository = new InMemoryRepository<UserEntity>();
     service = new ListsService(
       listsRepository as never,
       new InMemoryRepository<UserListItemEntity>() as never,
       new InMemoryRepository<UserListShareEntity>() as never,
       usersRepository as never,
+      undefined,
+      undefined,
+      templatesRepository as never,
+      templateItemsRepository as never,
     );
     global.fetch = jest.fn();
   });
@@ -255,6 +265,93 @@ describe('ListsService', () => {
     await expect(service.listLists('user-1')).resolves.toHaveLength(1);
   });
 
+  it('creates a template from an accessible list', async () => {
+    const list = await service.createList('user-1', {
+      name: 'Sommerurlaub',
+      description: 'Packliste fuer das Meer',
+      kind: 'packing',
+    });
+    const withFirstItem = await service.addItem('user-1', list.id, {
+      title: 'Pass',
+      required: true,
+    });
+    const withSecondItem = await service.addItem('user-1', list.id, {
+      title: 'Sonnencreme',
+      notes: 'Reisegroesse',
+      quantity: 2,
+      required: false,
+    });
+    await service.updateItem(
+      'user-1',
+      list.id,
+      withFirstItem.items[0].id,
+      { checked: true },
+    );
+
+    const template = await service.createTemplateFromList(
+      'user-1',
+      withSecondItem.id,
+    );
+
+    expect(template.ownerId).toBe('user-1');
+    expect(template.name).toBe('Sommerurlaub');
+    expect(template.description).toBe('Packliste fuer das Meer');
+    expect(template.kind).toBe('packing');
+    expect(template.items).toEqual([
+      expect.objectContaining({
+        title: 'Pass',
+        required: true,
+        position: 0,
+      }),
+      expect.objectContaining({
+        title: 'Sonnencreme',
+        notes: 'Reisegroesse',
+        quantity: 2,
+        required: false,
+        position: 1,
+      }),
+    ]);
+    expect((template.items[0] as { checked?: unknown }).checked).toBeUndefined();
+    expect(await templatesRepository.find()).toHaveLength(1);
+  });
+
+  it('lets collaborators create their own template from a shared list', async () => {
+    await usersRepository.save({
+      id: 'user-2',
+      email: 'collaborator@example.com',
+      passwordHash: 'hash',
+      verified: true,
+      onboardingCompleted: false,
+      createdAt: new Date(),
+      updatedAt: new Date(),
+    });
+    const list = await service.createList('user-1', {
+      name: 'Team Einkauf',
+      kind: 'shopping',
+    });
+    await service.addItem('user-1', list.id, { title: 'Milch' });
+    await service.shareList('user-1', list.id, { userId: 'user-2' });
+
+    const template = await service.createTemplateFromList('user-2', list.id);
+
+    expect(template.ownerId).toBe('user-2');
+    expect(template.name).toBe('Team Einkauf');
+    expect(template.items.map((item) => item.title)).toEqual(['Milch']);
+  });
+
+  it('does not create templates from soft-deleted lists', async () => {
+    const list = await service.createList('user-1', {
+      name: 'Archiviert',
+      kind: 'todo',
+    });
+    await service.deleteList('user-1', list.id);
+
+    await expect(
+      service.createTemplateFromList('user-1', list.id),
+    ).rejects.toThrow(NotFoundException);
+    expect(await templatesRepository.find()).toHaveLength(0);
+  });
+
   it('does not allow users to access lists owned by other users', async () => {
     const list = await service.createList('user-1', {
       name: 'Private Liste',

listify-api/src/lists/lists.service.ts

@@ -10,6 +10,8 @@ import { InjectRepository } from '@nestjs/typeorm';
 import { randomUUID } from 'crypto';
 import { IsNull, Repository } from 'typeorm';
 import { AuditLogService } from '../audit/audit-log.service';
+import { ListTemplateEntity } from '../list-templates/list-template.entity';
+import { ListTemplateItemEntity } from '../list-templates/list-template-item.entity';
 import {
   ListTemplate,
   ListTemplateKind,
@@ -69,6 +71,12 @@ export class ListsService {
     private readonly auditLogService?: AuditLogService,
     @Optional()
     private readonly listRealtimeService?: ListRealtimeService,
+    @Optional()
+    @InjectRepository(ListTemplateEntity)
+    private readonly templatesRepository?: Repository<ListTemplateEntity>,
+    @Optional()
+    @InjectRepository(ListTemplateItemEntity)
+    private readonly templateItemsRepository?: Repository<ListTemplateItemEntity>,
   ) {}
 
   async createList(ownerId: string, createDto: CreateListDto): Promise<UserList> {
@@ -501,6 +509,56 @@ export class ListsService {
     return { suggestions };
   }
 
+  async createTemplateFromList(
+    ownerId: string,
+    listId: string,
+  ): Promise<ListTemplate> {
+    if (!this.templatesRepository || !this.templateItemsRepository) {
+      throw new ServiceUnavailableException(
+        'List template storage is not configured.',
+      );
+    }
+
+    const list = await this.findAccessibleList(ownerId, listId);
+    const template = this.templatesRepository.create({
+      id: randomUUID(),
+      ownerId,
+      name: list.name,
+      description: list.description,
+      kind: list.kind,
+      deletedAt: null,
+      items: list.items
+        .sort((left, right) => left.position - right.position)
+        .map((item, index) =>
+          this.templateItemsRepository!.create({
+            id: randomUUID(),
+            title: item.title,
+            notes: item.notes,
+            quantity: item.quantity,
+            required: item.required,
+            position: index,
+          }),
+        ),
+    });
+    const savedTemplate = await this.templatesRepository.save(template);
+
+    await this.auditLogService?.record({
+      actorUserId: ownerId,
+      action: 'template.created_from_list',
+      entityType: 'template',
+      entityId: savedTemplate.id,
+      metadata: {
+        sourceListId: list.id,
+        sourceListName: list.name,
+        name: savedTemplate.name,
+        kind: savedTemplate.kind,
+        itemCount: savedTemplate.items?.length ?? 0,
+      },
+    });
+
+    return this.toListTemplate(savedTemplate);
+  }
+
   private async findAccessibleList(
     ownerId: string,
     listId: string,
@@ -760,6 +818,30 @@ export class ListsService {
     };
   }
 
+  private toListTemplate(template: ListTemplateEntity): ListTemplate {
+    return {
+      id: template.id,
+      ownerId: template.ownerId,
+      name: template.name,
+      description: template.description ?? undefined,
+      kind: template.kind,
+      items: (template.items ?? [])
+        .sort((left, right) => left.position - right.position)
+        .map((item) => ({
+          id: item.id,
+          title: item.title,
+          notes: item.notes ?? undefined,
+          quantity: item.quantity ?? undefined,
+          required: item.required,
+          position: item.position,
+          createdAt: this.toIsoString(item.createdAt),
+          updatedAt: this.toIsoString(item.updatedAt),
+        })),
+      createdAt: this.toIsoString(template.createdAt),
+      updatedAt: this.toIsoString(template.updatedAt),
+    };
+  }
+
   private toIsoString(value?: Date): string {
     return (value ?? new Date()).toISOString();
   }

listify-client/src/app/lists/list-detail/list-detail.component.html

@@ -42,10 +42,26 @@
       <mat-card-header>
         <mat-card-title>Details</mat-card-title>
         @if (!isCreateMode()) {
-          <button mat-stroked-button type="button" (click)="showEditor() ? cancelEditing() : startEditing()">
-            <mat-icon aria-hidden="true">{{ showEditor() ? 'close' : 'edit' }}</mat-icon>
-            {{ showEditor() ? 'Abbrechen' : 'Bearbeiten' }}
-          </button>
+          <div class="detail-actions">
+            <button
+              mat-stroked-button
+              type="button"
+              [disabled]="creatingTemplate()"
+              (click)="createTemplateFromList()"
+            >
+              @if (creatingTemplate()) {
+                <mat-progress-spinner mode="indeterminate" diameter="18" />
+              } @else {
+                <mat-icon aria-hidden="true">content_copy</mat-icon>
+              }
+              Template
+            </button>
+
+            <button mat-stroked-button type="button" (click)="showEditor() ? cancelEditing() : startEditing()">
+              <mat-icon aria-hidden="true">{{ showEditor() ? 'close' : 'edit' }}</mat-icon>
+              {{ showEditor() ? 'Abbrechen' : 'Bearbeiten' }}
+            </button>
+          </div>
         }
       </mat-card-header>
 

listify-client/src/app/lists/list-detail/list-detail.component.ts

@@ -58,6 +58,7 @@ export class ListDetailComponent implements OnInit {
   protected readonly isCreateMode = signal(false);
   protected readonly loading = signal(true);
   protected readonly saving = signal(false);
+  protected readonly creatingTemplate = signal(false);
   protected readonly editing = signal(false);
   protected readonly addingItem = signal(false);
   protected readonly loadingSuggestions = signal(false);
@@ -210,6 +211,28 @@ export class ListDetailComponent implements OnInit {
       });
   }
 
+  protected createTemplateFromList(): void {
+    const listId = this.listId();
+
+    if (!listId || this.creatingTemplate()) {
+      return;
+    }
+
+    this.creatingTemplate.set(true);
+    this.listsService
+      .createTemplateFromList(listId)
+      .pipe(finalize(() => this.creatingTemplate.set(false)))
+      .subscribe({
+        next: (template) => {
+          this.snackBar.open('Template erstellt.', 'OK', { duration: 2500 });
+          void this.router.navigate(['/templates', template.id]);
+        },
+        error: (error: unknown) => {
+          this.snackBar.open(getAuthErrorMessage(error), 'OK', { duration: 5000 });
+        },
+      });
+  }
+
   protected loadSuggestions(): void {
     const listId = this.listId();
 

listify-client/src/app/lists/lists.service.ts

@@ -9,6 +9,7 @@ import {
   UpdateListRequest,
   UserList,
 } from './lists.models';
+import { ListTemplate } from '../templates/templates.models';
 
 @Injectable({ providedIn: 'root' })
 export class ListsService {
@@ -50,6 +51,10 @@ export class ListsService {
     );
   }
 
+  createTemplateFromList(listId: string): Observable<ListTemplate> {
+    return this.http.post<ListTemplate>(`${this.apiUrl}/${listId}/template`, {});
+  }
+
   updateItem(
     listId: string,
     itemId: string,