Answer:1 - straightforward, no usage of ngTemplateOutlet

README.md

@@ -5,6 +5,7 @@
 <p align='center' style='font-weight:bold'>Collection of Angular challenges</p>
 
 <br>
+adsfsadfasd
 
 ## Intro
 

apps/angular/1-projection/src/app/component/city-card/city-card.component.ts

@@ -1,12 +1,54 @@
-import { Component, OnInit } from '@angular/core';
+import { Component, OnInit, computed, inject } from '@angular/core';
+import { CityStore } from '../../data-access/city.store';
+import {
+  FakeHttpService,
+  randomCity,
+} from '../../data-access/fake-http.service';
+import { CardListItem } from '../../model/card.model';
+import { CardComponent } from '../../ui/card/card.component';
 
 @Component({
   selector: 'app-city-card',
-  template: 'TODO City',
-  imports: [],
+  template: `
+    <app-card
+      [list]="cityListItems()"
+      class="bg-light-green"
+      (addNewItemEvent)="handleAddNewItemEvent()"
+      (deleteItemEvent)="handleDeleteItemEvent($event)">
+      <div card-img>
+        <img src="assets/img/city.png" width="200px" />
+      </div>
+    </app-card>
+  `,
+  styles: [
+    `
+      .bg-light-green {
+        background-color: rgba(0, 250, 0, 0.1);
+      }
+    `,
+  ],
+  imports: [CardComponent],
 })
 export class CityCardComponent implements OnInit {
-  constructor() {}
+  private http = inject(FakeHttpService);
+  private store = inject(CityStore);
 
-  ngOnInit(): void {}
+  cityListItems = computed<CardListItem[]>(() =>
+    this.store.cities().map((city) => ({
+      name: city.name,
+      id: city.id,
+    })),
+  );
+
+  ngOnInit(): void {
+    this.http.fetchCities$.subscribe((e) => this.store.addAll(e));
+  }
+
+  handleAddNewItemEvent() {
+    this.store.addOne(randomCity());
+  }
+
+  handleDeleteItemEvent(id: number) {
+    this.store.deleteOne(id);
+  }
 }

apps/angular/1-projection/src/app/component/student-card/student-card.component.ts

@@ -1,39 +1,56 @@
-import { Component, OnInit } from '@angular/core';
-import { FakeHttpService } from '../../data-access/fake-http.service';
+import { Component, OnInit, computed, inject } from '@angular/core';
+import {
+  FakeHttpService,
+  randStudent,
+} from '../../data-access/fake-http.service';
 import { StudentStore } from '../../data-access/student.store';
-import { CardType } from '../../model/card.model';
-import { Student } from '../../model/student.model';
+import { CardListItem } from '../../model/card.model';
 import { CardComponent } from '../../ui/card/card.component';
 
 @Component({
   selector: 'app-student-card',
   template: `
     <app-card
-      [list]="students"
-      [type]="cardType"
-      customClass="bg-light-green"></app-card>
+      [list]="studentListItems()"
+      class="bg-light-green"
+      (addNewItemEvent)="handleAddNewItemEvent()"
+      (deleteItemEvent)="handleDeleteItemEvent($event)">
+      <div card-img>
+        <img src="assets/img/student.webp" width="200px" />
+      </div>
+    </app-card>
   `,
   styles: [
     `
-      ::ng-deep .bg-light-green {
+      .bg-light-green {
         background-color: rgba(0, 250, 0, 0.1);
       }
     `,
   ],
   imports: [CardComponent],
 })
 export class StudentCardComponent implements OnInit {
-  students: Student[] = [];
-  cardType = CardType.STUDENT;
+  private http = inject(FakeHttpService);
+  private store = inject(StudentStore);
 
-  constructor(
-    private http: FakeHttpService,
-    private store: StudentStore,
-  ) {}
+  students = this.store.students;
+
+  studentListItems = computed<CardListItem[]>(() =>
+    this.store.students().map((student) => ({
+      name: student.firstName,
+      id: student.id,
+    })),
+  );
 
   ngOnInit(): void {
     this.http.fetchStudents$.subscribe((s) => this.store.addAll(s));
+  }
+
+  handleAddNewItemEvent() {
+    this.store.addOne(randStudent());
+  }
 
-    this.store.students$.subscribe((s) => (this.students = s));
+  handleDeleteItemEvent(id: number) {
+    this.store.deleteOne(id);
   }
 }

apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts

@@ -1,39 +1,53 @@
-import { Component, OnInit } from '@angular/core';
-import { FakeHttpService } from '../../data-access/fake-http.service';
+import { Component, OnInit, computed, inject } from '@angular/core';
+import {
+  FakeHttpService,
+  randTeacher,
+} from '../../data-access/fake-http.service';
 import { TeacherStore } from '../../data-access/teacher.store';
-import { CardType } from '../../model/card.model';
-import { Teacher } from '../../model/teacher.model';
+import { CardListItem } from '../../model/card.model';
 import { CardComponent } from '../../ui/card/card.component';
 
 @Component({
   selector: 'app-teacher-card',
   template: `
     <app-card
-      [list]="teachers"
-      [type]="cardType"
-      customClass="bg-light-red"></app-card>
+      [list]="teacherListItems()"
+      class="bg-light-red"
+      (addNewItemEvent)="handleAddNewItemEvent()"
+      (deleteItemEvent)="handleDeleteItemEvent($event)">
+      <div card-img>
+        <img src="assets/img/teacher.png" width="200px" />
+      </div>
+    </app-card>
   `,
   styles: [
     `
-      ::ng-deep .bg-light-red {
+      .bg-light-red {
         background-color: rgba(250, 0, 0, 0.1);
       }
     `,
   ],
   imports: [CardComponent],
 })
 export class TeacherCardComponent implements OnInit {
-  teachers: Teacher[] = [];
-  cardType = CardType.TEACHER;
+  private http = inject(FakeHttpService);
+  private store = inject(TeacherStore);
 
-  constructor(
-    private http: FakeHttpService,
-    private store: TeacherStore,
-  ) {}
+  teacherListItems = computed<CardListItem[]>(() =>
+    this.store
+      .teachers()
+      .map((teacher) => ({ name: teacher.firstName, id: teacher.id })),
+  );
 
   ngOnInit(): void {
     this.http.fetchTeachers$.subscribe((t) => this.store.addAll(t));
+  }
+
+  handleAddNewItemEvent() {
+    this.store.addOne(randTeacher());
+  }
 
-    this.store.teachers$.subscribe((t) => (this.teachers = t));
+  handleDeleteItemEvent(id: number) {
+    this.store.deleteOne(id);
   }
 }

apps/angular/1-projection/src/app/data-access/city.store.ts

@@ -1,23 +1,21 @@
-import { Injectable } from '@angular/core';
-import { BehaviorSubject } from 'rxjs';
+import { Injectable, signal } from '@angular/core';
 import { City } from '../model/city.model';
 
 @Injectable({
   providedIn: 'root',
 })
 export class CityStore {
-  private cities = new BehaviorSubject<City[]>([]);
-  cities$ = this.cities.asObservable();
+  public cities = signal<City[]>([]);
 
   addAll(cities: City[]) {
-    this.cities.next(cities);
+    this.cities.set(cities);
   }
 
-  addOne(student: City) {
-    this.cities.next([...this.cities.value, student]);
+  addOne(city: City) {
+    this.cities.set([...this.cities(), city]);
   }
 
   deleteOne(id: number) {
-    this.cities.next(this.cities.value.filter((s) => s.id !== id));
+    this.cities.set(this.cities().filter((s) => s.id !== id));
   }
 }

apps/angular/1-projection/src/app/data-access/student.store.ts

@@ -1,23 +1,21 @@
-import { Injectable } from '@angular/core';
-import { BehaviorSubject } from 'rxjs';
+import { Injectable, signal } from '@angular/core';
 import { Student } from '../model/student.model';
 
 @Injectable({
   providedIn: 'root',
 })
 export class StudentStore {
-  private students = new BehaviorSubject<Student[]>([]);
-  students$ = this.students.asObservable();
+  public students = signal<Student[]>([]);
 
   addAll(students: Student[]) {
-    this.students.next(students);
+    this.students.set(students);
   }
 
   addOne(student: Student) {
-    this.students.next([...this.students.value, student]);
+    this.students.set([...this.students(), student]);
   }
 
   deleteOne(id: number) {
-    this.students.next(this.students.value.filter((s) => s.id !== id));
+    this.students.set(this.students().filter((s) => s.id !== id));
   }
 }

apps/angular/1-projection/src/app/data-access/teacher.store.ts

@@ -1,23 +1,21 @@
-import { Injectable } from '@angular/core';
-import { BehaviorSubject } from 'rxjs';
+import { Injectable, signal } from '@angular/core';
 import { Teacher } from '../model/teacher.model';
 
 @Injectable({
   providedIn: 'root',
 })
 export class TeacherStore {
-  private teachers = new BehaviorSubject<Teacher[]>([]);
-  teachers$ = this.teachers.asObservable();
+  public teachers = signal<Teacher[]>([]);
 
   addAll(teachers: Teacher[]) {
-    this.teachers.next(teachers);
+    this.teachers.set(teachers);
   }
 
   addOne(teacher: Teacher) {
-    this.teachers.next([...this.teachers.value, teacher]);
+    this.teachers.set([...this.teachers(), teacher]);
   }
 
   deleteOne(id: number) {
-    this.teachers.next(this.teachers.value.filter((t) => t.id !== id));
+    this.teachers.set(this.teachers().filter((t) => t.id !== id));
   }
 }

apps/angular/1-projection/src/app/model/card.model.ts

@@ -3,3 +3,8 @@ export enum CardType {
   STUDENT,
   CITY,
 }
+
+export interface CardListItem {
+  name: string;
+  id: number;
+}

apps/angular/1-projection/src/app/ui/card/card.component.ts

@@ -1,60 +1,39 @@
-import { NgFor, NgIf } from '@angular/common';
-import { Component, Input } from '@angular/core';
-import { randStudent, randTeacher } from '../../data-access/fake-http.service';
-import { StudentStore } from '../../data-access/student.store';
-import { TeacherStore } from '../../data-access/teacher.store';
-import { CardType } from '../../model/card.model';
+import { Component, input, output } from '@angular/core';
+import { CardListItem } from '../../model/card.model';
 import { ListItemComponent } from '../list-item/list-item.component';
 
 @Component({
   selector: 'app-card',
   template: `
-    <div
-      class="flex w-fit flex-col gap-3 rounded-md border-2 border-black p-4"
-      [class]="customClass">
-      <img
-        *ngIf="type === CardType.TEACHER"
-        src="assets/img/teacher.png"
-        width="200px" />
-      <img
-        *ngIf="type === CardType.STUDENT"
-        src="assets/img/student.webp"
-        width="200px" />
-
-      <section>
+    <ng-content select="[card-img]"></ng-content>
+    <section>
+      @for (item of list(); track $index) {
         <app-list-item
-          *ngFor="let item of list"
-          [name]="item.firstName"
+          [name]="item.name"
           [id]="item.id"
-          [type]="type"></app-list-item>
-      </section>
-
-      <button
-        class="rounded-sm border border-blue-500 bg-blue-300 p-2"
-        (click)="addNewItem()">
-        Add
-      </button>
-    </div>
+          (deleteItemEvent)="handleDeleteItemEvent($event)" />
+      }
+    </section>
+    <button
+      class="rounded-sm border border-blue-500 bg-blue-300 p-2"
+      (click)="addNewItem()">
+      Add
+    </button>
   `,
-  imports: [NgIf, NgFor, ListItemComponent],
+  imports: [ListItemComponent],
+  host: {
+    class: 'border-2 border-black rounded-md p-4 w-fit flex flex-col gap-3',
+  },
 })
 export class CardComponent {
-  @Input() list: any[] | null = null;
-  @Input() type!: CardType;
-  @Input() customClass = '';
-
-  CardType = CardType;
-
-  constructor(
-    private teacherStore: TeacherStore,
-    private studentStore: StudentStore,
-  ) {}
+  list = input<CardListItem[]>([]);
+  deleteItemEvent = output<number>();
+  addNewItemEvent = output<void>();
 
   addNewItem() {
-    if (this.type === CardType.TEACHER) {
-      this.teacherStore.addOne(randTeacher());
-    } else if (this.type === CardType.STUDENT) {
-      this.studentStore.addOne(randStudent());
-    }
+    this.addNewItemEvent.emit();
+  }
+  handleDeleteItemEvent(id: number) {
+    this.deleteItemEvent.emit(id);
   }
 }