Answer:1 Projection

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

@@ -7,6 +7,7 @@ import { TeacherCardComponent } from './component/teacher-card/teacher-card.comp
   selector: 'app-root',
   template: `
     <div class="grid grid-cols-3 gap-3">
+      <!--los componentes ya tienen dentro la configuracion para usar todos el card sin condiciones if-->
       <app-teacher-card />
       <app-student-card />
       <app-city-card />

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

@@ -1,9 +1,47 @@
-import { ChangeDetectionStrategy, Component } from '@angular/core';
+import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { CityStore } from '../../data-access/city.store';
+import {
+  FakeHttpService,
+  randomCity,
+} from '../../data-access/fake-http.service';
+import { CardComponent } from '../../ui/card/card.component';
+import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
 @Component({
   selector: 'app-city-card',
-  template: 'TODO City',
-  imports: [],
+  template: `
+    <app-card [list]="cities()" [itemTemplate]="cityItem" [onAdd]="addCity">
+      <p>Titulo para city</p>
+      <img ngSrc="assets/img/teacher.png" width="200" height="200" />
+    </app-card>
+
+    <!--Template para teacher que se mostrará dentro de app-card -->
+    <ng-template #cityItem let-item>
+      <app-list-item
+        [id]="item.id"
+        [name]="item.name"
+        (delete)="deleteCity($event)"></app-list-item>
+    </ng-template>
+  `,
+  imports: [CardComponent, ListItemComponent],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class CityCardComponent {}
+export class CityCardComponent {
+  //Inyectamos el store de cityes
+  private store = inject(CityStore);
+  private http = inject(FakeHttpService);
+
+  cities = this.store.cities;
+  citiesStore = this.store;
+
+  ngOnInit(): void {
+    this.http.fetchCities$.subscribe((t) => this.store.addAll(t));
+  }
+
+  addCity = () => {
+    this.citiesStore.addOne(randomCity());
+  };
+  deleteCity(id: number) {
+    this.citiesStore.deleteOne(id);
+  }
+}

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

@@ -4,37 +4,59 @@ import {
   inject,
   OnInit,
 } from '@angular/core';
-import { FakeHttpService } from '../../data-access/fake-http.service';
+import {
+  FakeHttpService,
+  randStudent,
+} from '../../data-access/fake-http.service';
 import { StudentStore } from '../../data-access/student.store';
-import { CardType } from '../../model/card.model';
 import { CardComponent } from '../../ui/card/card.component';
+import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
 @Component({
   selector: 'app-student-card',
   template: `
     <app-card
       [list]="students()"
-      [type]="cardType"
-      customClass="bg-light-green" />
+      [itemTemplate]="studentsItem"
+      [onAdd]="addStudent">
+      <p>Titulo para student</p>
+      <img ngSrc="assets/img/student.webp" width="200" height="200" />
+    </app-card>
+
+    <!--Template para teacher que se mostrará dentro de app-card -->
+    <ng-template #studentsItem let-item>
+      <app-list-item
+        [id]="item.id"
+        [name]="item.firstName"
+        (delete)="deleteStudent($event)"></app-list-item>
+    </ng-template>
   `,
-  styles: [
-    `
-      ::ng-deep .bg-light-green {
-        background-color: rgba(0, 250, 0, 0.1);
-      }
-    `,
-  ],
-  imports: [CardComponent],
+  // styles: [
+  //   `
+  //     ::ng-deep .bg-light-green {
+  //       background-color: rgba(0, 250, 0, 0.1);
+  //     }
+  //   `,
+  // ],
+  imports: [CardComponent, ListItemComponent],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class StudentCardComponent implements OnInit {
   private http = inject(FakeHttpService);
   private store = inject(StudentStore);
 
   students = this.store.students;
-  cardType = CardType.STUDENT;
+  studentsStore = this.store;
+  //cardType = CardType.STUDENT;
 
   ngOnInit(): void {
     this.http.fetchStudents$.subscribe((s) => this.store.addAll(s));
   }
+
+  addStudent = () => {
+    this.studentsStore.addOne(randStudent());
+  };
+  deleteStudent(id: number) {
+    this.studentsStore.deleteOne(id);
+  }
 }

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

@@ -1,34 +1,58 @@
 import { Component, inject, OnInit } from '@angular/core';
-import { FakeHttpService } from '../../data-access/fake-http.service';
+import {
+  FakeHttpService,
+  randTeacher,
+} from '../../data-access/fake-http.service';
 import { TeacherStore } from '../../data-access/teacher.store';
-import { CardType } from '../../model/card.model';
 import { CardComponent } from '../../ui/card/card.component';
+import { ListItemComponent } from '../../ui/list-item/list-item.component';
 
 @Component({
   selector: 'app-teacher-card',
   template: `
     <app-card
       [list]="teachers()"
-      [type]="cardType"
-      customClass="bg-light-red"></app-card>
+      [itemTemplate]="teacherItem"
+      [onAdd]="addTeacher">
+      <!--la img y el p, como están dentro del componente se visualizará en el ng-content del componente card-->
+      <p>Titulo para teacher</p>
+      <img ngSrc="assets/img/teacher.png" width="200" height="200" />
+    </app-card>
+
+    <!--Template para teacher que se mostrará dentro de app-card -->
+    <ng-template #teacherItem let-item>
+      <!--encargado de repetir los list-item es el card, encargado de decidir cómo se pinta es el teacher-card-->
+      <app-list-item
+        [id]="item.id"
+        [name]="item.firstName"
+        (delete)="deleteTeacher($event)"></app-list-item>
+    </ng-template>
   `,
-  styles: [
-    `
-      ::ng-deep .bg-light-red {
-        background-color: rgba(250, 0, 0, 0.1);
-      }
-    `,
-  ],
-  imports: [CardComponent],
+  // styles: [
+  //   `
+  //     ::ng-deep .bg-light-red {
+  //       background-color: rgba(250, 0, 0, 0.1);
+  //     }
+  //   `,
+  // ],
+  imports: [CardComponent, ListItemComponent],
 })
 export class TeacherCardComponent implements OnInit {
   private http = inject(FakeHttpService);
   private store = inject(TeacherStore);
 
   teachers = this.store.teachers;
-  cardType = CardType.TEACHER;
+  teacherStore = this.store;
+  // cardType = CardType.TEACHER;
 
   ngOnInit(): void {
     this.http.fetchTeachers$.subscribe((t) => this.store.addAll(t));
   }
+
+  addTeacher = () => {
+    this.teacherStore.addOne(randTeacher());
+  };
+  deleteTeacher(id: number) {
+    this.teacherStore.deleteOne(id);
+  }
 }

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

@@ -5,7 +5,7 @@ import { City } from '../model/city.model';
   providedIn: 'root',
 })
 export class CityStore {
-  private cities = signal<City[]>([]);
+  public cities = signal<City[]>([]);
 
   addAll(cities: City[]) {
     this.cities.set(cities);

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

@@ -1,58 +1,83 @@
-import { NgOptimizedImage } from '@angular/common';
-import { Component, inject, 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 { CommonModule, NgOptimizedImage } from '@angular/common';
+import { Component, input, TemplateRef } from '@angular/core';
 import { CardType } from '../../model/card.model';
 import { ListItemComponent } from '../list-item/list-item.component';
 
+//La template que tengo hay ahora mismo es poco reutilizable porque cuando queramos añadir otro tipo de card
+//tenemos que poner más condiciones de if y más imágenes en el img y añadir más condiciones de if en la funcion de addNewItem
+
+/*
+Esto se hace con:
+
+<ng-content> para contenido estático
+
+<ng-template> + ngTemplateOutlet para contenido dinámico
+*/
 @Component({
   selector: 'app-card',
   template: `
-    <div
-      class="flex w-fit flex-col gap-3 rounded-md border-2 border-black p-4"
-      [class]="customClass()">
-      @if (type() === CardType.TEACHER) {
+    <div class="flex w-fit flex-col gap-3 rounded-md border-2 border-black p-4">
+      <!--Eliminamos los if-->
+      <!-- @if (type() === CardType.TEACHER) {
         <img ngSrc="assets/img/teacher.png" width="200" height="200" />
       }
       @if (type() === CardType.STUDENT) {
         <img ngSrc="assets/img/student.webp" width="200" height="200" />
-      }
+      } -->
+      <!--ponermos un <ng-content>; contenido proyectado imagen-->
+      <ng-content>
+        <!-- ng-content; hueco donde el padre mete aqui html tal cual, en este caso las img que pasamos dentro del app-card cuando lo llamamos
+         en teacher, student o city (el img se "inyecta" dentro del ng-content)-->
+      </ng-content>
 
       <section>
         @for (item of list(); track item) {
-          <app-list-item
+          <!-- <app-list-item
             [name]="item.firstName"
             [id]="item.id"
-            [type]="type()"></app-list-item>
+            [type]="type()"></app-list-item> -->
+          <!--el ng-container lo que hace es en este caso 
+          repetir un template (la definida en el teacher, student y city) 
+          para cada elemento de la lista que pasemos al card (de esta forma el card no sabe nada por asi decirlo, solo 
+          sabe que tiene que representar una template de forma repetida-->
+          <ng-container
+            [ngTemplateOutlet]="itemTemplate()"
+            [ngTemplateOutletContext]="{ $implicit: item }"></ng-container>
         }
       </section>
 
       <button
         class="rounded-sm border border-blue-500 bg-blue-300 p-2"
-        (click)="addNewItem()">
+        (click)="onAdd()">
         Add
       </button>
     </div>
   `,
-  imports: [ListItemComponent, NgOptimizedImage],
+  imports: [CommonModule, ListItemComponent, NgOptimizedImage],
 })
 export class CardComponent {
-  private teacherStore = inject(TeacherStore);
-  private studentStore = inject(StudentStore);
+  //Input que permite que el padre decida como se ve cada item de la lista
+  //@Input() itemTemplate!: TemplateRef<any>;
+  //Usamos un input signal mejor -> en el ngContainer se llama con () por ser un signal:
+  readonly itemTemplate = input<TemplateRef<any> | null>(null);
+  //Input signal para recibir una funcion
+  readonly onAdd = input<() => void>();
+
+  // private teacherStore = inject(TeacherStore);
+  // private studentStore = inject(StudentStore);
 
   readonly list = input<any[] | null>(null);
-  readonly type = input.required<CardType>();
-  readonly customClass = input('');
+  // readonly type = input.required<CardType>();
+  // readonly customClass = input('');
 
   CardType = CardType;
 
-  addNewItem() {
-    const type = this.type();
-    if (type === CardType.TEACHER) {
-      this.teacherStore.addOne(randTeacher());
-    } else if (type === CardType.STUDENT) {
-      this.studentStore.addOne(randStudent());
-    }
-  }
+  // addNewItem() {
+  //   const type = this.type();
+  //   if (type === CardType.TEACHER) {
+  //     this.teacherStore.addOne(randTeacher());
+  //   } else if (type === CardType.STUDENT) {
+  //     this.studentStore.addOne(randStudent());
+  //   }
+  // }
 }

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

@@ -1,39 +1,40 @@
 import {
   ChangeDetectionStrategy,
   Component,
-  inject,
+  EventEmitter,
   input,
+  Output,
 } from '@angular/core';
-import { StudentStore } from '../../data-access/student.store';
-import { TeacherStore } from '../../data-access/teacher.store';
-import { CardType } from '../../model/card.model';
 
 @Component({
   selector: 'app-list-item',
   template: `
     <div class="border-grey-300 flex justify-between border px-2 py-1">
       {{ name() }}
-      <button (click)="delete(id())">
+      <button (click)="deleteItem()">
         <img class="h-5" src="assets/svg/trash.svg" />
       </button>
     </div>
   `,
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class ListItemComponent {
-  private teacherStore = inject(TeacherStore);
-  private studentStore = inject(StudentStore);
+  @Output() delete = new EventEmitter<number>();
+
+  // private teacherStore = inject(TeacherStore);
+  // private studentStore = inject(StudentStore);
 
   readonly id = input.required<number>();
   readonly name = input.required<string>();
-  readonly type = input.required<CardType>();
+  // readonly type = input.required<CardType>();
 
-  delete(id: number) {
-    const type = this.type();
+  deleteItem() {
+    this.delete.emit(this.id());
+    /*const type = this.type();
     if (type === CardType.TEACHER) {
       this.teacherStore.deleteOne(id);
     } else if (type === CardType.STUDENT) {
       this.studentStore.deleteOne(id);
-    }
+    }*/
   }
 }