feat(projection): refactor card component using slots

Author: Luka288

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

@@ -1,10 +1,14 @@
+import { NgOptimizedImage } from '@angular/common';
 import {
   ChangeDetectionStrategy,
   Component,
   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';
@@ -15,7 +19,24 @@ import { CardComponent } from '../../ui/card/card.component';
     <app-card
       [list]="students()"
       [type]="cardType"
-      customClass="bg-light-green" />
+      customClass="bg-light-green">
+      <div card-header class="flex flex-col items-center">
+        <img
+          ngSrc="assets/img/student.webp"
+          width="200"
+          height="200"
+          alt="Students list view banner"
+          priority />
+      </div>
+
+      <div card-action>
+        <button
+          class="rounded-sm border border-blue-500 bg-blue-300 p-2"
+          (click)="addNew()">
+          Add
+        </button>
+      </div>
+    </app-card>
   `,
   styles: [
     `
@@ -24,10 +45,12 @@ import { CardComponent } from '../../ui/card/card.component';
       }
     `,
   ],
-  imports: [CardComponent],
+  imports: [CardComponent, NgOptimizedImage],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class StudentCardComponent implements OnInit {
+  private readonly studentStore = inject(StudentStore);
+
   private http = inject(FakeHttpService);
   private store = inject(StudentStore);
 
@@ -37,4 +60,8 @@ export class StudentCardComponent implements OnInit {
   ngOnInit(): void {
     this.http.fetchStudents$.subscribe((s) => this.store.addAll(s));
   }
+
+  addNew(): void {
+    this.studentStore.addOne(randStudent());
+  }
 }

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

@@ -1,16 +1,29 @@
+import { NgOptimizedImage } from '@angular/common';
 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';
 
 @Component({
   selector: 'app-teacher-card',
   template: `
-    <app-card
-      [list]="teachers()"
-      [type]="cardType"
-      customClass="bg-light-red"></app-card>
+    <app-card [list]="teachers()" [type]="cardType" customClass="bg-light-red">
+      <div card-header class="flex flex-col items-center">
+        <img ngSrc="assets/img/teacher.png" width="200" height="200" alt="" />
+      </div>
+
+      <div card-action>
+        <button
+          class="rounded-sm border border-blue-500 bg-blue-300 p-2"
+          (click)="addNew()">
+          Add
+        </button>
+      </div>
+    </app-card>
   `,
   styles: [
     `
@@ -19,9 +32,11 @@ import { CardComponent } from '../../ui/card/card.component';
       }
     `,
   ],
-  imports: [CardComponent],
+  imports: [CardComponent, NgOptimizedImage],
 })
 export class TeacherCardComponent implements OnInit {
+  private readonly teacherStore = inject(TeacherStore);
+
   private http = inject(FakeHttpService);
   private store = inject(TeacherStore);
 
@@ -31,4 +46,8 @@ export class TeacherCardComponent implements OnInit {
   ngOnInit(): void {
     this.http.fetchTeachers$.subscribe((t) => this.store.addAll(t));
   }
+
+  addNew(): void {
+    this.teacherStore.addOne(randTeacher());
+  }
 }

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

@@ -1,8 +1,4 @@
-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 { Component, input } from '@angular/core';
 import { CardType } from '../../model/card.model';
 import { ListItemComponent } from '../list-item/list-item.component';
 
@@ -12,12 +8,7 @@ import { ListItemComponent } from '../list-item/list-item.component';
     <div
       class="flex w-fit flex-col gap-3 rounded-md border-2 border-black p-4"
       [class]="customClass()">
-      @if (type() === CardType.TEACHER) {
-        <img ngSrc="assets/img/teacher.png" width="200" height="200" alt="" />
-      }
-      @if (type() === CardType.STUDENT) {
-        <img ngSrc="assets/img/student.webp" width="200" height="200" alt="" />
-      }
+      <ng-content select="[card-header]"></ng-content>
 
       <section>
         @for (item of list(); track item) {
@@ -28,31 +19,15 @@ import { ListItemComponent } from '../list-item/list-item.component';
         }
       </section>
 
-      <button
-        class="rounded-sm border border-blue-500 bg-blue-300 p-2"
-        (click)="addNewItem()">
-        Add
-      </button>
+      <ng-content select="[card-action]"></ng-content>
     </div>
   `,
-  imports: [ListItemComponent, NgOptimizedImage],
+  imports: [ListItemComponent],
 })
 export class CardComponent {
-  private teacherStore = inject(TeacherStore);
-  private studentStore = inject(StudentStore);
-
   readonly list = input<any[] | null>(null);
   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());
-    }
-  }
 }