From 8dd636803a0ff50dd3d41fa2a2dd9e33b8505b07 Mon Sep 17 00:00:00 2001
From: Paramesh555 <parameshmethuku@gmail.com>
Date: Mon, 30 Jun 2025 21:33:41 +0530
Subject: [PATCH 1/2] feat(city): manually added city component

---
 .../city-card/city-card.component.ts          | 34 ++++++++++++++++---
 .../src/app/data-access/city.store.ts         |  2 +-
 .../src/app/ui/card/card.component.ts         | 30 +++++++++++++---
 .../app/ui/list-item/list-item.component.ts   |  4 +++
 apps/angular/1-projection/tsconfig.json       |  3 +-
 5 files changed, 62 insertions(+), 11 deletions(-)

diff --git a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
index 8895c8c84..e093d0674 100644
--- a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
@@ -1,9 +1,35 @@
-import { ChangeDetectionStrategy, Component } from '@angular/core';
+import {
+  ChangeDetectionStrategy,
+  Component,
+  OnInit,
+  inject,
+} from '@angular/core';
+import { CityStore } from '../../data-access/city.store';
+import { FakeHttpService } from '../../data-access/fake-http.service';
+import { CardType } from '../../model/card.model';
+import { CardComponent } from '../../ui/card/card.component';
 
 @Component({
   selector: 'app-city-card',
-  template: 'TODO City',
-  imports: [],
+  template: `
+    <app-card
+      [list]="cities()"
+      [type]="cardType"
+      customClass="bg-light-red"></app-card>
+  `,
+  imports: [CardComponent],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class CityCardComponent {}
+export class CityCardComponent implements OnInit {
+  private http = inject(FakeHttpService);
+  private store = inject(CityStore);
+
+  cities = this.store.cities;
+  cardType = CardType.CITY;
+
+  ngOnInit(): void {
+    this.http.fetchCities$.subscribe((t) => {
+      this.store.addAll(t);
+    });
+  }
+}
diff --git a/apps/angular/1-projection/src/app/data-access/city.store.ts b/apps/angular/1-projection/src/app/data-access/city.store.ts
index a8b523569..9fbcb346b 100644
--- a/apps/angular/1-projection/src/app/data-access/city.store.ts
+++ b/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);
diff --git a/apps/angular/1-projection/src/app/ui/card/card.component.ts b/apps/angular/1-projection/src/app/ui/card/card.component.ts
index 1a6c3648c..1c3c28081 100644
--- a/apps/angular/1-projection/src/app/ui/card/card.component.ts
+++ b/apps/angular/1-projection/src/app/ui/card/card.component.ts
@@ -1,6 +1,11 @@
 import { NgOptimizedImage } from '@angular/common';
 import { Component, inject, input } from '@angular/core';
-import { randStudent, randTeacher } from '../../data-access/fake-http.service';
+import { CityStore } from '../../data-access/city.store';
+import {
+  randStudent,
+  randTeacher,
+  randomCity,
+} 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';
@@ -18,13 +23,25 @@ import { ListItemComponent } from '../list-item/list-item.component';
       @if (type() === CardType.STUDENT) {
         <img ngSrc="assets/img/student.webp" width="200" height="200" />
       }
+      @if (type() === CardType.CITY) {
+        <img ngSrc="assets/img/student.webp" width="200" height="200" />
+      }
 
       <section>
         @for (item of list(); track item) {
-          <app-list-item
-            [name]="item.firstName"
-            [id]="item.id"
-            [type]="type()"></app-list-item>
+          @if (type() === CardType.TEACHER || type() === CardType.STUDENT) {
+            <app-list-item
+              [name]="item.firstName"
+              [id]="item.id"
+              [type]="type()"></app-list-item>
+          }
+
+          @if (type() === CardType.CITY) {
+            <app-list-item
+              [name]="item.name"
+              [id]="item.id"
+              [type]="type()"></app-list-item>
+          }
         }
       </section>
 
@@ -40,6 +57,7 @@ import { ListItemComponent } from '../list-item/list-item.component';
 export class CardComponent {
   private teacherStore = inject(TeacherStore);
   private studentStore = inject(StudentStore);
+  private cityStore = inject(CityStore);
 
   readonly list = input<any[] | null>(null);
   readonly type = input.required<CardType>();
@@ -53,6 +71,8 @@ export class CardComponent {
       this.teacherStore.addOne(randTeacher());
     } else if (type === CardType.STUDENT) {
       this.studentStore.addOne(randStudent());
+    } else if (type === CardType.CITY) {
+      this.cityStore.addOne(randomCity());
     }
   }
 }
diff --git a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
index 5d504f372..519a71e9e 100644
--- a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
+++ b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
@@ -4,6 +4,7 @@ import {
   inject,
   input,
 } from '@angular/core';
+import { CityStore } from '../../data-access/city.store';
 import { StudentStore } from '../../data-access/student.store';
 import { TeacherStore } from '../../data-access/teacher.store';
 import { CardType } from '../../model/card.model';
@@ -23,6 +24,7 @@ import { CardType } from '../../model/card.model';
 export class ListItemComponent {
   private teacherStore = inject(TeacherStore);
   private studentStore = inject(StudentStore);
+  private cityStore = inject(CityStore);
 
   readonly id = input.required<number>();
   readonly name = input.required<string>();
@@ -34,6 +36,8 @@ export class ListItemComponent {
       this.teacherStore.deleteOne(id);
     } else if (type === CardType.STUDENT) {
       this.studentStore.deleteOne(id);
+    } else if (type === CardType.CITY) {
+      this.cityStore.deleteOne(id);
     }
   }
 }
diff --git a/apps/angular/1-projection/tsconfig.json b/apps/angular/1-projection/tsconfig.json
index 52eb4f718..0358ec445 100644
--- a/apps/angular/1-projection/tsconfig.json
+++ b/apps/angular/1-projection/tsconfig.json
@@ -20,7 +20,8 @@
     "noImplicitOverride": true,
     "noPropertyAccessFromIndexSignature": true,
     "noImplicitReturns": true,
-    "noFallthroughCasesInSwitch": true
+    "noFallthroughCasesInSwitch": true,
+    "importHelpers": false
   },
   "angularCompilerOptions": {
     "enableI18nLegacyMessageIdFormat": false,

From f450e418d9de2cefb92ac844147e4e196994bcee Mon Sep 17 00:00:00 2001
From: Paramesh555 <parameshmethuku@gmail.com>
Date: Tue, 1 Jul 2025 23:00:44 +0530
Subject: [PATCH 2/2] feat: make card component independent using ng-template

---
 .../city-card/city-card.component.ts          | 31 ++++++--
 .../student-card/student-card.component.ts    | 30 ++++++--
 .../teacher-card/teacher-card.component.ts    | 38 ++++++++--
 .../src/app/ui/card/card.component.ts         | 73 +++++--------------
 .../app/ui/list-item/list-item.component.ts   | 25 +------
 5 files changed, 101 insertions(+), 96 deletions(-)

diff --git a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
index e093d0674..774b07130 100644
--- a/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/city-card/city-card.component.ts
@@ -5,19 +5,27 @@ import {
   inject,
 } from '@angular/core';
 import { CityStore } from '../../data-access/city.store';
-import { FakeHttpService } from '../../data-access/fake-http.service';
-import { CardType } from '../../model/card.model';
+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: `
-    <app-card
-      [list]="cities()"
-      [type]="cardType"
-      customClass="bg-light-red"></app-card>
+    <app-card [list]="cities()" customClass="bg-light-red" (add)="addCity()">
+      <img src="assets/img/city.png" width="200" height="200" />
+      <ng-template #rowRef let-item>
+        <app-list-item
+          [name]="item.name"
+          [id]="item.id"
+          (delete)="deleteCity($event)"></app-list-item>
+      </ng-template>
+    </app-card>
   `,
-  imports: [CardComponent],
+  imports: [CardComponent, ListItemComponent],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class CityCardComponent implements OnInit {
@@ -25,11 +33,18 @@ export class CityCardComponent implements OnInit {
   private store = inject(CityStore);
 
   cities = this.store.cities;
-  cardType = CardType.CITY;
 
   ngOnInit(): void {
     this.http.fetchCities$.subscribe((t) => {
       this.store.addAll(t);
     });
   }
+
+  addCity() {
+    this.store.addOne(randomCity());
+  }
+
+  deleteCity(id: number) {
+    this.store.deleteOne(id);
+  }
 }
diff --git a/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts b/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
index bdfa4abd4..432bdbc1f 100644
--- a/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/student-card/student-card.component.ts
@@ -4,18 +4,29 @@ 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" />
+      customClass="bg-light-green"
+      (add)="addStudent()">
+      <img src="assets/img/student.webp" width="200" height="200" />
+      <ng-template #rowRef let-item>
+        <app-list-item
+          [name]="item.firstName"
+          [id]="item.id"
+          (delete)="deleteStudent($event)"></app-list-item>
+      </ng-template>
+    </app-card>
   `,
   styles: [
     `
@@ -24,7 +35,7 @@ import { CardComponent } from '../../ui/card/card.component';
       }
     `,
   ],
-  imports: [CardComponent],
+  imports: [CardComponent, ListItemComponent],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class StudentCardComponent implements OnInit {
@@ -32,9 +43,16 @@ export class StudentCardComponent implements OnInit {
   private store = inject(StudentStore);
 
   students = this.store.students;
-  cardType = CardType.STUDENT;
 
   ngOnInit(): void {
     this.http.fetchStudents$.subscribe((s) => this.store.addAll(s));
   }
+
+  addStudent() {
+    this.store.addOne(randStudent());
+  }
+
+  deleteStudent(id: number) {
+    this.store.deleteOne(id);
+  }
 }
diff --git a/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts b/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
index adf0ad3c1..1d6bf1989 100644
--- a/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
+++ b/apps/angular/1-projection/src/app/component/teacher-card/teacher-card.component.ts
@@ -1,16 +1,32 @@
-import { Component, inject, OnInit } from '@angular/core';
-import { FakeHttpService } from '../../data-access/fake-http.service';
+import {
+  ChangeDetectionStrategy,
+  Component,
+  inject,
+  OnInit,
+} 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 { 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>
+      customClass="bg-light-red"
+      (add)="addTeacher()">
+      <img src="assets/img/teacher.png" width="200" height="200" />
+      <ng-template #rowRef let-item>
+        <app-list-item
+          [name]="item.firstName"
+          [id]="item.id"
+          (delete)="deleteTeacher($event)"></app-list-item>
+      </ng-template>
+    </app-card>
   `,
   styles: [
     `
@@ -19,16 +35,24 @@ import { CardComponent } from '../../ui/card/card.component';
       }
     `,
   ],
-  imports: [CardComponent],
+  imports: [CardComponent, ListItemComponent],
+  changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class TeacherCardComponent implements OnInit {
   private http = inject(FakeHttpService);
   private store = inject(TeacherStore);
 
   teachers = this.store.teachers;
-  cardType = CardType.TEACHER;
 
   ngOnInit(): void {
     this.http.fetchTeachers$.subscribe((t) => this.store.addAll(t));
   }
+
+  addTeacher() {
+    this.store.addOne(randTeacher());
+  }
+
+  deleteTeacher(id: number) {
+    this.store.deleteOne(id);
+  }
 }
diff --git a/apps/angular/1-projection/src/app/ui/card/card.component.ts b/apps/angular/1-projection/src/app/ui/card/card.component.ts
index 1c3c28081..ca65d9fb0 100644
--- a/apps/angular/1-projection/src/app/ui/card/card.component.ts
+++ b/apps/angular/1-projection/src/app/ui/card/card.component.ts
@@ -1,14 +1,12 @@
-import { NgOptimizedImage } from '@angular/common';
-import { Component, inject, input } from '@angular/core';
-import { CityStore } from '../../data-access/city.store';
+import { CommonModule, NgOptimizedImage } from '@angular/common';
 import {
-  randStudent,
-  randTeacher,
-  randomCity,
-} 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';
+  Component,
+  ContentChild,
+  EventEmitter,
+  input,
+  Output,
+  TemplateRef,
+} from '@angular/core';
 import { ListItemComponent } from '../list-item/list-item.component';
 
 @Component({
@@ -17,62 +15,29 @@ 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" />
-      }
-      @if (type() === CardType.STUDENT) {
-        <img ngSrc="assets/img/student.webp" width="200" height="200" />
-      }
-      @if (type() === CardType.CITY) {
-        <img ngSrc="assets/img/student.webp" width="200" height="200" />
-      }
-
+      <ng-content select="img"></ng-content>
       <section>
-        @for (item of list(); track item) {
-          @if (type() === CardType.TEACHER || type() === CardType.STUDENT) {
-            <app-list-item
-              [name]="item.firstName"
-              [id]="item.id"
-              [type]="type()"></app-list-item>
-          }
-
-          @if (type() === CardType.CITY) {
-            <app-list-item
-              [name]="item.name"
-              [id]="item.id"
-              [type]="type()"></app-list-item>
-          }
-        }
+        <ng-container *ngFor="let item of list()">
+          <ng-template
+            [ngTemplateOutlet]="rowTemplate"
+            [ngTemplateOutletContext]="{ $implicit: item }"></ng-template>
+        </ng-container>
       </section>
 
       <button
         class="rounded-sm border border-blue-500 bg-blue-300 p-2"
-        (click)="addNewItem()">
+        (click)="add.emit()">
         Add
       </button>
     </div>
   `,
-  imports: [ListItemComponent, NgOptimizedImage],
+  imports: [ListItemComponent, NgOptimizedImage, CommonModule],
 })
 export class CardComponent {
-  private teacherStore = inject(TeacherStore);
-  private studentStore = inject(StudentStore);
-  private cityStore = inject(CityStore);
+  @Output() add = new EventEmitter<void>();
+
+  @ContentChild('rowRef') rowTemplate!: TemplateRef<any>;
 
   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());
-    } else if (type === CardType.CITY) {
-      this.cityStore.addOne(randomCity());
-    }
-  }
 }
diff --git a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
index 519a71e9e..5f563c2fc 100644
--- a/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
+++ b/apps/angular/1-projection/src/app/ui/list-item/list-item.component.ts
@@ -1,20 +1,17 @@
 import {
   ChangeDetectionStrategy,
   Component,
-  inject,
+  EventEmitter,
   input,
+  Output,
 } from '@angular/core';
-import { CityStore } from '../../data-access/city.store';
-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)="delete.emit(id())">
         <img class="h-5" src="assets/svg/trash.svg" />
       </button>
     </div>
@@ -22,22 +19,8 @@ import { CardType } from '../../model/card.model';
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class ListItemComponent {
-  private teacherStore = inject(TeacherStore);
-  private studentStore = inject(StudentStore);
-  private cityStore = inject(CityStore);
+  @Output() delete = new EventEmitter<number>();
 
   readonly id = input.required<number>();
   readonly name = input.required<string>();
-  readonly type = input.required<CardType>();
-
-  delete(id: number) {
-    const type = this.type();
-    if (type === CardType.TEACHER) {
-      this.teacherStore.deleteOne(id);
-    } else if (type === CardType.STUDENT) {
-      this.studentStore.deleteOne(id);
-    } else if (type === CardType.CITY) {
-      this.cityStore.deleteOne(id);
-    }
-  }
 }