project files uploaded..

.browserslistrc

+# This file is used by the build system to adjust CSS and JS output to support the specified browsers below.
+# For additional information regarding the format and rule options, please see:
+# https://github.com/browserslist/browserslist#queries
+
+# For the full list of supported browsers by the Angular framework, please see:
+# https://angular.io/guide/browser-support
+
+# You can see what browsers were selected by your queries by running:
+#   npx browserslist
+
+last 1 Chrome version
+last 1 Firefox version
+last 2 Edge major versions
+last 2 Safari major versions
+last 2 iOS major versions
+Firefox ESR
+not IE 11 # Angular supports IE 11 only as an opt-in. To opt-in, remove the 'not' prefix on this line.

.editorconfig

+# Editor configuration, see https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.ts]
+quote_type = single
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false

.gitignore

+# See http://help.github.com/ignore-files/ for more about ignoring files.
+
+# compiled output
+/dist
+/tmp
+/out-tsc
+# Only exists if Bazel was run
+/bazel-out
+
+# dependencies
+/node_modules
+
+# profiling files
+chrome-profiler-events*.json
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history/*
+
+# misc
+/.sass-cache
+/connect.lock
+/coverage
+/libpeerconnection.log
+npm-debug.log
+yarn-error.log
+testem.log
+/typings
+
+# System Files
+.DS_Store
+Thumbs.db

README.md

-# Angular
+# ToDos
 
+This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 12.0.3.
+
+## Development server
+
+Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The app will automatically reload if you change any of the source files.
+
+## Code scaffolding
+
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+
+## Build
+
+Run `ng build` to build the project. The build artifacts will be stored in the `dist/` directory.
+
+## Running unit tests
+
+Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.io).
+
+## Running end-to-end tests
+
+Run `ng e2e` to execute the end-to-end tests via a platform of your choice. To use this command, you need to first add a package that implements end-to-end testing capabilities.
+
+## Further help
+
+To get more help on the Angular CLI use `ng help` or go check out the [Angular CLI Overview and Command Reference](https://angular.io/cli) page.

angular.json

+{
+  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "cli": {
+    "analytics": false
+  },
+  "version": 1,
+  "newProjectRoot": "projects",
+  "projects": {
+    "to-dos": {
+      "projectType": "application",
+      "schematics": {
+        "@schematics/angular:application": {
+          "strict": true
+        }
+      },
+      "root": "",
+      "sourceRoot": "src",
+      "prefix": "app",
+      "architect": {
+        "build": {
+          "builder": "@angular-devkit/build-angular:browser",
+          "options": {
+            "outputPath": "dist/to-dos",
+            "index": "src/index.html",
+            "main": "src/main.ts",
+            "polyfills": "src/polyfills.ts",
+            "tsConfig": "tsconfig.app.json",
+            "assets": [
+              "src/favicon.ico",
+              "src/assets"
+            ],
+            "styles": [
+              "src/styles.css",
+              "./node_modules/bootstrap/dist/css/bootstrap.min.css"
+            ],
+            "scripts": [
+              "./node_modules/bootstrap/dist/js/bootstrap.min.js"
+            ]
+          },
+          "configurations": {
+            "production": {
+              "budgets": [
+                {
+                  "type": "initial",
+                  "maximumWarning": "500kb",
+                  "maximumError": "1mb"
+                },
+                {
+                  "type": "anyComponentStyle",
+                  "maximumWarning": "2kb",
+                  "maximumError": "4kb"
+                }
+              ],
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.prod.ts"
+                }
+              ],
+              "outputHashing": "all"
+            },
+            "development": {
+              "buildOptimizer": false,
+              "optimization": false,
+              "vendorChunk": true,
+              "extractLicenses": false,
+              "sourceMap": true,
+              "namedChunks": true
+            }
+          },
+          "defaultConfiguration": "production"
+        },
+        "serve": {
+          "builder": "@angular-devkit/build-angular:dev-server",
+          "configurations": {
+            "production": {
+              "browserTarget": "to-dos:build:production"
+            },
+            "development": {
+              "browserTarget": "to-dos:build:development"
+            }
+          },
+          "defaultConfiguration": "development"
+        },
+        "extract-i18n": {
+          "builder": "@angular-devkit/build-angular:extract-i18n",
+          "options": {
+            "browserTarget": "to-dos:build"
+          }
+        },
+        "test": {
+          "builder": "@angular-devkit/build-angular:karma",
+          "options": {
+            "main": "src/test.ts",
+            "polyfills": "src/polyfills.ts",
+            "tsConfig": "tsconfig.spec.json",
+            "karmaConfig": "karma.conf.js",
+            "assets": [
+              "src/favicon.ico",
+              "src/assets"
+            ],
+            "styles": [
+              "src/styles.css"
+            ],
+            "scripts": []
+          }
+        }
+      }
+    }
+  },
+  "defaultProject": "to-dos"
+}

karma.conf.js

+// Karma configuration file, see link for more information
+// https://karma-runner.github.io/1.0/config/configuration-file.html
+
+module.exports = function (config) {
+  config.set({
+    basePath: '',
+    frameworks: ['jasmine', '@angular-devkit/build-angular'],
+    plugins: [
+      require('karma-jasmine'),
+      require('karma-chrome-launcher'),
+      require('karma-jasmine-html-reporter'),
+      require('karma-coverage'),
+      require('@angular-devkit/build-angular/plugins/karma')
+    ],
+    client: {
+      jasmine: {
+        // you can add configuration options for Jasmine here
+        // the possible options are listed at https://jasmine.github.io/api/edge/Configuration.html
+        // for example, you can disable the random execution with `random: false`
+        // or set a specific seed with `seed: 4321`
+      },
+      clearContext: false // leave Jasmine Spec Runner output visible in browser
+    },
+    jasmineHtmlReporter: {
+      suppressAll: true // removes the duplicated traces
+    },
+    coverageReporter: {
+      dir: require('path').join(__dirname, './coverage/to-dos'),
+      subdir: '.',
+      reporters: [
+        { type: 'html' },
+        { type: 'text-summary' }
+      ]
+    },
+    reporters: ['progress', 'kjhtml'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    singleRun: false,
+    restartOnFileChange: true
+  });
+};

package.json

+{
+  "name": "to-dos",
+  "version": "0.0.0",
+  "scripts": {
+    "ng": "ng",
+    "start": "ng serve",
+    "build": "ng build",
+    "watch": "ng build --watch --configuration development",
+    "test": "ng test"
+  },
+  "private": true,
+  "dependencies": {
+    "@angular/animations": "~12.0.3",
+    "@angular/common": "~12.0.3",
+    "@angular/compiler": "~12.0.3",
+    "@angular/core": "~12.0.3",
+    "@angular/forms": "~12.0.3",
+    "@angular/platform-browser": "~12.0.3",
+    "@angular/platform-browser-dynamic": "~12.0.3",
+    "@angular/router": "~12.0.3",
+    "bootstrap": "^5.0.0-beta3",
+    "rxjs": "~6.6.0",
+    "tslib": "^2.1.0",
+    "zone.js": "~0.11.4"
+  },
+  "devDependencies": {
+    "@angular-devkit/build-angular": "~12.0.3",
+    "@angular/cli": "~12.0.3",
+    "@angular/compiler-cli": "~12.0.3",
+    "@types/jasmine": "~3.6.0",
+    "@types/node": "^12.11.1",
+    "jasmine-core": "~3.7.0",
+    "karma": "~6.3.0",
+    "karma-chrome-launcher": "~3.1.0",
+    "karma-coverage": "~2.0.3",
+    "karma-jasmine": "~4.0.0",
+    "karma-jasmine-html-reporter": "^1.5.0",
+    "typescript": "~4.2.3"
+  }
+}

src/app/app-routing.module.ts

+import { NgModule } from '@angular/core';
+import { RouterModule, Routes } from '@angular/router';
+import { AuthenticationComponent } from './authentication/authentication.component';
+import { TodoFormComponent } from './todo-form/todo-form.component';
+
+const routes: Routes = [
+  {path:"", component:TodoFormComponent},
+  {path:"auth", component:AuthenticationComponent},
+  {path:":id/edit", component:TodoFormComponent}
+];
+
+@NgModule({
+  imports: [RouterModule.forRoot(routes)],
+  exports: [RouterModule]
+})
+export class AppRoutingModule { }

src/app/app.component.css

+strong{
+    font-weight: bold;
+    font-size: 2.4rem;
+    color: blueviolet;
+    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
+}
\ No newline at end of file

src/app/app.component.html

+<div class="container">
+  <div class="row">
+    <div class="col-xs-12">
+      <strong>Todo App</strong>
+     <div class="row">
+      <div class="col-md-6">
+      <router-outlet></router-outlet>
+      </div>
+      <div class="col-md-6" *ngIf="isLogin">
+        <b style="color: rgb(187, 20, 187); font-size: 20px;">All Todos</b>
+        <app-todos></app-todos>
+      </div>
+     </div>
+    </div>
+  </div>
+</div>
\ No newline at end of file

src/app/app.component.spec.ts

+import { TestBed } from '@angular/core/testing';
+import { RouterTestingModule } from '@angular/router/testing';
+import { AppComponent } from './app.component';
+
+describe('AppComponent', () => {
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [
+        RouterTestingModule
+      ],
+      declarations: [
+        AppComponent
+      ],
+    }).compileComponents();
+  });
+
+  it('should create the app', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.componentInstance;
+    expect(app).toBeTruthy();
+  });
+
+  it(`should have as title 'to-dos'`, () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.componentInstance;
+    expect(app.title).toEqual('to-dos');
+  });
+
+  it('should render title', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    fixture.detectChanges();
+    const compiled = fixture.nativeElement;
+    expect(compiled.querySelector('.content span').textContent).toContain('to-dos app is running!');
+  });
+});

src/app/app.component.ts

+import { Component, OnDestroy, OnInit } from '@angular/core';
+import { Router } from '@angular/router';
+import { Subscription } from 'rxjs';
+import { AuthService } from './authentication/auth.service';
+
+@Component({
+  selector: 'app-root',
+  templateUrl: './app.component.html',
+  styleUrls: ['./app.component.css'],
+})
+export class AppComponent implements OnInit, OnDestroy{
+  isLoginSub! : Subscription;
+
+  isLogin:boolean = false;
+  constructor(private authService:AuthService, private router:Router){}
+  ngOnInit(): void {
+    this.isLoginSub = this.authService.isLogin.subscribe(isLogin=>{
+      this.isLogin = isLogin;
+      console.log(`islogin is: ${isLogin}`);
+      if(!this.isLogin){
+        this.router.navigate(["auth"])
+      }else{
+        this.router.navigate([""])
+      }
+    })
+    if(!this.isLogin){
+      this.authService.logout();
+    }
+  }
+  title = 'to-dos';
+
+  ngOnDestroy(){
+    
+    this.isLoginSub.unsubscribe();
+  }
+  
+}

src/app/app.module.ts

+import { NgModule } from '@angular/core';
+import { FormsModule } from '@angular/forms';
+import { BrowserModule } from '@angular/platform-browser';
+import { HttpClientModule} from '@angular/common/http'
+import { AppComponent } from './app.component';
+import { TodoFormComponent } from './todo-form/todo-form.component';
+import { TodosComponent } from './todos/todos.component';
+import { LoadingRipleComponent } from './centraldata/loading-indicator/loading-riple.component';
+import { AuthenticationComponent } from './authentication/authentication.component';
+import { AppRoutingModule } from './app-routing.module';
+
+@NgModule({
+  declarations: [
+    AppComponent,
+    TodoFormComponent,
+    TodosComponent,
+    LoadingRipleComponent,
+    AuthenticationComponent
+  ],
+  imports: [
+    BrowserModule,
+    AppRoutingModule,
+    FormsModule,
+    HttpClientModule
+  
+  ],
+  providers: [],
+  bootstrap: [AppComponent]
+})
+export class AppModule { }

src/app/authentication/auth.service.ts

+import { HttpClient } from "@angular/common/http";
+import { Injectable } from "@angular/core";
+import { Subject } from "rxjs";
+
+@Injectable({providedIn:"root"})
+export class AuthService{
+
+    constructor(private http:HttpClient){}
+
+    isLogin : Subject<boolean> = new Subject<boolean>();
+
+    login(user:User){
+        
+       return this.http.post<AuthResponseData>("http://localhost:3000/api/auth/login",user);
+    }
+
+    register(user:User){
+        return this.http.post<AuthResponseData>("http://localhost:3000/api/auth/register",user);
+    }
+
+    autoLogin(){
+       let token = localStorage.getItem('token');
+       if(token){
+           this.isLogin.next(true)
+       }else{
+           this.isLogin.next(false);
+       }
+    }
+
+    logout(){
+        console.log("logout");
+        localStorage.removeItem('token');
+        this.isLogin.next(false);
+    }
+}
+
+export interface User{
+    username?:string,
+    email:String,
+    password:String
+}
+
+export interface AuthResponseData{
+    message:string,
+    success:boolean,
+    token?:string,
+    data?: User
+}
\ No newline at end of file

src/app/authentication/authentication.component.css

+
+input.ng-invalid.ng-touched{
+    border: 2px solid orangered;
+}
+
+span{
+    color: orangered;
+}
\ No newline at end of file

src/app/authentication/authentication.component.html

+
+<div class="row mt-5">
+    <div class="col-xs-12">
+        <div class="border-right-2">
+            <form #authForm="ngForm" (ngSubmit)="onSubmit()">
+
+                <div class="row" *ngIf="!isLoginMode">
+                    <div class="col-xs-5">
+                        <div class="form-group">
+                            <label for="username"> <strong>Username</strong> </label>
+                            <input type="text" class="form-control" id="username" required name="username" ngModel #username="ngModel">
+                            <span *ngIf="username.invalid && username.touched">Please enter your username</span>
+                        </div>
+                        
+                    </div>
+                </div>
+
+                <div class="row">
+                    <div class="col-xs-5">
+                        <div class="form-group">
+                            <label for="email"> <strong>Email</strong> </label>
+                            <input type="email" class="form-control" id="email" required name="email" ngModel #email="ngModel">
+                            <span *ngIf="email.invalid && email.touched">Please enter your email</span>
+                        </div>
+                        
+                    </div>
+                </div>
+                
+                  <div class="row mt-2">
+                      <div class="col-xs-12">
+                          <div class="form-group">
+                              <label for="password"> <strong>password</strong> </label>
+                              <input type="password" class="form-control" id="password" required name="password" ngModel #password="ngModel" [minlength]="6" >
+                              <span *ngIf="password.invalid && password.touched">Please enter your password</span>
+                          </div>
+                      </div>
+                  </div>
+
+                  <div class="row  mt-5">
+                      <div class="form-group">
+                        <button class="btn btn-primary" type="submit" [disabled]="authForm.invalid"> {{isLoginMode ? "Login" : "Sign Up"}} </button>  
+                        <button class="btn btn-danger mx-3" type="button" (click)= "switchMode()">Swith to {{isLoginMode ? "Sign Up" : "Login"}} </button>
+                      </div>
+                  </div>
+            </form> 
+        </div>       
+  </div>
+ 
+</div>
+     
\ No newline at end of file

src/app/authentication/authentication.component.spec.ts

+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { AuthenticationComponent } from './authentication.component';
+
+describe('AuthenticationComponent', () => {
+  let component: AuthenticationComponent;
+  let fixture: ComponentFixture<AuthenticationComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ AuthenticationComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(AuthenticationComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/authentication/authentication.component.ts

+import { Component, OnInit, ViewChild } from '@angular/core';
+import { NgForm } from '@angular/forms';
+import { AuthService } from './auth.service';
+
+@Component({
+  selector: 'app-authentication',
+  templateUrl: './authentication.component.html',
+  styleUrls: ['./authentication.component.css']
+})
+export class AuthenticationComponent implements OnInit {
+
+  @ViewChild('authForm') authForm!:NgForm;
+
+  constructor(private authService:AuthService) { }
+
+  isLoginMode = true;
+
+  ngOnInit(): void {
+  }
+
+  onSubmit(){
+    // console.log(`IsLogin ${this.isLoginMode}`);
+    
+    // console.log(this.authForm.value);
+    //this.authService.isLogin.next(true);
+    if(this.isLoginMode){
+      this.authService.login(this.authForm.value).subscribe(responseData=>{
+        console.log(responseData);
+        if(responseData.success){
+          this.authService.isLogin.next(true);
+          localStorage.setItem('token',responseData.token!)
+        }else{
+          console.log(responseData.message);
+        }
+        
+      });
+    }else{
+      this.isLoginMode=true;
+      this.authService.register(this.authForm.value).subscribe(responseData=>{
+        console.log(responseData);
+        if(responseData.success){
+          this.authService.isLogin.next(true);
+          localStorage.setItem('token',responseData.token!)
+        }else{
+          console.log(responseData.message);
+        }
+      });
+    }
+    
+    
+  }
+
+  switchMode(){
+    this.isLoginMode = !this.isLoginMode
+  }
+
+}

src/app/centraldata/data-store.service.ts

+import { HttpClient, HttpParams } from "@angular/common/http";
+import { Injectable } from "@angular/core";
+import { ResponseData, Todo } from "../todo.service";
+
+@Injectable({providedIn:'root'})
+export class DataStoreService{
+    
+    constructor(private http:HttpClient){}
+
+    // saveData(todos:Todo[]){
+    //     this.http.put("https://angulardemo-3a75a-default-rtdb.firebaseio.com/todos.json", todos).subscribe(respData=>{
+    //         console.log(respData);
+            
+    //     })
+        
+    // }
+
+    // fetchData(){
+    //    return this.http.get("https://angulardemo-3a75a-default-rtdb.firebaseio.com/todos.json");
+    // }
+    saveTodo(todo:Todo){
+       return this.http.post<ResponseData>("http://localhost:3000/api/todos/save",todo);
+    };
+
+    fetchAllTodos(){
+        return this.http.get<ResponseData>("http://localhost:3000/api/todos/all");
+    }
+
+    deleteTodo(id:string){
+        return this.http.delete<ResponseData>("http://localhost:3000/api/todos/delete/"+id);
+    }
+
+    updateTodo(id:string, updatedTodo:Todo){
+        return this.http.put<ResponseData>("http://localhost:3000/api/todos/update/"+id, updatedTodo);
+    }
+}
\ No newline at end of file

src/app/centraldata/loading-indicator/loading-riple.component.css

+
+@keyframes ldio-v8era3rmin {
+    0% {
+      top: 112.80000000000001px;
+      left: 112.80000000000001px;
+      width: 0;
+      height: 0;
+      opacity: 1;
+    }
+    100% {
+      top: 21.150000000000002px;
+      left: 21.150000000000002px;
+      width: 183.3px;
+      height: 183.3px;
+      opacity: 0;
+    }
+  }.ldio-v8era3rmin div {
+    position: absolute;
+    border-width: 4.7px;
+    border-style: solid;
+    opacity: 1;
+    border-radius: 50%;
+    animation: ldio-v8era3rmin 1.7857142857142856s cubic-bezier(0,0.2,0.8,1) infinite;
+  }.ldio-v8era3rmin div:nth-child(1) {
+    border-color: #e90c59;
+    animation-delay: 0s;
+  }
+  .ldio-v8era3rmin div:nth-child(2) {
+    border-color: #46dff0;
+    animation-delay: -0.8928571428571428s;
+  }
+  .loadingio-spinner-ripple-6k4r25kx7t {
+    width: 235px;
+    height: 235px;
+    display: inline-block;
+    overflow: hidden;
+    background: #ffffff;
+  }
+  .ldio-v8era3rmin {
+    width: 100%;
+    height: 100%;
+    position: relative;
+    transform: translateZ(0) scale(1);
+    backface-visibility: hidden;
+    transform-origin: 0 0; /* see note above */
+  }
+  .ldio-v8era3rmin div { box-sizing: content-box; }
+  /* generated by https://loading.io/ */
+  
\ No newline at end of file

src/app/centraldata/loading-indicator/loading-riple.component.ts

+import { Component } from "@angular/core";
+
+@Component({
+    selector:'app-loading',
+    template:`<div class="loadingio-spinner-ripple-6k4r25kx7t"><div class="ldio-v8era3rmin">
+    <div></div><div></div>
+    </div></div>`,
+    styleUrls:['./loading-riple.component.css']
+})
+export class LoadingRipleComponent{
+    
+}
\ No newline at end of file

src/app/todo-form/todo-form.component.css

+label{
+    font-size: 18px;
+    font-weight: bold;
+}
+
+label.radioBtn{
+    font-size: 14px;
+    font-weight: bold;
+}
+
+input.ng-invalid.ng-touched{
+    border: 2px solid orangered;
+}
+
+span{
+    color: orangered;
+}
\ No newline at end of file

src/app/todo-form/todo-form.component.html

+
+<div class="row mt-5">
+    <div class="col-xs-12">
+        <div class="border-right-2">
+            <form #todoForm="ngForm" (ngSubmit)="onSubmit()">
+                <div class="row">
+                    <div class="col-xs-5">
+                        <div class="form-group">
+                            <label for="title">Todo Title</label>
+                            <input type="text" class="form-control" id="title" required name="title" ngModel #title="ngModel">
+                            <span *ngIf="title.invalid && title.touched">this field is required</span>
+                        </div>
+                        
+                    </div>
+                </div>
+                
+                  <div class="row mt-2">
+                      <div class="col-xs-12">
+                          <div class="form-group">
+                              <label for="todo">Todo Text</label>
+                              <input type="text" class="form-control" id="todo" required name="text" ngModel #text="ngModel">
+                              <span *ngIf="text.invalid && text.touched">this field is required</span>
+                          </div>
+                      </div>
+                  </div>
+
+                  <div class="row mt-2">
+                      <div class="col-xs-12">
+                          <strong style="font-size: 18px;">Todo Status</strong>
+                        <div class="form-group mt-2">
+                            <div class="form-check" *ngFor="let todoStatus of todoStatuses" id="radiobtn">
+                                <label class="radioBtn" for="status"><input class="form-check-input" type="radio" name="status" [value]="todoStatus" id="status" [ngModel]="defaultStatus"> {{todoStatus}} </label>  
+                            </div>
+                        </div>
+                      </div>
+                  </div>
+                  
+                  <div class="row  mt-5">
+                      <div class="form-group">
+                        <button class="btn btn-primary" type="submit" [disabled]="todoForm.invalid"> {{buttonName}} </button>  
+                        <button class="btn btn-danger mx-3" *ngIf="isUpdate" type="button" (click)="onCancel()">Cancel</button>
+                      </div>
+                  </div>
+                  <div class="mt-5">
+                    <button class="btn btn-danger" (click)="logout()">Logout</button>
+                  </div>
+            </form> 
+        </div>       
+  </div>
+ 
+</div>
+     
\ No newline at end of file

src/app/todo-form/todo-form.component.spec.ts

+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { TodoFormComponent } from './todo-form.component';
+
+describe('TodoFormComponent', () => {
+  let component: TodoFormComponent;
+  let fixture: ComponentFixture<TodoFormComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ TodoFormComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(TodoFormComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/todo-form/todo-form.component.ts

+import { Component, OnDestroy, OnInit, ViewChild } from '@angular/core';
+import { NgForm } from '@angular/forms';
+import { ActivatedRoute } from '@angular/router';
+import { Subscription } from 'rxjs';
+import { AuthService } from '../authentication/auth.service';
+import { Todo, TodoService } from '../todo.service';
+
+@Component({
+  selector: 'app-todo-form',
+  templateUrl: './todo-form.component.html',
+  styleUrls: ['./todo-form.component.css']
+})
+export class TodoFormComponent implements OnInit, OnDestroy {
+
+  @ViewChild("todoForm") todoForm:NgForm | undefined;
+
+  todoStatuses:string[] = ['pending', 'completed'];
+  defaultStatus="pending";
+
+  formValuesSubscription!: Subscription;
+  buttonName:string = "Add Todo";
+  isUpdate:boolean = false;
+  updatingItemIndex!:number;
+  
+  constructor(private todoService:TodoService, private authService:AuthService, private route:ActivatedRoute) { }
+
+  ngOnInit(): void {
+  this.formValuesSubscription =  this.todoService.seletedItem.subscribe((todo:Todo)=>{
+      this.todoForm?.setValue({
+        title:todo.title,
+        text:todo.text,
+        status:todo.status
+      })
+    });
+   this.todoService.isUpdate.subscribe((isUpdate)=>{
+    this.buttonName = isUpdate.isUpdating?"Update Todo":"Add Todo";
+    this.isUpdate = isUpdate.isUpdating;
+    this.updatingItemIndex = isUpdate.id
+  });
+  }
+
+  onSubmit(){
+    //console.log(this.todoForm);
+    if(this.isUpdate){
+      //console.log("updating item index: "+this.updatingItemIndex);
+      this.todoService.updateTodo(this.updatingItemIndex,{title:this.todoForm?.value.title,text:this.todoForm?.value.text, status:this.todoForm?.value.status})
+      this.formReset();
+    }else{
+      this.todoService.addTodo({title:this.todoForm?.value.title,text:this.todoForm?.value.text, status:this.todoForm?.value.status})
+     this.formReset();
+    }
+    
+  }
+
+  onCancel(){
+    this.formReset();
+    this.todoService.isUpdate.next({isUpdating:false,id:null})
+  }
+
+  formReset(){
+    this.todoForm?.reset({
+      status:this.defaultStatus
+    })
+  }
+
+  logout(){
+    this.authService.logout();
+  }
+
+  ngOnDestroy(){
+    this.formValuesSubscription.unsubscribe();
+  }
+
+}

src/app/todo.service.spec.ts

+import { TestBed } from '@angular/core/testing';
+
+import { TodoService } from './todo.service';
+
+describe('TodoService', () => {
+  let service: TodoService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(TodoService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src/app/todo.service.ts

+
+import { Injectable } from '@angular/core';
+import { Subject } from 'rxjs';
+import { DataStoreService } from './centraldata/data-store.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class TodoService {
+
+  isUpdate:Subject<{isUpdating:boolean,id:any}> = new Subject<{isUpdating:boolean,id:any}>();
+  latestTodos:Subject<Todo[]>= new Subject<Todo[]>();
+  seletedItem:Subject<Todo> = new Subject<Todo>();
+  isLoading:Subject<boolean> = new Subject<boolean>();
+  todos:Todo[]=[];//[{title:'milk',text:'buy milk',status:'pending'},{title:'eggs',text:'buy eggs',status:'pending'},{title:'workout',text:'Do exercise',status:'completed'}];
+
+
+  constructor(private dataStoreService:DataStoreService) { }
+
+  
+
+
+  getTodos(){
+     this.isLoading.next(false);
+    // this.dataStoreService.fetchData().subscribe(respData=>{
+    //   this.isLoading.next(false);
+    //   this.todos = respData as Todo[];
+    //   this.latestTodos.next(this.todos.slice());
+    // })
+    this.dataStoreService.fetchAllTodos().subscribe((responseData:ResponseData)=>{
+      if(responseData.success){
+        this.todos = responseData.data as Todo[];
+        this.latestTodos.next(this.todos.slice());
+      }else{
+        console.log(responseData.message);
+        
+      }
+      this.isLoading.next(false);
+      
+    })
+
+    return this.todos.slice();
+    
+  }
+
+  getTodo(index:number){
+    return this.todos.slice()[index];
+  }
+
+  addTodo(newTodo:Todo){
+    this.isLoading.next(true);
+    // this.todos.push(newTodo);
+    // this.latestTodos.next(this.todos.slice());
+    // this.isLoading.next(false);
+    this.dataStoreService.saveTodo(newTodo).subscribe((responseData:ResponseData)=>{
+      console.log(responseData.data as Todo);
+      this.todos.push(responseData.data as Todo);      
+      this.latestTodos.next(this.todos.slice());
+      this.isLoading.next(false);
+  });
+  }
+
+  updateTodo(i:number,updateTodo:Todo){
+    this.todos[i] = {_id:this.todos[i]._id!,title:updateTodo.title, text:updateTodo.text, status:updateTodo.status};
+    this.isUpdate.next({isUpdating:false,id:null});
+   // this.dataStoreService.saveData(this.todos);
+   let id = this.todos[i]._id!;
+   this.dataStoreService.updateTodo(id,updateTodo).subscribe((responseData:ResponseData)=>{
+     if(responseData.success){
+       console.log(responseData.message);
+     }else{
+      console.log(responseData.message);
+     }
+     this.latestTodos.next(this.todos.slice());
+   })
+    
+  }
+
+  onSeletedItem(todo:Todo){
+    console.log("Id is: "+this.todos.indexOf(todo));
+    
+    this.isUpdate.next({isUpdating:true,id:this.todos.indexOf(todo)});
+    this.seletedItem.next(todo);
+  }
+
+  deleteTodo(i:number){
+    console.log("deleted id:"+i);
+    console.log(this.todos[i]);
+    
+    let id = this.todos[i]._id!;
+    console.log(`ID is: ${id}`);
+    
+    
+    this.todos.splice(i,1);
+   // this.dataStoreService.saveData(this.todos);
+   this.dataStoreService.deleteTodo(id).subscribe((responseData:ResponseData)=>{
+     console.log(responseData.message);
+     this.latestTodos.next(this.todos.slice());
+   });
+    
+    
+  }
+}
+
+export interface Todo{
+  _id?:string,
+  title:string,
+  text:string,
+  status:string
+}
+
+export interface ResponseData{
+  message:string,
+  success:boolean,
+  data:Todo | Todo[]
+} 

src/app/todos/todos.component.css

+i.pending{
+    color: orangered;
+}
+i.completed{
+    color: green;
+}
+
+p.completed{
+    font-size: 18px;
+    text-decoration: line-through;
+    text-decoration-thickness: 4px;
+}
+
+div.hightLight{
+    background-color: lightskyblue;
+}
\ No newline at end of file

src/app/todos/todos.component.html

+
+<div class="row">
+    <div class="col-xs-12">
+       <div style="text-align: center;">
+        <app-loading *ngIf="isLoading"></app-loading>
+       </div>
+        <div *ngFor="let todo of todos; let i=index">
+                <div [class]="i===itemIndex?'hightLight':''" class="list-group-item clearfix m-2 rounded-2 border-dark">
+                    <div (click)="onSelect(i)">
+                        <strong class="list-group-item-heading clearfix"> {{todo.title}} </strong>
+                        <p class="list-group-item-text {{todo.status}}"> {{todo.text}} </p>
+                        <i [class]="todo.status"> {{todo.status}} </i>
+                    </div>
+                    <div style="text-align: right;">
+                        <button class="btn btn-danger" type="button" (click)="onDelete(i)">Delete</button>
+                    </div>
+                </div>
+        </div>
+        <!-- <a class="list-group-item clearfix">
+            <div>
+                <strong class="list-group-item-heading">Title</strong>
+                <p class="list-group-item-text">Text</p>
+            </div>
+        </a>
+        
+        <a>
+            <div class="list-group-item clearfix">
+                <strong class="list-group-item-heading">Title</strong>
+                <p class="list-group-item-text">Text</p>
+            </div>
+        </a> -->
+    </div>
+</div>

src/app/todos/todos.component.spec.ts

+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { TodosComponent } from './todos.component';
+
+describe('TodosComponent', () => {
+  let component: TodosComponent;
+  let fixture: ComponentFixture<TodosComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ TodosComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(TodosComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/todos/todos.component.ts

+import { Component, OnDestroy, OnInit } from '@angular/core';
+import { ActivatedRoute, Router } from '@angular/router';
+import { Subscription } from 'rxjs';
+import { Todo, TodoService } from '../todo.service';
+
+@Component({
+  selector: 'app-todos',
+  templateUrl: './todos.component.html',
+  styleUrls: ['./todos.component.css']
+})
+export class TodosComponent implements OnInit, OnDestroy {
+
+ 
+
+  todos:Todo[] = [];
+  todosSubscription : Subscription | undefined;
+  itemIndex!:number;
+  itemIndexSubscription!:Subscription;
+  isLoading:boolean = true;
+  isLoadingSubscription!:Subscription;
+
+  constructor(private todoService:TodoService, private router:Router, private route:ActivatedRoute) { }
+
+  ngOnInit(): void {
+    //this.todos=this.todoService.getTodos();
+    
+   this.isLoading = this.todos.length!==0;
+   this.todosSubscription = this.todoService.latestTodos.subscribe((todos:Todo[])=>{
+      this.todos = todos;
+    
+    })
+   this.itemIndexSubscription = this.todoService.isUpdate.subscribe(isUpdate=>{
+      this.itemIndex = isUpdate.id;
+    })
+    this.isLoadingSubscription = this.todoService.isLoading.subscribe(isloading=>{
+      this.isLoading = isloading;
+      console.log(`loading : ${isloading}`);
+      
+    })
+    
+  }
+
+  onSelect(i:number){
+   // console.log(this.todos[i]);
+    this.todoService.onSeletedItem(this.todos[i]);
+    this.itemIndex = i;
+  }
+
+  onDelete(i:number){
+    this.todoService.deleteTodo(i);
+  }
+
+  ngOnDestroy(){
+    this.todosSubscription?.unsubscribe();
+    this.itemIndexSubscription.unsubscribe();
+  }
+
+}

src/environments/environment.prod.ts

+export const environment = {
+  production: true
+};

src/environments/environment.ts

+// This file can be replaced during build by using the `fileReplacements` array.
+// `ng build` replaces `environment.ts` with `environment.prod.ts`.
+// The list of file replacements can be found in `angular.json`.
+
+export const environment = {
+  production: false
+};
+
+/*
+ * For easier debugging in development mode, you can import the following file
+ * to ignore zone related error stack frames such as `zone.run`, `zoneDelegate.invokeTask`.
+ *
+ * This import should be commented out in production mode because it will have a negative impact
+ * on performance if an error is thrown.
+ */
+// import 'zone.js/plugins/zone-error';  // Included with Angular CLI.

src/index.html

+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <title>ToDos</title>
+  <base href="/">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="icon" type="image/x-icon" href="favicon.ico">
+</head>
+<body>
+  <app-root></app-root>
+</body>
+</html>

src/main.ts

+import { enableProdMode } from '@angular/core';
+import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
+
+import { AppModule } from './app/app.module';
+import { environment } from './environments/environment';
+
+if (environment.production) {
+  enableProdMode();
+}
+
+platformBrowserDynamic().bootstrapModule(AppModule)
+  .catch(err => console.error(err));

src/polyfills.ts

+/**
+ * This file includes polyfills needed by Angular and is loaded before the app.
+ * You can add your own extra polyfills to this file.
+ *
+ * This file is divided into 2 sections:
+ *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
+ *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
+ *      file.
+ *
+ * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
+ * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
+ * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
+ *
+ * Learn more in https://angular.io/guide/browser-support
+ */
+
+/***************************************************************************************************
+ * BROWSER POLYFILLS
+ */
+
+/**
+ * IE11 requires the following for NgClass support on SVG elements
+ */
+// import 'classlist.js';  // Run `npm install --save classlist.js`.
+
+/**
+ * Web Animations `@angular/platform-browser/animations`
+ * Only required if AnimationBuilder is used within the application and using IE/Edge or Safari.
+ * Standard animation support in Angular DOES NOT require any polyfills (as of Angular 6.0).
+ */
+// import 'web-animations-js';  // Run `npm install --save web-animations-js`.
+
+/**
+ * By default, zone.js will patch all possible macroTask and DomEvents
+ * user can disable parts of macroTask/DomEvents patch by setting following flags
+ * because those flags need to be set before `zone.js` being loaded, and webpack
+ * will put import in the top of bundle, so user need to create a separate file
+ * in this directory (for example: zone-flags.ts), and put the following flags
+ * into that file, and then add the following code before importing zone.js.
+ * import './zone-flags';
+ *
+ * The flags allowed in zone-flags.ts are listed here.
+ *
+ * The following flags will work for all browsers.
+ *
+ * (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
+ * (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
+ * (window as any).__zone_symbol__UNPATCHED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames
+ *
+ *  in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
+ *  with the following flag, it will bypass `zone.js` patch for IE/Edge
+ *
+ *  (window as any).__Zone_enable_cross_context_check = true;
+ *
+ */
+
+/***************************************************************************************************
+ * Zone JS is required by default for Angular itself.
+ */
+import 'zone.js';  // Included with Angular CLI.
+
+
+/***************************************************************************************************
+ * APPLICATION IMPORTS
+ */

src/styles.css

+/* You can add global styles to this file, and also import other style files */

src/test.ts

+// This file is required by karma.conf.js and loads recursively all the .spec and framework files
+
+import 'zone.js/testing';
+import { getTestBed } from '@angular/core/testing';
+import {
+  BrowserDynamicTestingModule,
+  platformBrowserDynamicTesting
+} from '@angular/platform-browser-dynamic/testing';
+
+declare const require: {
+  context(path: string, deep?: boolean, filter?: RegExp): {
+    keys(): string[];
+    <T>(id: string): T;
+  };
+};
+
+// First, initialize the Angular testing environment.
+getTestBed().initTestEnvironment(
+  BrowserDynamicTestingModule,
+  platformBrowserDynamicTesting()
+);
+// Then we find all the tests.
+const context = require.context('./', true, /\.spec\.ts$/);
+// And load the modules.
+context.keys().map(context);

tsconfig.app.json

+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/app",
+    "types": []
+  },
+  "files": [
+    "src/main.ts",
+    "src/polyfills.ts"
+  ],
+  "include": [
+    "src/**/*.d.ts"
+  ]
+}

tsconfig.json

+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "compileOnSave": false,
+  "compilerOptions": {
+    "baseUrl": "./",
+    "outDir": "./dist/out-tsc",
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "sourceMap": true,
+    "declaration": false,
+    "downlevelIteration": true,
+    "experimentalDecorators": true,
+    "moduleResolution": "node",
+    "importHelpers": true,
+    "target": "es2017",
+    "module": "es2020",
+    "lib": [
+      "es2018",
+      "dom"
+    ]
+  },
+  "angularCompilerOptions": {
+    "enableI18nLegacyMessageIdFormat": false,
+    "strictInjectionParameters": true,
+    "strictInputAccessModifiers": true,
+    "strictTemplates": true
+  }
+}

tsconfig.spec.json

+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/spec",
+    "types": [
+      "jasmine"
+    ]
+  },
+  "files": [
+    "src/test.ts",
+    "src/polyfills.ts"
+  ],
+  "include": [
+    "src/**/*.spec.ts",
+    "src/**/*.d.ts"
+  ]
+}