From 1d9c108bfbaeb957893ad6b001ba4241f1b509c7 Mon Sep 17 00:00:00 2001
From: Florian Hartwich <s46831@beuth-hochschule.de>
Date: Wed, 5 Apr 2017 02:43:17 +0200
Subject: [PATCH] Add model driven form form 'forms' app

---
 project-manager/projects-server/db.json       |  10 +-
 project-manager/src/app/app.component.html    |   3 +
 project-manager/src/app/app.module.ts         |   4 +
 project-manager/src/app/app.routing.ts        |   7 +-
 .../src/app/login/login.component.spec.ts     |   5 +-
 .../model-driven-form.component.html          |  87 +++++++++++++
 .../model-driven-form.component.spec.ts       |  66 ++++++++++
 .../model-driven-form.component.ts            | 117 ++++++++++++++++++
 .../model-driven-form.routing.ts              |   3 +
 .../src/app/models/app-validators.ts          |  25 +++-
 .../app/services/user-service/user.service.ts |   8 ++
 .../show-error-model-driven.component.ts      |  61 +++++++++
 .../src/app/tasks/tasks.routing.ts            |   1 -
 13 files changed, 384 insertions(+), 13 deletions(-)
 create mode 100644 project-manager/src/app/model-driven-form/model-driven-form.component.html
 create mode 100644 project-manager/src/app/model-driven-form/model-driven-form.component.spec.ts
 create mode 100644 project-manager/src/app/model-driven-form/model-driven-form.component.ts
 create mode 100644 project-manager/src/app/model-driven-form/model-driven-form.routing.ts
 create mode 100644 project-manager/src/app/services/user-service/user.service.ts
 create mode 100644 project-manager/src/app/show-error/show-error-model-driven.component.ts

diff --git a/project-manager/projects-server/db.json b/project-manager/projects-server/db.json
index 8e0ccd8..04df9ed 100644
--- a/project-manager/projects-server/db.json
+++ b/project-manager/projects-server/db.json
@@ -5,9 +5,9 @@
       "title": "Ersten Prototyp mit Angular 2.0 entwickeln",
       "description": "Der Prototyp soll zeigen, wie Routing und HTTP-Anbindung umgesetzt werden können.",
       "tags": [],
-      "state": "IN_PROGRESS",
+      "state": "BACKLOG",
       "assignee": {
-        "name": "Christoph Höller",
+        "name": "Christoph Höllers",
         "email": ""
       }
     },
@@ -40,18 +40,18 @@
       "change_settings": true
     },
     {
-      "id" : 302,
+      "id": 302,
       "name": "user_edit",
       "password": "ea847988ba59727dbf4e34ee75726dc3",
       "edit_tasks": true,
       "change_settings": false
     },
     {
-      "id" : 303,
+      "id": 303,
       "name": "user",
       "password": "5ebe2294ecd0e0f08eab7690d2a6ee69",
       "edit_tasks": false,
       "change_settings": false
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/project-manager/src/app/app.component.html b/project-manager/src/app/app.component.html
index 10b7a87..e9cc263 100644
--- a/project-manager/src/app/app.component.html
+++ b/project-manager/src/app/app.component.html
@@ -31,6 +31,9 @@
           <li routerLinkActive="active">
             <a routerLink='/blog' class="link">Blog</a>
           </li>
+          <li routerLinkActive="active">
+            <a routerLink='/model-form' class="link">Model Form</a>
+          </li>
           <!--
           <li routerLinkActive="active">
             <a routerLink='/tasks/new' class="link">Neue Aufgabe anlegen</a>
diff --git a/project-manager/src/app/app.module.ts b/project-manager/src/app/app.module.ts
index eac06a3..6457d70 100644
--- a/project-manager/src/app/app.module.ts
+++ b/project-manager/src/app/app.module.ts
@@ -16,6 +16,8 @@ import {SOCKET_IO, AUTH_ENABLED} from './app.tokens';
 import {environment} from '../environments/environment';
 import {mockIO} from './mocks/mock-socket';
 import {TaskItemComponent} from './tasks/task-list/task-item.component';
+import {UserService} from "./services/user-service/user.service";
+import {ShowErrorComponentModelDriven} from "./show-error/show-error-model-driven.component";
 
 export function socketIoFactory() {
   if (environment.e2eMode) {
@@ -29,6 +31,7 @@ const enableAuthentication = !environment.e2eMode;
 @NgModule({
   imports: [BrowserModule, FormsModule, ReactiveFormsModule, appRouting, HttpModule],
   providers: [LoginService,
+    UserService,
     UserStore,
     TaskService,
     TaskStore,
@@ -41,6 +44,7 @@ const enableAuthentication = !environment.e2eMode;
     routingComponents,
     TaskItemComponent,
     ShowErrorComponent,
+    ShowErrorComponentModelDriven,
     APPLICATION_VALIDATORS],
   bootstrap: [AppComponent]
 })
diff --git a/project-manager/src/app/app.routing.ts b/project-manager/src/app/app.routing.ts
index 4066e7f..60b7e20 100644
--- a/project-manager/src/app/app.routing.ts
+++ b/project-manager/src/app/app.routing.ts
@@ -10,15 +10,16 @@ import {tasksRoutes, tasksRoutingComponents, tasksRoutingProviders} from './task
 import {RxDemoComponent} from './rxdemo/rxdemo.component';
 import {LoginGuard} from './login/login.guard';
 import {blogRoutingComponents} from "./blog/blog.routing";
+import {ModelDrivenFormComponent} from "./model-driven-form/model-driven-form.component";
 
 export const appRoutes: Routes = [
   {path: 'dashboard', component: DashboardComponent, data: {title: 'Startseite'}},
   {path: '', redirectTo: '/dashboard', pathMatch: 'full'},
-  {path: 'settings', component: SettingsComponent, data: { title: 'Einstellungen' },
-  },
+  {path: 'settings', component: SettingsComponent, data: { title: 'Einstellungen' }},
   {path: 'about', component: AboutComponent, data: {title: 'Über uns'}},
   {path: 'rxdemo', component: RxDemoComponent, data: {title: 'RxJS Demo'}},
   {path: 'blog', component: BlogComponent, data: {title: 'Blog'}},
+  {path: 'model-form', component: ModelDrivenFormComponent, data: { title: 'Model Driven Task Form' }},
 
   {path: 'login', component: LoginComponent},
 
@@ -34,7 +35,7 @@ export const appRoutes: Routes = [
 export const appRouting = RouterModule.forRoot(appRoutes);
 
 export const routingComponents = [DashboardComponent, SettingsComponent, AboutComponent, LoginComponent, NotFoundComponent,
-  RxDemoComponent, ...blogRoutingComponents, ...tasksRoutingComponents];
+  RxDemoComponent, ModelDrivenFormComponent, ...blogRoutingComponents, ...tasksRoutingComponents];
 
 export const routingProviders = [LoginGuard,
   ...tasksRoutingProviders];
diff --git a/project-manager/src/app/login/login.component.spec.ts b/project-manager/src/app/login/login.component.spec.ts
index b9bf07b..d6f005b 100644
--- a/project-manager/src/app/login/login.component.spec.ts
+++ b/project-manager/src/app/login/login.component.spec.ts
@@ -2,8 +2,8 @@ import {TestBed} from "@angular/core/testing";
 import {LoginComponent} from "./login.component";
 import {RouterTestingModule} from "@angular/router/testing";
 import {LoginService} from "../services/login-service/login-service";
-import {MockLoginService} from "../mocks/mock-login-service.spec";
 import {FormsModule} from "@angular/forms";
+import {MockLoginService} from "../mocks/mock-login-service.spec";
 import Spy = jasmine.Spy;
 
 
@@ -32,8 +32,7 @@ describe('Login Component Template Driven Form Test with Spy', () => {
 
     // Login ausfuellen und absenden
     loginFixture.whenStable().then(() => {
-      // Spy anmelden
-      // sobald Spy angemeldet ist, wird der eigentliche Methodenrumpf nicht mehr aufgerufen
+      // Spy anmelden, die eigentliche Methode wird nicht mehr aufgerufen
       const spy = spyOn(loginInstance, 'login');
 
       // Formular Eingabe
diff --git a/project-manager/src/app/model-driven-form/model-driven-form.component.html b/project-manager/src/app/model-driven-form/model-driven-form.component.html
new file mode 100644
index 0000000..8fa0b91
--- /dev/null
+++ b/project-manager/src/app/model-driven-form/model-driven-form.component.html
@@ -0,0 +1,87 @@
+<h2 *ngIf="!task.id">Neue Aufgabe anlegen</h2>
+<h2 *ngIf="task.id">Aufgabe bearbeiten</h2>
+
+<form novalidate [formGroup]="taskForm"
+      (ngSubmit)="saveTask(taskForm.value)">
+  <div class="form-group">
+    <label>Titel</label>
+    <input class="form-control" formControlName="title"/>
+  </div>
+  <pjm-show-error text="Titel" path="title"></pjm-show-error>
+  <div class="form-group">
+    <label>Beschreibung</label>
+    <textarea class="form-control" formControlName="description">
+    </textarea>
+    <pjm-show-error text="Beschreibung" path="description"></pjm-show-error>
+  </div>
+
+  <label>Tags</label>
+  <div formArrayName="tags">
+    <div *ngFor="let tag of tagsArray.controls; let i = index">
+      <div class="tag-controls" [formGroupName]="i">
+        <input class="form-control" formControlName="label">
+        <button class="btn btn-danger" (click)="removeTag(i)">
+          Tag entfernen
+        </button>
+        <pjm-show-error text="Ein Tag" path="tags.{{i}}.label"></pjm-show-error>
+      </div>
+    </div>
+  </div>
+  <div class="form-group">
+    <button class="btn btn-success" (click)="addTag()"> + </button>
+  </div>
+  <div class="form-group">
+    <label>Status</label>
+    <select formControlName="state" class="form-control">
+        <option *ngFor="let state of model.states" [value]="state">
+          {{model.stateTexts[state]}}
+        </option>
+    </select>
+  </div>
+
+  <div class="checkbox">
+    <label>
+      <input type="checkbox" formControlName="favorite">
+      Zu Favoriten hinzufügen
+    </label>
+  </div>
+  <br>
+  <h4>Zuständiger</h4>
+  <div formGroupName="assignee">
+    <div class="form-group">
+      <label>Name</label>
+      <input type="text" class="form-control"
+             formControlName="name"/>
+      <pjm-show-error path="assignee/name" text="Name"></pjm-show-error>
+    </div>
+    <div class="form-group">
+      <label>E-Mail</label>
+      <input type="text" class="form-control"
+             formControlName="email"/>
+      <pjm-show-error path="assignee.email"></pjm-show-error>
+    </div>
+
+    <div *ngIf="taskForm.hasError('assigneeRequired')"
+         class="alert alert-danger">
+      Der Task befindet sich nicht mehr im Backlog <br>
+      Bitte geben Sie einen Zuständigen an.
+    </div>
+  </div>
+
+  <button type="submit"
+          class="btn btn-default"
+          [disabled]="!taskForm.valid">
+    Aufgabe speichern
+  </button>
+</form>
+
+<hr>
+
+<button (click)="loadTask(1)"
+        class="btn btn-default">
+  Task 1 laden
+</button>
+<button (click)="loadTask(2)"
+        class="btn btn-default">
+  Task 2 laden
+</button>
diff --git a/project-manager/src/app/model-driven-form/model-driven-form.component.spec.ts b/project-manager/src/app/model-driven-form/model-driven-form.component.spec.ts
new file mode 100644
index 0000000..ec741d1
--- /dev/null
+++ b/project-manager/src/app/model-driven-form/model-driven-form.component.spec.ts
@@ -0,0 +1,66 @@
+import {ReactiveFormsModule} from '@angular/forms';
+import {TestBed, ComponentFixture} from '@angular/core/testing';
+import {ModelDrivenFormComponent} from './model-driven-form.component';
+import {TaskService} from '../services/task-service/task.service';
+import {UserService} from '../services/user-service/user.service';
+
+beforeEach(() => {
+  TestBed.configureTestingModule({
+    imports: [ReactiveFormsModule],
+    providers: [TaskService, UserService],
+    declarations: [ModelDrivenFormComponent]
+  });
+});
+
+describe('Model Driven Form', () => {
+  it('should validate the title directly', () => {
+
+    const fixture = TestBed.createComponent(ModelDrivenFormComponent);
+    const form = fixture.componentInstance.taskForm;
+
+    const titleControl = form.get('title');
+    expect(titleControl.errors['required']).toBeTruthy(); // Cannot read property 'errors' of undefined
+
+    titleControl.setValue('Task');
+    expect(titleControl.errors['required']).toBeUndefined();
+    const minError = {requiredLength: 5, actualLength: 4};
+
+    expect(titleControl.errors['minlength']).toEqual(minError);
+    titleControl.setValue('Task 1');
+    expect(titleControl.errors).toBeNull();
+  });
+}
+
+/*
+  it('should validate the whole form ', fakeAsync(() => {
+
+    const fixture = TestBed.createComponent(ModelDrivenFormComponent);
+
+    const form = fixture.componentInstance.taskForm;
+
+    console.log(form.patchValue({title: 'Task123'}));
+    fixture.detectChanges();
+    tick(5000);
+    fixture.detectChanges();
+    tick(50000);
+    console.log(form.valid)
+
+
+  }));
+
+  it('should be able to work with Observable.delay', fakeAsync(() => {
+    const actuallyDone=false;
+    const source = Observable.of(true).delay(10);
+    source.subscribe(
+      val => {
+        actuallyDone = true;
+      },
+      err => fail(err)
+    );
+    tick(100);
+    expect(actuallyDone).toBeTruthy(); // Expected false to be truthy.
+
+    discardPeriodicTasks();
+  }));
+*/
+  );
diff --git a/project-manager/src/app/model-driven-form/model-driven-form.component.ts b/project-manager/src/app/model-driven-form/model-driven-form.component.ts
new file mode 100644
index 0000000..21d704b
--- /dev/null
+++ b/project-manager/src/app/model-driven-form/model-driven-form.component.ts
@@ -0,0 +1,117 @@
+import {Component} from '@angular/core';
+import {FormGroup, FormArray, FormControl, FormBuilder, Validators} from '@angular/forms';
+import {Task, createInitialTask} from '../models/model-interfaces';
+import * as model from '../models/model-interfaces';
+import {ifNotBacklogThanAssignee,  emailValidator, UserExistsValidatorDirective} from '../models/app-validators';
+import {TaskService} from '../services/task-service/task.service';
+import {UserService} from '../services/user-service/user.service';
+
+@Component({
+  selector: 'pjm-model-driven-form',
+  templateUrl: './model-driven-form.component.html'
+})
+export class ModelDrivenFormComponent {
+
+  model = model;
+  task: Task = createInitialTask();
+
+  taskForm: FormGroup;
+  tagsArray: FormArray;
+
+  constructor(private taskService: TaskService,
+              private userService: UserService,
+              fb: FormBuilder) {
+    this.taskForm = fb.group({
+      title: ['', [Validators.required, Validators.minLength(5)]],
+      description: ['', Validators.maxLength(2000)],
+      favorite: [false],
+      state: ['BACKLOG'],
+      tags: fb.array([
+        this.createTagControl()
+      ]),
+      assignee: fb.group({
+        name: ['', null, this.userExistsValidatorReused],
+        email: ['', emailValidator],
+      })
+    }, {validator: ifNotBacklogThanAssignee});
+
+    this.taskForm.valueChanges.subscribe((value) => {
+      Object.assign(this.task, value);
+    });
+
+    this.tagsArray = <FormArray>this.taskForm.controls['tags'];
+
+    /*
+    this.taskForm = new FormGroup({
+      title: new FormControl(''),
+      description: new FormControl(''),
+      favorite: new FormControl(false),
+      state: new FormControl('BACKLOG'),
+      tags: new FormArray([
+        new FormGroup({
+          label: new FormControl('')
+        })
+      ]),
+      assignee: new FormGroup({
+        name: new FormControl(''),
+        email: new FormControl('')
+      }),
+    });*/
+  }
+
+  private createTagControl(): FormGroup {
+    return new FormGroup({
+      label: new FormControl('', Validators.minLength(3))
+    });
+  }
+
+  addTag() {
+    this.tagsArray.push(this.createTagControl());
+    return false;
+  }
+
+  removeTag(i: number) {
+    this.tagsArray.removeAt(i);
+    return false;
+  }
+
+  saveTask(value: any) {
+    console.log(value);
+    Object.assign(this.task, value);
+    this.taskService.saveTask(this.task);
+  }
+
+  loadTask(id: number) {
+    const task : Task = this.taskService.getTask(id);
+    this.adjustTagsArray(task.tags);
+    this.taskForm.patchValue(task);
+    this.task = task;
+    return false;
+  }
+
+  private adjustTagsArray(tags: any[]) {
+    const tagCount = tags ? tags.length : 0;
+    while (tagCount > this.tagsArray.controls.length) {
+      this.addTag();
+    }
+    while (tagCount <  this.tagsArray.controls.length) {
+      this.removeTag(0);
+    }
+  }
+
+  userExistsValidator = (control) => {
+    return this.userService.checkUserExists(control.value)
+      .map(checkResult => {
+        return (checkResult === false) ? {userNotFound: true} : null;
+      });
+  }
+
+  userExistsValidatorReused = (control) => {
+    const validator = new UserExistsValidatorDirective(this.userService);
+    return validator.validate(control);
+  };
+
+}
+
+
+
diff --git a/project-manager/src/app/model-driven-form/model-driven-form.routing.ts b/project-manager/src/app/model-driven-form/model-driven-form.routing.ts
new file mode 100644
index 0000000..e11a625
--- /dev/null
+++ b/project-manager/src/app/model-driven-form/model-driven-form.routing.ts
@@ -0,0 +1,3 @@
+import {ModelDrivenFormComponent} from "./model-driven-form.component";
+
+export const modelDrivenFormRoutingComponent = [ModelDrivenFormComponent];
diff --git a/project-manager/src/app/models/app-validators.ts b/project-manager/src/app/models/app-validators.ts
index a6640f6..dd10e22 100644
--- a/project-manager/src/app/models/app-validators.ts
+++ b/project-manager/src/app/models/app-validators.ts
@@ -2,8 +2,10 @@ import {Directive, forwardRef} from '@angular/core';
 import {
   FormControl,
   AbstractControl,
-  NG_VALIDATORS
+  NG_VALIDATORS, NG_ASYNC_VALIDATORS
 } from '@angular/forms';
+import {UserService} from "../services/user-service/user.service";
+import {Observable} from "rxjs";
 
 export function asyncIfNotBacklogThenAssignee(control): Promise<any> {
   const promise = new Promise((resolve, reject) => {
@@ -82,6 +84,27 @@ export function emailValidator2(control): {[key: string]: any} {
   }
 }
 
+@Directive({
+  selector: '[pjmUserExistsValidator]',
+  providers: [
+    {
+      provide: NG_ASYNC_VALIDATORS,
+      useExisting: forwardRef(() => UserExistsValidatorDirective), multi: true
+    }
+  ]
+})
+export class UserExistsValidatorDirective {
+  constructor(private userService: UserService) {
+  }
+
+  validate(control: AbstractControl): Observable<any> {
+    return this.userService.checkUserExists(control.value)
+      .map(userExists => {
+        return (userExists === false) ? {userNotFound: true} :null;
+      });
+  }
+}
+
 @Directive({
   selector: '[emailValidator]',
   providers: [
diff --git a/project-manager/src/app/services/user-service/user.service.ts b/project-manager/src/app/services/user-service/user.service.ts
new file mode 100644
index 0000000..54be0e1
--- /dev/null
+++ b/project-manager/src/app/services/user-service/user.service.ts
@@ -0,0 +1,8 @@
+
+import {Observable} from 'rxjs/Observable';
+export class UserService {
+  checkUserExists(name: string): Observable<boolean> {
+    const result = name == null || name.toLowerCase() !== 'johnny incognito';
+    return Observable.of(result).delay(250);
+  }
+}
diff --git a/project-manager/src/app/show-error/show-error-model-driven.component.ts b/project-manager/src/app/show-error/show-error-model-driven.component.ts
new file mode 100644
index 0000000..0ca738e
--- /dev/null
+++ b/project-manager/src/app/show-error/show-error-model-driven.component.ts
@@ -0,0 +1,61 @@
+import {Component, Input, Optional} from '@angular/core';
+import {NgForm, FormGroup, FormGroupDirective} from '@angular/forms';
+
+@Component({
+  selector: 'pjm-show-error',
+  template: `
+    <div *ngIf="errorMessages" class="alert alert-danger">
+        <div *ngFor="let errorMessage of errorMessages">
+            {{errorMessage}}
+        </div>
+    </div>` })
+export class ShowErrorComponentModelDriven {
+
+  @Input('path') path;
+  @Input('text') displayName = '';
+
+  constructor(@Optional() private ngForm: NgForm,
+              @Optional() private formGroup: FormGroupDirective) {
+  }
+
+  get errorMessages(): string[] {
+    let form: FormGroup;
+    if (this.ngForm) {
+      form = this.ngForm.form;
+    } else  {
+      form = this.formGroup.form;
+    }
+    const control = form.get(this.path);
+    const messages = [];
+    if (!control || !(control.touched) || !control.errors) {
+      return null;
+    }
+    for (const code in control.errors) {
+      if (control.errors.hasOwnProperty(code)) {
+        const error = control.errors[code];
+        let message = '';
+        switch (code) {
+          case 'required':
+            message = `${this.displayName} ist ein Pflichtfeld`;
+            break;
+          case 'minlength':
+            message = `${this.displayName} muss mindestens ${error.requiredLength} Zeichen enthalten`;
+            break;
+          case 'maxlength':
+            message = `${this.displayName} darf maximal ${error.requiredLength} Zeichen enthalten`;
+            break;
+          case 'invalidEMail':
+            message = `Bitte geben Sie eine gültige E-Mail-Adresse an`;
+            break;
+          case 'userNotFound':
+            message = `Der eingetragene Benutzer existiert nicht.`;
+            break;
+          default:
+            message = `${name} ist nicht valide`;
+        }
+        messages.push(message);
+      }
+    }
+    return messages;
+  }
+}
diff --git a/project-manager/src/app/tasks/tasks.routing.ts b/project-manager/src/app/tasks/tasks.routing.ts
index f60b41f..f2c3d4f 100644
--- a/project-manager/src/app/tasks/tasks.routing.ts
+++ b/project-manager/src/app/tasks/tasks.routing.ts
@@ -4,7 +4,6 @@ import {EditTaskComponent} from './edit-task/edit-task.component';
 import {EditTaskGuard} from './edit-task/edit-task.guard';
 import {TaskOverviewComponent} from './task-overview/task-overview.component';
 import {TasksComponent} from './tasks.component';
-import {LoginGuard} from '../login/login.guard';
 
 export const tasksRoutes: Routes = [{
   path: '', component: TasksComponent,