First Idea for the DataStore

client/src/app/core/exceptions.ts

@@ -0,0 +1,5 @@
+export class ImproperlyConfiguredError extends Error {
+    constructor(m: string) {
+        super(m);
+    }
+}

client/src/app/core/models/baseModel.ts

@@ -0,0 +1,48 @@
+import { Observable } from 'rxjs';
+
+import { DS } from 'app/core/services/DS.service';
+
+const INVALID_COLLECTION_STRING = 'invalid-collection-string';
+
+export type ModelId = number | string;
+
+export abstract class BaseModel {
+    abstract id: ModelId;
+
+    constructor() {}
+
+    // Typescript does not allow static and abstract at the same time :(((
+    static getCollectionString(): string {
+        return INVALID_COLLECTION_STRING;
+    }
+
+    private static getCheckedCollectionString(): string {
+        const collectionString: string = this.getCollectionString();
+        if (collectionString === INVALID_COLLECTION_STRING) {
+            throw new ImproperlyConfigured(
+                'Invalid collection string: Please override the static getCollectionString method!'
+            );
+        }
+        return collectionString;
+    }
+
+    protected static _get<T extends BaseModel>(id: ModelId): T | undefined {
+        return DS.get(this.getCheckedCollectionString(), id) as T;
+    }
+    protected static _getAll<T extends BaseModel>(): T[] {
+        return DS.getAll(this.getCheckedCollectionString()) as T[];
+    }
+    protected static _filter<T extends BaseModel>(callback): T[] {
+        return DS.filter(this.getCheckedCollectionString(), callback) as T[];
+    }
+
+    abstract getCollectionString(): string;
+
+    save(): Observable<any> {
+        return DS.save(this);
+    }
+
+    delete(): Observable<any> {
+        return DS.delete(this);
+    }
+}

client/src/app/core/models/group.ts

@@ -0,0 +1,29 @@
+import { BaseModel } from './baseModel';
+
+export class Group extends BaseModel {
+    id: number;
+    name: string;
+    permissions: string[];
+
+    constructor(id: number) {
+        super();
+        this.id = id;
+    }
+
+    static getCollectionString(): string {
+        return 'users/group';
+    }
+    static get(id: number): Group | undefined {
+        return this._get<Group>(id);
+    }
+    static getAll(): Group[] {
+        return this._getAll<Group>();
+    }
+    static filter(callback): Group[] {
+        return this._filter<Group>(callback);
+    }
+
+    getCollectionString(): string {
+        return 'users/group';
+    }
+}

client/src/app/core/models/user.ts

@@ -1,4 +1,46 @@
-export class User {
+import { BaseModel } from './baseModel';
+
+export class User extends BaseModel {
+    id: number;
     username: string;
-    password: string;
+    title: string;
+    first_name: string;
+    last_name: string;
+    structure_level: string;
+    number: string;
+    about_me: string;
+    groups_id: number[];
+    is_present: boolean;
+    is_committee: boolean;
+    email: string;
+    last_email_send?: string;
+    comment: string;
+    is_active: boolean;
+    default_password: string;
+
+    constructor(id: number) {
+        super();
+        this.id = id;
+    }
+
+    static getCollectionString(): string {
+        return 'users/user';
+    }
+    // Make this static lookup methods typesafe
+    // TODO: I'm not happy about this:
+    // - this has to be done for every model
+    // - this may be extendet, if there are more static functionallities for models.
+    static get(id: number): User | undefined {
+        return this._get<User>(id);
+    }
+    static getAll(): User[] {
+        return this._getAll<User>();
+    }
+    static filter(callback): User[] {
+        return this._filter<User>(callback);
+    }
+
+    getCollectionString(): string {
+        return 'users/user';
+    }
 }

client/src/app/core/services/DS.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed, inject } from '@angular/core/testing';
+
+import { DS } from './DS.service';
+
+describe('DS', () => {
+    beforeEach(() => {
+        TestBed.configureTestingModule({
+            providers: [DS]
+        });
+    });
+
+    /*it('should be created', inject([DSService], (DS: DSService) => {
+        expect(DS).toBeTruthy();
+    }));*/
+    // just a static use
+});

client/src/app/core/services/DS.service.ts

@@ -0,0 +1,90 @@
+import { Observable, of } from 'rxjs';
+
+import { ImproperlyConfiguredError } from 'app/core/exceptions';
+import { BaseModel, ModelId } from 'app/core/models/baseModel';
+
+interface Collection {
+    [id: number]: BaseModel;
+}
+
+interface DataStore {
+    [collectionString: string]: Collection;
+}
+
+export class DS {
+    static DS: DataStore;
+
+    private constructor() {} // Just a static class!
+
+    static get(collectionString: string, id: ModelId): BaseModel | undefined {
+        const collection: Collection = DS[collectionString];
+        if (!collection) {
+            return;
+        }
+        const model: BaseModel = collection[id];
+        return model;
+    }
+    static getAll(collectionString: string): BaseModel[] {
+        const collection: Collection = DS[collectionString];
+        if (!collection) {
+            return [];
+        }
+        return Object.values(collection);
+    }
+    // TODO: type for callback function
+    static filter(collectionString: string, callback): BaseModel[] {
+        return this.getAll(collectionString).filter(callback);
+    }
+
+    static inject(collectionString: string, model: BaseModel): void {
+        if (!model.id) {
+            throw new ImproperlyConfiguredError('The model must have an id!');
+        }
+        if (model.getCollectionString() !== collectionString) {
+            throw new ImproperlyConfiguredError('The model you try to insert has not the right collection string');
+        }
+        if (!DS[collectionString]) {
+            DS[collectionString] = {};
+        }
+        DS[collectionString][model.id] = model;
+    }
+
+    static injectMany(collectionString: string, models: BaseModel[]): void {
+        models.forEach(model => {
+            DS.inject(collectionString, model);
+        });
+    }
+
+    static eject(collectionString: string, id: ModelId) {
+        if (DS[collectionString]) {
+            delete DS[collectionString][id];
+        }
+    }
+    static ejectMany(collectionString: string, ids: ModelId[]) {
+        ids.forEach(id => {
+            DS.eject(collectionString, id);
+        });
+    }
+
+    // TODO remove the any there and in BaseModel.
+    static save(model: BaseModel): Observable<any> {
+        if (!model.id) {
+            throw new ImproperlyConfiguredError('The model must have an id!');
+        }
+        const collectionString: string = model.getCollectionString();
+        // make http request to the server
+        // if this was a success, inject the model into the DS
+        return of();
+    }
+
+    // TODO remove the any there and in BaseModel.
+    static delete(model: BaseModel): Observable<any> {
+        if (!model.id) {
+            throw new ImproperlyConfiguredError('The model must have an id!');
+        }
+        const collectionString: string = model.getCollectionString();
+        // make http request to the server
+        // if this was a success, eject the model from the DS
+        return of();
+    }
+}

client/src/app/core/services/auth.service.ts

@@ -43,9 +43,14 @@ export class AuthService {
     }
 
     //loggins a users. expects a user model
-    login(user: User): Observable<User | any> {
+    login(username: string, password: string): Observable<User | any> {
+        const user: any = {
+            username: username,
+            password: password
+        };
         return this.http.post<User>('/users/login/', user, httpOptions).pipe(
             tap(val => {
+                localStorage.setItem('username', val.username);
                 this.isLoggedIn = true;
                 //Set the session cookie in local storrage.
                 //TODO needs validation

client/src/app/site/login/login.component.html

@@ -8,14 +8,14 @@
         <tr>
           <td>
             <mat-form-field class="login-full-widht">
-              <input matInput placeholder="Username" [(ngModel)]="user.username" name="username" required>
+              <input matInput placeholder="Username" [(ngModel)]="username" name="username" required>
             </mat-form-field>
           </td>
         </tr>
         <tr>
           <td>
             <mat-form-field class="example-full-width">
-              <input matInput placeholder="Password" [(ngModel)]="user.password" type="password" name="password" required>
+              <input matInput placeholder="Password" [(ngModel)]="password" type="password" name="password" required>
             </mat-form-field>
           </td>
         </tr>

client/src/app/site/login/login.component.ts

@@ -4,7 +4,6 @@ import { Title } from '@angular/platform-browser';
 import { MatSnackBar } from '@angular/material';
 
 import { BaseComponent } from 'app/base.component';
-import { User } from 'app/core/models/user';
 import { AuthService } from 'app/core/services/auth.service';
 
 @Component({
@@ -13,10 +12,8 @@ import { AuthService } from 'app/core/services/auth.service';
     styleUrls: ['./login.component.css']
 })
 export class LoginComponent extends BaseComponent implements OnInit {
-    user: User = {
-        username: '',
-        password: ''
-    };
+    username = '';
+    password = '';
     info: string;
 
     constructor(
@@ -48,7 +45,7 @@ export class LoginComponent extends BaseComponent implements OnInit {
     //like saving a "logged in state" and real checking the server
     //if logIn was fine
     formLogin(): void {
-        this.authService.login(this.user).subscribe(res => {
+        this.authService.login(this.username, this.password).subscribe(res => {
             if (res.status === 400) {
                 //TODO translate
                 console.log('res: ', res);
@@ -57,8 +54,6 @@ export class LoginComponent extends BaseComponent implements OnInit {
                 // this.toastService.success('Logged in! :)');
                 this.setInfo();
                 if (this.authService.isLoggedIn) {
-                    localStorage.setItem('username', res.user.username);
-
                     // Get the redirect URL from our auth service
                     // If no redirect has been set, use the default
                     const redirect = this.authService.redirectUrl ? this.authService.redirectUrl : '/';

client/src/app/site/start/start.component.html

@@ -6,4 +6,5 @@
     <span>{{'Welcome to OpenSlides' | translate}}</span>
     <br/>
     <p translate [translateParams]="{user: 'Tim'}">Hello user</p>
+    <button type="button" (click)="test()">test</button>
 </div>

client/src/app/site/start/start.component.ts

@@ -2,6 +2,10 @@ import { Component, OnInit } from '@angular/core';
 import { Title } from '@angular/platform-browser';
 import { BaseComponent } from 'app/base.component';
 
+// for testing the DS and BaseModel
+import { User } from 'app/core/models/user';
+import { DS } from 'app/core/services/DS.service';
+
 @Component({
     selector: 'app-start',
     templateUrl: './start.component.html',
@@ -15,4 +19,22 @@ export class StartComponent extends BaseComponent implements OnInit {
     ngOnInit() {
         super.setTitle('Start page');
     }
+
+    test() {
+        // This can be a basic unit test ;)
+        console.log(User.get(1));
+        const user1: User = new User(1);
+        user1.username = 'testuser';
+        const user2: User = new User(2);
+        user2.username = 'testuser2';
+
+        DS.injectMany(User.getCollectionString(), [user1, user2]);
+        console.log(User.getAll());
+        console.log(User.filter(user => user.id === 1));
+
+        DS.eject(User.getCollectionString(), user1.id);
+        console.log(User.getAll());
+        console.log(User.filter(user => user.id === 1));
+        console.log(User.filter(user => user.id === 2));
+    }
 }