BETTEZON-102 (#60)

* BETTERZON-31, dependencies.

* BETTERZON-31: Fixing dependencies

* BETTERZON-31,
BETTERZON-50

info popover and footer had been changed.

* BETTERZON-74

simple top-bar has been created.

* WIP: creating footer using grid.

* BETTERZON-78 adding bottom bar and top bar

* Adding cookieconsent as dependency again since it was removed by a merge

* Adding cookieconsent as dependency again since it was removed by a merge

* Apply suggestions from code review

Switching from single to double quotes

* BETTERZON-78 - grid added, structured as in Adobe XD mockup

* wip: component rewritten, simple grid applied.

Co-authored-by: Patrick Müller <patrick@mueller-patrick.tech>
Co-authored-by: Patrick <50352812+Mueller-Patrick@users.noreply.github.com>

Backend/src/models/prices/price.interface.ts

@@ -4,7 +4,24 @@ export interface Price {
     vendor_id: number;
     price_in_cents: number;
     timestamp: Date;
-    // Only for deals
-    amazonDifference?: number;
-    amazonDifferencePercent?: number;
+}
+
+export class Deal implements Price {
+    price_id: number;
+    product_id: number;
+    vendor_id: number;
+    price_in_cents: number;
+    timestamp: Date;
+    amazonDifference: number;
+    amazonDifferencePercent: number;
+
+    constructor(price_id: number, product_id: number, vendor_id: number, price_in_cents: number, timestamp: Date, amazonDifference: number, amazonDifferencePercent: number) {
+        this.price_id = price_id;
+        this.product_id = product_id;
+        this.vendor_id = vendor_id;
+        this.price_in_cents = price_in_cents;
+        this.timestamp = timestamp;
+        this.amazonDifference = amazonDifference;
+        this.amazonDifferencePercent = amazonDifferencePercent;
+    }
 }

Backend/src/models/prices/prices.service.ts

@@ -15,7 +15,7 @@ const pool = mariadb.createPool({
  * Data Model Interfaces
  */
 
-import {Price} from './price.interface';
+import {Deal, Price} from './price.interface';
 import {Prices} from './prices.interface';
 
 
@@ -255,7 +255,7 @@ export const getBestDeals = async (amount: number): Promise<Prices> => {
         }
 
         // Iterate over all prices to find the products with the biggest difference between amazon and other vendor
-        let deals: Price[] = [];
+        let deals: Deal[] = [];
 
         Object.keys(allPrices).forEach(productId => {
             if (allPrices[parseInt(productId)]) {
@@ -287,7 +287,7 @@ export const getBestDeals = async (amount: number): Promise<Prices> => {
 
                 // Push only deals were the amazon price is actually higher
                 if (deal.amazonDifferencePercent > 0) {
-                    deals.push(deal as Price);
+                    deals.push(deal as Deal);
                 }
             }
         });

Crawler/Crawler.iml

@@ -9,6 +9,5 @@
     <exclude-output />
     <content url="file://$MODULE_DIR$" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="Python 3.9 (venv) interpreter library" level="application" />
   </component>
 </module>

Frontend/angular.json

@@ -24,6 +24,9 @@
                             "src/assets"
                         ],
                         "styles": [
+                            {
+                                "input": "src/themes.scss"
+                            },
                             "./node_modules/@angular/material/prebuilt-themes/deeppurple-amber.css",
                             "src/styles.css",
                             "./node_modules/cookieconsent/build/cookieconsent.min.css"
@@ -88,13 +91,18 @@
                         "tsConfig": "tsconfig.spec.json",
                         "karmaConfig": "karma.conf.js",
                         "codeCoverage": true,
-                        "codeCoverageExclude": ["src/app/mocks/mock.service.ts"],
+                        "codeCoverageExclude": [
+                            "src/app/mocks/mock.service.ts"
+                        ],
                         "assets": [
                             "src/favicon.ico",
                             "src/assets"
                         ],
                         "styles": [
                             "./node_modules/@angular/material/prebuilt-themes/deeppurple-amber.css",
+                            {
+                                "input": "src/themes.scss"
+                            },
                             "src/styles.css",
                             "./node_modules/cookieconsent/build/cookieconsent.min.css"
                         ],

Frontend/package.json

@@ -18,15 +18,19 @@
         "@angular/compiler": "^10.2.3",
         "@angular/core": "^10.2.3",
         "@angular/forms": "^10.2.3",
+        "@angular/localize": "^10.2.3",
         "@angular/material": "~10.2.7",
         "@angular/platform-browser": "^10.2.3",
         "@angular/platform-browser-dynamic": "^10.2.3",
         "@angular/router": "^10.2.3",
+        "@ng-bootstrap/ng-bootstrap": "^8.0.4",
         "apexcharts": "^3.22.3",
+        "bootstrap": "^4.5.0",
         "cookieconsent": "^3.1.1",
         "karma-firefox-launcher": "^2.1.0",
         "ng": "0.0.0",
         "ng-apexcharts": "^1.5.6",
+        "ngx-bootstrap": "^6.2.0",
         "ngx-cookieconsent": "^2.2.3",
         "rxjs": "~6.6.0",
         "tslib": "^2.0.3",
@@ -42,7 +46,7 @@
         "codelyzer": "^6.0.0",
         "jasmine-core": "~3.6.0",
         "jasmine-spec-reporter": "~5.0.0",
-        "karma": "~5.0.0",
+        "karma": "^6.3.2",
         "karma-chrome-launcher": "~3.1.0",
         "karma-coverage-istanbul-reporter": "~3.0.2",
         "karma-jasmine": "~4.0.0",

Frontend/src/app/app.component.css

@@ -0,0 +1 @@
+

Frontend/src/app/app.component.html

@@ -1 +1,13 @@
-<router-outlet></router-outlet>
+<div class="container">
+    <div class="header">
+        <app-top-bar></app-top-bar>
+    </div>
+    <div class="page-content">
+        <router-outlet></router-outlet>
+    </div>
+    <div class="footer">
+        <app-bottom-bar></app-bottom-bar>
+    </div>
+</div>
+
+

Frontend/src/app/app.module.ts

@@ -16,10 +16,22 @@ import {NewestPricesListComponent} from './components/newest-prices-list/newest-
 import {FormsModule} from '@angular/forms';
 import {PageNotFoundPageComponent} from './pages/page-not-found-page/page-not-found-page.component';
 import {MatMenuModule} from '@angular/material/menu';
-import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
+import {BrowserAnimationsModule} from '@angular/platform-browser/animations';
 import {ImprintComponent} from './pages/imprint/imprint.component';
 import {PrivacyComponent} from './pages/privacy/privacy.component';
 import {NgcCookieConsentModule, NgcCookieConsentConfig} from 'ngx-cookieconsent';
+import {MatSlideToggleModule} from '@angular/material/slide-toggle';
+import {TopBarComponent} from './components/top-bar/top-bar.component';
+import {RouterModule} from '@angular/router';
+import {MatButtonModule} from "@angular/material/button";
+import {MatToolbarModule} from '@angular/material/toolbar';
+import {MatIconModule} from '@angular/material/icon';
+import {MatSidenavModule} from '@angular/material/sidenav';
+import {MatListModule} from "@angular/material/list";
+import {BottomBarComponent} from './components/bottom-bar/bottom-bar.component';
+import { HotDealsWidgetComponent } from './components/hot-deals-widget/hot-deals-widget.component';
+import { SliderForProductsComponent } from './components/slider-for-products/slider-for-products.component';
+
 
 // For cookie popup
 const cookieConfig: NgcCookieConsentConfig = {
@@ -73,7 +85,11 @@ const cookieConfig: NgcCookieConsentConfig = {
         NewestPricesListComponent,
         PageNotFoundPageComponent,
         ImprintComponent,
-        PrivacyComponent
+        PrivacyComponent,
+        TopBarComponent,
+        BottomBarComponent,
+        HotDealsWidgetComponent,
+        SliderForProductsComponent
     ],
     imports: [
         BrowserModule,
@@ -83,7 +99,17 @@ const cookieConfig: NgcCookieConsentConfig = {
         FormsModule,
         MatMenuModule,
         BrowserAnimationsModule,
-        NgcCookieConsentModule.forRoot(cookieConfig)
+        NgcCookieConsentModule.forRoot(cookieConfig),
+        MatSlideToggleModule,
+        MatButtonModule,
+        MatToolbarModule,
+        MatSidenavModule,
+        MatListModule,
+        MatButtonModule,
+        MatIconModule,
+        RouterModule.forRoot([
+            {path: '', component: LandingpageComponent},
+        ]),
     ],
     providers: [],
     bootstrap: [AppComponent]

Frontend/src/app/components/bottom-bar/bottom-bar.component.css

@@ -0,0 +1,63 @@
+.bottom-bar-wrapper {
+    display: grid;
+    grid-template-columns: 546px 546px 546px;
+    grid-template-rows: 70px 70px 70px;
+    grid-column-gap: 0px;
+    grid-row-gap: 0px;
+}
+
+.folge-uns-item {
+    grid-column: 2; grid-row: 1;
+    justify-self: center;
+}
+
+.link-items {
+    grid-column: 2; grid-row: 2;
+    justify-self: center;
+}
+
+.footer-links li {
+    display: inline;
+    margin-right: 60px;
+}
+
+#footer-line {
+    grid-area: 3/1/3/4;
+    width: 100%;
+    background-color: #000000;
+    height: 2px;
+}
+
+.bottom-logo {
+    grid-column: 1; grid-row: 3;
+}
+
+.bottom-info {
+    grid-column: 3; grid-row: 3;
+    justify-self: right;
+}
+
+#folge {
+    font-size: 46px;
+    font-weight: bold;
+    color: #E53167;
+    margin-right: 10px;
+}
+
+#uns {
+    font-size: 32px;
+    font-weight: bold;
+    color: #000000;
+}
+
+#better {
+    font-size: 28px;
+    font-weight: bold;
+    color: #3480E3;
+}
+
+#zon {
+    font-size: 28px;
+    font-weight: bold;
+    color: #E53167;
+}

Frontend/src/app/components/bottom-bar/bottom-bar.component.html

@@ -0,0 +1,26 @@
+<div class="bottom-bar-wrapper">
+    <div class="folge-uns-item">
+        <p><span id="folge">FOLGE</span><span id="uns">UNS</span></p>
+    </div>
+    <div class="link-items">
+        <ul style="list-style-type:none" class="footer-links">
+            <li><a href="https://github.com/Mueller-Patrick/Betterzon">GiT</a></li>
+            <li><a href="https://blog.betterzon.xyz/">BLOG</a></li>
+            <li><a href="https://github.com/Mueller-Patrick/Betterzon/wiki">Wiki</a></li>
+        </ul>
+    </div>
+    <div id="footer-line">
+
+    </div>
+    <div class="bottom-logo">
+        <p><span id="better">BETTER</span><span id="zon">ZON</span></p>
+    </div>
+    <div class="bottom-info">
+        <ul style="list-style-type:none" class="footer-links">
+            <li><a>DATENSCHUTZERKLÄRUNG</a></li>
+            <li><a>IMPRESSUM</a></li>
+        </ul>
+    </div>
+</div>
+
+

Frontend/src/app/components/bottom-bar/bottom-bar.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { BottomBarComponent } from "./bottom-bar.component";
+
+describe("BottomBarComponent", () => {
+  let component: BottomBarComponent;
+  let fixture: ComponentFixture<BottomBarComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ BottomBarComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(BottomBarComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

Frontend/src/app/components/bottom-bar/bottom-bar.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-bottom-bar',
+  templateUrl: "./bottom-bar.component.html",
+  styleUrls: ["./bottom-bar.component.css"]
+})
+export class BottomBarComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}

Frontend/src/app/components/footer/footer.component.css

@@ -3,7 +3,7 @@
     left: 0;
     bottom: 0;
     width: 100%;
-    background-color: dimgrey;
+    background-color: #1976d2;
     color: white;
 }
 
@@ -30,5 +30,3 @@
     text-decoration: none;
 }
 
-
-

Frontend/src/app/components/header/header.component.css

@@ -48,3 +48,8 @@
     padding: 10px;
     color: #fff;
 }
+
+.slider {
+    position: relative;
+    margin: auto;
+}

Frontend/src/app/components/header/header.component.html

@@ -7,6 +7,9 @@
         <div class="searchBox">
             <input *ngIf="showSearch===true" type="text" [(ngModel)]="searchInput" placeholder="Search" (keyup.enter)="startedSearch()">
         </div>
+        <div class="slider">
+            <mat-slide-toggle color="primary">dark me</mat-slide-toggle>
+        </div>
         <div class="profileIcon">
             <button mat-button [matMenuTriggerFor]="menu">Menu</button>
             <mat-menu #menu="matMenu">

Frontend/src/app/components/hot-deals-widget/hot-deals-widget.component.css

@@ -0,0 +1,72 @@
+.hot-deal-widget-wrapper{
+    width: 1640px;
+    height: 820px;
+    background-color: #f8f9fa;
+    display: grid;
+    grid-template-columns: repeat(2, 1fr);
+    grid-column-gap: 0px;
+    grid-row-gap: 0px;
+    align-items: center;
+}
+
+.product-description {
+    /*background-color: #3480E3;*/
+    height: 100%;
+    display: grid;
+    grid-template-columns: 15% 16px 15% 16px 15% 16px 15% 16px 15% 16px 15% 8px;
+    grid-template-rows: repeat(5, 1fr);
+}
+
+.product-image {
+
+}
+
+#hot-deals{
+    /*background-color: #E53167;*/
+    justify-self: center;
+    align-self: center;
+    grid-column: 3/10;
+    grid-row: 1/2;
+}
+
+#product-name {
+    justify-self: center;
+    align-self: center;
+    grid-column: 3/10;
+    grid-row: 2/3;
+    /*background-color: #E53167;*/
+}
+
+#product-name > p {
+    font-size: 65px;
+}
+
+#sales {
+    justify-self: center;
+    align-self: center;
+    grid-column: 3/10;
+    grid-row: 3/4;
+    /*background-color: #E53167;*/
+}
+
+#futher-informations {
+    justify-self: center;
+    align-self: center;
+    grid-column: 3/10;
+    grid-row: 4/5;
+    /*background-color: #E53167;*/
+}
+
+#points {
+    justify-self: center;
+    align-self: start;
+    grid-column: 3/10;
+    grid-row: 5/6;
+    /*background-color: #E53167;*/
+}
+
+.product-image {
+    display: grid;
+    justify-content: center;
+}
+

Frontend/src/app/components/hot-deals-widget/hot-deals-widget.component.html

@@ -0,0 +1,23 @@
+<div class="hot-deal-widget-wrapper">
+    <div class="product-description">
+        <div id="hot-deals">
+            <h1>HOT DEALS</h1>
+        </div>
+        <div id="product-name">
+            <h1>Neues Apple iPhone 12 Pro <br> (512 GB) - Graphit</h1>
+        </div>
+        <div id="sales">
+            SPARE BIS ZU 7%!
+        </div>
+        <div id="futher-informations">
+            Weitere Informationen
+        </div>
+        <div id="points">
+            points
+        </div>
+    </div>
+    <div class="product-image">
+        <img src="assets/images/iphone-12-pro-silver-hero.png" height="771">
+    </div>
+</div>
+

Frontend/src/app/components/hot-deals-widget/hot-deals-widget.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { HotDealsWidgetComponent } from './hot-deals-widget.component';
+
+describe('HotDealsWidgetComponent', () => {
+  let component: HotDealsWidgetComponent;
+  let fixture: ComponentFixture<HotDealsWidgetComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ HotDealsWidgetComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(HotDealsWidgetComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

Frontend/src/app/components/hot-deals-widget/hot-deals-widget.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-hot-deals-widget',
+  templateUrl: './hot-deals-widget.component.html',
+  styleUrls: ['./hot-deals-widget.component.css']
+})
+export class HotDealsWidgetComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}

Frontend/src/app/components/slider-for-products/slider-for-products.component.html

@@ -0,0 +1 @@
+<p>slider-for-products works!</p>

Frontend/src/app/components/slider-for-products/slider-for-products.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { SliderForProductsComponent } from './slider-for-products.component';
+
+describe('SliderForProductsComponent', () => {
+  let component: SliderForProductsComponent;
+  let fixture: ComponentFixture<SliderForProductsComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ SliderForProductsComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(SliderForProductsComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

Frontend/src/app/components/slider-for-products/slider-for-products.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-slider-for-products',
+  templateUrl: './slider-for-products.component.html',
+  styleUrls: ['./slider-for-products.component.css']
+})
+export class SliderForProductsComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}

Frontend/src/app/components/top-bar/top-bar.component.css

@@ -0,0 +1,54 @@
+.top-bar-wrapper {
+    display: grid;
+    grid-template-columns: 200px 360px 820px 20px 250px;
+    grid-template-rows: 40px;
+    grid-column-gap: 0px;
+    grid-row-gap: 0px;
+    align-items: center;
+}
+
+.top-logo {
+    grid-area: 1/1;
+}
+
+#better {
+    font-size: 28px;
+    font-weight: bold;
+    color: #3480E3;
+}
+
+#zon {
+    font-size: 28px;
+    font-weight: bold;
+    color: #E53167;
+}
+
+.search-button {
+    /*background-color: #E53167;*/
+}
+
+.sign-up {
+    /*background-color: #E53167;*/
+    margin-left: 50px;
+    margin-right: 25px;
+}
+
+.login {
+    margin-right: 25px;
+}
+
+#signin {
+    border-radius: 25px;
+    background-color: #E53167;
+}
+
+._links > a {
+    /*background-color: #E53167;*/
+    margin-left: 10px;
+    margin-right: 10px;
+}
+
+._signing_links > a {
+    /*background-color: #E53167;*/
+    margin-left: 50px;
+}

Frontend/src/app/components/top-bar/top-bar.component.html

@@ -0,0 +1,26 @@
+<div class="top-bar-wrapper">
+    <div class="<top-logo>">
+        <a><span id="better">BETTER</span><span id="zon">ZON</span></a>
+    </div>
+    <div class="links">
+        <nav class="_links">
+            <a>KONTAKTIERE UNS</a>
+            <a>KUNDEN</a>
+            <a>FAQ</a>
+        </nav>
+    </div>
+    <div class="footer_space">
+
+    </div>
+    <div class="search-button">
+        <a>
+            <img src="assets/images/search_black_24dp.svg" alt="Sarch button">
+        </a>
+    </div>
+    <div class="links">
+        <nav class="_signing_links">
+            <a>SIGN UP</a>
+            <a><span id="signin">SIGN IN</span></a>
+        </nav>
+    </div>
+</div>

Frontend/src/app/components/top-bar/top-bar.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { TopBarComponent } from './top-bar.component';
+
+describe('TopBarComponent', () => {
+  let component: TopBarComponent;
+  let fixture: ComponentFixture<TopBarComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ TopBarComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(TopBarComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

Frontend/src/app/components/top-bar/top-bar.component.ts

@@ -0,0 +1,17 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-top-bar',
+  templateUrl: './top-bar.component.html',
+  styleUrls: ['./top-bar.component.css']
+})
+export class TopBarComponent implements OnInit {
+
+  sidenav: any;
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}

Frontend/src/app/pages/landingpage/landingpage.component.html

@@ -1,5 +1,6 @@
-<app-header [showSearch]="false"></app-header>
-<div id="mainComponents">
+<app-hot-deals-widget></app-hot-deals-widget>
+
+<!--<div id="mainComponents">
     <div id="searchContainer">
         <input type="text" [(ngModel)]="searchInput" placeholder="Search" (keyup.enter)="startedSearch()">
     </div>
@@ -15,4 +16,4 @@
         </div>
     </div>
 </div>
-<app-footer></app-footer>
+-->

Frontend/src/app/pages/product-detail-page/product-detail-page.component.html

@@ -1,4 +1,3 @@
-<app-header [showSearch]="true"></app-header>
 <div id="mainComponents">
     <app-product-details [productId]="productId"></app-product-details>
     <app-newest-prices-list [productId]="productId"></app-newest-prices-list>

Frontend/src/app/pages/product-search-page/product-search-page.component.html

@@ -1,6 +1,6 @@
-<app-header [showSearch]="true"></app-header>
 <div id="mainComponents">
     <app-product-list numberOfProducts="20" [showProductPicture]="true" searchQuery="{{searchTerm}}"
                       type="search"></app-product-list>
 </div>
+
 <app-footer></app-footer>

Frontend/src/app/services/api.service.ts

@@ -18,116 +18,191 @@ export class ApiService {
     ) {
     }
 
+
+    /*   ____                 __           __
+        / __ \_________  ____/ /_  _______/ /______
+       / /_/ / ___/ __ \/ __  / / / / ___/ __/ ___/
+      / ____/ /  / /_/ / /_/ / /_/ / /__/ /_(__  )
+     /_/   /_/   \____/\__,_/\__,_/\___/\__/____/
+    */
+
+    /**
+     * Gets the specified product from the API
+     * @param id The id of the product to get
+     * @return Observable<Product> An observable containing a single product
+     */
     getProduct(id): Observable<Product> {
         try {
-            const prod = this.http.get<Product>((this.apiUrl + '/products/' + id));
-            return prod;
+            return this.http.get<Product>((this.apiUrl + '/products/' + id));
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+
+    /**
+     * Gets a list of products that match the given search term
+     * @param query The search term to match
+     * @return Observable<Product[]> An observable list of products
+     */
     getProductsByQuery(query): Observable<Product[]> {
         try {
-            const prods = this.http.get<Product[]>((this.apiUrl + '/products/search/' + query));
-            return prods;
+            return this.http.get<Product[]>((this.apiUrl + '/products/search/' + query));
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+    /**
+     * Gets a list of all products
+     * @return Observable<Product[]> An observable list of products
+     */
     getProducts(): Observable<Product[]> {
         try {
-            const prods = this.http.get<Product[]>((this.apiUrl + '/products'));
-            return prods;
+            return this.http.get<Product[]>((this.apiUrl + '/products'));
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+
+    /*    ____       _
+         / __ \_____(_)_______  _____
+        / /_/ / ___/ / ___/ _ \/ ___/
+       / ____/ /  / / /__/  __(__  )
+      /_/   /_/  /_/\___/\___/____/
+     */
+
+    /**
+     * Gets a list of all prices
+     * @return Observable<Price[]> An observable list of prices
+     */
     getPrices(): Observable<Price[]> {
         try {
-            const prices = this.http.get<Price[]>((this.apiUrl + '/prices'));
-            return prices;
+            return this.http.get<Price[]>((this.apiUrl + '/prices'));
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+    /**
+     * Gets the lowest prices of every vendor for the given product
+     * @param productId The product id of the product to fetch the prices for
+     * @return Observable<Price[]> An observable list of prices
+     */
     getLowestPrices(productId): Observable<Price[]> {
         try {
             let params = new HttpParams();
             params = params.append('product', productId);
             params = params.append('type', 'lowest');
-            const prices = this.http.get<Price[]>((this.apiUrl + '/prices'), {params});
-            return prices;
+            return this.http.get<Price[]>((this.apiUrl + '/prices'), {params});
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+    /**
+     * Gets the latest amazon price for the given product
+     * @param productId The product id of the product to get the price for
+     * @return Observable<Price> An observable containing a single price
+     */
     getAmazonPrice(productId): Observable<Price> {
         try {
             let params = new HttpParams();
             params = params.append('product', productId);
             params = params.append('vendor', '1');
             params = params.append('type', 'newest');
-            const price = this.http.get<Price>((this.apiUrl + '/prices'), {params});
-            return price;
+            return this.http.get<Price>((this.apiUrl + '/prices'), {params});
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+    /**
+     * Gets the newest prices of every vendor for the given product
+     * @param productId The product id of the product to fetch the prices for
+     * @return Observable<Price[]> An observable list of prices
+     */
     getCurrentPricePerVendor(productId): Observable<Price[]> {
         try {
             let params = new HttpParams();
             params = params.append('product', productId);
             params = params.append('type', 'newest');
-            const prices = this.http.get<Price[]>((this.apiUrl + '/prices'), {params});
-            return prices;
+            return this.http.get<Price[]>((this.apiUrl + '/prices'), {params});
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+
+    /*  _    __               __
+       | |  / /__  ____  ____/ /___  __________
+       | | / / _ \/ __ \/ __  / __ \/ ___/ ___/
+       | |/ /  __/ / / / /_/ / /_/ / /  (__  )
+       |___/\___/_/ /_/\__,_/\____/_/  /____/
+     */
+
+    /**
+     * Gets a list of all vendors
+     * @return Observable<Vendor[]> An observable list of vendors
+     */
     getVendors(): Observable<Vendor[]> {
         try {
-            const vendors = this.http.get<Vendor[]>((this.apiUrl + '/vendors'));
-            return vendors;
+            return this.http.get<Vendor[]>((this.apiUrl + '/vendors'));
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+
+    /*     ____       _              ___    __
+          / __ \_____(_)_______     /   |  / /___ __________ ___  _____
+         / /_/ / ___/ / ___/ _ \   / /| | / / __ `/ ___/ __ `__ \/ ___/
+        / ____/ /  / / /__/  __/  / ___ |/ / /_/ / /  / / / / / (__  )
+       /_/   /_/  /_/\___/\___/  /_/  |_/_/\__,_/_/  /_/ /_/ /_/____/
+     */
+
+    /**
+     * Gets a list of all price alarms
+     * @return Observable<PriceAlarm[]> An observable list of price alarms
+     */
     getPriceAlarms(): Observable<PriceAlarm[]> {
         try {
-            const alarms = this.http.get<PriceAlarm[]>((this.apiUrl + '/pricealarms'));
-            return alarms;
+            return this.http.get<PriceAlarm[]>((this.apiUrl + '/pricealarms'));
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+    /**
+     * Creates a new price alarm
+     * @param productId The product id of the product to create the alarm for
+     * @param definedPrice The defined target price
+     * @return Observable<any> The observable response of the api
+     */
     createPriceAlarms(productId: number, definedPrice: number): Observable<any> {
         try {
-            const res = this.http.post((this.apiUrl + '/pricealarms'), JSON.stringify({
+            return this.http.post((this.apiUrl + '/pricealarms'), JSON.stringify({
                 product_id: productId,
                 defined_price: definedPrice
             }));
-            return res;
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }
     }
 
+    /**
+     * Updates the given price alarm
+     * @param alarmId The alarm id of the alarm to update
+     * @param definedPrice The defined target price
+     * @return Observable<any> The observable response of the api
+     */
     updatePriceAlarms(alarmId: number, definedPrice: number): Observable<any> {
         try {
-            const res = this.http.put((this.apiUrl + '/pricealarms'), JSON.stringify({
+            return this.http.put((this.apiUrl + '/pricealarms'), JSON.stringify({
                 alarm_id: alarmId,
                 defined_price: definedPrice
             }));
-            return res;
         } catch (exception) {
             process.stderr.write(`ERROR received from ${this.apiUrl}: ${exception}\n`);
         }

Frontend/src/assets/images/search_black_24dp.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="18px" viewBox="0 0 24 24" width="24px" fill="#000000"><path d="M0 0h24v24H0z" fill="none"/><path d="M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z"/></svg>

Frontend/src/styles.css

@@ -1,9 +1,169 @@
-/* You can add global styles to this file, and also import other style files */
-body {
-    margin: 0;
-    font-family: sans-serif;
-    margin-bottom: 10em;
+/* general settings */
+
+* {
+    box-sizing: border-box;
 }
 
-html, body { height: 100%; }
-body { margin: 0; font-family: Roboto, "Helvetica Neue", sans-serif; }
+html, body {
+    height: 100%;
+    margin: 0;
+    background-color: #FFFFFF;
+}
+
+/* Text */
+
+h1 {
+    font-size: 32px;
+}
+
+h2 {
+    font-size: 20px;
+}
+
+h1, h2 {
+    font-weight: lighter;
+}
+
+h3 {
+    font-size: 18px;
+}
+
+p {
+    font-size: 14px;
+}
+
+/* Hyperlink */
+
+a {
+    cursor: pointer;
+    color: #000000;
+    text-decoration: none;
+}
+
+a:hover {
+    opacity: 0.8;
+    color: #3480E3;
+}
+
+a, p{
+    font-size: 16px;
+}
+
+/* links */
+
+/* Input */
+
+input {
+    font-size: 14px;
+    border-radius: 2px;
+    padding: 8px;
+    margin-bottom: 16px;
+    border: 1px solid #BDBDBD;
+}
+
+label {
+    font-size: 12px;
+    font-weight: bold;
+    margin-bottom: 4px;
+    display: block;
+    text-transform: uppercase;
+}
+
+/* Button */
+.button, button {
+    display: inline-flex;
+    align-items: center;
+    padding: 8px 16px;
+    border-radius: 2px;
+    font-size: 14px;
+    cursor: pointer;
+    background-color: #1976d2;
+    color: white;
+    border: none;
+}
+
+.button:hover, button:hover {
+    opacity: 0.8;
+    font-weight: normal;
+}
+
+.button:disabled, button:disabled {
+    opacity: 0.5;
+    cursor: auto;
+}
+
+/* Fancy Button */
+
+.fancy-button {
+    background-color: white;
+    color: #1976d2;
+}
+
+.fancy-button i.material-icons {
+    color: #1976d2;
+    padding-right: 4px;
+}
+
+/* Main Container */
+
+.container {
+    position: fixed;
+    left: 50%;
+    margin-left: -820px;
+    width: 1640px;
+    height: auto;
+    display: grid;
+    grid-template-rows: 70px auto 210px;
+}
+
+.header {
+    grid-row: 1/2;
+}
+
+.page-content {
+    grid-row: 2/3;
+}
+
+.footer {
+    grid-row: 3/4;
+}
+
+/* End of Main Container */
+
+/* Top Bar */
+
+app-top-bar {
+    width: 1640px;
+    height: 70px;
+    background-color: #ffffff;
+    padding: 16px;
+    position: fixed;
+    left: 50%;
+    top:0;
+    margin-left: -820px;
+    display: flex;
+    flex-direction: row;
+    justify-content: space-between;
+    align-items: center;
+    /*box-shadow: 0 3px 5px -1px rgba(0,0,0,.2),0 6px 10px 0 rgba(0,0,0,.14),0 1px 18px 0 rgba(0,0,0,.12)*/
+}
+
+app-top-bar h1 {
+    color: white;
+    margin: 0;
+}
+
+/* Bottom Bar */
+app-bottom-bar{
+    background-color: #F8F8F8;
+    width: 1640px;
+    height: 210px;
+    position: fixed;
+    margin-top: 90px;
+    bottom: 0;
+    flex-direction: row;
+    display: flex;
+    justify-content: space-between;
+}
+
+

Frontend/src/themes.scss

@@ -0,0 +1,15 @@
+@import '~@angular/material/theming';
+
+@include mat-core();
+
+$themes_primary: mat-palette($mat-green);
+$themes_accent:  mat-palette($mat-pink, A200, A100, A400);
+
+$themes_theme: mat-light-theme((
+    color: (
+        primary: $themes_primary,
+        accent: $themes_accent,
+    )
+));
+
+@include angular-material-theme($themes_theme);