ready

.editorconfig

@@ -0,0 +1,13 @@
+# 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
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false

.gitignore

@@ -0,0 +1,46 @@
+# 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
+speed-measure-plugin.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

@@ -0,0 +1,38 @@
+# CurrencyConverter
+
+This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 8.0.6.
+
+## Prerequisites
+- npm - Package Manager
+- Node.js
+- Angular CLI
+
+## Setup and installation
+- Clone the repository.
+- Navigate to root project folder using any command line interface (e.g. Command Prompt on Windows). 
+- Run `npm install` to install packages.
+- Run development server.
+
+## 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. Use the `--prod` flag for a production build.
+
+## 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 [Protractor](http://www.protractortest.org/).
+
+## Further help
+
+To get more help on the Angular CLI use `ng help` or go check out the [Angular CLI README](https://github.com/angular/angular-cli/blob/master/README.md).

angular.json

@@ -0,0 +1,124 @@
+{
+  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "version": 1,
+  "newProjectRoot": "projects",
+  "projects": {
+    "currency-converter": {
+      "projectType": "application",
+      "schematics": {
+        "@schematics/angular:component": {
+          "style": "scss"
+        }
+      },
+      "root": "",
+      "sourceRoot": "src",
+      "prefix": "app",
+      "architect": {
+        "build": {
+          "builder": "@angular-devkit/build-angular:browser",
+          "options": {
+            "outputPath": "dist/currency-converter",
+            "index": "src/index.html",
+            "main": "src/main.ts",
+            "polyfills": "src/polyfills.ts",
+            "tsConfig": "tsconfig.app.json",
+            "aot": false,
+            "assets": [
+              "src/favicon.ico",
+              "src/assets"
+            ],
+            "styles": [
+              "src/styles.scss"
+            ],
+            "scripts": []
+          },
+          "configurations": {
+            "production": {
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.prod.ts"
+                }
+              ],
+              "optimization": true,
+              "outputHashing": "all",
+              "sourceMap": false,
+              "extractCss": true,
+              "namedChunks": false,
+              "aot": true,
+              "extractLicenses": true,
+              "vendorChunk": false,
+              "buildOptimizer": true,
+              "budgets": [
+                {
+                  "type": "initial",
+                  "maximumWarning": "2mb",
+                  "maximumError": "5mb"
+                }
+              ]
+            }
+          }
+        },
+        "serve": {
+          "builder": "@angular-devkit/build-angular:dev-server",
+          "options": {
+            "browserTarget": "currency-converter:build"
+          },
+          "configurations": {
+            "production": {
+              "browserTarget": "currency-converter:build:production"
+            }
+          }
+        },
+        "extract-i18n": {
+          "builder": "@angular-devkit/build-angular:extract-i18n",
+          "options": {
+            "browserTarget": "currency-converter: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.scss"
+            ],
+            "scripts": []
+          }
+        },
+        "lint": {
+          "builder": "@angular-devkit/build-angular:tslint",
+          "options": {
+            "tsConfig": [
+              "tsconfig.app.json",
+              "tsconfig.spec.json",
+              "e2e/tsconfig.json"
+            ],
+            "exclude": [
+              "**/node_modules/**"
+            ]
+          }
+        },
+        "e2e": {
+          "builder": "@angular-devkit/build-angular:protractor",
+          "options": {
+            "protractorConfig": "e2e/protractor.conf.js",
+            "devServerTarget": "currency-converter:serve"
+          },
+          "configurations": {
+            "production": {
+              "devServerTarget": "currency-converter:serve:production"
+            }
+          }
+        }
+      }
+    }},
+  "defaultProject": "currency-converter"
+}

browserslist

@@ -0,0 +1,12 @@
+# 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
+
+# You can see what browsers were selected by your queries by running:
+#   npx browserslist
+
+> 0.5%
+last 2 versions
+Firefox ESR
+not dead
+not IE 9-11 # For IE 9-11 support, remove 'not'.

e2e/protractor.conf.js

@@ -0,0 +1,32 @@
+// @ts-check
+// Protractor configuration file, see link for more information
+// https://github.com/angular/protractor/blob/master/lib/config.ts
+
+const { SpecReporter } = require('jasmine-spec-reporter');
+
+/**
+ * @type { import("protractor").Config }
+ */
+exports.config = {
+  allScriptsTimeout: 11000,
+  specs: [
+    './src/**/*.e2e-spec.ts'
+  ],
+  capabilities: {
+    'browserName': 'chrome'
+  },
+  directConnect: true,
+  baseUrl: 'http://localhost:4200/',
+  framework: 'jasmine',
+  jasmineNodeOpts: {
+    showColors: true,
+    defaultTimeoutInterval: 30000,
+    print: function() {}
+  },
+  onPrepare() {
+    require('ts-node').register({
+      project: require('path').join(__dirname, './tsconfig.json')
+    });
+    jasmine.getEnv().addReporter(new SpecReporter({ spec: { displayStacktrace: true } }));
+  }
+};

e2e/src/app.e2e-spec.ts

@@ -0,0 +1,23 @@
+import { AppPage } from './app.po';
+import { browser, logging } from 'protractor';
+
+describe('workspace-project App', () => {
+  let page: AppPage;
+
+  beforeEach(() => {
+    page = new AppPage();
+  });
+
+  it('should display welcome message', () => {
+    page.navigateTo();
+    expect(page.getTitleText()).toEqual('Welcome to currency-converter!');
+  });
+
+  afterEach(async () => {
+    // Assert that there are no errors emitted from the browser
+    const logs = await browser.manage().logs().get(logging.Type.BROWSER);
+    expect(logs).not.toContain(jasmine.objectContaining({
+      level: logging.Level.SEVERE,
+    } as logging.Entry));
+  });
+});

e2e/src/app.po.ts

@@ -0,0 +1,11 @@
+import { browser, by, element } from 'protractor';
+
+export class AppPage {
+  navigateTo() {
+    return browser.get(browser.baseUrl) as Promise<any>;
+  }
+
+  getTitleText() {
+    return element(by.css('app-root h1')).getText() as Promise<string>;
+  }
+}

e2e/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../out-tsc/e2e",
+    "module": "commonjs",
+    "target": "es5",
+    "types": [
+      "jasmine",
+      "jasminewd2",
+      "node"
+    ]
+  }
+}

karma.conf.js

@@ -0,0 +1,32 @@
+// 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-istanbul-reporter'),
+      require('@angular-devkit/build-angular/plugins/karma')
+    ],
+    client: {
+      clearContext: false // leave Jasmine Spec Runner output visible in browser
+    },
+    coverageIstanbulReporter: {
+      dir: require('path').join(__dirname, './coverage/currency-converter'),
+      reports: ['html', 'lcovonly', 'text-summary'],
+      fixWebpackSourcePaths: true
+    },
+    reporters: ['progress', 'kjhtml'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    singleRun: false,
+    restartOnFileChange: true
+  });
+};

package.json

@@ -0,0 +1,51 @@
+{
+  "name": "currency-converter",
+  "version": "0.0.0",
+  "scripts": {
+    "ng": "ng",
+    "start": "ng serve",
+    "build": "ng build",
+    "test": "ng test",
+    "lint": "ng lint",
+    "e2e": "ng e2e"
+  },
+  "private": true,
+  "dependencies": {
+    "@angular/animations": "^8.0.3",
+    "@angular/cdk": "^8.1.1",
+    "@angular/common": "~8.0.3",
+    "@angular/compiler": "~8.0.3",
+    "@angular/core": "^8.0.3",
+    "@angular/flex-layout": "^8.0.0-beta.26",
+    "@angular/forms": "~8.0.3",
+    "@angular/material": "^8.1.1",
+    "@angular/platform-browser": "~8.0.3",
+    "@angular/platform-browser-dynamic": "~8.0.3",
+    "@angular/router": "~8.0.3",
+    "hammerjs": "^2.0.8",
+    "rxjs": "~6.4.0",
+    "tslib": "^1.9.0",
+    "zone.js": "~0.9.1"
+  },
+  "devDependencies": {
+    "@angular-devkit/build-angular": "~0.800.6",
+    "@angular/cli": "~8.0.6",
+    "@angular/compiler-cli": "~8.0.3",
+    "@angular/language-service": "~8.0.3",
+    "@types/jasmine": "~3.3.8",
+    "@types/jasminewd2": "~2.0.3",
+    "@types/node": "~8.9.4",
+    "codelyzer": "^5.0.0",
+    "jasmine-core": "~3.4.0",
+    "jasmine-spec-reporter": "~4.2.1",
+    "karma": "~4.1.0",
+    "karma-chrome-launcher": "~2.2.0",
+    "karma-coverage-istanbul-reporter": "~2.0.1",
+    "karma-jasmine": "~2.0.1",
+    "karma-jasmine-html-reporter": "^1.4.0",
+    "protractor": "~5.4.0",
+    "ts-node": "~7.0.0",
+    "tslint": "~5.15.0",
+    "typescript": "~3.4.3"
+  }
+}

src/app/about/about-routing.module.ts

@@ -0,0 +1,16 @@
+import { NgModule } from '@angular/core';
+import { Routes, RouterModule } from '@angular/router';
+import { AboutComponent } from './about.component';
+
+const routes: Routes = [
+  {
+    path: '',
+    component: AboutComponent
+  }
+];
+
+@NgModule({
+  imports: [RouterModule.forChild(routes)],
+  exports: [RouterModule]
+})
+export class AboutRoutingModule { }

src/app/about/about.component.html

@@ -0,0 +1,54 @@
+<article itemprop="text">
+  <p>Angular Currency Converter/Calculator</p>
+  <p>Working with latest Angular 8.</p>
+  <p>This project was generated with <a href="https://github.com/angular/angular-cli">Angular CLI</a> version 8.0.6.</p>
+
+  <h1>Currency Converter/Calculator</h1>
+  <p>Used localStorage to limit number of requests to api endpoint.</p>
+  <p>Default base conversion currency is EUR (Euro)</p>
+  <h2>Prerequisites</h2>
+  <ul>
+    <li><a href="https://www.npmjs.com/">npm - Package Manager</a></li>
+    <li><a href="https://nodejs.org/en/">Node.js</a></li>
+    <li><a href="https://github.com/angular/angular-cli">Angular CLI</a></li>
+  </ul>
+  <h2>Setup and installation</h2>
+  <ol>
+    <li>Clone the repository.</li>
+    <li>Navigate to root project folder using any command line interface (e.g. Command Prompt on Windows).</li>
+    <li>Run <code>npm install</code> to install packages.</li>
+    <li>Run development server.</li>
+  </ol>
+  <h2>Development server</h2>
+  <p>Run <code>ng serve</code> for a dev server. Navigate to <code>http://localhost:4200/</code>.</p>
+  <h2>Project structure</h2>
+  <p><code>/src</code> - source folder, has the general Angular CLI project structure.</p>
+  <ul>
+    <li><code>/app</code> - contains AppComponent along with the following subfolders:
+      <ul>
+        <li><code>/currency-converter</code> - Currency Converter feature module and related components, models, etc..</li>
+        <li><code>/exchange-rates</code> - Exchange Rates feature module and related components, models, etc..</li>
+        <li><code>/about</code> - About feature Module, contains component/page with instructions for setup and installation</li>
+        <li><code>/shared</code> - Shared Module, contains shared services and other shared elements</li>
+      </ul>
+    </li>
+  </ul>
+  <h2>Usage</h2>
+  <p>On first load, application displays welcome message.</p>
+  <p>On successful load, application navigates user automatically to Exchange Rates page where user can select base
+    currency and filter quote currencies.</p>
+  <p>Clicking on quote currency navigates user to Currency Converter where user can enter desired amount to convert.
+    Currency select form fields are prepopulated but user can make its own selection of currency.</p>
+  <p>Clicking on Convert button Conversion Details section is displayed with resulting amount and exchange rates of
+    selected
+    currencies.</p>
+  <p>Additionaly, user can swap currencies by clicking on Reverse icon button located between currency select form
+    fields.</p>
+  <h2>To Do</h2>
+  <ul>
+    <li>Unit test application components/services</li>
+    <li>Implement cache</li>
+    <li>Implement Validators and Error Handlers</li>
+    <li>Extract Util functions and reusable components</li>
+  </ul>
+</article>

src/app/about/about.component.scss

@@ -0,0 +1,3 @@
+article {
+  padding: 24px;
+}

src/app/about/about.component.spec.ts

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

src/app/about/about.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-about',
+  templateUrl: './about.component.html',
+  styleUrls: ['./about.component.scss']
+})
+export class AboutComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit() {
+  }
+
+}

src/app/about/about.module.ts

@@ -0,0 +1,13 @@
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { AboutComponent } from './about.component';
+import { AboutRoutingModule } from './about-routing.module';
+
+@NgModule({
+  declarations: [AboutComponent],
+  imports: [
+    CommonModule,
+    AboutRoutingModule
+  ]
+})
+export class AboutModule { }

src/app/app-routing.module.ts

@@ -0,0 +1,28 @@
+import { NgModule } from '@angular/core';
+import { Routes, RouterModule } from '@angular/router';
+
+const routes: Routes = [
+  {
+    path: 'currency-converter',
+    loadChildren: () => import('./currency-converter/currency-converter.module').then(mod => mod.CurrencyConverterModule)
+  },
+  {
+    path: 'exchange-rates',
+    loadChildren: () => import('./exchange-rates/exchange-rates.module').then(mod => mod.ExchangeRatesModule)
+  },
+  {
+    path: 'about',
+    loadChildren: () => import('./about/about.module').then(mod => mod.AboutModule)
+  },
+  {
+    path: '',
+    redirectTo: 'exchange-rates',
+    pathMatch: 'full'
+  }
+];
+
+@NgModule({
+  imports: [RouterModule.forRoot(routes)],
+  exports: [RouterModule]
+})
+export class AppRoutingModule { }

src/app/app.component.html

@@ -0,0 +1,19 @@
+<mat-toolbar color="primary">
+  <div fxFlex fxLayoutGap="25px">
+    <a routerLink="/currency-converter">
+      Currency Converter
+    </a>
+    <a class="exchange-link" routerLink="/exchange-rates">Browse currency exchange rates</a>
+  </div>
+  <div fxFlex fxLayout fxLayoutAlign="flex-end" fxHide.xs>
+    <ul fxLayout fxLayoutGap="20px" class="navigation-items">
+      <li>
+        <a routerLink="/about">
+          <span class="label">About</span>
+        </a>
+      </li>
+    </ul>
+  </div>
+</mat-toolbar>
+
+<router-outlet></router-outlet>

src/app/app.component.scss

@@ -0,0 +1,48 @@
+mat-sidenav-container,
+mat-sidenav-content,
+mat-sidenav {
+  height: 100%;
+}
+
+mat-sidenav {
+  width: 250px;
+}
+
+a {
+  text-decoration: none;
+  color: white;
+}
+
+a:hover,
+a:active {
+  color: lightgray;
+}
+
+.navigation-items {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+  cursor: pointer;
+}
+
+.icon {
+  display: inline-block;
+  height: 30px;
+  margin: 0 auto;
+  padding-right: 5px;
+  text-align: center;
+  vertical-align: middle;
+  width: 15%;
+}
+
+.label {
+  display: inline-block;
+  line-height: 30px;
+  margin: 0;
+  width: 85%;
+}
+
+a.exchange-link {
+  font-size: 14px;
+  padding-bottom: 6px;
+}

src/app/app.component.spec.ts

@@ -0,0 +1,35 @@
+import { TestBed, async } from '@angular/core/testing';
+import { RouterTestingModule } from '@angular/router/testing';
+import { AppComponent } from './app.component';
+
+describe('AppComponent', () => {
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        RouterTestingModule
+      ],
+      declarations: [
+        AppComponent
+      ],
+    }).compileComponents();
+  }));
+
+  it('should create the app', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.debugElement.componentInstance;
+    expect(app).toBeTruthy();
+  });
+
+  it(`should have as title 'currency-converter'`, () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.debugElement.componentInstance;
+    expect(app.title).toEqual('currency-converter');
+  });
+
+  it('should render title in a h1 tag', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    fixture.detectChanges();
+    const compiled = fixture.debugElement.nativeElement;
+    expect(compiled.querySelector('h1').textContent).toContain('Welcome to currency-converter!');
+  });
+});

src/app/app.component.ts

@@ -0,0 +1,10 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-root',
+  templateUrl: './app.component.html',
+  styleUrls: ['./app.component.scss']
+})
+export class AppComponent {
+  title = 'Currency Converter';
+}

src/app/app.module.ts

@@ -0,0 +1,34 @@
+import { BrowserModule } from '@angular/platform-browser';
+import { NgModule } from '@angular/core';
+
+import { AppRoutingModule } from './app-routing.module';
+import { AppComponent } from './app.component';
+import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
+import {
+  MatSidenavModule,
+  MatIconModule,
+  MatToolbarModule,
+  MatListModule
+} from '@angular/material';
+import { FlexLayoutModule } from '@angular/flex-layout';
+import { CurrencyConverterModule } from './currency-converter/currency-converter.module';
+
+@NgModule({
+  declarations: [AppComponent],
+  imports: [
+    BrowserModule,
+    BrowserAnimationsModule,
+    AppRoutingModule,
+
+    FlexLayoutModule,
+
+    MatSidenavModule,
+    MatIconModule,
+    MatToolbarModule,
+    MatListModule,
+
+    CurrencyConverterModule
+  ],
+  bootstrap: [AppComponent]
+})
+export class AppModule {}

src/app/currency-converter/components/conversion-details/conversion-details.component.html

@@ -0,0 +1,18 @@
+<mat-card *ngIf="result">
+  <div fxLayout="row" fxLayoutAlign="center">
+    <h3>{{ amount }} {{ fromCurrency | uppercase }} = {{ result | number: '1.5-5' }}
+      {{ toCurrency | uppercase }}
+    </h3>
+  </div>
+  <div fxLayout="column" fxLayoutAlign="center center">
+    <p>
+      1 {{ fromCurrency | uppercase }}
+      =
+      {{ (+toRate / +fromRate) | number: '1.5-5' }} {{ toCurrency | uppercase }}
+    </p>
+    <p>
+      1 {{ toCurrency | uppercase }} = {{ (+fromRate / +toRate) | number: '1.5-5' }}
+      {{ fromCurrency | uppercase }}
+    </p>
+  </div>
+</mat-card>

src/app/currency-converter/components/conversion-details/conversion-details.component.spec.ts

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

src/app/currency-converter/components/conversion-details/conversion-details.component.ts

@@ -0,0 +1,31 @@
+import { Component, OnInit, Input, OnChanges, SimpleChange, SimpleChanges } from '@angular/core';
+import { MappedCurrencyRate } from 'src/app/shared/interfaces/currency-rate';
+
+@Component({
+  selector: 'app-conversion-details',
+  templateUrl: './conversion-details.component.html',
+  styleUrls: ['./conversion-details.component.scss']
+})
+export class ConversionDetailsComponent implements OnChanges {
+  @Input() amount: number;
+  @Input() result: number;
+
+  @Input() fromCurrencyRate: MappedCurrencyRate;
+  @Input() toCurrencyRate: MappedCurrencyRate;
+
+  fromCurrency: string;
+  toCurrency: string;
+
+  toRate: number;
+  fromRate: number;
+
+  constructor() { }
+
+  ngOnChanges(changes: SimpleChanges): void {
+    this.fromCurrency = this.fromCurrencyRate && this.fromCurrencyRate.currency;
+    this.fromRate = this.fromCurrencyRate && this.fromCurrencyRate.rate;
+
+    this.toCurrency = this.toCurrencyRate && this.toCurrencyRate.currency;
+    this.toRate = this.toCurrencyRate && this.toCurrencyRate.rate;
+  }
+}

src/app/currency-converter/components/currency-converter/currency-converter.component.html

@@ -0,0 +1,41 @@
+<div class="converter-container" fxLayout="column" fxLayoutGap="25px">
+  <mat-card>
+    <mat-card-content>
+      <form [formGroup]="currencyConverterForm" fxLayout="row" fxLayoutAlign="space-evenly center"
+        (ngSubmit)="convert()" novalidate>
+        <mat-form-field appearance="outline">
+          <input matInput placeholder="Amount" id="amount" [formControlName]="formNames.Amount" type="number">
+        </mat-form-field>
+        <mat-form-field appearance="outline">
+          <input type="text" placeholder="From" name="fromCurrency" aria-label="From" matInput [formControlName]="formNames.FromCurrency"
+            (keydown.enter)="selectCurrencyFromInput($event, formNames.FromCurrency)" [matAutocomplete]="fromAutocomplete">
+          <mat-autocomplete #fromAutocomplete="matAutocomplete">
+            <mat-option *ngFor="let fromItem of filteredFromCurrencies | async" [value]="fromItem">
+              {{fromItem}}
+            </mat-option>
+          </mat-autocomplete>
+        </mat-form-field>
+        <div class="converter-btn">
+          <button type="button" mat-icon-button class="reverse-btn" color="accent" (click)="swapCurrencies()"
+            aria-label="Swap currencies">
+            <mat-icon>compare_arrows</mat-icon>
+          </button>
+        </div>
+        <mat-form-field appearance="outline">
+          <input type="text" class="uppercase" placeholder="To" aria-label="To" matInput [formControlName]="formNames.ToCurrency"
+            (keydown.enter)="selectCurrencyFromInput($event, formNames.ToCurrency)" [matAutocomplete]="toAutocomplete">
+          <mat-autocomplete #toAutocomplete="matAutocomplete">
+            <mat-option *ngFor="let toItem of filteredToCurrencies | async" [value]="toItem">
+              {{toItem}}
+            </mat-option>
+          </mat-autocomplete>
+        </mat-form-field>
+        <div class="converter-btn">
+          <button type="button" mat-raised-button color="accent" (click)="convert()">Convert</button>
+        </div>
+      </form>
+    </mat-card-content>
+  </mat-card>
+  <app-conversion-details *ngIf="result" [amount]="amount" [result]="result" [fromCurrencyRate]="fromCurrencyRate"
+    [toCurrencyRate]="toCurrencyRate"></app-conversion-details>
+</div>

src/app/currency-converter/components/currency-converter/currency-converter.component.scss

@@ -0,0 +1,12 @@
+.converter-container {
+  margin: 5%;
+  padding: 25px;
+
+  .converter-btn {
+    padding-bottom: 1.34375em;
+  }
+
+  .reverse-btn:hover {
+      border: 1px solid;
+  }
+}

src/app/currency-converter/components/currency-converter/currency-converter.component.spec.ts

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

src/app/currency-converter/components/currency-converter/currency-converter.component.ts

@@ -0,0 +1,214 @@
+import { Component, OnInit } from '@angular/core';
+import { FormBuilder, FormGroup, Validators } from '@angular/forms';
+import { Observable } from 'rxjs';
+import { map, startWith } from 'rxjs/operators';
+import { ActivatedRoute } from '@angular/router';
+import { MappedCurrencyRate } from 'src/app/shared/interfaces/currency-rate';
+import { CurrencyExchangeService } from 'src/app/shared/services/currency-exchange.service';
+import { ExchangeRatesApiService } from 'src/app/shared/services/exchange-rates-api.service';
+import { Currency } from 'src/app/shared/enums/currency';
+import { ExchangeRates } from 'src/app/shared/interfaces/exchange-rates';
+import { FormNames } from 'src/app/shared/enums/form-names';
+
+@Component({
+  selector: 'app-currency-converter',
+  templateUrl: './currency-converter.component.html',
+  styleUrls: ['./currency-converter.component.scss']
+})
+export class CurrencyConverterComponent implements OnInit {
+  currencyConverterForm: FormGroup;
+
+  filteredFromCurrencies: Observable<string[]>;
+  filteredToCurrencies: Observable<string[]>;
+
+  fromCurrencyRate: MappedCurrencyRate;
+  toCurrencyRate: MappedCurrencyRate;
+
+  result: string;
+  amount: number;
+
+  isLoading = true;
+  formNames = FormNames;
+
+  constructor(
+    private formBuilder: FormBuilder,
+    private currencyExchangeService: CurrencyExchangeService,
+    private exchangeRatesApiService: ExchangeRatesApiService,
+    private route: ActivatedRoute
+  ) {}
+
+  ngOnInit() {
+    const baseCurrency =
+      this.route.snapshot.paramMap.get('from') || Currency.EUR;
+    const quoteCurrency =
+      this.route.snapshot.paramMap.get('to') || Currency.HRK;
+
+    this.currencyConverterForm = this.initForm(baseCurrency, quoteCurrency);
+
+    this.getExchangeRates(baseCurrency);
+
+    this.filteredFromCurrencies = this.getFromValueChanges(
+      FormNames.FromCurrency
+    );
+    this.filteredToCurrencies = this.getToValueChanges(FormNames.ToCurrency);
+  }
+
+  convert() {
+    this.fromCurrencyRate = this.filterSelectedValue(
+      this.currencyConverterForm.get(FormNames.FromCurrency).value
+    );
+    this.toCurrencyRate = this.filterSelectedValue(
+      this.currencyConverterForm.get(FormNames.ToCurrency).value
+    );
+
+    this.amount = Math.floor(
+      this.currencyConverterForm.get(FormNames.Amount).value
+    );
+
+    this.result = this.calculateExchangeRate(
+      this.fromCurrencyRate && this.fromCurrencyRate.rate,
+      this.toCurrencyRate && this.toCurrencyRate.rate
+    );
+  }
+
+  swapCurrencies() {
+    this.currencyConverterForm = this.formBuilder.group({
+      amount: [
+        this.currencyConverterForm.get(FormNames.Amount).value,
+        Validators.required
+      ],
+      fromCurrency: [
+        this.currencyConverterForm.get(FormNames.ToCurrency).value,
+        Validators.required
+      ],
+      toCurrency: [
+        this.currencyConverterForm.get(FormNames.FromCurrency).value,
+        Validators.required
+      ]
+    });
+
+    const baseCurrencyCode = this.currencyConverterForm.get(
+      FormNames.FromCurrency
+    ).value;
+
+    this.getExchangeRates(baseCurrencyCode);
+
+    this.filteredFromCurrencies = this.getFromValueChanges(
+      FormNames.FromCurrency
+    );
+    this.filteredToCurrencies = this.getToValueChanges(FormNames.ToCurrency);
+
+    this.convert();
+  }
+
+  getFromValueChanges(formControlName: string): Observable<string[]> {
+    return this.currencyConverterForm.get(formControlName).valueChanges.pipe(
+      startWith(''),
+      map(value =>
+        this.filterCurrencies(
+          value,
+          this.currencyExchangeService.fromCurrencies
+        )
+      )
+    );
+  }
+  getToValueChanges(formControlName: string): Observable<string[]> {
+    return this.currencyConverterForm.get(formControlName).valueChanges.pipe(
+      startWith(''),
+      map(value =>
+        this.filterCurrencies(value, this.currencyExchangeService.toCurrencies)
+      )
+    );
+  }
+
+  getExchangeRates(baseCurrencyCode: string) {
+    this.exchangeRatesApiService
+      .getLatestExchangeRates(baseCurrencyCode)
+      .subscribe(
+        (exchangeRate: ExchangeRates): void => {
+          this.currencyExchangeService.exchangeRates = this.mapExchangeRatesResponseData(
+            exchangeRate
+          );
+
+          this.currencyExchangeService.fromCurrencies = this.mapCurrencies();
+          this.currencyExchangeService.toCurrencies = this.mapCurrencies();
+        },
+        (error): void => {
+          console.error(`Error: ${error.message}`);
+        },
+        () => {
+          this.isLoading = false;
+        }
+      );
+  }
+
+  selectCurrencyFromInput(event: any, formName: string): void {
+    const inputCurrency = event.target.value.toUpperCase();
+
+    if (inputCurrency.length >= 2 && inputCurrency.length <= 3) {
+      const mappedCurrencies = this.mapCurrencies();
+
+      const matchedCurrency = mappedCurrencies
+        .find(currency => currency.includes(inputCurrency))
+        .toString();
+
+      this.currencyConverterForm.get(formName).setValue(matchedCurrency);
+    }
+  }
+
+  private mapExchangeRatesResponseData(
+    responseData: ExchangeRates
+  ): MappedCurrencyRate[] {
+    const mappedRates = Object.keys(responseData.rates).map(
+      (item: string): MappedCurrencyRate => {
+        return {
+          currency: item,
+          rate: responseData.rates[item]
+        };
+      }
+    );
+
+    const baseRate = mappedRates.find(
+      cRate => cRate.currency === responseData.base
+    );
+    if (!baseRate) {
+      mappedRates.push({ currency: responseData.base, rate: 1 });
+    }
+    return mappedRates;
+  }
+
+  private initForm(fromCurrency: string, toCurrency: string) {
+    return this.formBuilder.group({
+      amount: [1, Validators.required],
+      fromCurrency: [fromCurrency, Validators.required],
+      toCurrency: [toCurrency, Validators.required]
+    });
+  }
+
+  private mapCurrencies(): string[] {
+    return this.currencyExchangeService.exchangeRates
+      .map((currency: MappedCurrencyRate) => {
+        return currency.currency;
+      })
+      .sort();
+  }
+  private filterCurrencies(value: string, arrayToFilter: string[]): string[] {
+    const filterValueLowercase = value.toLowerCase();
+
+    return arrayToFilter.filter(option =>
+      option.toLowerCase().includes(filterValueLowercase)
+    );
+  }
+
+  private filterSelectedValue(currencyCode: string): MappedCurrencyRate {
+    return this.currencyExchangeService.exchangeRates.find(
+      (item: MappedCurrencyRate) => {
+        return item.currency === currencyCode;
+      }
+    );
+  }
+
+  private calculateExchangeRate(fromRate: number, toRate: number): string {
+    return ((this.amount * toRate) / fromRate).toFixed(5);
+  }
+}

src/app/currency-converter/currency-converter-routing.module.ts

@@ -0,0 +1,20 @@
+import { NgModule } from '@angular/core';
+import { Routes, RouterModule } from '@angular/router';
+import { CurrencyConverterComponent } from './components/currency-converter/currency-converter.component';
+
+const routes: Routes = [
+  {
+    path: 'currency-converter/:from/:to',
+    component: CurrencyConverterComponent
+  },
+  {
+    path: '',
+    component: CurrencyConverterComponent
+  }
+];
+
+@NgModule({
+  imports: [RouterModule.forChild(routes)],
+  exports: [RouterModule]
+})
+export class CurrencyConverterRoutingModule { }

src/app/currency-converter/currency-converter.module.ts

@@ -0,0 +1,44 @@
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { FormsModule } from '@angular/forms';
+import { ReactiveFormsModule } from '@angular/forms';
+import { CurrencyConverterRoutingModule } from './currency-converter-routing.module';
+import { HttpClientModule } from '@angular/common/http';
+import { CurrencyConverterComponent } from './components/currency-converter/currency-converter.component';
+import {
+  MatFormFieldModule,
+  MatInputModule,
+  MatSelectModule,
+  MatButtonModule,
+  MatCardModule,
+  MatAutocompleteModule,
+  MatIconModule,
+  MatTableModule
+} from '@angular/material';
+import { FlexLayoutModule } from '@angular/flex-layout';
+import { ConversionDetailsComponent } from './components/conversion-details/conversion-details.component';
+import { SharedModule } from '../shared/shared.module';
+
+@NgModule({
+  declarations: [CurrencyConverterComponent, ConversionDetailsComponent],
+  imports: [
+    CommonModule,
+    CurrencyConverterRoutingModule,
+    HttpClientModule,
+    ReactiveFormsModule,
+    FormsModule,
+
+    MatFormFieldModule,
+    MatInputModule,
+    MatSelectModule,
+    MatButtonModule,
+    MatCardModule,
+    MatAutocompleteModule,
+    MatIconModule,
+    MatTableModule,
+
+    FlexLayoutModule,
+    SharedModule
+  ]
+})
+export class CurrencyConverterModule {}

src/app/exchange-rates/components/exchange-rates/exchange-rates.component.html

@@ -0,0 +1,37 @@
+<div class="currencies-container">
+  <form>
+    <div fxLayout="row" fxLayoutAlign="space-between center">
+      <mat-form-field>
+        <input type="text" placeholder="Select base currency" aria-label="Base currency" matInput
+          [formControl]="baseCurrencyControl" [matAutocomplete]="auto" (keydown.enter)="selectCurrencyFromInput($event)">
+        <mat-autocomplete #auto="matAutocomplete">
+          <mat-option *ngFor="let baseCurrencyOption of filteredBaseCurrencies | async"
+            (onSelectionChange)="getExchangeRates(baseCurrencyOption)" [value]="baseCurrencyOption">
+            {{baseCurrencyOption}}
+          </mat-option>
+        </mat-autocomplete>
+      </mat-form-field>
+      <mat-form-field>
+        <input matInput (keyup)="applySearchFilter($event.target.value)" placeholder="Search">
+      </mat-form-field>
+    </div>
+  </form>
+  <div class="mat-elevation-z8">
+    <table mat-table [dataSource]="dataSource" matSort>
+
+      <ng-container matColumnDef="currency">
+        <th mat-header-cell *matHeaderCellDef mat-sort-header> Quote Currency </th>
+        <td mat-cell *matCellDef="let element">
+          <a [routerLink]="['/currency-converter',baseCurrencyControl.value, element.currency]">{{element.currency}}</a>
+        </td>
+      </ng-container>
+
+      <ng-container matColumnDef="rate">
+        <th mat-header-cell *matHeaderCellDef mat-sort-header> Rate </th>
+        <td mat-cell *matCellDef="let element"> {{element.rate | number: '1.5-5' }} </td>
+      </ng-container>
+      <tr mat-header-row *matHeaderRowDef="displayedColumns; sticky: true"></tr>
+      <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
+    </table>
+  </div>
+</div>

src/app/exchange-rates/components/exchange-rates/exchange-rates.component.scss

@@ -0,0 +1,7 @@
+.currencies-container {
+  margin: 5%;
+
+  table {
+    width: 100%;
+  }
+}

src/app/exchange-rates/components/exchange-rates/exchange-rates.component.spec.ts

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

src/app/exchange-rates/components/exchange-rates/exchange-rates.component.ts

@@ -0,0 +1,133 @@
+import { Component, OnInit, ViewChild } from '@angular/core';
+import { Observable } from 'rxjs';
+import { startWith, map } from 'rxjs/operators';
+import { FormControl } from '@angular/forms';
+import { Currency } from 'src/app/shared/enums/currency';
+import { MappedCurrencyRate } from 'src/app/shared/interfaces/currency-rate';
+import { CurrencyExchangeService } from 'src/app/shared/services/currency-exchange.service';
+import { ExchangeRatesApiService } from 'src/app/shared/services/exchange-rates-api.service';
+import { ExchangeRates } from 'src/app/shared/interfaces/exchange-rates';
+import {
+  MatTableDataSource,
+  MatSort,
+  MatOptionSelectionChange
+} from '@angular/material';
+
+@Component({
+  selector: 'app-exchange-rates',
+  templateUrl: './exchange-rates.component.html',
+  styleUrls: ['./exchange-rates.component.scss']
+})
+export class ExchangeRatesComponent implements OnInit {
+  dataSource: MatTableDataSource<MappedCurrencyRate>;
+  displayedColumns = ['currency', 'rate'];
+
+  filteredBaseCurrencies: Observable<string[]>;
+
+  baseCurrencyControl = new FormControl(Currency.EUR);
+
+  @ViewChild(MatSort, { static: true }) sort: MatSort;
+
+  constructor(
+    private currencyExchangeService: CurrencyExchangeService,
+    private exchangeRatesApiService: ExchangeRatesApiService
+  ) {}
+
+  ngOnInit() {
+    this.getExchangeRates(Currency.EUR);
+
+    this.filteredBaseCurrencies = this.getBaseCurrencyValueChanges();
+  }
+
+  getExchangeRates(baseCurrencyCode: string) {
+    this.exchangeRatesApiService
+      .getLatestExchangeRates(baseCurrencyCode)
+      .subscribe(
+        (exchangeRates: ExchangeRates): void => {
+          this.currencyExchangeService.exchangeRates = this.mapExchangeRatesResponseData(
+            exchangeRates
+          );
+
+          this.dataSource = new MatTableDataSource(
+            this.currencyExchangeService.exchangeRates
+          );
+          this.dataSource.sort = this.sort;
+
+          this.currencyExchangeService.fromCurrencies = this.mapCurrencies();
+          this.currencyExchangeService.toCurrencies = this.mapCurrencies();
+        },
+        (error): void => {
+          console.error(`Error: ${error.message}`);
+        }
+      );
+  }
+
+  selectCurrencyFromInput(event: any): void {
+    const inputCurrency = event.target.value.toUpperCase();
+
+    if (inputCurrency.length >= 2 && inputCurrency.length <= 3) {
+      const mappedCurrencies = this.mapCurrencies();
+
+      const matchedCurrency = mappedCurrencies
+        .find(currency => currency.includes(inputCurrency))
+        .toString();
+
+      this.baseCurrencyControl.setValue(matchedCurrency);
+      this.getExchangeRates(matchedCurrency);
+    }
+  }
+
+  applySearchFilter(filterValue: string) {
+    this.dataSource.filter = filterValue.trim().toLowerCase();
+  }
+
+  private getBaseCurrencyValueChanges(): Observable<string[]> {
+    return this.baseCurrencyControl.valueChanges.pipe(
+      startWith(''),
+      map(value =>
+        this.filterCurrencies(
+          value,
+          this.currencyExchangeService.fromCurrencies
+        )
+      )
+    );
+  }
+
+  private mapExchangeRatesResponseData(
+    responseData: ExchangeRates
+  ): MappedCurrencyRate[] {
+    const mappedRates = Object.keys(responseData.rates).map(
+      (item: string): MappedCurrencyRate => {
+        return {
+          currency: item,
+          rate: responseData.rates[item]
+        };
+      }
+    );
+
+    const baseRate = mappedRates.find(
+      cRate => cRate.currency === responseData.base
+    );
+    if (!baseRate) {
+      mappedRates.push({ currency: responseData.base, rate: 1 });
+    }
+
+    return mappedRates;
+  }
+
+  private filterCurrencies(value: string, arrayToFilter: string[]): string[] {
+    const filterValueLowercase = value.toLowerCase();
+
+    return arrayToFilter.filter(option =>
+      option.toLowerCase().includes(filterValueLowercase)
+    );
+  }
+
+  private mapCurrencies(): string[] {
+    return this.currencyExchangeService.exchangeRates
+      .map((currency: MappedCurrencyRate) => {
+        return currency.currency;
+      })
+      .sort();
+  }
+}

src/app/exchange-rates/exchange-rates-routing.module.ts

@@ -0,0 +1,16 @@
+import { NgModule } from '@angular/core';
+import { Routes, RouterModule } from '@angular/router';
+import { ExchangeRatesComponent } from './components/exchange-rates/exchange-rates.component';
+
+const routes: Routes = [
+  {
+    path: '',
+    component: ExchangeRatesComponent
+  }
+];
+
+@NgModule({
+  imports: [RouterModule.forChild(routes)],
+  exports: [RouterModule]
+})
+export class ExchangeRatesRoutingModule { }

src/app/exchange-rates/exchange-rates.module.ts

@@ -0,0 +1,46 @@
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { ExchangeRatesComponent } from './components/exchange-rates/exchange-rates.component';
+import { SharedModule } from '../shared/shared.module';
+import { FormsModule } from '@angular/forms';
+import { ReactiveFormsModule } from '@angular/forms';
+import { ExchangeRatesRoutingModule } from './exchange-rates-routing.module';
+import {
+  MatFormFieldModule,
+  MatInputModule,
+  MatSelectModule,
+  MatButtonModule,
+  MatCardModule,
+  MatAutocompleteModule,
+  MatIconModule,
+  MatTableModule,
+  MatSortModule
+} from '@angular/material';
+import { NgxMatSelectSearchModule } from 'ngx-mat-select-search';
+
+import { FlexLayoutModule } from '@angular/flex-layout';
+
+@NgModule({
+  declarations: [ExchangeRatesComponent],
+  imports: [
+    CommonModule,
+    ExchangeRatesRoutingModule,
+    FormsModule,
+    ReactiveFormsModule,
+    SharedModule,
+
+    MatFormFieldModule,
+    MatInputModule,
+    MatSelectModule,
+    MatButtonModule,
+    MatCardModule,
+    MatAutocompleteModule,
+    MatIconModule,
+    MatTableModule,
+    MatSortModule,
+    NgxMatSelectSearchModule,
+
+    FlexLayoutModule
+  ]
+})
+export class ExchangeRatesModule {}

src/app/shared/enums/currency.ts

@@ -0,0 +1,4 @@
+export enum Currency {
+    EUR = 'EUR',
+    HRK = 'HRK'
+}

src/app/shared/enums/form-names.ts

@@ -0,0 +1,5 @@
+export enum FormNames {
+  Amount = 'amount',
+  FromCurrency = 'fromCurrency',
+  ToCurrency = 'toCurrency',
+}

src/app/shared/interfaces/currency-rate.ts

@@ -0,0 +1,4 @@
+export interface MappedCurrencyRate {
+    currency: string;
+    rate: number;
+}

src/app/shared/interfaces/exchange-rates.ts

@@ -0,0 +1,6 @@
+import { StringNumberPair } from 'src/app/shared/interfaces/string-number-pair';
+
+export interface ExchangeRates {
+    base: string;
+    rates: StringNumberPair;
+}

src/app/shared/interfaces/string-number-pair.ts

@@ -0,0 +1,3 @@
+export interface StringNumberPair {
+    [key: string]: number;
+}

src/app/shared/services/currency-exchange.service.spec.ts

@@ -0,0 +1,12 @@
+import { TestBed } from '@angular/core/testing';
+
+import { CurrencyExchangeService } from './currency-exchange.service';
+
+describe('CurrencyExchangeService', () => {
+  beforeEach(() => TestBed.configureTestingModule({}));
+
+  it('should be created', () => {
+    const service: CurrencyExchangeService = TestBed.get(CurrencyExchangeService);
+    expect(service).toBeTruthy();
+  });
+});

src/app/shared/services/currency-exchange.service.ts

@@ -0,0 +1,14 @@
+import { Injectable } from '@angular/core';
+import { MappedCurrencyRate } from '../interfaces/currency-rate';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class CurrencyExchangeService {
+  public exchangeRates: MappedCurrencyRate[];
+
+  public fromCurrencies: string[] = [];
+  public toCurrencies: string[] = [];
+
+  constructor() { }
+}

src/app/shared/services/exchange-rates-api.service.spec.ts

@@ -0,0 +1,12 @@
+import { TestBed } from '@angular/core/testing';
+
+import { ExchangeRatesApiService } from './exchange-rates-api.service';
+
+describe('ExchangeRatesApiService', () => {
+  beforeEach(() => TestBed.configureTestingModule({}));
+
+  it('should be created', () => {
+    const service: ExchangeRatesApiService = TestBed.get(ExchangeRatesApiService);
+    expect(service).toBeTruthy();
+  });
+});

src/app/shared/services/exchange-rates-api.service.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import { Observable } from 'rxjs';
+import { ExchangeRates } from '../interfaces/exchange-rates';
+import { HttpClient } from '@angular/common/http';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ExchangeRatesApiService {
+  private readonly apiEndpoint = 'https://api.ratesapi.io/api';
+
+  constructor(private readonly http: HttpClient) { }
+
+  getLatestExchangeRates(baseCurrency: string, quoteCurrency = ''): Observable<ExchangeRates> {
+    return this.http.get<ExchangeRates>(
+      `${this.apiEndpoint}/latest?base=${baseCurrency}&symbols=${quoteCurrency}`
+    );
+  }
+}

src/app/shared/services/storage.service.spec.ts

@@ -0,0 +1,12 @@
+import { TestBed } from '@angular/core/testing';
+
+import { StorageService } from './storage.service';
+
+describe('StorageService', () => {
+  beforeEach(() => TestBed.configureTestingModule({}));
+
+  it('should be created', () => {
+    const service: StorageService = TestBed.get(StorageService);
+    expect(service).toBeTruthy();
+  });
+});

src/app/shared/services/storage.service.ts

@@ -0,0 +1,40 @@
+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class StorageService {
+  static setObject(key: string, data: object) {
+    try {
+      const serializedData = JSON.stringify(data);
+      localStorage.setItem(key, serializedData);
+    } catch (e) {
+      throw new Error('Provided data is not serializable!');
+    }
+  }
+
+  static getObject(key: string): object {
+    const item = localStorage.getItem(key);
+    return item && JSON.parse(item);
+  }
+
+  static setItem(key: string, data: string): string {
+    localStorage.setItem(key, data);
+    return data;
+  }
+
+  static getItem(key: string): string {
+    const data = localStorage.getItem(key);
+    return data;
+  }
+
+  static removeItem(key: string) {
+    localStorage.removeItem(key);
+  }
+
+  constructor() {
+    if (typeof Storage === 'undefined') {
+      throw new Error('StorageService: Local storage is not supported');
+    }
+  }
+}

src/app/shared/shared.module.ts

@@ -0,0 +1,13 @@
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { StorageService } from './services/storage.service';
+import { ExchangeRatesApiService } from './services/exchange-rates-api.service';
+import { CurrencyExchangeService } from './services/currency-exchange.service';
+
+@NgModule({
+  imports: [
+    CommonModule
+  ],
+  providers: [StorageService, ExchangeRatesApiService, CurrencyExchangeService]
+})
+export class SharedModule { }

src/environments/environment.prod.ts

@@ -0,0 +1,3 @@
+export const environment = {
+  production: true
+};

src/environments/environment.ts

@@ -0,0 +1,16 @@
+// This file can be replaced during build by using the `fileReplacements` array.
+// `ng build --prod` 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/dist/zone-error';  // Included with Angular CLI.

src/index.html

@@ -0,0 +1,31 @@
+<!doctype html>
+<html lang="en">
+
+<head>
+  <meta charset="utf-8">
+  <title>Currency Converter</title>
+  <base href="/">
+
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="icon" type="image/x-icon" href="favicon.ico">
+  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+
+  <style>
+    div.welcome-msg {
+      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+      text-transform: uppercase;
+      color: #673ab7;
+      font-size: 2.5em;
+      text-align: center;
+      text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
+    }
+  </style>
+</head>
+
+<body>
+  <app-root>
+    <div class="welcome-msg">Hey stranger! <br /> Welcome to my awesome Currency Converter Web App.</div>
+  </app-root>
+</body>
+
+</html>

src/main.ts

@@ -0,0 +1,13 @@
+import { enableProdMode } from '@angular/core';
+import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
+
+import { AppModule } from './app/app.module';
+import { environment } from './environments/environment';
+import 'hammerjs';
+
+if (environment.production) {
+  enableProdMode();
+}
+
+platformBrowserDynamic().bootstrapModule(AppModule)
+  .catch(err => console.error(err));

src/polyfills.ts

@@ -0,0 +1,63 @@
+/**
+ * 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
+ */
+
+/** IE10 and 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.ts';
+ *
+ * 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/dist/zone';  // Included with Angular CLI.
+
+
+/***************************************************************************************************
+ * APPLICATION IMPORTS
+ */

src/styles.scss

@@ -0,0 +1,20 @@
+@import '@angular/material/prebuilt-themes/deeppurple-amber.css';
+
+body {
+  margin: 0;
+  padding: 0;
+}
+
+.m-5 {
+  margin: 5%;
+}
+.my-5 {
+  margin: 5%;
+}
+
+.p-25 {
+    padding: 25px;
+}
+.py-25 {
+  padding: 25px;
+}

src/test.ts

@@ -0,0 +1,20 @@
+// This file is required by karma.conf.js and loads recursively all the .spec and framework files
+
+import 'zone.js/dist/zone-testing';
+import { getTestBed } from '@angular/core/testing';
+import {
+  BrowserDynamicTestingModule,
+  platformBrowserDynamicTesting
+} from '@angular/platform-browser-dynamic/testing';
+
+declare const require: any;
+
+// 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

@@ -0,0 +1,14 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/app",
+    "types": []
+  },
+  "include": [
+    "src/**/*.ts"
+  ],
+  "exclude": [
+    "src/test.ts",
+    "src/**/*.spec.ts"
+  ]
+}

tsconfig.json

@@ -0,0 +1,22 @@
+{
+  "compileOnSave": false,
+  "compilerOptions": {
+    "baseUrl": "./",
+    "outDir": "./dist/out-tsc",
+    "sourceMap": true,
+    "declaration": false,
+    "downlevelIteration": true,
+    "experimentalDecorators": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "importHelpers": true,
+    "target": "es2015",
+    "typeRoots": [
+      "node_modules/@types"
+    ],
+    "lib": [
+      "es2018",
+      "dom"
+    ]
+  }
+}

tsconfig.spec.json

@@ -0,0 +1,18 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/spec",
+    "types": [
+      "jasmine",
+      "node"
+    ]
+  },
+  "files": [
+    "src/test.ts",
+    "src/polyfills.ts"
+  ],
+  "include": [
+    "src/**/*.spec.ts",
+    "src/**/*.d.ts"
+  ]
+}

tslint.json

@@ -0,0 +1,92 @@
+{
+  "extends": "tslint:recommended",
+  "rules": {
+    "array-type": false,
+    "arrow-parens": false,
+    "deprecation": {
+      "severity": "warning"
+    },
+    "component-class-suffix": true,
+    "contextual-lifecycle": true,
+    "directive-class-suffix": true,
+    "directive-selector": [
+      true,
+      "attribute",
+      "app",
+      "camelCase"
+    ],
+    "component-selector": [
+      true,
+      "element",
+      "app",
+      "kebab-case"
+    ],
+    "import-blacklist": [
+      true,
+      "rxjs/Rx"
+    ],
+    "interface-name": false,
+    "max-classes-per-file": false,
+    "max-line-length": [
+      true,
+      140
+    ],
+    "member-access": false,
+    "member-ordering": [
+      true,
+      {
+        "order": [
+          "static-field",
+          "instance-field",
+          "static-method",
+          "instance-method"
+        ]
+      }
+    ],
+    "no-consecutive-blank-lines": false,
+    "no-console": [
+      true,
+      "debug",
+      "info",
+      "time",
+      "timeEnd",
+      "trace"
+    ],
+    "no-empty": false,
+    "no-inferrable-types": [
+      true,
+      "ignore-params"
+    ],
+    "no-non-null-assertion": true,
+    "no-redundant-jsdoc": true,
+    "no-switch-case-fall-through": true,
+    "no-use-before-declare": true,
+    "no-var-requires": false,
+    "object-literal-key-quotes": [
+      true,
+      "as-needed"
+    ],
+    "object-literal-sort-keys": false,
+    "ordered-imports": false,
+    "quotemark": [
+      true,
+      "single"
+    ],
+    "trailing-comma": false,
+    "no-conflicting-lifecycle": true,
+    "no-host-metadata-property": true,
+    "no-input-rename": true,
+    "no-inputs-metadata-property": true,
+    "no-output-native": true,
+    "no-output-on-prefix": true,
+    "no-output-rename": true,
+    "no-outputs-metadata-property": true,
+    "template-banana-in-box": true,
+    "template-no-negated-async": true,
+    "use-lifecycle-interface": true,
+    "use-pipe-transform-interface": true
+  },
+  "rulesDirectory": [
+    "codelyzer"
+  ]
+}