diff --git a/src/app/app-routing.module.ts b/src/app/app-routing.module.ts
deleted file mode 100644
index d425c6f..0000000
--- a/src/app/app-routing.module.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import { NgModule } from '@angular/core';
-import { Routes, RouterModule } from '@angular/router';
-
-const routes: Routes = [];
-
-@NgModule({
-  imports: [RouterModule.forRoot(routes)],
-  exports: [RouterModule]
-})
-export class AppRoutingModule { }
diff --git a/src/app/app.component.html b/src/app/app.component.html
index e48d8c1..d713365 100644
--- a/src/app/app.component.html
+++ b/src/app/app.component.html
@@ -1,534 +1,21 @@
-<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
-<!-- * * * * * * * * * * * The content below * * * * * * * * * * * -->
-<!-- * * * * * * * * * * is only a placeholder * * * * * * * * * * -->
-<!-- * * * * * * * * * * and can be replaced. * * * * * * * * * * * -->
-<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
-<!-- * * * * * * * * * Delete the template below * * * * * * * * * * -->
-<!-- * * * * * * * to get started with your project! * * * * * * * * -->
-<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
+<nav class="navbar navbar-default">
+  <ul class="nav navbar-nav">
+    <li><a [routerLink]="['/home']">Home</a></li>
+    <li><a [routerLink]="['/password-flow-login']">Password Flow Login</a></li>
+    <li>
+      <a [routerLink]="['/flight-booking/flight-search']">Book a Flight</a>
+    </li>
+  </ul>
+</nav>
 
-<style>
-  :host {
-    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
-    font-size: 14px;
-    color: #333;
-    box-sizing: border-box;
-    -webkit-font-smoothing: antialiased;
-    -moz-osx-font-smoothing: grayscale;
-  }
+<div class="container">
+  <div class="row">
+    <router-outlet></router-outlet>
+  </div>
 
-  h1,
-  h2,
-  h3,
-  h4,
-  h5,
-  h6 {
-    margin: 8px 0;
-  }
-
-  p {
-    margin: 0;
-  }
-
-  .spacer {
-    flex: 1;
-  }
-
-  .toolbar {
-    position: absolute;
-    top: 0;
-    left: 0;
-    right: 0;
-    height: 60px;
-    display: flex;
-    align-items: center;
-    background-color: #1976d2;
-    color: white;
-    font-weight: 600;
-  }
-
-  .toolbar img {
-    margin: 0 16px;
-  }
-
-  .toolbar #twitter-logo {
-    height: 40px;
-    margin: 0 16px;
-  }
-
-  .toolbar #twitter-logo:hover {
-    opacity: 0.8;
-  }
-
-  .content {
-    display: flex;
-    margin: 82px auto 32px;
-    padding: 0 16px;
-    max-width: 960px;
-    flex-direction: column;
-    align-items: center;
-  }
-
-  svg.material-icons {
-    height: 24px;
-    width: auto;
-  }
-
-  svg.material-icons:not(:last-child) {
-    margin-right: 8px;
-  }
-
-  .card svg.material-icons path {
-    fill: #888;
-  }
-
-  .card-container {
-    display: flex;
-    flex-wrap: wrap;
-    justify-content: center;
-    margin-top: 16px;
-  }
-
-  .card {
-    border-radius: 4px;
-    border: 1px solid #eee;
-    background-color: #fafafa;
-    height: 40px;
-    width: 200px;
-    margin: 0 8px 16px;
-    padding: 16px;
-    display: flex;
-    flex-direction: row;
-    justify-content: center;
-    align-items: center;
-    transition: all 0.2s ease-in-out;
-    line-height: 24px;
-  }
-
-  .card-container .card:not(:last-child) {
-    margin-right: 0;
-  }
-
-  .card.card-small {
-    height: 16px;
-    width: 168px;
-  }
-
-  .card-container .card:not(.highlight-card) {
-    cursor: pointer;
-  }
-
-  .card-container .card:not(.highlight-card):hover {
-    transform: translateY(-3px);
-    box-shadow: 0 4px 17px rgba(0, 0, 0, 0.35);
-  }
-
-  .card-container .card:not(.highlight-card):hover .material-icons path {
-    fill: rgb(105, 103, 103);
-  }
-
-  .card.highlight-card {
-    background-color: #1976d2;
-    color: white;
-    font-weight: 600;
-    border: none;
-    width: auto;
-    min-width: 30%;
-    position: relative;
-  }
-
-  .card.card.highlight-card span {
-    margin-left: 60px;
-  }
-
-  svg#rocket {
-    width: 80px;
-    position: absolute;
-    left: -10px;
-    top: -24px;
-  }
-
-  svg#rocket-smoke {
-    height: calc(100vh - 95px);
-    position: absolute;
-    top: 10px;
-    right: 180px;
-    z-index: -10;
-  }
-
-  a,
-  a:visited,
-  a:hover {
-    color: #1976d2;
-    text-decoration: none;
-  }
-
-  a:hover {
-    color: #125699;
-  }
-
-  .terminal {
-    position: relative;
-    width: 80%;
-    max-width: 600px;
-    border-radius: 6px;
-    padding-top: 45px;
-    margin-top: 8px;
-    overflow: hidden;
-    background-color: rgb(15, 15, 16);
-  }
-
-  .terminal::before {
-    content: "\2022 \2022 \2022";
-    position: absolute;
-    top: 0;
-    left: 0;
-    height: 4px;
-    background: rgb(58, 58, 58);
-    color: #c2c3c4;
-    width: 100%;
-    font-size: 2rem;
-    line-height: 0;
-    padding: 14px 0;
-    text-indent: 4px;
-  }
-
-  .terminal pre {
-    font-family: SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;
-    color: white;
-    padding: 0 1rem 1rem;
-    margin: 0;
-  }
-
-  .circle-link {
-    height: 40px;
-    width: 40px;
-    border-radius: 40px;
-    margin: 8px;
-    background-color: white;
-    border: 1px solid #eeeeee;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    cursor: pointer;
-    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
-    transition: 1s ease-out;
-  }
-
-  .circle-link:hover {
-    transform: translateY(-0.25rem);
-    box-shadow: 0px 3px 15px rgba(0, 0, 0, 0.2);
-  }
-
-  footer {
-    margin-top: 8px;
-    display: flex;
-    align-items: center;
-    line-height: 20px;
-  }
-
-  footer a {
-    display: flex;
-    align-items: center;
-  }
-
-  .github-star-badge {
-    color: #24292e;
-    display: flex;
-    align-items: center;
-    font-size: 12px;
-    padding: 3px 10px;
-    border: 1px solid rgba(27,31,35,.2);
-    border-radius: 3px;
-    background-image: linear-gradient(-180deg,#fafbfc,#eff3f6 90%);
-    margin-left: 4px;
-    font-weight: 600;
-    font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol;
-  }
-
-  .github-star-badge:hover {
-    background-image: linear-gradient(-180deg,#f0f3f6,#e6ebf1 90%);
-    border-color: rgba(27,31,35,.35);
-    background-position: -.5em;
-  }
-
-  .github-star-badge .material-icons {
-    height: 16px;
-    width: 16px;
-    margin-right: 4px;
-  }
-
-  svg#clouds {
-    position: fixed;
-    bottom: -160px;
-    left: -230px;
-    z-index: -10;
-    width: 1920px;
-  }
-
-
-  /* Responsive Styles */
-  @media screen and (max-width: 767px) {
-
-    .card-container > *:not(.circle-link) ,
-    .terminal {
-      width: 100%;
-    }
-
-    .card:not(.highlight-card) {
-      height: 16px;
-      margin: 8px 0;
-    }
-
-    .card.highlight-card span {
-      margin-left: 72px;
-    }
-
-    svg#rocket-smoke {
-      right: 120px;
-      transform: rotate(-5deg);
-    }
-  }
-
-  @media screen and (max-width: 575px) {
-    svg#rocket-smoke {
-      display: none;
-      visibility: hidden;
-    }
-  }
-</style>
-
-<!-- Toolbar -->
-<div class="toolbar" role="banner">
-  <img
-    width="40"
-    alt="Angular Logo"
-    src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNTAgMjUwIj4KICAgIDxwYXRoIGZpbGw9IiNERDAwMzEiIGQ9Ik0xMjUgMzBMMzEuOSA2My4ybDE0LjIgMTIzLjFMMTI1IDIzMGw3OC45LTQzLjcgMTQuMi0xMjMuMXoiIC8+CiAgICA8cGF0aCBmaWxsPSIjQzMwMDJGIiBkPSJNMTI1IDMwdjIyLjItLjFWMjMwbDc4LjktNDMuNyAxNC4yLTEyMy4xTDEyNSAzMHoiIC8+CiAgICA8cGF0aCAgZmlsbD0iI0ZGRkZGRiIgZD0iTTEyNSA1Mi4xTDY2LjggMTgyLjZoMjEuN2wxMS43LTI5LjJoNDkuNGwxMS43IDI5LjJIMTgzTDEyNSA1Mi4xem0xNyA4My4zaC0zNGwxNy00MC45IDE3IDQwLjl6IiAvPgogIDwvc3ZnPg=="
-  />
-  <span>Welcome</span>
-    <div class="spacer"></div>
-    <a aria-label="Angular on twitter" target="_blank" rel="noopener" href="https://twitter.com/angular" title="Twitter">
-      <svg id="twitter-logo" height="24" data-name="Logo" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 400">
-        <rect width="400" height="400" fill="none"/>
-        <path d="M153.62,301.59c94.34,0,145.94-78.16,145.94-145.94,0-2.22,0-4.43-.15-6.63A104.36,104.36,0,0,0,325,122.47a102.38,102.38,0,0,1-29.46,8.07,51.47,51.47,0,0,0,22.55-28.37,102.79,102.79,0,0,1-32.57,12.45,51.34,51.34,0,0,0-87.41,46.78A145.62,145.62,0,0,1,92.4,107.81a51.33,51.33,0,0,0,15.88,68.47A50.91,50.91,0,0,1,85,169.86c0,.21,0,.43,0,.65a51.31,51.31,0,0,0,41.15,50.28,51.21,51.21,0,0,1-23.16.88,51.35,51.35,0,0,0,47.92,35.62,102.92,102.92,0,0,1-63.7,22A104.41,104.41,0,0,1,75,278.55a145.21,145.21,0,0,0,78.62,23" fill="#fff"/>
-      </svg>
-    </a>
+  <div class="row">
+    <router-outlet name="aux"></router-outlet>
+  </div>
 </div>
 
-<div class="content" role="main">
-
-  <!-- Highlight Card -->
-  <div class="card highlight-card card-small">
-
-    <svg id="rocket" alt="Rocket Ship" xmlns="http://www.w3.org/2000/svg" width="101.678" height="101.678" viewBox="0 0 101.678 101.678">
-      <g id="Group_83" data-name="Group 83" transform="translate(-141 -696)">
-        <circle id="Ellipse_8" data-name="Ellipse 8" cx="50.839" cy="50.839" r="50.839" transform="translate(141 696)" fill="#dd0031"/>
-        <g id="Group_47" data-name="Group 47" transform="translate(165.185 720.185)">
-          <path id="Path_33" data-name="Path 33" d="M3.4,42.615a3.084,3.084,0,0,0,3.553,3.553,21.419,21.419,0,0,0,12.215-6.107L9.511,30.4A21.419,21.419,0,0,0,3.4,42.615Z" transform="translate(0.371 3.363)" fill="#fff"/>
-          <path id="Path_34" data-name="Path 34" d="M53.3,3.221A3.09,3.09,0,0,0,50.081,0,48.227,48.227,0,0,0,18.322,13.437c-6-1.666-14.991-1.221-18.322,7.218A33.892,33.892,0,0,1,9.439,25.1l-.333.666a3.013,3.013,0,0,0,.555,3.553L23.985,43.641a2.9,2.9,0,0,0,3.553.555l.666-.333A33.892,33.892,0,0,1,32.647,53.3c8.55-3.664,8.884-12.326,7.218-18.322A48.227,48.227,0,0,0,53.3,3.221ZM34.424,9.772a6.439,6.439,0,1,1,9.106,9.106,6.368,6.368,0,0,1-9.106,0A6.467,6.467,0,0,1,34.424,9.772Z" transform="translate(0 0.005)" fill="#fff"/>
-        </g>
-      </g>
-    </svg>
-
-    <span>{{ title }} app is running!</span>
-
-    <svg id="rocket-smoke" alt="Rocket Ship Smoke" xmlns="http://www.w3.org/2000/svg" width="516.119" height="1083.632" viewBox="0 0 516.119 1083.632">
-      <path id="Path_40" data-name="Path 40" d="M644.6,141S143.02,215.537,147.049,870.207s342.774,201.755,342.774,201.755S404.659,847.213,388.815,762.2c-27.116-145.51-11.551-384.124,271.9-609.1C671.15,139.365,644.6,141,644.6,141Z" transform="translate(-147.025 -140.939)" fill="#f5f5f5"/>
-    </svg>
-
-  </div>
-
-  <!-- Resources -->
-  <h2>Resources</h2>
-  <p>Here are some links to help you get started:</p>
-
-  <div class="card-container">
-    <a class="card" target="_blank" rel="noopener" href="https://angular.io/tutorial">
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M5 13.18v4L12 21l7-3.82v-4L12 17l-7-3.82zM12 3L1 9l11 6 9-4.91V17h2V9L12 3z"/></svg>
-
-      <span>Learn Angular</span>
-
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg>    </a>
-
-    <a class="card" target="_blank" rel="noopener" href="https://angular.io/cli">
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M9.4 16.6L4.8 12l4.6-4.6L8 6l-6 6 6 6 1.4-1.4zm5.2 0l4.6-4.6-4.6-4.6L16 6l6 6-6 6-1.4-1.4z"/></svg>
-
-      <span>CLI Documentation</span>
-
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg>
-    </a>
-
-    <a class="card" target="_blank" rel="noopener" href="https://blog.angular.io/">
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M13.5.67s.74 2.65.74 4.8c0 2.06-1.35 3.73-3.41 3.73-2.07 0-3.63-1.67-3.63-3.73l.03-.36C5.21 7.51 4 10.62 4 14c0 4.42 3.58 8 8 8s8-3.58 8-8C20 8.61 17.41 3.8 13.5.67zM11.71 19c-1.78 0-3.22-1.4-3.22-3.14 0-1.62 1.05-2.76 2.81-3.12 1.77-.36 3.6-1.21 4.62-2.58.39 1.29.59 2.65.59 4.04 0 2.65-2.15 4.8-4.8 4.8z"/></svg>
-
-      <span>Angular Blog</span>
-
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg>
-    </a>
-
-  </div>
-
-  <!-- Next Steps -->
-  <h2>Next Steps</h2>
-  <p>What do you want to do next with your app?</p>
-
-  <input type="hidden" #selection>
-
-  <div class="card-container">
-    <div class="card card-small" (click)="selection.value = 'component'" tabindex="0">
-        <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
-
-      <span>New Component</span>
-    </div>
-
-    <div class="card card-small" (click)="selection.value = 'material'" tabindex="0">
-        <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
-
-      <span>Angular Material</span>
-    </div>
-
-    <div class="card card-small" (click)="selection.value = 'pwa'" tabindex="0">
-        <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
-
-      <span>Add PWA Support</span>
-    </div>
-
-    <div class="card card-small" (click)="selection.value = 'dependency'" tabindex="0">
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
-
-      <span>Add Dependency</span>
-    </div>
-
-    <div class="card card-small" (click)="selection.value = 'test'" tabindex="0">
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
-
-      <span>Run and Watch Tests</span>
-    </div>
-
-    <div class="card card-small" (click)="selection.value = 'build'" tabindex="0">
-      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
-
-      <span>Build for Production</span>
-    </div>
-  </div>
-
-  <!-- Terminal -->
-  <div class="terminal" [ngSwitch]="selection.value">
-      <pre *ngSwitchDefault>ng generate component xyz</pre>
-      <pre *ngSwitchCase="'material'">ng add @angular/material</pre>
-      <pre *ngSwitchCase="'pwa'">ng add @angular/pwa</pre>
-      <pre *ngSwitchCase="'dependency'">ng add _____</pre>
-      <pre *ngSwitchCase="'test'">ng test</pre>
-      <pre *ngSwitchCase="'build'">ng build --prod</pre>
-  </div>
-
-  <!-- Links -->
-  <div class="card-container">
-    <a class="circle-link" title="Animations" href="https://angular.io/guide/animations" target="_blank" rel="noopener">
-      <svg id="Group_20" data-name="Group 20" xmlns="http://www.w3.org/2000/svg" width="21.813" height="23.453" viewBox="0 0 21.813 23.453">
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-        <path id="Path_16" data-name="Path 16" d="M4181.516,972.736v23.453l9.245-5.153,1.686-14.4Z" transform="translate(-4170.633 -972.736)" fill="#fb8c00"/>
-        <path id="Path_17" data-name="Path 17" d="M4137.529,1076.127l-7.7-3.723,4.417-2.721,7.753,3.723Z" transform="translate(-4125.003 -1058.315)" fill="#ffe0b2"/>
-        <path id="Path_18" data-name="Path 18" d="M4137.529,1051.705l-7.7-3.723,4.417-2.721,7.753,3.723Z" transform="translate(-4125.003 -1036.757)" fill="#fff3e0"/>
-        <path id="Path_19" data-name="Path 19" d="M4137.529,1027.283l-7.7-3.723,4.417-2.721,7.753,3.723Z" transform="translate(-4125.003 -1015.199)" fill="#fff"/>
-      </svg>
-    </a>
-
-    <a class="circle-link" title="CLI" href="https://cli.angular.io/" target="_blank" rel="noopener">
-      <svg alt="Angular CLI Logo" xmlns="http://www.w3.org/2000/svg" width="21.762" height="23.447" viewBox="0 0 21.762 23.447">
-        <g id="Group_21" data-name="Group 21" transform="translate(0)">
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-      </svg>
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-      <svg alt="Gitter Logo" xmlns="http://www.w3.org/2000/svg" width="19.447" height="19.447" viewBox="0 0 19.447 19.447">
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-    </a>
-  </div>
-
-  <!-- Footer -->
-  <footer>
-      Love Angular?&nbsp;
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-        <div class="github-star-badge">
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-          Star
-        </div>
-      </a>
-      <a href="https://github.com/angular/angular" target="_blank" rel="noopener">
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-      </a>
-  </footer>
-
-  <svg id="clouds" alt="Gray Clouds Background" xmlns="http://www.w3.org/2000/svg" width="2611.084" height="485.677" viewBox="0 0 2611.084 485.677">
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-
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+<!-- Fußzeile -->
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 0ff2ae8..48b5c67 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -1,10 +1,38 @@
+import { authConfig } from './auth.config';
 import { Component } from '@angular/core';
+import { OAuthService, NullValidationHandler } from 'angular-oauth2-oidc';
+import { Router } from '@angular/router';
+import { filter } from 'rxjs/operators';
+import { authCodeFlowConfig } from './auth-code-flow.config';
+import { useHash } from '../flags';
 
 @Component({
+  // tslint:disable-next-line:component-selector
   selector: 'app-root',
   templateUrl: './app.component.html',
-  styleUrls: ['./app.component.scss']
 })
 export class AppComponent {
-  title = 'okupamicoche-angular';
+  constructor(private router: Router, private oauthService: OAuthService) {
+    this.configureCodeFlow();
+
+    // Automatically load user profile
+    this.oauthService.events
+      .pipe(filter((e) => e.type === 'token_received'))
+      .subscribe((_) => {
+        console.debug('state', this.oauthService.state);
+        this.oauthService.loadUserProfile();
+      });
+  }
+
+  private configureCodeFlow() {
+    this.oauthService.configure(authCodeFlowConfig);
+    this.oauthService.loadDiscoveryDocumentAndTryLogin().then((_) => {
+      if (useHash) {
+        this.router.navigate(['/']);
+      }
+    });
+
+    // Optional
+    this.oauthService.setupAutomaticSilentRefresh();
+  }
 }
diff --git a/src/app/app.module.ts b/src/app/app.module.ts
index 2c3ba29..9e4b6cd 100644
--- a/src/app/app.module.ts
+++ b/src/app/app.module.ts
@@ -1,18 +1,51 @@
-import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
+import { FormsModule, ReactiveFormsModule } from '@angular/forms';
+import { BrowserModule } from '@angular/platform-browser';
+import { OAuthModule, OAuthStorage } from 'angular-oauth2-oidc';
+import { HttpClientModule } from '@angular/common/http';
 
-import { AppRoutingModule } from './app-routing.module';
 import { AppComponent } from './app.component';
+import { APP_ROUTES } from './app.routes';
+import { BASE_URL } from './app.tokens';
+import { FlightHistoryComponent } from './flight-history/flight-history.component';
+import { HomeComponent } from './home/home.component';
+import { SharedModule } from './shared/shared.module';
+import { RouterModule, ExtraOptions } from '@angular/router';
+import { useHash } from '../flags';
+
+const ROUTING_OPTIONS: ExtraOptions = {
+  // preloadingStrategy: CustomPreloadingStrategy,
+  useHash,
+  initialNavigation: 'enabled'
+};
 
 @NgModule({
-  declarations: [
-    AppComponent
-  ],
   imports: [
     BrowserModule,
-    AppRoutingModule
+    RouterModule.forRoot(APP_ROUTES, ROUTING_OPTIONS),
+    FormsModule,
+    ReactiveFormsModule,
+    HttpClientModule,
+    SharedModule.forRoot(),
+    OAuthModule.forRoot({
+      resourceServer: {
+        allowedUrls: ['http://www.angular.at/api'],
+        sendAccessToken: true
+      }
+    })
+  ],
+  declarations: [
+    AppComponent,
+    HomeComponent,
+    FlightHistoryComponent
+  ],
+  providers: [
+    // (useHash) ? { provide: LocationStrategy, useClass: HashLocationStrategy } : [],
+    // {provide: AuthConfig, useValue: authConfig },
+    // { provide: OAuthStorage, useValue: localStorage },
+    // { provide: ValidationHandler, useClass: JwksValidationHandler },
+    { provide: BASE_URL, useValue: 'http://www.angular.at' }
   ],
-  providers: [],
   bootstrap: [AppComponent]
 })
-export class AppModule { }
+export class AppModule {}
diff --git a/src/app/app.routes.ts b/src/app/app.routes.ts
new file mode 100644
index 0000000..18b3e07
--- /dev/null
+++ b/src/app/app.routes.ts
@@ -0,0 +1,31 @@
+import { Routes } from '@angular/router';
+import { HomeComponent } from './home/home.component';
+import { FlightHistoryComponent } from './flight-history/flight-history.component';
+
+export let APP_ROUTES: Routes = [
+  {
+    path: '',
+    redirectTo: 'home',
+    pathMatch: 'full'
+  },
+  {
+    path: 'home',
+    component: HomeComponent
+  },
+  {
+    path: 'flight-booking',
+    loadChildren: () =>
+      import('./flight-booking/flight-booking.module').then(
+        mod => mod.FlightBookingModule
+      )
+  },
+  {
+    path: 'history',
+    component: FlightHistoryComponent,
+    outlet: 'aux'
+  },
+  {
+    path: '**',
+    redirectTo: 'home'
+  }
+];
diff --git a/src/app/app.tokens.ts b/src/app/app.tokens.ts
new file mode 100644
index 0000000..d704d0d
--- /dev/null
+++ b/src/app/app.tokens.ts
@@ -0,0 +1,3 @@
+import { InjectionToken } from '@angular/core';
+
+export const BASE_URL = new InjectionToken<string>('BASE_URL');
diff --git a/src/app/auth-code-flow.config.ts b/src/app/auth-code-flow.config.ts
new file mode 100644
index 0000000..749f9f6
--- /dev/null
+++ b/src/app/auth-code-flow.config.ts
@@ -0,0 +1,53 @@
+import { AuthConfig } from 'angular-oauth2-oidc';
+import { useSilentRefreshForCodeFlow } from '../flags';
+
+export const authCodeFlowConfig: AuthConfig = {
+  issuer: 'https://idsvr4.azurewebsites.net',
+
+  // URL of the SPA to redirect the user to after login
+  redirectUri:
+    window.location.origin +
+    (localStorage.getItem('useHashLocationStrategy') === 'true'
+      ? '/#/index.html'
+      : '/index.html'),
+
+  // The SPA's id. The SPA is registerd with this id at the auth-server
+  // clientId: 'server.code',
+  clientId: 'spa',
+
+  // Just needed if your auth server demands a secret. In general, this
+  // is a sign that the auth server is not configured with SPAs in mind
+  // and it might not enforce further best practices vital for security
+  // such applications.
+  // dummyClientSecret: 'secret',
+
+  responseType: 'code',
+
+  // set the scope for the permissions the client should request
+  // The first four are defined by OIDC.
+  // Important: Request offline_access to get a refresh token
+  // The api scope is a usecase specific one
+  scope: useSilentRefreshForCodeFlow
+    ? 'openid profile email api'
+    : 'openid profile email offline_access api',
+
+  // ^^ Please note that offline_access is not needed for silent refresh
+  // At least when using idsvr, this even prevents silent refresh
+  // as idsvr ALWAYS prompts the user for consent when this scope is
+  // requested
+
+  // This is needed for silent refresh (refreshing tokens w/o a refresh_token)
+  // **AND** for logging in with a popup
+  silentRefreshRedirectUri: `${window.location.origin}/silent-refresh.html`,
+
+  useSilentRefresh: useSilentRefreshForCodeFlow,
+
+  showDebugInformation: true,
+
+  sessionChecksEnabled: true,
+
+  timeoutFactor: 0.01,
+  // disablePKCI: true,
+
+  clearHashAfterLogin: false
+};
diff --git a/src/app/auth.config.ts b/src/app/auth.config.ts
new file mode 100644
index 0000000..5b9dcdd
--- /dev/null
+++ b/src/app/auth.config.ts
@@ -0,0 +1,34 @@
+// This api will come in the next version
+
+import { AuthConfig } from 'angular-oauth2-oidc';
+
+export const authConfig: AuthConfig = {
+  // Url of the Identity Provider
+  issuer: 'https://idsvr4.azurewebsites.net',
+
+  // URL of the SPA to redirect the user to after login
+  // redirectUri: window.location.origin
+  //   + ((localStorage.getItem('useHashLocationStrategy') === 'true')
+  //     ? '/#/index.html'
+  //     : '/index.html'),
+
+  redirectUri: window.location.origin + '/index.html',
+
+  // URL of the SPA to redirect the user after silent refresh
+  silentRefreshRedirectUri: window.location.origin + '/silent-refresh.html',
+
+  // The SPA's id. The SPA is registerd with this id at the auth-server
+  clientId: 'implicit',
+
+  // set the scope for the permissions the client should request
+  // The first three are defined by OIDC. The 4th is a usecase-specific one
+  scope: 'openid profile email api',
+
+  // silentRefreshShowIFrame: true,
+
+  showDebugInformation: true,
+
+  sessionChecksEnabled: true
+
+  // timeoutFactor: 0.01,
+};
diff --git a/src/app/entities/flight.ts b/src/app/entities/flight.ts
new file mode 100644
index 0000000..4a758f6
--- /dev/null
+++ b/src/app/entities/flight.ts
@@ -0,0 +1,7 @@
+export interface Flight {
+  id: number; // int + double
+  from: string;
+  to: string;
+  date: string;
+  // JSON: ISO-String 2016-12-24T17:00:00.000+01:00
+}
diff --git a/src/app/flight-booking/alt-flight-card/alt-flight-card.component.html b/src/app/flight-booking/alt-flight-card/alt-flight-card.component.html
new file mode 100644
index 0000000..a284039
--- /dev/null
+++ b/src/app/flight-booking/alt-flight-card/alt-flight-card.component.html
@@ -0,0 +1,17 @@
+<div
+  style="padding:20px;"
+  [ngStyle]="{ 'background-color': selected ? 'orange' : 'lightsteelblue' }"
+>
+  <h2>{{ item.from }} - {{ item.to }}</h2>
+  <p>Flugnr. #{{ item.id }}</p>
+  <p>Datum: {{ item.date | date: 'dd.MM.yyyy HH:mm' }}</p>
+
+  <p>
+    <input
+      type="button"
+      value="Auswählen"
+      class="btn btn-default"
+      (click)="select()"
+    />
+  </p>
+</div>
diff --git a/src/app/flight-booking/alt-flight-card/alt-flight.card.component.ts b/src/app/flight-booking/alt-flight-card/alt-flight.card.component.ts
new file mode 100644
index 0000000..5bfa1e1
--- /dev/null
+++ b/src/app/flight-booking/alt-flight-card/alt-flight.card.component.ts
@@ -0,0 +1,16 @@
+import { Component, EventEmitter, Input, Output } from '@angular/core';
+import { Flight } from '../../entities/flight';
+
+@Component({
+  selector: 'alt-flight-card',
+  templateUrl: 'alt-flight-card.component.html'
+})
+export class AltFlightCardComponent {
+  @Input() item: Flight;
+  @Input() selected: boolean;
+  @Output() selectedChange = new EventEmitter<boolean>();
+
+  select() {
+    this.selectedChange.emit(true);
+  }
+}
diff --git a/src/app/flight-booking/alt-flight-card/flight-list.ts b/src/app/flight-booking/alt-flight-card/flight-list.ts
new file mode 100644
index 0000000..2dda665
--- /dev/null
+++ b/src/app/flight-booking/alt-flight-card/flight-list.ts
@@ -0,0 +1,26 @@
+import { Component, Input, Output, EventEmitter } from '@angular/core';
+import { Flight } from '../../entities/flight';
+@Component({
+  selector: 'flight-list',
+  template: `
+    <div class="row">
+      <div *ngFor="let f of flights" class="col-sm-6 col-md-4 col-lg-3 ">
+        <alt-flight-card
+          [item]="f"
+          [selected]="f == selectedFlight"
+          (selectedChange)="change(f)"
+        >
+        </alt-flight-card>
+      </div>
+    </div>
+  `
+})
+export class FlightListComponent {
+  @Input() flights: Flight[] = [];
+  @Input() selectedFlight: Flight;
+  @Output() selectedFlightChange = new EventEmitter();
+
+  change(f: Flight) {
+    this.selectedFlightChange.emit(f);
+  }
+}
diff --git a/src/app/flight-booking/flight-booking.component.html b/src/app/flight-booking/flight-booking.component.html
new file mode 100644
index 0000000..038e991
--- /dev/null
+++ b/src/app/flight-booking/flight-booking.component.html
@@ -0,0 +1,10 @@
+<div class="col-sm-3">
+  <ul class="nav nav-pills nav-stacked" style="margin-top:20px;">
+    <li><a [routerLink]="['./flight-search']">Flug auswählen</a></li>
+    <li><a [routerLink]="['./passenger-search']">Passagier auswählen</a></li>
+  </ul>
+</div>
+
+<div class="col-md-9">
+  <router-outlet></router-outlet>
+</div>
diff --git a/src/app/flight-booking/flight-booking.component.ts b/src/app/flight-booking/flight-booking.component.ts
new file mode 100644
index 0000000..100a6c8
--- /dev/null
+++ b/src/app/flight-booking/flight-booking.component.ts
@@ -0,0 +1,8 @@
+import { Component } from '@angular/core';
+import { FlightService } from './services/flight.service';
+
+@Component({
+  selector: 'flight-booking',
+  templateUrl: './flight-booking.component.html'
+})
+export class FlightBookingComponent {}
diff --git a/src/app/flight-booking/flight-booking.module.ts b/src/app/flight-booking/flight-booking.module.ts
new file mode 100644
index 0000000..9c1f501
--- /dev/null
+++ b/src/app/flight-booking/flight-booking.module.ts
@@ -0,0 +1,37 @@
+import { NgModule } from '@angular/core';
+import { FlightSearchComponent } from './flight-search/flight-search.component';
+import { FlightCardComponent } from './flight-card/flight.card.component';
+import { AltFlightCardComponent } from './alt-flight-card/alt-flight.card.component';
+import { FlightListComponent } from './alt-flight-card/flight-list';
+import { PassengerSearchComponent } from './passenger-search/passenger-search.component';
+import { FlightEditComponent } from './flight-edit/flight-edit.component';
+import { FlightSearchReactiveComponent } from './flight-search-reactive/flight-search-reactive.component';
+import { CommonModule } from '@angular/common';
+import { FormsModule, ReactiveFormsModule } from '@angular/forms';
+import { SharedModule } from '../shared/shared.module';
+import { FlightBookingRouterModule } from './flight-booking.routes';
+import { FlightBookingComponent } from './flight-booking.component';
+import { FlightService } from './services/flight.service';
+
+@NgModule({
+  imports: [
+    CommonModule, // ngFor
+    FormsModule,
+    ReactiveFormsModule,
+    SharedModule,
+    FlightBookingRouterModule
+  ],
+  declarations: [
+    FlightSearchComponent,
+    FlightCardComponent,
+    AltFlightCardComponent,
+    FlightListComponent,
+    FlightSearchReactiveComponent,
+    PassengerSearchComponent,
+    FlightEditComponent,
+    FlightBookingComponent
+  ],
+  providers: [FlightService],
+  exports: []
+})
+export class FlightBookingModule {}
diff --git a/src/app/flight-booking/flight-booking.routes.ts b/src/app/flight-booking/flight-booking.routes.ts
new file mode 100644
index 0000000..ffbed7b
--- /dev/null
+++ b/src/app/flight-booking/flight-booking.routes.ts
@@ -0,0 +1,34 @@
+import { Routes, RouterModule } from '@angular/router';
+import { FlightSearchComponent } from './flight-search/flight-search.component';
+import { PassengerSearchComponent } from './passenger-search/passenger-search.component';
+import { FlightEditComponent } from './flight-edit/flight-edit.component';
+import { FlightBookingComponent } from './flight-booking.component';
+import { AuthGuard } from '../shared/auth/auth.guard';
+import { LeaveComponentGuard } from '../shared/deactivation/LeaveComponentGuard';
+
+let FLIGHT_BOOKING_ROUTES: Routes = [
+  {
+    path: '',
+    component: FlightBookingComponent,
+    canActivate: [AuthGuard],
+    children: [
+      {
+        path: 'flight-search',
+        component: FlightSearchComponent
+      },
+      {
+        path: 'passenger-search',
+        component: PassengerSearchComponent
+      },
+      {
+        path: 'flight-edit/:id',
+        component: FlightEditComponent,
+        canDeactivate: [LeaveComponentGuard]
+      }
+    ]
+  }
+];
+
+export let FlightBookingRouterModule = RouterModule.forChild(
+  FLIGHT_BOOKING_ROUTES
+);
diff --git a/src/app/flight-booking/flight-card/flight-card.component.html b/src/app/flight-booking/flight-card/flight-card.component.html
new file mode 100644
index 0000000..8502674
--- /dev/null
+++ b/src/app/flight-booking/flight-card/flight-card.component.html
@@ -0,0 +1,21 @@
+<div
+  style="padding:20px;"
+  [ngStyle]="{
+    'background-color': selectedItem == item ? 'orange' : 'lightsteelblue'
+  }"
+>
+  <h2>{{ item.from }} - {{ item.to }}</h2>
+  <p>Flugnr. #{{ item.id }}</p>
+  <p>Datum: {{ item.date | date: 'dd.MM.yyyy HH:mm' }}</p>
+
+  <p>
+    <input
+      type="button"
+      value="Auswählen"
+      class="btn btn-default"
+      (click)="select()"
+    />
+
+    <ng-content></ng-content>
+  </p>
+</div>
diff --git a/src/app/flight-booking/flight-card/flight.card.component.ts b/src/app/flight-booking/flight-card/flight.card.component.ts
new file mode 100644
index 0000000..34a8b1d
--- /dev/null
+++ b/src/app/flight-booking/flight-card/flight.card.component.ts
@@ -0,0 +1,16 @@
+import { Component, EventEmitter, Input, Output } from '@angular/core';
+import { Flight } from '../../entities/flight';
+
+@Component({
+  selector: 'flight-card',
+  templateUrl: './flight-card.component.html'
+})
+export class FlightCardComponent {
+  @Input() item: Flight;
+  @Input() selectedItem: Flight;
+  @Output() selectedItemChange = new EventEmitter<Flight>();
+
+  select() {
+    this.selectedItemChange.emit(this.item);
+  }
+}
diff --git a/src/app/flight-booking/flight-edit/flight-edit.component.ts b/src/app/flight-booking/flight-edit/flight-edit.component.ts
new file mode 100644
index 0000000..c01310d
--- /dev/null
+++ b/src/app/flight-booking/flight-edit/flight-edit.component.ts
@@ -0,0 +1,57 @@
+import { Component, OnInit } from '@angular/core';
+import { ActivatedRoute } from '@angular/router';
+
+@Component({
+  template: `
+    <h1>Flight Edit!</h1>
+    <p>Hier könnte auch der Datensatz mit der Id {{ id }} stehen!</p>
+
+    <div *ngIf="exitWarning.show" class="alert alert-warning">
+      <div>
+        Daten wurden nicht gespeichert! Trotzdem Maske verlassen?
+      </div>
+      <div>
+        <a
+          href="javascript:void(0)"
+          (click)="decide(true)"
+          class="btn btn-danger"
+          >Ja</a
+        >
+        <a
+          href="javascript:void(0)"
+          (click)="decide(false)"
+          class="btn btn-default"
+          >Nein</a
+        >
+      </div>
+    </div>
+  `
+})
+export class FlightEditComponent implements OnInit {
+  public id: string;
+
+  constructor(private route: ActivatedRoute) {
+    route.params.subscribe(p => {
+      this.id = p['id'];
+    });
+  }
+
+  ngOnInit() {}
+
+  exitWarning = {
+    show: false,
+    resolve: null
+  };
+
+  decide(decision: boolean) {
+    this.exitWarning.show = false;
+    this.exitWarning.resolve(decision);
+  }
+
+  canDeactivate() {
+    this.exitWarning.show = true;
+    return new Promise(resolve => {
+      this.exitWarning.resolve = resolve;
+    });
+  }
+}
diff --git a/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.css b/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.css
new file mode 100644
index 0000000..58741db
--- /dev/null
+++ b/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.css
@@ -0,0 +1,11 @@
+input.ng-valid {
+  border-left-style: solid;
+  border-left-color: forestgreen;
+  border-left-width: 5px;
+}
+
+input.ng-invalid {
+  border-left-style: solid;
+  border-left-color: hotpink;
+  border-left-width: 5px;
+}
diff --git a/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.html b/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.html
new file mode 100644
index 0000000..2ca31e6
--- /dev/null
+++ b/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.html
@@ -0,0 +1,94 @@
+<h1>Flight Search (Reactive) !</h1>
+
+<!--
+round-trip
+-->
+
+<form novalidate [formGroup]="filter">
+  <h2>Dynamisches Formular</h2>
+  <div *ngFor="let item of formDesc">
+    <label>{{ item.label }}</label>
+    <input [formControlName]="item.name" class="form-control" />
+  </div>
+
+  <h2>Statisches Formular</h2>
+
+  <div class="form-group">
+    <label>From</label>
+    <input class="form-control" formControlName="from" />
+
+    <div *ngIf="!filter.controls.from.valid && !filter.controls.from.pending">
+      Validierungsfehler. Bitte prüfen Sie Ihre Eingaben.
+    </div>
+
+    <div *ngIf="filter.controls.from.hasError('city')">
+      Diese Stadt wird nicht angefolgen
+    </div>
+
+    <div *ngIf="filter.controls.from.hasError('required')">
+      Dieses Feld ist ein Pflichtfeld
+    </div>
+  </div>
+
+  <div class="form-group">
+    <label>To</label>
+    <input class="form-control" formControlName="to" name="to" />
+  </div>
+  <div class="form-group">
+    <button
+      class="btn btn-primary"
+      name="btnSearch"
+      [disabled]="!filter.valid"
+      (click)="search()"
+    >
+      Search
+    </button>
+  </div>
+</form>
+<!--
+[ngClass]="{ 'active': f == selectedFlight }"
+-->
+<!--
+<table class="table table-striped">
+
+    <tr *ngFor="let f of flights" [ngStyle]="{ 'background-color': (f == selectedFlight) ? 'orange': '' } ">
+        <td>{{f.id}}</td>
+        <td>{{f.from | city:'short' }}</td>
+        <td>{{f.to | city:'long' }}</td>
+        <td>{{f.date | date:'dd.MM.yyyy HH:mm'}}</td>
+        <td><a (click)="select(f)">Auswählen</a></td>
+    </tr>
+</table>
+-->
+
+<div class="row">
+  <div *ngFor="let f of flights" class="col-sm-6 col-md-4 col-lg-3 ">
+    <flight-card [item]="f" [(selectedItem)]="selectedFlight"> </flight-card>
+
+    <!--
+        [selectedItem]="selectedFlight"
+                     (selectedItemChange)="selectedFlight = $event"
+        -->
+
+    <alt-flight-card
+      [item]="f"
+      [selected]="f == selectedFlight"
+      (selectedChange)="selectedFlight = f"
+    >
+    </alt-flight-card>
+  </div>
+</div>
+
+<!--
+<flight-list [flights]="flights" [(selectedFlight)]="selectedFlight">
+</flight-list>
+-->
+
+<div class="row" style="margin-top:40px">
+  <pre>
+Warenkorb
+----------------------
+{{ selectedFlight | json }}
+</pre
+  >
+</div>
diff --git a/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.ts b/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.ts
new file mode 100644
index 0000000..9c97d85
--- /dev/null
+++ b/src/app/flight-booking/flight-search-reactive/flight-search-reactive.component.ts
@@ -0,0 +1,76 @@
+import { Component } from '@angular/core';
+import { Flight } from '../../entities/flight';
+import { FlightService } from '../services/flight.service';
+import {
+  FormGroup,
+  FormBuilder,
+  Validators,
+  AbstractControl
+} from '@angular/forms';
+import { CityValidatorDirective } from '../../shared/validation/city.validator';
+
+@Component({
+  selector: 'flight-search-reactive',
+  templateUrl: 'flight-search-reactive.component.html',
+  providers: [FlightService],
+  styleUrls: ['flight-search-reactive.component.css']
+})
+export class FlightSearchReactiveComponent {
+  public flights: Array<Flight> = [];
+  public selectedFlight: Flight;
+
+  public filter: FormGroup;
+
+  public formDesc = [];
+
+  constructor(private flightService: FlightService, private fb: FormBuilder) {
+    this.formDesc.push({
+      label: 'Von',
+      name: 'from'
+    });
+
+    this.formDesc.push({
+      label: 'Nach',
+      name: 'to'
+    });
+
+    this.filter = fb.group({
+      from: [
+        'Graz',
+        [
+          Validators.required,
+          Validators.minLength(3),
+          (c: AbstractControl): any => {
+            if (c.value != 'Graz' && c.value != 'Hamburg') {
+              return {
+                city: true
+              };
+            }
+            return {};
+          }
+        ]
+      ],
+      to: ['Hamburg']
+    });
+
+    this.filter.valueChanges.subscribe(e => {
+      console.debug('formular geändert', e);
+    });
+
+    this.filter.controls['from'].valueChanges.subscribe(e => {
+      console.debug('from geändert', e);
+    });
+  }
+
+  public select(f: Flight): void {
+    this.selectedFlight = f;
+  }
+
+  public search(): void {
+    var value = this.filter.value;
+
+    this.flightService.find(value.from, value.to);
+
+    // .map(function(resp) { return resp.json() })
+  }
+}
diff --git a/src/app/flight-booking/flight-search/flight-search.component.css b/src/app/flight-booking/flight-search/flight-search.component.css
new file mode 100644
index 0000000..58741db
--- /dev/null
+++ b/src/app/flight-booking/flight-search/flight-search.component.css
@@ -0,0 +1,11 @@
+input.ng-valid {
+  border-left-style: solid;
+  border-left-color: forestgreen;
+  border-left-width: 5px;
+}
+
+input.ng-invalid {
+  border-left-style: solid;
+  border-left-color: hotpink;
+  border-left-width: 5px;
+}
diff --git a/src/app/flight-booking/flight-search/flight-search.component.html b/src/app/flight-booking/flight-search/flight-search.component.html
new file mode 100644
index 0000000..5c6291f
--- /dev/null
+++ b/src/app/flight-booking/flight-search/flight-search.component.html
@@ -0,0 +1,123 @@
+<h1>Flight Search!</h1>
+
+<!--
+round-trip
+-->
+
+<form #f="ngForm" novalidate round-trip>
+  <div *ngIf="f?.control?.hasError('round-trip')">
+    Rund-Flüge sind nicht möglich.
+  </div>
+
+  <div class="form-group">
+    <label>From</label>
+    <input
+      class="form-control"
+      [(ngModel)]="from"
+      name="from"
+      required
+      minlength="3"
+      maxlength="30"
+      city="Hamburg,Wien,Graz,Frankfurt,Luxemburg,Luxembourg"
+      async-city
+      pattern="[a-zA-ZöäüßÖÄÜ]+"
+    />
+
+    <div *ngIf="!f?.controls?.from?.valid && !f?.controls?.from?.pending">
+      Validierungsfehler. Bitte prüfen Sie Ihre Eingaben.
+      <pre>
+            {{ f.controls.from?.errors | json }}
+            </pre
+      >
+    </div>
+
+    <div *ngIf="f?.controls?.from?.hasError('async-city')">
+      Async-City: Die Stadt wird gerade wegen eines Unwetters nicht angeflogen.
+    </div>
+
+    <div *ngIf="f?.controls?.from?.pending">
+      <marquee>
+        Validierung wird ausgeführt. Bitte etwas warten!
+      </marquee>
+    </div>
+
+    <div *ngIf="f?.controls?.from?.hasError('required')">
+      Dieses Feld ist ein Pflichtfeld.
+    </div>
+
+    <div *ngIf="f?.controls?.from?.hasError('city')">
+      Diese Stadt wird nicht angeflogen.
+    </div>
+
+    <div *ngIf="f?.controls?.from?.hasError('minlength')">
+      Bitte erfassen Sie min. 3 Zeichen.
+    </div>
+    <div *ngIf="f?.controls?.from?.hasError('pattern')">
+      Bitte nur Buchstaben erfassen.
+    </div>
+  </div>
+
+  <div class="form-group">
+    <label>To</label>
+    <input class="form-control" [(ngModel)]="to" name="to" />
+  </div>
+  <div class="form-group">
+    <button
+      class="btn btn-primary"
+      name="btnSearch"
+      [disabled]="!f.valid"
+      (click)="search()"
+    >
+      Search
+    </button>
+  </div>
+</form>
+<!--
+[ngClass]="{ 'active': f == selectedFlight }"
+-->
+<!--
+<table class="table table-striped">
+
+    <tr *ngFor="let f of flights" [ngStyle]="{ 'background-color': (f == selectedFlight) ? 'orange': '' } ">
+        <td>{{f.id}}</td>
+        <td>{{f.from | city:'short' }}</td>
+        <td>{{f.to | city:'long' }}</td>
+        <td>{{f.date | date:'dd.MM.yyyy HH:mm'}}</td>
+        <td><a (click)="select(f)">Auswählen</a></td>
+    </tr>
+</table>
+-->
+
+<div class="row">
+  <div *ngFor="let f of flights" class="col-sm-6 col-md-4 col-lg-3 ">
+    <flight-card [item]="f" [(selectedItem)]="selectedFlight"> </flight-card>
+
+    <!--
+        [selectedItem]="selectedFlight"
+                     (selectedItemChange)="selectedFlight = $event"
+        -->
+    <!--
+        <alt-flight-card
+                [item]="f"
+                [selected]="f == selectedFlight"
+                (selectedChange)="selectedFlight = f">
+        </alt-flight-card>
+-->
+  </div>
+</div>
+
+<!--
+<flight-list [flights]="flights" [(selectedFlight)]="selectedFlight">
+</flight-list>
+-->
+
+<div class="row" style="margin-top:40px">
+  <pre>
+Warenkorb
+----------------------
+{{ selectedFlight | json }}
+</pre
+  >
+</div>
+
+<button class="btn btn-primary" (click)="refresh()">Refresh Token</button>
diff --git a/src/app/flight-booking/flight-search/flight-search.component.ts b/src/app/flight-booking/flight-search/flight-search.component.ts
new file mode 100644
index 0000000..b14de22
--- /dev/null
+++ b/src/app/flight-booking/flight-search/flight-search.component.ts
@@ -0,0 +1,56 @@
+import { Component } from '@angular/core';
+import { OAuthService } from 'angular-oauth2-oidc';
+import { Flight } from '../../entities/flight';
+import { FlightService } from '../services/flight.service';
+
+@Component({
+  selector: 'flight-search',
+  templateUrl: './flight-search.component.html',
+  styleUrls: ['./flight-search.component.css']
+})
+export class FlightSearchComponent {
+  public from: string = 'Graz';
+  public to: string = '';
+  public selectedFlight: Flight;
+
+  constructor(
+    private flightService: FlightService,
+    private oauthService: OAuthService
+  ) {
+    console.debug('access-token', this.oauthService.getAccessToken());
+  }
+
+  // cmp.flights
+  public get flights() {
+    return this.flightService.flights;
+  }
+
+  public select(f: Flight): void {
+    this.selectedFlight = f;
+  }
+
+  public search(): void {
+    this.flightService.find(this.from, this.to);
+
+    // .map(function(resp) { return resp.json() })
+  }
+
+  refresh() {
+    this.oauthService.oidc = true;
+
+    if (
+      !this.oauthService.useSilentRefresh &&
+      this.oauthService.responseType === 'code'
+    ) {
+      this.oauthService
+        .refreshToken()
+        .then(info => console.debug('refresh ok', info))
+        .catch(err => console.error('refresh error', err));
+    } else {
+      this.oauthService
+        .silentRefresh()
+        .then(info => console.debug('silent refresh ok', info))
+        .catch(err => console.error('silent refresh error', err));
+    }
+  }
+}
diff --git a/src/app/flight-booking/passenger-search/passenger-search.component.ts b/src/app/flight-booking/passenger-search/passenger-search.component.ts
new file mode 100644
index 0000000..794b19b
--- /dev/null
+++ b/src/app/flight-booking/passenger-search/passenger-search.component.ts
@@ -0,0 +1,18 @@
+import { Component, OnInit } from '@angular/core';
+import { OAuthService } from 'angular-oauth2-oidc';
+
+@Component({
+  template: `
+    <h1>PassengerSearch</h1>
+    <p>Platzhalter-Seite. Hier könnte auch Ihre Werbung stehen ;-)</p>
+    <p><button (click)="refresh()">Refresh</button></p>
+  `
+})
+export class PassengerSearchComponent implements OnInit {
+  constructor(private oauthService: OAuthService) {}
+  ngOnInit() {}
+
+  refresh() {
+    this.oauthService.silentRefresh();
+  }
+}
diff --git a/src/app/flight-booking/services/flight.service.ts b/src/app/flight-booking/services/flight.service.ts
new file mode 100644
index 0000000..27171c6
--- /dev/null
+++ b/src/app/flight-booking/services/flight.service.ts
@@ -0,0 +1,36 @@
+import { Injectable, Inject } from '@angular/core';
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { BASE_URL } from '../../app.tokens';
+import { Observable } from 'rxjs';
+import { Flight } from '../../entities/flight';
+import { OAuthService } from 'angular-oauth2-oidc';
+
+@Injectable()
+export class FlightService {
+  constructor(
+    private oauthService: OAuthService,
+    private http: HttpClient,
+    @Inject(BASE_URL) private baseUrl: string
+  ) {}
+
+  public flights: Array<Flight> = [];
+
+  find(from: string, to: string): void {
+    let url = this.baseUrl + '/api/flight';
+    let headers = new HttpHeaders().set('Accept', 'application/json');
+    //.set('Authorization', 'Bearer ' + this.oauthService.getAccessToken());
+
+    let params = new HttpParams().set('from', from).set('to', to);
+
+    this.http
+      .get<Flight[]>(url, { headers, params })
+      .subscribe(
+        flights => {
+          this.flights = flights;
+        },
+        err => {
+          console.warn('status', err.status);
+        }
+      );
+  }
+}
diff --git a/src/app/flight-history/flight-history.component.ts b/src/app/flight-history/flight-history.component.ts
new file mode 100644
index 0000000..2c7cf8d
--- /dev/null
+++ b/src/app/flight-history/flight-history.component.ts
@@ -0,0 +1,13 @@
+import { Component } from '@angular/core';
+
+@Component({
+  template: `
+    <h1>Flight History</h1>
+    <ul>
+      <li>Graz - Hamburg</li>
+      <li>Hamburg - Frankfurt</li>
+      <li>Frankfurt - Graz</li>
+    </ul>
+  `
+})
+export class FlightHistoryComponent {}
diff --git a/src/app/home/home.component.html b/src/app/home/home.component.html
new file mode 100644
index 0000000..b1247c8
--- /dev/null
+++ b/src/app/home/home.component.html
@@ -0,0 +1,113 @@
+<strong>Status: {{ givenName ? 'logged in' : 'logged out' }} </strong>
+<h1 *ngIf="!givenName">Welcome!</h1>
+<h1 *ngIf="givenName">Welcome, {{ givenName }} {{ familyName }}!</h1>
+
+<div *ngIf="login" style="color: red">
+  You have to login before you can search for flights.
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <p>Login with Authorization Server</p>
+    <div class="checkbox">
+      <label
+        ><input type="checkbox" [(ngModel)]="requestAccessToken" /> Request
+        AccessToken</label
+      >
+    </div>
+  </div>
+  <div class="panel-body">
+    <p>Test settings</p>
+    <div class="checkbox">
+      <label
+        ><input type="checkbox" [(ngModel)]="useHashLocationStrategy" /> Use
+        hash location strategy (Only works with Code Flow)</label
+      >
+    </div>
+  </div>
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <h2>Login with Implicit Flow</h2>
+    <p>
+      <button class="btn btn-default" (click)="loginImplicit()">Login</button>
+      <button class="btn btn-default" (click)="logout()">Logout</button>
+    </p>
+    <b>Username/Password:</b> max/geheim
+  </div>
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <h2>Login with Implicit Flow in popup</h2>
+    <p>
+      <button class="btn btn-default" (click)="loginImplicitInPopup()">
+        Login
+      </button>
+      <button class="btn btn-default" (click)="logout()">Logout</button>
+    </p>
+    <p><b>Username/Password:</b> max/geheim</p>
+    <p>
+      <b>Note:</b> When using IE, some security settings block the communication
+      with popups. This prevents that this feature works.
+    </p>
+  </div>
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <h2>Login with Code Flow</h2>
+    <p>
+      <button class="btn btn-default" (click)="loginCode()">Login</button>
+      <button class="btn btn-default" (click)="logout()">Logout</button>
+    </p>
+    <b>Username/Password:</b> alice/alice
+  </div>
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <h2>Login with Code Flow in popup</h2>
+    <p>
+      <button class="btn btn-default" (click)="loginCodeInPopup()">
+        Login
+      </button>
+      <button class="btn btn-default" (click)="logout()">Logout</button>
+    </p>
+    <p><b>Username/Password:</b> alice/alice</p>
+    <p>
+      <b>Note:</b> When using IE, some security settings block the communication
+      with popups. This prevents that this feature works.
+    </p>
+  </div>
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <p><b>access_token_expiration:</b> {{ access_token_expiration }}</p>
+    <p><b>id_token_expiration:</b> {{ id_token_expiration }}</p>
+  </div>
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <p><b>access_token:</b> {{ access_token }}</p>
+    <p><b>id_token:</b> {{ id_token }}</p>
+    <div *ngIf="userProfile">
+      <b>user profile:</b>
+      <pre>{{ userProfile | json }}</pre>
+    </div>
+  </div>
+</div>
+
+<div class="panel panel-default">
+  <div class="panel-body">
+    <h2>Further Actions</h2>
+    <button class="btn btn-default" (click)="refresh()">Refresh</button>
+
+    <button class="btn btn-default" (click)="loadUserProfile()">
+      Load User Profile
+    </button>
+  </div>
+</div>
diff --git a/src/app/home/home.component.ts b/src/app/home/home.component.ts
new file mode 100644
index 0000000..3b7f334
--- /dev/null
+++ b/src/app/home/home.component.ts
@@ -0,0 +1,156 @@
+import { authConfig } from '../auth.config';
+import { Component, OnInit } from '@angular/core';
+import { OAuthService } from 'angular-oauth2-oidc';
+import { authCodeFlowConfig } from '../auth-code-flow.config';
+import { ActivatedRoute } from '@angular/router';
+
+@Component({
+  templateUrl: './home.component.html'
+})
+export class HomeComponent implements OnInit {
+  loginFailed: boolean = false;
+  userProfile: object;
+  usePopup: boolean;
+  login: false;
+
+  constructor(
+    private route: ActivatedRoute,
+    private oauthService: OAuthService
+  ) {}
+
+  ngOnInit() {
+    this.route.params.subscribe(p => {
+      this.login = p['login'];
+    });
+
+    // This would directly (w/o user interaction) redirect the user to the
+    // login page if they are not already logged in.
+    /*
+        this.oauthService.loadDiscoveryDocumentAndTryLogin().then(_ => {
+            if (!this.oauthService.hasValidIdToken() || !this.oauthService.hasValidAccessToken()) {
+              this.oauthService.initImplicitFlow('some-state');
+            }
+        });
+    */
+  }
+
+  async loginImplicit() {
+    // Tweak config for implicit flow
+    this.oauthService.configure(authConfig);
+    await this.oauthService.loadDiscoveryDocument();
+    sessionStorage.setItem('flow', 'implicit');
+
+    this.oauthService.initLoginFlow('/some-state;p1=1;p2=2?p3=3&p4=4');
+    // the parameter here is optional. It's passed around and can be used after logging in
+  }
+
+  async loginImplicitInPopup() {
+    // Tweak config for implicit flow
+    this.oauthService.configure(authConfig);
+    await this.oauthService.loadDiscoveryDocument();
+    sessionStorage.setItem('flow', 'implicit');
+
+    this.oauthService.initLoginFlowInPopup().then(() => {
+      this.loadUserProfile();
+    });
+    // the parameter here is optional. It's passed around and can be used after logging in
+  }
+
+  async loginCode() {
+    // Tweak config for code flow
+    this.oauthService.configure(authCodeFlowConfig);
+    await this.oauthService.loadDiscoveryDocument();
+    sessionStorage.setItem('flow', 'code');
+
+    this.oauthService.initLoginFlow('/some-state;p1=1;p2=2?p3=3&p4=4');
+    // the parameter here is optional. It's passed around and can be used after logging in
+  }
+
+  async loginCodeInPopup() {
+    // Tweak config for code flow
+    this.oauthService.configure(authCodeFlowConfig);
+    await this.oauthService.loadDiscoveryDocument();
+    sessionStorage.setItem('flow', 'code');
+
+    this.oauthService.initLoginFlowInPopup().then(() => {
+      this.loadUserProfile();
+    });
+  }
+
+  logout() {
+    // this.oauthService.logOut();
+    this.oauthService.revokeTokenAndLogout();
+  }
+
+  loadUserProfile(): void {
+    this.oauthService.loadUserProfile().then(up => (this.userProfile = up));
+  }
+
+  get givenName() {
+    var claims = this.oauthService.getIdentityClaims();
+    if (!claims) return null;
+    return claims['given_name'];
+  }
+
+  get familyName() {
+    var claims = this.oauthService.getIdentityClaims();
+    if (!claims) return null;
+    return claims['family_name'];
+  }
+
+  refresh() {
+    this.oauthService.oidc = true;
+
+    if (
+      !this.oauthService.useSilentRefresh &&
+      this.oauthService.responseType === 'code'
+    ) {
+      this.oauthService
+        .refreshToken()
+        .then(info => console.debug('refresh ok', info))
+        .catch(err => console.error('refresh error', err));
+    } else {
+      this.oauthService
+        .silentRefresh()
+        .then(info => console.debug('silent refresh ok', info))
+        .catch(err => console.error('silent refresh error', err));
+    }
+  }
+
+  set requestAccessToken(value: boolean) {
+    this.oauthService.requestAccessToken = value;
+    localStorage.setItem('requestAccessToken', '' + value);
+  }
+
+  get requestAccessToken() {
+    return this.oauthService.requestAccessToken;
+  }
+
+  set useHashLocationStrategy(value: boolean) {
+    const oldValue = localStorage.getItem('useHashLocationStrategy') === 'true';
+    if (value !== oldValue) {
+      localStorage.setItem('useHashLocationStrategy', value ? 'true' : 'false');
+      window.location.reload();
+    }
+  }
+
+  get useHashLocationStrategy() {
+    return localStorage.getItem('useHashLocationStrategy') === 'true';
+  }
+
+  get id_token() {
+    return this.oauthService.getIdToken();
+  }
+
+  get access_token() {
+    return this.oauthService.getAccessToken();
+  }
+
+  get id_token_expiration() {
+    return this.oauthService.getIdTokenExpiration();
+  }
+
+  get access_token_expiration() {
+    return this.oauthService.getAccessTokenExpiration();
+  }
+}
diff --git a/src/app/shared/auth/auth.guard.ts b/src/app/shared/auth/auth.guard.ts
new file mode 100644
index 0000000..b137ab4
--- /dev/null
+++ b/src/app/shared/auth/auth.guard.ts
@@ -0,0 +1,20 @@
+import { Injectable } from '@angular/core';
+import { CanActivate, Router } from '@angular/router';
+import { OAuthService } from 'angular-oauth2-oidc';
+
+@Injectable()
+export class AuthGuard implements CanActivate {
+  constructor(private router: Router, private oauthService: OAuthService) {}
+
+  canActivate() {
+    if (
+      this.oauthService.hasValidAccessToken() &&
+      this.oauthService.hasValidIdToken()
+    ) {
+      return true;
+    } else {
+      this.router.navigate(['/home', { login: true }]);
+      return false;
+    }
+  }
+}
diff --git a/src/app/shared/date/date.component.ts b/src/app/shared/date/date.component.ts
new file mode 100644
index 0000000..6eefdae
--- /dev/null
+++ b/src/app/shared/date/date.component.ts
@@ -0,0 +1,38 @@
+import { Component, Input, OnInit, OnChanges } from '@angular/core';
+
+@Component({
+  selector: 'date-component',
+  template: `
+    <div>{{ day }}.{{ month }}.{{ year }} {{ hour }}:{{ minute }}</div>
+  `
+})
+export class DateComponent implements OnInit, OnChanges {
+  @Input() date: string;
+
+  day;
+  month;
+  year;
+  hour;
+  minute;
+
+  constructor() {
+    console.debug('ctrl');
+  }
+
+  ngOnInit() {}
+
+  ngOnChanges(change) {
+    // if(change.date) { ... }
+
+    console.debug('change', change);
+
+    let date = new Date(this.date);
+
+    this.day = date.getDate();
+    this.month = date.getMonth() + 1;
+    this.year = date.getFullYear();
+
+    this.hour = date.getHours();
+    this.minute = date.getMinutes();
+  }
+}
diff --git a/src/app/shared/deactivation/LeaveComponentGuard.ts b/src/app/shared/deactivation/LeaveComponentGuard.ts
new file mode 100644
index 0000000..18858d3
--- /dev/null
+++ b/src/app/shared/deactivation/LeaveComponentGuard.ts
@@ -0,0 +1,15 @@
+import {
+  CanDeactivate,
+  ActivatedRouteSnapshot,
+  RouterStateSnapshot
+} from '@angular/router';
+
+export class LeaveComponentGuard implements CanDeactivate<any> {
+  canDeactivate(
+    component: any,
+    route: ActivatedRouteSnapshot,
+    state: RouterStateSnapshot
+  ): Promise<boolean> {
+    return component.canDeactivate();
+  }
+}
diff --git a/src/app/shared/pipes/city.pipe.ts b/src/app/shared/pipes/city.pipe.ts
new file mode 100644
index 0000000..3e7269c
--- /dev/null
+++ b/src/app/shared/pipes/city.pipe.ts
@@ -0,0 +1,28 @@
+import { Pipe, PipeTransform } from '@angular/core';
+
+@Pipe({
+  name: 'city',
+  pure: true
+})
+export class CityPipe implements PipeTransform {
+  transform(value: any, ...args: any[]): any {
+    let fmt = args[0]; // short, long
+    let short, long;
+
+    switch (value) {
+      case 'Graz':
+        long = 'Flughafen Graz Thalerhof';
+        short = 'GRZ';
+        break;
+      case 'Hamburg':
+        long = 'Airport Hamburg Fuhlsbüttl Helmut Schmidt';
+        short = 'HAM';
+        break;
+      default:
+        long = short = 'ROM';
+    }
+
+    if (fmt == 'short') return short;
+    return long;
+  }
+}
diff --git a/src/app/shared/preload/custom-preloading.strategy.ts b/src/app/shared/preload/custom-preloading.strategy.ts
new file mode 100644
index 0000000..4e64939
--- /dev/null
+++ b/src/app/shared/preload/custom-preloading.strategy.ts
@@ -0,0 +1,12 @@
+import { PreloadingStrategy, Route } from '@angular/router';
+import { Observable } from 'rxjs';
+
+export class CustomPreloadingStrategy implements PreloadingStrategy {
+  preload(route: Route, fn: () => Observable<any>): Observable<any> {
+    //return Observable.of(true).delay(7000).flatMap(_ => fn());
+
+    if (true) {
+      return fn();
+    }
+  }
+}
diff --git a/src/app/shared/shared.module.ts b/src/app/shared/shared.module.ts
new file mode 100644
index 0000000..3d66239
--- /dev/null
+++ b/src/app/shared/shared.module.ts
@@ -0,0 +1,41 @@
+import { NgModule, ModuleWithProviders } from '@angular/core';
+import { FormsModule } from '@angular/forms';
+import { CommonModule } from '@angular/common';
+import { CityPipe } from './pipes/city.pipe';
+import { CityValidatorDirective } from './validation/city.validator';
+import { RoundTrip } from './validation/roundtrip.validator';
+import { AsyncCityValidatorDirective } from './validation/async-city.validator';
+import { DateComponent } from './date/date.component';
+import { AuthGuard } from './auth/auth.guard';
+import { LeaveComponentGuard } from './deactivation/LeaveComponentGuard';
+import { CustomPreloadingStrategy } from './preload/custom-preloading.strategy';
+
+@NgModule({
+  imports: [
+    FormsModule, // [(ngModel)]
+    CommonModule // ngFor, ngIf, ngStyle, ngClass, date, json
+  ],
+  providers: [],
+  declarations: [
+    CityPipe,
+    CityValidatorDirective,
+    AsyncCityValidatorDirective,
+    RoundTrip,
+    DateComponent
+  ],
+  exports: [
+    CityPipe,
+    CityValidatorDirective,
+    AsyncCityValidatorDirective,
+    RoundTrip,
+    DateComponent
+  ]
+})
+export class SharedModule {
+  static forRoot(): ModuleWithProviders<SharedModule> {
+    return {
+      providers: [AuthGuard, LeaveComponentGuard, CustomPreloadingStrategy],
+      ngModule: SharedModule
+    };
+  }
+}
diff --git a/src/app/shared/validation/async-city.validator.ts b/src/app/shared/validation/async-city.validator.ts
new file mode 100644
index 0000000..b11d546
--- /dev/null
+++ b/src/app/shared/validation/async-city.validator.ts
@@ -0,0 +1,27 @@
+import { Directive } from '@angular/core';
+import { NG_ASYNC_VALIDATORS, AbstractControl } from '@angular/forms';
+
+@Directive({
+  selector: 'input[async-city]',
+  providers: [
+    {
+      provide: NG_ASYNC_VALIDATORS,
+      useExisting: AsyncCityValidatorDirective,
+      multi: true
+    }
+  ]
+})
+export class AsyncCityValidatorDirective {
+  validate(ctrl: AbstractControl): Promise<any> {
+    return new Promise((resolve: Function) => {
+      setTimeout(() => {
+        if (ctrl.value == 'Graz' || ctrl.value == 'Hamburg') {
+          resolve({});
+          return;
+        }
+
+        resolve({ 'async-city': false });
+      }, 100);
+    });
+  }
+}
diff --git a/src/app/shared/validation/city.validator.ts b/src/app/shared/validation/city.validator.ts
new file mode 100644
index 0000000..9ce9aea
--- /dev/null
+++ b/src/app/shared/validation/city.validator.ts
@@ -0,0 +1,50 @@
+import { Directive, Input, Attribute } from '@angular/core';
+import {
+  NG_VALIDATORS,
+  Validator,
+  AbstractControl,
+  FormGroup
+} from '@angular/forms';
+
+@Directive({
+  selector: 'input[city]', // <input city>
+  providers: [
+    {
+      provide: NG_VALIDATORS,
+      useExisting: CityValidatorDirective,
+      multi: true
+    }
+  ]
+})
+export class CityValidatorDirective implements Validator {
+  // @Input() city: string;
+
+  constructor(@Attribute('city') private city: string) {}
+
+  validate(c: AbstractControl): any {
+    let formGroup = <FormGroup>c.root;
+    let otherValueCtrl = formGroup.controls['to'];
+
+    if (!otherValueCtrl) return {};
+
+    let otherValue = otherValueCtrl.value;
+
+    if (otherValue == c.value) {
+      return {
+        city: 'rundflug'
+      };
+    }
+
+    if (!this.city) return {};
+
+    let allowed = this.city.split(','); //['Graz', 'Hamburg', 'Wien', 'Frankfurt'];
+
+    if (allowed.indexOf(c.value) == -1) {
+      return {
+        city: true
+      };
+    }
+
+    return {};
+  }
+}
diff --git a/src/app/shared/validation/roundtrip.validator.ts b/src/app/shared/validation/roundtrip.validator.ts
new file mode 100644
index 0000000..319a132
--- /dev/null
+++ b/src/app/shared/validation/roundtrip.validator.ts
@@ -0,0 +1,34 @@
+import { Directive } from '@angular/core';
+import {
+  FormGroup,
+  Validator,
+  AbstractControl,
+  NG_VALIDATORS,
+  FormGroupDirective
+} from '@angular/forms';
+
+@Directive({
+  selector: 'form[round-trip]',
+  providers: [{ provide: NG_VALIDATORS, useExisting: RoundTrip, multi: true }]
+})
+export class RoundTrip implements Validator {
+  validate(control: AbstractControl): any {
+    let formGroup = <FormGroup>control;
+    let fromCtrl = formGroup.controls['from'];
+    let toCtrl = formGroup.controls['to'];
+
+    if (!fromCtrl || !toCtrl) return {};
+
+    let from = fromCtrl.value;
+    let to = toCtrl.value;
+
+    if (from == to) {
+      return {
+        'round-trip': {
+          city: from
+        }
+      };
+    }
+    return {};
+  }
+}
diff --git a/src/flags.ts b/src/flags.ts
new file mode 100644
index 0000000..100788c
--- /dev/null
+++ b/src/flags.ts
@@ -0,0 +1,6 @@
+// Use HashLocationStrategy for routing?
+export const useHash = true;
+
+// Set this to true, to use silent refresh; otherwise the example
+// uses the refresh_token via an AJAX coll to get new tokens.
+export const useSilentRefreshForCodeFlow = false;
diff --git a/src/silent-refresh.html b/src/silent-refresh.html
new file mode 100644
index 0000000..aee8712
--- /dev/null
+++ b/src/silent-refresh.html
@@ -0,0 +1,27 @@
+<html>
+  <body>
+    <script>
+      var checks = [
+        /[\?|&|#]code=/,
+        /[\?|&|#]error=/,
+        /[\?|&|#]token=/,
+        /[\?|&|#]id_token=/
+      ];
+
+      function isResponse(str) {
+        var count = 0;
+        if (!str) return false;
+        for (var i = 0; i < checks.length; i++) {
+          if (str.match(checks[i])) return true;
+        }
+        return false;
+      }
+
+      var message = isResponse(location.hash)
+        ? location.hash
+        : '#' + location.search;
+
+      (window.opener || window.parent).postMessage(message, location.origin);
+    </script>
+  </body>
+</html>
diff --git a/src/typings.d.ts b/src/typings.d.ts
new file mode 100644
index 0000000..ef5c7bd
--- /dev/null
+++ b/src/typings.d.ts
@@ -0,0 +1,5 @@
+/* SystemJS module definition */
+declare var module: NodeModule;
+interface NodeModule {
+  id: string;
+}
diff --git a/tsconfig.json b/tsconfig.json
index d3c1011..2806b84 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,7 +5,7 @@
     "baseUrl": "./",
     "outDir": "./dist/out-tsc",
     "forceConsistentCasingInFileNames": true,
-    "strict": true,
+    "strict": false,
     "noImplicitReturns": true,
     "noFallthroughCasesInSwitch": true,
     "sourceMap": true,