refactoring

.idea/php.xml

@@ -10,6 +10,7 @@
     <option name="highlightLevel" value="WARNING" />
     <option name="transferred" value="true" />
   </component>
+  <component name="PhpProjectSharedConfiguration" php_language_level="8.5" />
   <component name="PhpStanOptionsConfiguration">
     <option name="transferred" value="true" />
   </component>

content/deleteAccount.php

@@ -0,0 +1,19 @@
+<?php
+require_once "php/model/LocalUserDAO.php";
+
+$dao = new LocalUserDAO();
+
+/*
+    Deregistrierung
+    Funktion: Entfernt User aus Dummy-Daten und beendet Session
+*/
+
+if (isset($_SESSION["user_email"])) {
+    $dao->deleteUser($_SESSION["user_email"]);
+}
+
+$_SESSION = [];
+session_destroy();
+
+header("Location: index.php");
+exit();

content/login.php

@@ -1,3 +1,7 @@
+<?php
+$error = $error ?? null;
+?>
+
 <!--
     Form: Login-Bereich
     Funktion: Benutzerauthentifizierung und Zugang zum eigenen Profil, Erstellen von Beiträgen, etc.
@@ -7,26 +11,43 @@
 
         <h1>Bitte anmelden</h1>
 
-        <form>
+        <?php if ($error): ?>
-            <label id ="inputEmail" class="screenreader-only">E-Mail Adresse / </label>
+            <p style="color:red;">
+                <?php echo htmlspecialchars($error); ?>
+            </p>
+        <?php endif; ?>
+
+        <form method="post" action="index.php?pfad=login">
 
             <p class="input-label">Benutzername/E-Mail-Adresse:</p>
-            <input type="email" name="email" class="login-input" placeholder="E-Mail-Adresse" required autofocus>
+            <input type="email"
+                   name="email"
+                   class="login-input"
+                   placeholder="E-Mail-Adresse"
+                   required
+                   autofocus>
 
             <p class="input-label">Passwort:</p>
-            <input type="password" name="password" class="login-input" placeholder="Passwort" required>
+            <input type="password"
+                   name="password"
+                   class="login-input"
+                   placeholder="Passwort"
+                   required>
 
-            <div class="checkbox-wrapper">
+            <button type="submit"
-                <label>
+                    value="anmelden"
-                    <input type="checkbox" name="remember-me" value="1"> angemeldet bleiben
+                    name="loginSubmit"
-                </label>
+                    class="login-button">
-            </div>
+                anmelden
-
+            </button>
-            <button type="submit" value="anmelden" name="loginSubmit" class="login-button">anmelden</button>
 
             <div class="register-link">
-                <a href="register.php">Noch keinen Account? Jetzt hier registrieren!</a>
+                <a href="index.php?pfad=register">
+                    Noch keinen Account? Jetzt hier registrieren!
+                </a>
             </div>
+
         </form>
+
     </div>
 </main>

content/logout.php

@@ -0,0 +1,6 @@
+<?php
+$_SESSION = [];
+session_destroy();
+
+header("Location: index.php");
+exit();

content/profile.php

@@ -1,46 +1,45 @@
-<!--
+<?php
-    Content: Profil
+include_once 'php/controller/profile-controller.php';
-    Inhalt: Das eigene Profil, wenn man angemeldet ist. Dort hat man die Möglichkeit seine Angaben zu ändern.
+
--->
+$user = $user ?? null;
+?>
 
 <main class="form-page">
-
     <div class="form-container">
+
+        <h1>Mein Profil</h1>
+
         <form>
-
+            <label class="input-label">Name</label>
-            <label class="input-label">Vorname</label>
+            <input type="text"
-
+                   class="login-input"
-            <input type="text" name="Vorname" class="login-input" required
+                   readonly
-                   placeholder="Vorname"
+                   value="<?php echo htmlspecialchars($user["username"] ?? ""); ?>">
-                   value="<?php //DB-Daten ?>">
-
-            <label class="input-label">Nachname</label>
-            <input type="text" name="Nachname" class="login-input" required
-                   placeholder="Nachname"
-                   value="<?php //DB-Daten ?>">
 
             <label class="input-label">Email-Adresse</label>
-            <input type="email" name="Email" class="login-input" required
+            <input type="email"
-                   placeholder="mustermann@web.de"
+                   class="login-input"
-                   value="<?php //DB-Daten ?>">
+                   readonly
+                   value="<?php echo htmlspecialchars($user["email"] ?? ""); ?>">
 
             <label class="input-label">Passwort</label>
-            <input type="password" name="Passwort" class="login-input"
+            <input type="password"
-                   required placeholder="Passwort">
+                   class="login-input"
-
+                   readonly
-            <br>
+                   value="********">
-
-            <button type="submit" class="login-button">
-                Speichern
-            </button>
-
-            <br><br>
-
-            <button type="button" class="login-button">
-                Account löschen
-            </button>
-
         </form>
 
+        <br>
+
+        <a href="index.php?pfad=deleteAccount" class="login-button">
+            Account löschen
+        </a>
+
+        <br><br>
+
+        <a href="index.php?pfad=logout" class="login-button">
+            Abmelden
+        </a>
+
     </div>
 </main>

content/register.php

@@ -1,3 +1,9 @@
+<?php
+include_once 'php/controller/register-controller.php';
+
+$error = $error ?? null;
+?>
+
 <!--
     Form: Registrierung
     Funktion: Erstellung neuer Benutzerkonten
@@ -7,26 +13,50 @@
 
         <h1>Jetzt Registrieren!</h1>
 
-        <form>
+        <?php if ($error): ?>
+            <p style="color:red;">
+                <?php echo htmlspecialchars($error); ?>
+            </p>
+        <?php endif; ?>
+
+        <form method="post" action="index.php?pfad=register">
+
             <p class="input-label">Email:</p>
-            <input type="email" name="email" class="login-input" placeholder="mustermann@web.de" required>
+            <input type="email"
+                   name="email"
+                   class="login-input"
+                   placeholder="mustermann@web.de"
+                   required>
 
             <p class="input-label">Vorname:</p>
-            <input type="text" name="vorname" class="login-input" placeholder="Max" required>
+            <input type="text"
+                   name="vorname"
+                   class="login-input"
+                   placeholder="Max"
+                   required>
 
             <p class="input-label">Nachname:</p>
-            <input type="text" name="nachname" class="login-input" placeholder="Mustermann" required>
+            <input type="text"
+                   name="nachname"
+                   class="login-input"
+                   placeholder="Mustermann"
+                   required>
 
             <p class="input-label">Passwort:</p>
-            <input type="password" name="password" class="login-input" placeholder="Passwort" required>
+            <input type="password"
+                   name="password"
+                   class="login-input"
+                   placeholder="Passwort"
+                   required>
 
-            <div class="checkbox-wrapper">
+            <button type="submit"
-                <label>
+                    value="register"
-                    <input type="checkbox" value="remember-me"> angemeldet bleiben
+                    name="registerSubmit"
-                </label>
+                    class="login-button">
-            </div>
+                kostenlos registrieren
+            </button>
 
-            <button type="submit" value="anmelden" name="loginSubmit" class="login-button">kostenlos registrieren</button>
         </form>
+
     </div>
 </main>

content/search-results.php

@@ -1,125 +0,0 @@
-<?php
-session_start();
-?>
-<!--
-    Seite: Suchergebnisse
-    Inhalt: Zeigt die Ergebnisse einer Suche an
--->
-<div class="s-res-layout-grid">
-
-    <!-- Links: Seitenleiste für Filter und Suche -->
-    <aside class="s-res-sidebar">
-
-        <!-- Suchleiste Box -->
-        <div class="s-res-sidebar-box">
-            <h3 class="s-res-sidebar-title">Suche anpassen</h3>
-            <form action="#" method="GET" class="s-res-search-form">
-                <input type="search" id="site-search" name="q" placeholder="Suchen..." class="nav__search">
-                <button type="submit" class="nav__search-button">Suchen</button>
-            </form>
-        </div>
-
-        <!-- Sortierfuntion Box -->
-        <div class="s-res-sidebar-box">
-            <h3 class="s-res-sidebar-title">Sortierung</h3>
-            <div class="s-res-filter-group">
-                <label class="s-res-filter-option">
-                    <input type="radio" name="sort" value="alphabet" checked>
-                    <span>Alphabetisch</span>
-                </label>
-                <label class="s-res-filter-option">
-                    <input type="radio" name="sort" value="likes">
-                    <span>Beliebtheit (Likes)</span>
-                </label>
-                <label class="s-res-filter-option">
-                    <input type="radio" name="sort" value="newest">
-                    <span>Neueste Beiträge</span>
-                </label>
-                <label class="s-res-filter-option">
-                    <input type="radio" name="sort" value="oldest">
-                    <span>Älteste Beiträge</span>
-                </label>
-            </div>
-        </div>
-
-    </aside>
-
-    <main class="s-res-main-content">
-
-        <div class="s-res-header">
-            <h1 class="s-res-main-title">Suchergebnisse</h1>
-            <p class="s-res-meta">3 Treffer für Ihre Suchanfrage</p>
-        </div>
-
-        <!-- Ergebnisliste -->
-        <div class="s-res-list">
-
-            <?php
-            if(isset($_SESSION['message']) && $_SESSION['message'] == "new_search_results"): ?>
-            <!-- TODO: Hier die Beiträge ausgeben. -->
-            <?php elseif (isset($_SESSION["message"]) && $_SESSION["message"] == "missing_parameters"): ?>
-            <p>
-                Bitte überprüfe deine Sucheingabe und versuche es erneut!
-            </p>
-            <?php endif; ?>
-            <?php
-            unset($_SESSION["message"]);
-            ?>
-
-            <!-- Beispielbeitrag -->
-            <div class="s-res-item">
-                <div class="s-res-content">
-                    <h2 class="s-res-item-title">
-                        <a href="#" class="s-res-link">Pythagoras</a>
-                    </h2>
-                    <p class="s-res-author">Von: <span class="s-res-author-name">Max Mustermann</span></p>
-                </div>
-                <div class="s-res-arrow">&rarr;</div>
-            </div>
-
-            <!-- Beispielbeitrag -->
-            <div class="s-res-item">
-                <div class="s-res-content">
-                    <h2 class="s-res-item-title">
-                        <a href="#" class="s-res-link">Pythagoras</a>
-                    </h2>
-                    <p class="s-res-author">Von: <span class="s-res-author-name">Max Mustermann</span></p>
-                </div>
-                <div class="s-res-arrow">&rarr;</div>
-            </div>
-
-            <!-- Beispielbeitrag -->
-            <div class="s-res-item">
-                <div class="s-res-content">
-                    <h2 class="s-res-item-title">
-                        <a href="#" class="s-res-link">Pythagoras</a>
-                    </h2>
-                    <p class="s-res-author">Von: <span class="s-res-author-name">Max Mustermann</span></p>
-                </div>
-                <div class="s-res-arrow">&rarr;</div>
-            </div>
-
-        </div>
-        <div class="s-res-pagination-footer">
-
-            <!-- Auswahl der Ergebnisse pro Seite -->
-            <div class="s-res-limit-selector">
-                <label for="s-res-per-page" class="s-res-limit-label">Ergebnisse pro Seite:</label>
-                <select id="s-res-per-page" name="limit" class="s-res-limit-select">
-                    <option value="10" selected>10</option>
-                    <option value="20">20</option>
-                    <option value="50">50</option>
-                    <option value="100">100</option>
-                </select>
-            </div>
-
-            <div class="s-res-page-navigation">
-                <button type="button" class="s-res-page-btn" disabled>&laquo;</button>
-                <button type="button" class="s-res-page-btn s-res-page-btn-active">1</button>
-                <button type="button" class="s-res-page-btn">&raquo;</button>
-            </div>
-
-        </div>
-    </main>
-
-</div>

css/footer.css

@@ -1,5 +1,7 @@
 /* Footer‑Grundlayout */
 footer {
+    position: fixed;
+    bottom: 0;
     width: 100%;
     background: #333d43;
     text-align: center;

css/main.css

@@ -3,19 +3,12 @@ main {
     max-width:1200px;
     margin: 0 auto;
     padding: 20px;
-
-    width: 100%;
-    box-sizing: border-box;
 }
 
 body {
     background-color: #eef2f7;
     color: #1f2937;
     margin: 0;
-
-    min-height: 100vh;
-    display: grid;
-    grid-template-rows: auto 1fr auto; /* Header(auto), Inhalt (bekommt Rest), Footer(auto) */
 }
 
 a, button, input, select, textarea, label, main{
@@ -24,8 +17,7 @@ a, button, input, select, textarea, label, main{
 
 .flexbox {
     display: flex;
-    flex-direction: row;
+    flex-direction: column;
-    flex-wrap: wrap;
     gap: 20px;
     margin-top: 30px;
 }
@@ -37,7 +29,6 @@ a, button, input, select, textarea, label, main{
     border: 1px solid #dbe3ec;
     box-shadow: 0 4px 12px rgba(0,0,0,0.08);
     transition: transform 0.2s, box-shadow 0.2s;
-    flex: 1 1 300px;
 }
 
 .container:hover {

css/navbar.css

@@ -205,10 +205,6 @@ CSS für die navbar
         margin-left: 4px;
     }
 
-    .nav__search-button:hover {
-        background-color: #f8f9fa;
-    }
-
     /* restliche desktop-navbar aus */
     .nav__center,
     .nav__right .nav__button,
@@ -231,9 +227,6 @@ CSS für die navbar
         padding: 2rem 1rem;
         box-shadow: 2px 0 10px rgba(0,0,0,0.5);
         overflow-y: auto;
-        
-        /* Genug Abstand oben rechts, damit Links nicht hinter dem X liegen */
-        padding: 4rem 1.5rem 2rem 1.5rem;
     }
 
     .nav__checkbox:checked ~ .nav__mobile-menu {
@@ -244,18 +237,6 @@ CSS für die navbar
         left: 0;
     }
 
-    .nav__close-btn {
-        position: absolute;
-        top: 1rem;
-        right: 1.5rem;
-        font-size: 2rem;
-        color: #fff;
-        cursor: pointer;
-        line-height: 1;
-        user-select: none;
-        transition: color 0.2s ease, transform 0.2s ease;
-    }
-
     .nav__mobile-menu a {
         color: #fff;
         text-decoration: none;

css/search-results.css

@@ -1,263 +0,0 @@
-/*
-CSS für die Suchergebnis-Seite
- */
-/* Container und Layout-Schutz vor globalen Styles */
-.s-res-layout-grid {
-    box-sizing: border-box;
-    max-width: 95%; /* Nutzt jetzt 95% der Bildschirmbreite statt starrer Pixel */
-    width: 95%;  /* Erhöht das Limit für extrem große Monitore von 1200px auf 1600px */
-    margin: 2rem auto;
-    padding: 0 1rem;
-    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
-    color: #212529;
-    line-height: 1.5;
-
-    /* Grid für die Zweispaltigkeit */
-    display: grid;
-    grid-template-columns: 320px 1fr; /* Seitenleiste leicht verbreitert, Inhalt nimmt den gesamten Rest ein */
-    gap: 2.5rem; /* Etwas mehr Abstand zwischen Seitenleiste und Inhalt für das breitere Layout */
-}
-
-.s-res-layout-grid * {
-    box-sizing: border-box;
-}
-
-/* --- SEITENLEISTE (FILTER & SUCHE) --- */
-.s-res-sidebar {
-    display: flex;
-    flex-direction: column;
-    gap: 1.5rem;
-}
-
-.s-res-sidebar-box {
-    background-color: #ffffff;
-    border: 1px solid #e2e8f0;
-    border-radius: 8px;
-    padding: 1.25rem;
-}
-
-.s-res-sidebar-title {
-    font-size: 1rem;
-    font-weight: 700;
-    color: #1a202c;
-    margin: 0 0 1rem 0;
-    text-transform: uppercase;
-    letter-spacing: 0.05em;
-}
-
-/* Formular & deine Suchleisten-Klassen */
-.s-res-search-form {
-    display: flex;
-    align-items: center;
-}
-
-/* Filter Radio-Buttons */
-.s-res-filter-group {
-    display: flex;
-    flex-direction: column;
-    gap: 0.75rem;
-}
-
-.s-res-filter-option {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-    cursor: pointer;
-    font-size: 0.95rem;
-    color: #4a5568;
-}
-
-.s-res-filter-option input[type="radio"] {
-    margin: 0;
-    accent-color: #3182ce; /* Moderne Färbung des Radio-Buttons */
-}
-
-/* --- HAUPTINHALT (ERGEBNISSE) --- */
-.s-res-main-content {
-    min-width: 0; /* Verhindert das Ausbrechen von Flex-Elementen */
-}
-
-.s-res-header {
-    margin-bottom: 2rem;
-    border-bottom: 2px solid #dee2e6;
-    padding-bottom: 1rem;
-}
-
-.s-res-main-title {
-    font-size: 2rem;
-    color: #1a202c;
-    margin: 0 0 0.5rem 0;
-    font-weight: 700;
-}
-
-.s-res-meta {
-    color: #6c757d;
-    font-size: 0.95rem;
-    margin: 0;
-}
-
-.s-res-list {
-    display: flex;
-    flex-direction: column;
-    gap: 1rem;
-}
-
-/* Einzelner Beitrag */
-.s-res-item {
-    background-color: #ffffff;
-    border: 1px solid #e2e8f0;
-    border-radius: 8px;
-    padding: 1.25rem;
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
-}
-
-.s-res-item:hover {
-    transform: translateY(-2px);
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
-    border-color: #cbd5e1;
-}
-
-.s-res-content {
-    flex: 1;
-}
-
-.s-res-item-title {
-    font-size: 1.25rem;
-    margin: 0 0 0.25rem 0;
-    font-weight: 600;
-}
-
-.s-res-link {
-    color: #3182ce;
-    text-decoration: none;
-    transition: color 0.2s ease;
-}
-
-.s-res-link:hover {
-    text-decoration: underline;
-    color: #2b6cb0;
-}
-
-.s-res-author {
-    font-size: 0.875rem;
-    color: #4a5568;
-    margin: 0;
-}
-
-.s-res-author-name {
-    font-weight: 600;
-    color: #2d3748;
-}
-
-.s-res-arrow {
-    font-size: 1.5rem;
-    color: #a0aec0;
-    padding-left: 1rem;
-    transition: color 0.2s ease, transform 0.2s ease;
-}
-
-.s-res-item:hover .s-res-arrow {
-    color: #3182ce;
-    transform: translateX(3px);
-}
-
-/* --- ERGEBNISSE PRO SEITE & PAGINIERUNG --- */
-.s-res-pagination-footer {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    margin-top: 2rem;
-    padding-top: 1.5rem;
-    border-top: 1px solid #e2e8f0;
-}
-
-/* Dropdown-Auswahl */
-.s-res-limit-selector {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-}
-
-.s-res-limit-label {
-    font-size: 0.9rem;
-    color: #4a5568;
-}
-
-.s-res-limit-select {
-    padding: 0.35rem 1.5rem 0.35rem 0.5rem;
-    font-size: 0.9rem;
-    color: #2d3748;
-    background-color: #ffffff;
-    border: 1px solid #cbd5e1;
-    border-radius: 4px;
-    cursor: pointer;
-    outline: none;
-    transition: border-color 0.2s;
-
-    /* Diskreter nativer Pfeil-Style */
-    appearance: none;
-    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://w3.org' viewBox='0 0 24 24' fill='none' stroke='%234a5568' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
-    background-repeat: no-repeat;
-    background-position: right 0.4rem center;
-    background-size: 1em;
-}
-
-.s-res-limit-select:focus {
-    border-color: #3182ce;
-}
-
-/* Seitennummern Navigation */
-.s-res-page-navigation {
-    display: flex;
-    gap: 0.25rem;
-}
-
-.s-res-page-btn {
-    background-color: #ffffff;
-    border: 1px solid #cbd5e1;
-    color: #4a5568;
-    padding: 0.35rem 0.75rem;
-    font-size: 0.9rem;
-    font-weight: 500;
-    border-radius: 4px;
-    cursor: pointer;
-    transition: all 0.2s ease;
-}
-
-.s-res-page-btn:hover:not(:disabled) {
-    background-color: #f8f9fa;
-    border-color: #cbd5e1;
-    color: #2d3748;
-}
-
-.s-res-page-btn-active {
-    background-color: #3182ce;
-    border-color: #3182ce;
-    color: #ffffff;
-    cursor: default;
-}
-
-.s-res-page-btn:disabled {
-    background-color: #f1f5f9;
-    border-color: #e2e8f0;
-    color: #94a3b8;
-    cursor: not-allowed;
-}
-
-/* --- RESPONSIVE DESIGN (MOBILGERÄTE) --- */
-@media (max-width: 768px) {
-    .s-res-layout-grid {
-        grid-template-columns: 1fr; /* Stapelt Seitenleiste und Inhalt untereinander */
-        gap: 1.5rem;
-        margin: 1rem auto;
-    }
-    .s-res-pagination-footer {
-        flex-direction: column;
-        gap: 1rem;
-        align-items: flex-start;
-    }
-}
-

data/users.json

@@ -0,0 +1 @@
+[]

includes/footer.php

@@ -1,5 +1,5 @@
 <footer>
-    <a href="index.php?pfad=impressum">Impressum</a>
+    <a href="impressum.php">Impressum</a>
-    <a href="index.php?pfad=datenschutz">Datenschutz</a>
+    <a href="datenschutz.php">Datenschutz</a>
-    <a href="index.php?pfad=nutzungsbedingungen">Nutzungsbedingungen</a>
+    <a href="nutzungsbedingungen.php">Nutzungsbedingungen</a>
 </footer>

includes/navbar.php

@@ -1,26 +1,37 @@
+<?php
+session_start();
+?>
+
 <!--
 Globales Menü, wird via PHP später in alle Seiten eingebunden
 -->
 <nav class="nav">
     <div class="nav__left">
         <a href="index.php" class="nav__logo">
-	        <img src="images/logos/logo_full.png" alt="Logo">
+            <img src="images/logos/logo_full.png" alt="Logo">
-	    </a>
+        </a>
     </div>
 
     <!-- Mobile navbar mit Burger-Symbol -->
     <input type="checkbox" id="nav-toggle" class="nav__checkbox">
     <label for="nav-toggle" id="mobile-nav">
-        <span>☰</span> <!-- Burger Icon Symbol -->
+        <span>☰</span>
     </label>
 
     <ul id="mobile-nav" class="nav__mobile-menu">
-        <li>
+
-            <label for="nav-toggle" class="nav__close-btn">&times;</label>
+        <?php if (isset($_SESSION['user'])): ?>
-        </li>
+
-        <li><a href="index.php?pfad=profile">Profil</a></li>
+            <li><a href="index.php?pfad=profile">Profil</a></li>
-        <li><a href="index.php?pfad=login">Anmelden</a></li>
+            <li><a href="index.php?pfad=logout">Abmelden</a></li>
-        <li><a href="index.php?pfad=register">Registrieren</a></li>
+
+        <?php else: ?>
+
+            <li><a href="index.php?pfad=login">Anmelden</a></li>
+            <li><a href="index.php?pfad=register">Registrieren</a></li>
+
+        <?php endif; ?>
+
         <li>
             <label class="nav__mobile-label">Sprachen</label>
             <ul class="nav__mobile-submenu">
@@ -38,7 +49,7 @@ Globales Menü, wird via PHP später in alle Seiten eingebunden
                 <li><a href="index.php?pfad=mathe">Mathematik</a></li>
                 <li><a href="index.php?pfad=biologie">Biologie</a></li>
                 <li><a href="index.php?pfad=chemie">Chemie</a></li>
-                <li><a href="index.php?pfad=englisch">Physik</a></li>
+                <li><a href="index.php?pfad=physik">Physik</a></li>
                 <li><a href="index.php?pfad=informatik">Informatik</a></li>
                 <li><a href="index.php?pfad=astronomie">Astronomie</a></li>
             </ul>
@@ -84,6 +95,7 @@ Globales Menü, wird via PHP später in alle Seiten eingebunden
                 <a href="index.php?pfad=literatur">Literatur</a>
             </div>
         </div>
+
         <div class="nav__item nav__dropdown">
             <button class="nav__dropdown-toggle">MINT</button>
             <div class="nav__dropdown-menu">
@@ -95,6 +107,7 @@ Globales Menü, wird via PHP später in alle Seiten eingebunden
                 <a href="index.php?pfad=astronomie">Astronomie</a>
             </div>
         </div>
+
         <div class="nav__item nav__dropdown">
             <button class="nav__dropdown-toggle">Gesellschaft & Werte</button>
             <div class="nav__dropdown-menu">
@@ -111,6 +124,7 @@ Globales Menü, wird via PHP später in alle Seiten eingebunden
                 <a href="index.php?pfad=theater">Theater</a>
             </div>
         </div>
+
         <div class="nav__item nav__dropdown">
             <button class="nav__dropdown-toggle">Technik & Praxis</button>
             <div class="nav__dropdown-menu">
@@ -123,13 +137,36 @@ Globales Menü, wird via PHP später in alle Seiten eingebunden
     </div>
 
     <div class="nav__right">
-        <a href="index.php?pfad=profile" class="nav_item nav__link">Profil</a>
+
-        <div class="nav__search">
+        <?php if (isset($_SESSION['user'])): ?>
-        <?php
+
-            include_once 'search.php';
+            <a href="index.php?pfad=profile" class="nav__item nav__link">
-        ?>
+                Profil
-        </div>
+            </a>
-	    <a href = "index.php?pfad=login" class="nav__item nav__button">Anmelden</a>
+
-	    <a href = "index.php?pfad=register" class="nav__item nav__button">Registrieren</a>
+            <div class="nav__search">
+                <?php include_once 'search.php'; ?>
+            </div>
+
+            <a href="index.php?pfad=logout" class="nav__item nav__button">
+                Abmelden
+            </a>
+
+        <?php else: ?>
+
+            <div class="nav__search">
+                <?php include_once 'search.php'; ?>
+            </div>
+
+            <a href="index.php?pfad=login" class="nav__item nav__button">
+                Anmelden
+            </a>
+
+            <a href="index.php?pfad=register" class="nav__item nav__button">
+                Registrieren
+            </a>
+
+        <?php endif; ?>
+
     </div>
 </nav>

index.php

@@ -1,40 +1,72 @@
-<!--
+<?php
-    Seite: Index der Lernplattform
+session_start();
-    Funktion: Webseitengerüst, Anzeigen von Content
+ob_start();
--->
-<!DOCTYPE html>
-<html lang="de">
 
-<head>
+$pfad = $_GET["pfad"] ?? "home";
-    <meta charset="utf-8">
-    <meta name="description" content="EduForge">
-    <meta name="author" content="Niklas Ortmann">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <link rel="icon" type="image/x-icon" href="images/logos/logo_icon.ico">
-    <link rel="stylesheet" href="css/main.css">
-    <link rel="stylesheet" href="css/navbar.css">
-    <link rel="stylesheet" href="css/footer.css">
-    <link rel="stylesheet" href="css/search-results.css">
-    <title>EduForge</title>
-</head>
 
+/*
+    Controller für Aktionen werden vor der HTML-Ausgabe geladen,
+    damit Weiterleitungen mit header() funktionieren.
+*/
+if ($pfad === "login") {
+    include_once "php/controller/login-controller.php";
+}
 
-<body>
+if ($pfad === "register") {
+    include_once "php/controller/register-controller.php";
+}
+
+if ($pfad === "logout") {
+    include_once "content/logout.php";
+    exit();
+}
+
+if ($pfad === "deleteAccount") {
+    include_once "content/deleteAccount.php";
+    exit();
+}
+?>
+
+    <!--
+        Seite: Index der Lernplattform
+        Funktion: Webseitengerüst, Anzeigen von Content
+    -->
+    <!DOCTYPE html>
+    <html lang="de">
+
+    <head>
+        <meta charset="utf-8">
+        <meta name="description" content="EduForge">
+        <meta name="author" content="Niklas Ortmann">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+        <link rel="icon" type="image/x-icon" href="images/logos/logo_icon.ico">
+        <link rel="stylesheet" href="css/main.css">
+        <link rel="stylesheet" href="css/navbar.css">
+        <link rel="stylesheet" href="css/footer.css">
+        <title>EduForge</title>
+    </head>
+
+    <body>
 
     <?php
-	include_once 'includes/navbar.php';
+    include_once 'includes/navbar.php';
-	//Dynamischer Inhalt:
+
-    if (isset($_GET["pfad"])) {
+    /*
-        if (file_exists('content/' . $_GET["pfad"] . '.php')) {
+        Dynamischer Inhalt:
-            include_once 'content/' . $_GET["pfad"] . '.php';
+        Je nach pfad-Parameter wird die passende Datei aus content geladen.
-        } else {
+    */
-            include_once 'content/404.php';
+    if (file_exists('content/' . $pfad . '.php')) {
-        }
+        include_once 'content/' . $pfad . '.php';
     } else {
-        include_once 'content/home.php';
+        include_once 'content/404.php';
     }
+
     include_once 'includes/footer.php';
     ?>
-</body>
 
-</html>
+    </body>
+    </html>
+
+<?php
+ob_end_flush();
+?>

nutzungsbedingungen.php

@@ -10,10 +10,10 @@
     <meta name="description" content="EduForge">
     <meta name="author" content="Niklas Ortmann">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <link rel="icon" type="image/x-icon" href="../images/logos/logo_icon.ico">
+    <link rel="icon" type="image/x-icon" href="images/logos/logo_icon.ico">
-    <link rel="stylesheet" href="../css/main.css">
+    <link rel="stylesheet" href="css/main.css">
-    <link rel="stylesheet" href="../css/navbar.css">
+    <link rel="stylesheet" href="css/navbar.css">
-    <link rel="stylesheet" href="../css/footer.css">
+    <link rel="stylesheet" href="css/footer.css">
     <title>EduForge</title>
 </head>
 

php/controller/login-controller.php

@@ -0,0 +1,30 @@
+<?php
+
+require_once "php/model/LocalUserDAO.php";
+
+$dao = new LocalUserDAO();
+$error = null;
+
+/*
+    Verarbeitung des Login-Formulars
+    Funktion: Prüft Benutzerdaten und erstellt Session für eingeloggten Nutzer
+*/
+if ($_SERVER["REQUEST_METHOD"] === "POST") {
+
+    $email = $_POST["email"] ?? "";
+    $password = $_POST["password"] ?? "";
+
+    $user = $dao->findUser($email);
+
+    if ($user && password_verify($password, $user["password"])) {
+
+        $_SESSION["user"] = $user["username"];
+        $_SESSION["user_email"] = $user["email"];
+
+        header("Location: index.php");
+        exit();
+
+    } else {
+        $error = "Login fehlgeschlagen. Bitte überprüfe deine Eingaben.";
+    }
+}

php/controller/profile-controller.php

@@ -0,0 +1,20 @@
+<?php
+
+require_once "php/model/LocalUserDAO.php";
+
+$dao = new LocalUserDAO();
+
+if (!isset($_SESSION["user"])) {
+    header("Location: index.php?pfad=login");
+    exit();
+}
+
+$user = $dao->findUser($_SESSION["user_email"] ?? "");
+
+if (!$user) {
+    $_SESSION = [];
+    session_destroy();
+
+    header("Location: index.php?pfad=login");
+    exit();
+}

php/controller/register-controller.php

@@ -0,0 +1,40 @@
+<?php
+
+require_once "php/model/LocalUserDAO.php";
+
+$dao = new LocalUserDAO();
+$error = null;
+
+/*
+    Verarbeitung des Registrierungs-Formulars
+    Funktion: Erstellt neuen Benutzer und speichert ihn im DAO + Session
+*/
+if ($_SERVER["REQUEST_METHOD"] === "POST") {
+
+    $email = $_POST["email"] ?? "";
+    $vorname = $_POST["vorname"] ?? "";
+    $nachname = $_POST["nachname"] ?? "";
+    $password = password_hash(
+        $_POST["password"] ?? "",
+        PASSWORD_DEFAULT
+    );
+
+    if ($dao->findUser($email)) {
+
+        $error = "Diese E-Mail-Adresse ist bereits registriert.";
+
+    } else {
+
+        $dao->addUser(
+            $email,
+            $vorname . " " . $nachname,
+            $password
+        );
+
+        $_SESSION["user"] = $vorname . " " . $nachname;
+        $_SESSION["user_email"] = $email;
+
+        header("Location: index.php");
+        exit();
+    }
+}

php/controller/search-results-controller.php

@@ -1,29 +0,0 @@
-<?php
-session_start();
-require_once '../model/LocalArticleManager.php';
-require_once '../model/ArticleManager.php';
-
-if ($_SERVER["REQUEST_METHOD"] === "POST") {
-    if(!isset($_POST["search"])){
-        $_SESSION["message"] = "missing_parameters";
-        header("location: ../../index.php?pfad=search-results");
-    } else {
-
-        $search = $_POST["search"];
-
-        try {
-            $articleManager = ArticleManager::getInstance();
-            $articleManager->search($search); // TODO: Methode implementieren.
-        } catch (Exception $e){
-            $_SESSION["message"] = "internal_error";
-        }
-        $_SESSION["message"] = "new_search_results";
-        // TODO: Liste mit Artikeln in der Suchreihenfolge übertragen.
-        // Weiterleitung zur Suchergebnisanzeige
-        header("location: ../../index.php?pfad=search-results");
-        exit();
-
-    }
-}
-
-?>

php/model/LocalUserDAO.php

@@ -0,0 +1,64 @@
+<?php
+require_once "UserDAOInterface.php";
+
+class LocalUserDAO implements UserDAOInterface {
+
+    private string $file = "data/users.json";
+
+    private function loadUsers() {
+        if (!file_exists($this->file)) {
+            return [];
+        }
+
+        $json = file_get_contents($this->file);
+        $users = json_decode($json, true);
+
+        return is_array($users) ? $users : [];
+    }
+
+    private function saveUsers($users) {
+        file_put_contents(
+            $this->file,
+            json_encode($users, JSON_PRETTY_PRINT)
+        );
+    }
+
+    public function findUser($email) {
+        $users = $this->loadUsers();
+
+        foreach ($users as $user) {
+            if ($user["email"] === $email) {
+                return $user;
+            }
+        }
+
+        return null;
+    }
+
+    public function addUser($email, $username, $password) {
+        $users = $this->loadUsers();
+
+        $users[] = [
+            "email" => $email,
+            "username" => $username,
+            "password" => $password
+        ];
+
+        $this->saveUsers($users);
+    }
+
+    public function deleteUser($email) {
+        $users = $this->loadUsers();
+
+        foreach ($users as $i => $user) {
+            if ($user["email"] === $email) {
+                unset($users[$i]);
+                $users = array_values($users);
+                $this->saveUsers($users);
+                return true;
+            }
+        }
+
+        return false;
+    }
+}

php/model/UserDAOInterface.php

@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Interface für den Zugriff auf Benutzerdaten.
+ *
+ * Definiert die Methoden, die jede UserDAO-Implementierung
+ * bereitstellen muss.
+ */
+interface UserDAOInterface {
+
+    /**
+     * Sucht einen Benutzer anhand seiner E-Mail-Adresse.
+     *
+     * @param string $email E-Mail-Adresse des gesuchten Benutzers
+     * @return array|null Benutzerdaten als Array oder null
+     */
+    public function findUser($email);
+
+    /**
+     * Fügt einen neuen Benutzer hinzu.
+     *
+     * @param string $email E-Mail-Adresse des Benutzers
+     * @param string $username Benutzername des Benutzers
+     * @param string $password Passwort des Benutzers
+     * @return void
+     */
+    public function addUser($email, $username, $password);
+
+    /**
+     * Löscht einen Benutzer anhand seiner E-Mail-Adresse.
+     *
+     * @param string $email E-Mail-Adresse des zu löschenden Benutzers
+     * @return bool true, wenn der Benutzer gelöscht wurde, sonst false
+     */
+    public function deleteUser($email);
+}