Set up modern PHP MVC project structure for GetYourBand platform

- Implemented clean MVC architecture with Router, Controller, and Model base classes - Created database migrations for users, bands, bookings, reviews, and availability - Set up Tailwind CSS with yellow color scheme and modern design - Added Alpine.js for reactive JavaScript components - Configured Vite for asset building and hot module replacement - Created authentication and role-based middleware - Implemented helper functions and configuration system - Added comprehensive README with setup instructions - Configured Apache with proper rewrite rules and security headers - Set up Composer and npm package management with modern dependencies
2025-12-02 21:31:08 +00:00
parent 798a2785e7
commit 143fe3d488
37 changed files with 2015 additions and 0 deletions
@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Controllers;
+
+use App\Core\Controller;
+use App\Models\Band;
+
+class HomeController extends Controller
+{
+    public function index(): void
+    {
+        $bandModel = new Band();
+
+        // Get top-rated bands
+        $featuredBands = $bandModel->query(
+            "SELECT * FROM bands
+             WHERE is_approved = 1 AND is_active = 1
+             ORDER BY average_rating DESC, total_reviews DESC
+             LIMIT 6"
+        );
+
+        $this->view('home', [
+            'featuredBands' => $featuredBands,
+        ]);
+    }
+}
@@ -0,0 +1,99 @@
+<?php
+
+namespace App\Core;
+
+class Controller
+{
+    protected function view(string $view, array $data = []): void
+    {
+        extract($data);
+
+        $viewPath = __DIR__ . '/../Views/' . str_replace('.', '/', $view) . '.php';
+
+        if (!file_exists($viewPath)) {
+            throw new \RuntimeException("View not found: {$view}");
+        }
+
+        require_once $viewPath;
+    }
+
+    protected function json($data, int $status = 200): void
+    {
+        http_response_code($status);
+        header('Content-Type: application/json');
+        echo json_encode($data);
+        exit;
+    }
+
+    protected function redirect(string $path): void
+    {
+        header("Location: {$path}");
+        exit;
+    }
+
+    protected function back(): void
+    {
+        $referer = $_SERVER['HTTP_REFERER'] ?? '/';
+        $this->redirect($referer);
+    }
+
+    protected function input(string $key, $default = null)
+    {
+        return $_POST[$key] ?? $_GET[$key] ?? $default;
+    }
+
+    protected function validate(array $rules): array
+    {
+        $errors = [];
+        $data = [];
+
+        foreach ($rules as $field => $fieldRules) {
+            $value = $this->input($field);
+            $fieldRules = explode('|', $fieldRules);
+
+            foreach ($fieldRules as $rule) {
+                if ($rule === 'required' && empty($value)) {
+                    $errors[$field][] = ucfirst($field) . ' is required';
+                }
+
+                if (str_starts_with($rule, 'min:')) {
+                    $min = (int) substr($rule, 4);
+                    if (strlen($value) < $min) {
+                        $errors[$field][] = ucfirst($field) . " must be at least {$min} characters";
+                    }
+                }
+
+                if (str_starts_with($rule, 'max:')) {
+                    $max = (int) substr($rule, 4);
+                    if (strlen($value) > $max) {
+                        $errors[$field][] = ucfirst($field) . " must not exceed {$max} characters";
+                    }
+                }
+
+                if ($rule === 'email' && !filter_var($value, FILTER_VALIDATE_EMAIL)) {
+                    $errors[$field][] = ucfirst($field) . ' must be a valid email';
+                }
+            }
+
+            $data[$field] = $value;
+        }
+
+        if (!empty($errors)) {
+            $_SESSION['errors'] = $errors;
+            $_SESSION['old'] = $data;
+            $this->back();
+        }
+
+        return $data;
+    }
+
+    protected function auth()
+    {
+        return $_SESSION['user'] ?? null;
+    }
+
+    protected function isAuthenticated(): bool
+    {
+        return isset($_SESSION['user']);
+    }
+}
@@ -0,0 +1,100 @@
+<?php
+
+namespace App\Core;
+
+use Database\Database;
+use PDO;
+
+abstract class Model
+{
+    protected PDO $db;
+    protected string $table;
+    protected string $primaryKey = 'id';
+    protected array $fillable = [];
+
+    public function __construct()
+    {
+        $this->db = Database::connect();
+    }
+
+    public function all(): array
+    {
+        $stmt = $this->db->query("SELECT * FROM {$this->table}");
+        return $stmt->fetchAll();
+    }
+
+    public function find(int $id): ?array
+    {
+        $stmt = $this->db->prepare("SELECT * FROM {$this->table} WHERE {$this->primaryKey} = ? LIMIT 1");
+        $stmt->execute([$id]);
+        $result = $stmt->fetch();
+        return $result ?: null;
+    }
+
+    public function where(string $column, $value): array
+    {
+        $stmt = $this->db->prepare("SELECT * FROM {$this->table} WHERE {$column} = ?");
+        $stmt->execute([$value]);
+        return $stmt->fetchAll();
+    }
+
+    public function first(string $column, $value): ?array
+    {
+        $stmt = $this->db->prepare("SELECT * FROM {$this->table} WHERE {$column} = ? LIMIT 1");
+        $stmt->execute([$value]);
+        $result = $stmt->fetch();
+        return $result ?: null;
+    }
+
+    public function create(array $data): int
+    {
+        $data = $this->filterFillable($data);
+        $columns = implode(', ', array_keys($data));
+        $placeholders = implode(', ', array_fill(0, count($data), '?'));
+
+        $sql = "INSERT INTO {$this->table} ({$columns}) VALUES ({$placeholders})";
+        $stmt = $this->db->prepare($sql);
+        $stmt->execute(array_values($data));
+
+        return (int) $this->db->lastInsertId();
+    }
+
+    public function update(int $id, array $data): bool
+    {
+        $data = $this->filterFillable($data);
+        $set = implode(' = ?, ', array_keys($data)) . ' = ?';
+
+        $sql = "UPDATE {$this->table} SET {$set} WHERE {$this->primaryKey} = ?";
+        $stmt = $this->db->prepare($sql);
+
+        return $stmt->execute([...array_values($data), $id]);
+    }
+
+    public function delete(int $id): bool
+    {
+        $stmt = $this->db->prepare("DELETE FROM {$this->table} WHERE {$this->primaryKey} = ?");
+        return $stmt->execute([$id]);
+    }
+
+    public function query(string $sql, array $params = []): array
+    {
+        $stmt = $this->db->prepare($sql);
+        $stmt->execute($params);
+        return $stmt->fetchAll();
+    }
+
+    public function execute(string $sql, array $params = []): bool
+    {
+        $stmt = $this->db->prepare($sql);
+        return $stmt->execute($params);
+    }
+
+    protected function filterFillable(array $data): array
+    {
+        if (empty($this->fillable)) {
+            return $data;
+        }
+
+        return array_intersect_key($data, array_flip($this->fillable));
+    }
+}
@@ -0,0 +1,118 @@
+<?php
+
+namespace App\Core;
+
+class Router
+{
+    private array $routes = [];
+    private array $middlewareStack = [];
+
+    public function get(string $path, $handler): void
+    {
+        $this->addRoute('GET', $path, $handler);
+    }
+
+    public function post(string $path, $handler): void
+    {
+        $this->addRoute('POST', $path, $handler);
+    }
+
+    public function put(string $path, $handler): void
+    {
+        $this->addRoute('PUT', $path, $handler);
+    }
+
+    public function delete(string $path, $handler): void
+    {
+        $this->addRoute('DELETE', $path, $handler);
+    }
+
+    public function group(array $attributes, callable $callback): void
+    {
+        $previousMiddleware = $this->middlewareStack;
+
+        if (isset($attributes['middleware'])) {
+            $this->middlewareStack = array_merge(
+                $this->middlewareStack,
+                (array) $attributes['middleware']
+            );
+        }
+
+        $callback($this);
+
+        $this->middlewareStack = $previousMiddleware;
+    }
+
+    private function addRoute(string $method, string $path, $handler): void
+    {
+        $this->routes[] = [
+            'method' => $method,
+            'path' => $path,
+            'handler' => $handler,
+            'middleware' => $this->middlewareStack,
+        ];
+    }
+
+    public function dispatch(string $requestMethod, string $requestUri): void
+    {
+        $requestUri = parse_url($requestUri, PHP_URL_PATH);
+
+        foreach ($this->routes as $route) {
+            if ($route['method'] !== $requestMethod) {
+                continue;
+            }
+
+            $pattern = $this->convertToPattern($route['path']);
+
+            if (preg_match($pattern, $requestUri, $matches)) {
+                array_shift($matches); // Remove full match
+
+                // Execute middleware
+                foreach ($route['middleware'] as $middleware) {
+                    $this->executeMiddleware($middleware);
+                }
+
+                // Execute handler
+                $this->executeHandler($route['handler'], $matches);
+                return;
+            }
+        }
+
+        // 404 Not Found
+        http_response_code(404);
+        echo "404 - Page Not Found";
+    }
+
+    private function convertToPattern(string $path): string
+    {
+        $pattern = preg_replace('/\{([a-zA-Z0-9_]+)\}/', '([^/]+)', $path);
+        return '#^' . $pattern . '$#';
+    }
+
+    private function executeMiddleware(string $middleware): void
+    {
+        $parts = explode(':', $middleware);
+        $name = $parts[0];
+        $params = $parts[1] ?? null;
+
+        $middlewareClass = "App\\Middleware\\" . ucfirst($name) . "Middleware";
+
+        if (!class_exists($middlewareClass)) {
+            throw new \RuntimeException("Middleware not found: {$middlewareClass}");
+        }
+
+        $instance = new $middlewareClass();
+        $instance->handle($params);
+    }
+
+    private function executeHandler($handler, array $params): void
+    {
+        if (is_array($handler)) {
+            [$class, $method] = $handler;
+            $controller = new $class();
+            call_user_func_array([$controller, $method], $params);
+        } elseif (is_callable($handler)) {
+            call_user_func_array($handler, $params);
+        }
+    }
+}
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Middleware;
+
+class AuthMiddleware
+{
+    public function handle($params = null): void
+    {
+        if (!isset($_SESSION['user'])) {
+            header('Location: /login');
+            exit;
+        }
+    }
+}
@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Middleware;
+
+class RoleMiddleware
+{
+    public function handle($role = null): void
+    {
+        if (!isset($_SESSION['user'])) {
+            header('Location: /login');
+            exit;
+        }
+
+        if ($role && $_SESSION['user']['role'] !== $role) {
+            http_response_code(403);
+            die('403 - Forbidden');
+        }
+    }
+}
@@ -0,0 +1,96 @@
+<?php
+
+namespace App\Models;
+
+use App\Core\Model;
+
+class Band extends Model
+{
+    protected string $table = 'bands';
+
+    protected array $fillable = [
+        'user_id',
+        'name',
+        'slug',
+        'description',
+        'genre',
+        'location',
+        'postal_code',
+        'price_min',
+        'price_max',
+        'member_count',
+        'phone',
+        'website',
+        'facebook',
+        'instagram',
+        'youtube',
+        'profile_image',
+        'cover_image',
+        'is_approved',
+        'is_active',
+    ];
+
+    public function findBySlug(string $slug): ?array
+    {
+        return $this->first('slug', $slug);
+    }
+
+    public function search(array $filters): array
+    {
+        $sql = "SELECT * FROM {$this->table} WHERE is_approved = 1 AND is_active = 1";
+        $params = [];
+
+        if (!empty($filters['genre'])) {
+            $sql .= " AND genre = ?";
+            $params[] = $filters['genre'];
+        }
+
+        if (!empty($filters['location'])) {
+            $sql .= " AND (location LIKE ? OR postal_code LIKE ?)";
+            $params[] = "%{$filters['location']}%";
+            $params[] = "%{$filters['location']}%";
+        }
+
+        if (!empty($filters['price_max'])) {
+            $sql .= " AND price_min <= ?";
+            $params[] = $filters['price_max'];
+        }
+
+        if (!empty($filters['q'])) {
+            $sql .= " AND MATCH(name, description, genre) AGAINST (? IN NATURAL LANGUAGE MODE)";
+            $params[] = $filters['q'];
+        }
+
+        $sql .= " ORDER BY average_rating DESC, total_reviews DESC";
+
+        return $this->query($sql, $params);
+    }
+
+    public function incrementViews(int $id): bool
+    {
+        return $this->execute(
+            "UPDATE {$this->table} SET view_count = view_count + 1 WHERE id = ?",
+            [$id]
+        );
+    }
+
+    public function updateRating(int $bandId): void
+    {
+        $sql = "
+            UPDATE bands
+            SET average_rating = (
+                SELECT AVG(rating)
+                FROM reviews
+                WHERE band_id = ? AND is_approved = 1
+            ),
+            total_reviews = (
+                SELECT COUNT(*)
+                FROM reviews
+                WHERE band_id = ? AND is_approved = 1
+            )
+            WHERE id = ?
+        ";
+
+        $this->execute($sql, [$bandId, $bandId, $bandId]);
+    }
+}
@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Models;
+
+use App\Core\Model;
+
+class User extends Model
+{
+    protected string $table = 'users';
+
+    protected array $fillable = [
+        'email',
+        'password',
+        'name',
+        'role',
+        'verification_token',
+        'email_verified_at',
+        'is_active',
+    ];
+
+    public function findByEmail(string $email): ?array
+    {
+        return $this->first('email', $email);
+    }
+
+    public function verifyEmail(string $token): bool
+    {
+        $user = $this->first('verification_token', $token);
+
+        if (!$user) {
+            return false;
+        }
+
+        return $this->update($user['id'], [
+            'email_verified_at' => date('Y-m-d H:i:s'),
+            'verification_token' => null,
+        ]);
+    }
+
+    public static function hashPassword(string $password): string
+    {
+        return password_hash($password, PASSWORD_BCRYPT);
+    }
+
+    public static function verifyPassword(string $password, string $hash): bool
+    {
+        return password_verify($password, $hash);
+    }
+}
@@ -0,0 +1,126 @@
+<?php ob_start(); ?>
+
+<!-- Hero Section -->
+<section class="bg-gradient-to-br from-primary-500 via-accent-500 to-primary-600 text-white py-20">
+    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 text-center">
+        <h1 class="text-5xl md:text-6xl font-display font-bold mb-6 text-balance">
+            Finde die perfekte Band für dein Event
+        </h1>
+        <p class="text-xl md:text-2xl mb-8 text-primary-50 max-w-3xl mx-auto text-balance">
+            Professionelle Live-Bands in der ganzen Schweiz. Einfach buchen, perfekt performen.
+        </p>
+        <div class="flex flex-col sm:flex-row gap-4 justify-center">
+            <a href="/bands" class="btn bg-white text-primary-600 hover:bg-gray-100 text-lg px-8 py-3">
+                Bands entdecken
+            </a>
+            <a href="/register" class="btn bg-primary-700 text-white hover:bg-primary-800 text-lg px-8 py-3">
+                Als Band registrieren
+            </a>
+        </div>
+    </div>
+</section>
+
+<!-- Search Section -->
+<section class="py-16 bg-white">
+    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+        <div class="bg-gray-50 rounded-2xl shadow-lg p-8" x-data="searchBands">
+            <h2 class="text-3xl font-display font-bold text-center mb-8">Suche deine Band</h2>
+
+            <form @submit.prevent="search" class="grid grid-cols-1 md:grid-cols-4 gap-4">
+                <input
+                    type="text"
+                    x-model="query"
+                    placeholder="Band, Genre, Stil..."
+                    class="input-field"
+                >
+                <input
+                    type="text"
+                    x-model="filters.location"
+                    placeholder="Ort oder PLZ"
+                    class="input-field"
+                >
+                <select x-model="filters.genre" class="input-field">
+                    <option value="">Alle Genres</option>
+                    <option value="Rock">Rock</option>
+                    <option value="Pop">Pop</option>
+                    <option value="Jazz">Jazz</option>
+                    <option value="Blues">Blues</option>
+                    <option value="Funk">Funk</option>
+                    <option value="Cover">Cover</option>
+                </select>
+                <button type="submit" class="btn btn-primary">
+                    Suchen
+                </button>
+            </form>
+        </div>
+    </div>
+</section>
+
+<!-- Featured Bands -->
+<section class="py-16 bg-gray-50">
+    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+        <h2 class="text-4xl font-display font-bold text-center mb-12">Top bewertete Bands</h2>
+
+        <div class="grid grid-cols-1 md:grid-cols-3 gap-8">
+            <?php foreach ($featuredBands ?? [] as $band): ?>
+                <div class="card group hover:scale-105 transition-transform">
+                    <div class="aspect-video bg-gray-200 rounded-lg mb-4 overflow-hidden">
+                        <?php if ($band['cover_image']): ?>
+                            <img src="<?= $band['cover_image'] ?>" alt="<?= $band['name'] ?>" class="w-full h-full object-cover">
+                        <?php endif; ?>
+                    </div>
+                    <div class="flex items-start justify-between mb-2">
+                        <h3 class="text-xl font-bold text-gray-900"><?= htmlspecialchars($band['name']) ?></h3>
+                        <span class="badge badge-yellow"><?= htmlspecialchars($band['genre']) ?></span>
+                    </div>
+                    <p class="text-gray-600 mb-4 line-clamp-2"><?= htmlspecialchars($band['description']) ?></p>
+                    <div class="flex items-center justify-between">
+                        <div class="flex items-center">
+                            <span class="text-yellow-500 mr-1">⭐</span>
+                            <span class="font-semibold"><?= number_format($band['average_rating'], 1) ?></span>
+                            <span class="text-gray-500 text-sm ml-1">(<?= $band['total_reviews'] ?>)</span>
+                        </div>
+                        <a href="/bands/<?= $band['slug'] ?>" class="text-primary-600 hover:text-primary-700 font-medium">
+                            Details →
+                        </a>
+                    </div>
+                </div>
+            <?php endforeach; ?>
+        </div>
+    </div>
+</section>
+
+<!-- How it Works -->
+<section class="py-16 bg-white">
+    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+        <h2 class="text-4xl font-display font-bold text-center mb-12">So funktioniert's</h2>
+
+        <div class="grid grid-cols-1 md:grid-cols-3 gap-12">
+            <div class="text-center">
+                <div class="w-16 h-16 bg-primary-100 rounded-full flex items-center justify-center mx-auto mb-4">
+                    <span class="text-3xl">🔍</span>
+                </div>
+                <h3 class="text-xl font-bold mb-2">1. Suchen</h3>
+                <p class="text-gray-600">Finde die perfekte Band für dein Event mit unseren Suchfiltern.</p>
+            </div>
+            <div class="text-center">
+                <div class="w-16 h-16 bg-primary-100 rounded-full flex items-center justify-center mx-auto mb-4">
+                    <span class="text-3xl">📧</span>
+                </div>
+                <h3 class="text-xl font-bold mb-2">2. Anfragen</h3>
+                <p class="text-gray-600">Sende eine unverbindliche Anfrage mit deinen Event-Details.</p>
+            </div>
+            <div class="text-center">
+                <div class="w-16 h-16 bg-primary-100 rounded-full flex items-center justify-center mx-auto mb-4">
+                    <span class="text-3xl">🎉</span>
+                </div>
+                <h3 class="text-xl font-bold mb-2">3. Buchen</h3>
+                <p class="text-gray-600">Bestätige die Buchung und freue dich auf ein unvergessliches Event!</p>
+            </div>
+        </div>
+    </div>
+</section>
+
+<?php $content = ob_get_clean(); ?>
+<?php $title = 'Home'; ?>
+<?php include __DIR__ . '/layouts/app.php'; ?>
@@ -0,0 +1,104 @@
+<!DOCTYPE html>
+<html lang="de" class="h-full">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <title><?= $title ?? 'GetYourBand' ?> - Bandvermittlung Schweiz</title>
+
+    <!-- Fonts -->
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Poppins:wght@600;700;800&display=swap" rel="stylesheet">
+
+    <!-- Styles -->
+    <link rel="stylesheet" href="/dist/css/app.css">
+
+    <!-- Alpine.js -->
+    <script defer src="/dist/js/app.js"></script>
+</head>
+<body class="h-full">
+    <!-- Navigation -->
+    <nav class="bg-white shadow-sm sticky top-0 z-50">
+        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+            <div class="flex justify-between h-16">
+                <div class="flex items-center">
+                    <a href="/" class="text-2xl font-display font-bold text-primary-600">
+                        🎸 GetYourBand
+                    </a>
+                </div>
+
+                <div class="hidden md:flex items-center space-x-8">
+                    <a href="/" class="text-gray-700 hover:text-primary-600 transition">Home</a>
+                    <a href="/bands" class="text-gray-700 hover:text-primary-600 transition">Bands</a>
+
+                    <?php if (isset($_SESSION['user'])): ?>
+                        <a href="/profile" class="text-gray-700 hover:text-primary-600 transition">Profil</a>
+                        <form action="/logout" method="POST" class="inline">
+                            <?= csrf_field() ?>
+                            <button type="submit" class="btn btn-secondary">Logout</button>
+                        </form>
+                    <?php else: ?>
+                        <a href="/login" class="text-gray-700 hover:text-primary-600 transition">Login</a>
+                        <a href="/register" class="btn btn-primary">Registrieren</a>
+                    <?php endif; ?>
+                </div>
+            </div>
+        </div>
+    </nav>
+
+    <!-- Main Content -->
+    <main>
+        <?php if (isset($_SESSION['success'])): ?>
+            <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 mt-4">
+                <div class="bg-green-100 border border-green-400 text-green-700 px-4 py-3 rounded">
+                    <?= $_SESSION['success'] ?>
+                    <?php unset($_SESSION['success']); ?>
+                </div>
+            </div>
+        <?php endif; ?>
+
+        <?php if (isset($_SESSION['error'])): ?>
+            <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 mt-4">
+                <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded">
+                    <?= $_SESSION['error'] ?>
+                    <?php unset($_SESSION['error']); ?>
+                </div>
+            </div>
+        <?php endif; ?>
+
+        <?= $content ?? '' ?>
+    </main>
+
+    <!-- Footer -->
+    <footer class="bg-gray-900 text-white mt-20">
+        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-12">
+            <div class="grid grid-cols-1 md:grid-cols-3 gap-8">
+                <div>
+                    <h3 class="text-xl font-display font-bold text-primary-400 mb-4">GetYourBand</h3>
+                    <p class="text-gray-400">Die Plattform für professionelle Bandvermittlung in der Schweiz.</p>
+                </div>
+                <div>
+                    <h4 class="font-semibold mb-4">Links</h4>
+                    <ul class="space-y-2">
+                        <li><a href="/" class="text-gray-400 hover:text-white transition">Home</a></li>
+                        <li><a href="/bands" class="text-gray-400 hover:text-white transition">Bands</a></li>
+                        <li><a href="/register" class="text-gray-400 hover:text-white transition">Als Band registrieren</a></li>
+                    </ul>
+                </div>
+                <div>
+                    <h4 class="font-semibold mb-4">Rechtliches</h4>
+                    <ul class="space-y-2">
+                        <li><a href="/impressum" class="text-gray-400 hover:text-white transition">Impressum</a></li>
+                        <li><a href="/datenschutz" class="text-gray-400 hover:text-white transition">Datenschutz</a></li>
+                        <li><a href="/agb" class="text-gray-400 hover:text-white transition">AGB</a></li>
+                    </ul>
+                </div>
+            </div>
+            <div class="border-t border-gray-800 mt-8 pt-8 text-center text-gray-400">
+                <p>&copy; <?= date('Y') ?> GetYourBand. Alle Rechte vorbehalten.</p>
+            </div>
+        </div>
+    </footer>
+</body>
+</html>
@@ -0,0 +1,100 @@
+<?php
+
+/**
+ * Helper functions available globally
+ */
+
+if (!function_exists('env')) {
+    function env(string $key, $default = null)
+    {
+        return $_ENV[$key] ?? $default;
+    }
+}
+
+if (!function_exists('asset')) {
+    function asset(string $path): string
+    {
+        return '/' . ltrim($path, '/');
+    }
+}
+
+if (!function_exists('url')) {
+    function url(string $path = ''): string
+    {
+        $baseUrl = env('APP_URL', 'http://localhost');
+        return rtrim($baseUrl, '/') . '/' . ltrim($path, '/');
+    }
+}
+
+if (!function_exists('redirect')) {
+    function redirect(string $path): void
+    {
+        header("Location: {$path}");
+        exit;
+    }
+}
+
+if (!function_exists('old')) {
+    function old(string $key, $default = '')
+    {
+        return $_SESSION['old'][$key] ?? $default;
+    }
+}
+
+if (!function_exists('error')) {
+    function error(string $key): ?string
+    {
+        return $_SESSION['errors'][$key][0] ?? null;
+    }
+}
+
+if (!function_exists('csrf_token')) {
+    function csrf_token(): string
+    {
+        if (!isset($_SESSION['csrf_token'])) {
+            $_SESSION['csrf_token'] = bin2hex(random_bytes(32));
+        }
+        return $_SESSION['csrf_token'];
+    }
+}
+
+if (!function_exists('csrf_field')) {
+    function csrf_field(): string
+    {
+        return '<input type="hidden" name="csrf_token" value="' . csrf_token() . '">';
+    }
+}
+
+if (!function_exists('dd')) {
+    function dd(...$vars): void
+    {
+        foreach ($vars as $var) {
+            var_dump($var);
+        }
+        die();
+    }
+}
+
+if (!function_exists('formatPrice')) {
+    function formatPrice($price): string
+    {
+        return 'CHF ' . number_format($price, 2, '.', '\'');
+    }
+}
+
+if (!function_exists('formatDate')) {
+    function formatDate($date): string
+    {
+        return date('d.m.Y', strtotime($date));
+    }
+}
+
+if (!function_exists('generateSlug')) {
+    function generateSlug(string $text): string
+    {
+        $text = mb_strtolower($text, 'UTF-8');
+        $text = preg_replace('/[^a-z0-9\s-]/', '', $text);
+        $text = preg_replace('/[\s-]+/', '-', $text);
+        return trim($text, '-');
+    }
+}