weitere Bearibeitung

app/Support/helpers.php

@@ -3,6 +3,32 @@
 use App\Core\Csrf;
 use App\Core\Session;
 
+function base_path(): string
+{
+    foreach ([
+        $_SERVER['KAFFEEKASSE_PROXY_PREFIX'] ?? null,
+        $_SERVER['HTTP_X_FORWARDED_PREFIX'] ?? null,
+        $_ENV['APP_BASE_PATH'] ?? null,
+    ] as $prefix) {
+        $prefix = trim((string) $prefix);
+
+        if ($prefix !== '') {
+            return normalize_base_path($prefix);
+        }
+    }
+
+    return '';
+}
+
+function normalize_base_path(string $prefix): string
+{
+    $path = parse_url($prefix, PHP_URL_PATH);
+    $path = is_string($path) ? $path : $prefix;
+    $path = '/' . trim($path, '/');
+
+    return $path === '/' ? '' : $path;
+}
+
 function e(?string $value): string
 {
     return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
@@ -12,12 +38,120 @@ function current_path(): string
 {
     $uri = parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH);
 
-    return is_string($uri) ? $uri : '/';
+    $path = is_string($uri) && $uri !== '' ? $uri : '/';
+    $basePath = base_path();
+
+    if ($basePath !== '' && ($path === $basePath || str_starts_with($path, $basePath . '/'))) {
+        $path = substr($path, strlen($basePath)) ?: '/';
+    }
+
+    $path = '/' . ltrim($path, '/');
+
+    return $path === '/' ? '/' : rtrim($path, '/');
+}
+
+function url(string $path = '/', array $query = []): string
+{
+    $path = trim($path);
+
+    if ($path === '') {
+        $path = '/';
+    }
+
+    if (preg_match('#^(?:[a-z][a-z0-9+.-]*:)?//#i', $path) || str_starts_with($path, '#')) {
+        return append_query($path, $query);
+    }
+
+    $fragment = '';
+    $hashPosition = strpos($path, '#');
+    if ($hashPosition !== false) {
+        $fragment = substr($path, $hashPosition);
+        $path = substr($path, 0, $hashPosition);
+    }
+
+    $existingQuery = '';
+    $queryPosition = strpos($path, '?');
+    if ($queryPosition !== false) {
+        $existingQuery = substr($path, $queryPosition + 1);
+        $path = substr($path, 0, $queryPosition);
+    }
+
+    $targetPath = '/' . ltrim($path, '/');
+    $targetPath = $targetPath === '//' ? '/' : $targetPath;
+    $targetPath = $targetPath === '/' ? '/' : rtrim($targetPath, '/');
+    $queryString = build_query_string($existingQuery, $query);
+    $basePath = base_path();
+
+    if ($basePath !== '') {
+        return $basePath . ($targetPath === '/' ? '/' : $targetPath) . $queryString . $fragment;
+    }
+
+    return relative_url($targetPath) . $queryString . $fragment;
+}
+
+function append_query(string $url, array $query): string
+{
+    if ($query === []) {
+        return $url;
+    }
+
+    return $url . (str_contains($url, '?') ? '&' : '?') . http_build_query($query, '', '&', PHP_QUERY_RFC3986);
+}
+
+function build_query_string(string $existingQuery, array $query): string
+{
+    $parts = [];
+
+    if ($existingQuery !== '') {
+        $parts[] = $existingQuery;
+    }
+
+    if ($query !== []) {
+        $parts[] = http_build_query($query, '', '&', PHP_QUERY_RFC3986);
+    }
+
+    return $parts === [] ? '' : '?' . implode('&', $parts);
+}
+
+function relative_url(string $targetPath): string
+{
+    $currentPath = current_path();
+    $fromSegments = path_segments($currentPath);
+
+    if (!str_ends_with($currentPath, '/')) {
+        array_pop($fromSegments);
+    }
+
+    $toSegments = path_segments($targetPath);
+    $common = 0;
+    $maxCommon = min(count($fromSegments), count($toSegments));
+
+    while ($common < $maxCommon && $fromSegments[$common] === $toSegments[$common]) {
+        $common++;
+    }
+
+    if ($toSegments !== [] && $common === count($toSegments) && $common === count($fromSegments)) {
+        return '../' . end($toSegments);
+    }
+
+    $relativeSegments = array_merge(
+        array_fill(0, count($fromSegments) - $common, '..'),
+        array_slice($toSegments, $common)
+    );
+
+    return $relativeSegments === [] ? '.' : implode('/', $relativeSegments);
+}
+
+function path_segments(string $path): array
+{
+    $trimmed = trim($path, '/');
+
+    return $trimmed === '' ? [] : explode('/', $trimmed);
 }
 
 function asset_url(string $path): string
 {
-    return '/assets/' . ltrim($path, '/');
+    return url('/assets/' . ltrim($path, '/'));
 }
 
 function old(string $key, mixed $default = ''): mixed
@@ -52,6 +186,11 @@ function flash(Session $session, string $key, mixed $default = null): mixed
 }
 
 function tenant_url(string $tenantSlug, string $path = ''): string
+{
+    return url(tenant_path($tenantSlug, $path));
+}
+
+function tenant_path(string $tenantSlug, string $path = ''): string
 {
     $suffix = $path === '' ? '' : '/' . ltrim($path, '/');