<?php
declare(strict_types=1);

/*
|--------------------------------------------------------------------------
| Apache-style static index generator / control panel
| Version: v18
|--------------------------------------------------------------------------
| What it does
| - Runs from /public_html/apache-indexer.php
| - Lets you choose /public_html or one immediate subfolder
| - Crawls the selected subtree recursively
| - Builds a ZIP containing self-contained index.html files
| - Immediately starts the ZIP download for your browser
| - ZIP root starts with the selected folder name, e.g. 8k.art/index.html
| - Generated page headings treat the selected folder as the deployed web root:
|     /                for the selected root
|     /beta/           for a child folder
|     /docs/guide/     for deeper folders
| - Skips excluded/system folders
| - Can remove legacy tool-generated indexes or all index.html files
|
| Important behavior
| - ZIP path root and displayed web path are intentionally different
| - If you select /8k.art:
|     ZIP contains: 8k.art/index.html, 8k.art/beta/index.html
|     Generated pages display: Index of /, Index of /beta/
|
| Safety
| - All actions are scope-locked to the selected subtree only
| - "Remove generated" only deletes files containing INDEX_MARKER
| - "Remove ALL" deletes every index.html only inside the selected subtree
|--------------------------------------------------------------------------
*/

error_reporting(E_ALL);
ini_set('display_errors', '1');

$APP_NAME = 'Apache Indexer';
$APP_VERSION = 'v18';
$APP_DATE = '2026-03-20';
$APP_FILE = basename(__FILE__);
$APP_BUILD = $APP_VERSION . ' (' . $APP_DATE . ')';

define('INDEXER_VERSION', $APP_VERSION);
define('INDEX_MARKER', 'INDEXER_GENERATED_V15_SCOPELOCK');

$BASE_PATH = realpath(__DIR__);
if ($BASE_PATH === false) {
    die('Unable to resolve base path.');
}


$EXCLUDED_DIRS = [
    '.well-known',
    'cgi-bin',
    '.git',
    '.svn',
    '.hg',
    '__MACOSX',
    'node_modules',
    'vendor',
];

$EXCLUDED_FILES = [
    '.DS_Store',
    'Thumbs.db',
];

function h(string $value): string
{
    return htmlspecialchars($value, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
}

function app_meta(): array
{
    global $APP_NAME, $APP_VERSION, $APP_DATE, $APP_FILE, $APP_BUILD;

    return [
        'name' => $APP_NAME,
        'version' => $APP_VERSION,
        'date' => $APP_DATE,
        'file' => $APP_FILE,
        'build' => $APP_BUILD,
    ];
}

function app_footer_text(string $extra = ''): string
{
    $meta = app_meta();
    $base = $meta['name'] . ' ' . $meta['version'] . ' · ' . $meta['date'] . ' · ' . $meta['file'];
    return $extra !== '' ? ($base . ' · ' . $extra) : $base;
}

function timestamp_label(): string
{
    return date('Y-m-d_hisA') . '_' . INDEXER_VERSION;
}

function normalize_path(string $path): string
{
    return rtrim(str_replace('\\', '/', $path), '/');
}

function is_path_within_base(string $base, string $candidate): bool
{
    $baseNorm = normalize_path($base);
    $candNorm = normalize_path($candidate);

    return $candNorm === $baseNorm || strpos($candNorm . '/', $baseNorm . '/') === 0;
}

function is_excluded_dir_name(string $name): bool
{
    global $EXCLUDED_DIRS;

    if ($name === '.' || $name === '..') {
        return true;
    }

    if (strpos($name, '.') === 0) {
        return true;
    }

    return in_array($name, $EXCLUDED_DIRS, true);
}

function is_excluded_file_name(string $name): bool
{
    global $EXCLUDED_FILES;

    if ($name === '.' || $name === '..') {
        return true;
    }

    if (strpos($name, '.') === 0) {
        return true;
    }

    return in_array($name, $EXCLUDED_FILES, true);
}

function ensure_scope_locked_path(string $candidatePath): string
{
    global $BASE_PATH;

    $real = realpath($candidatePath);
    if ($real === false) {
        throw new RuntimeException('Selected path does not exist.');
    }

    if (!is_path_within_base($BASE_PATH, $real)) {
        throw new RuntimeException('Selected path is outside /public_html scope.');
    }

    return $real;
}

function get_folder_choices(string $basePath): array
{
    $choices = [
        [
            'label' => '/',
            'path'  => $basePath,
        ]
    ];

    $items = @scandir($basePath);
    if ($items === false) {
        return $choices;
    }

    foreach ($items as $item) {
        if (is_excluded_dir_name($item)) {
            continue;
        }

        $full = $basePath . DIRECTORY_SEPARATOR . $item;
        if (is_dir($full)) {
            $choices[] = [
                'label' => '/' . $item,
                'path'  => realpath($full) ?: $full,
            ];
        }
    }

    usort($choices, function (array $a, array $b): int {
        return strcasecmp($a['label'], $b['label']);
    });

    return $choices;
}

function relative_from_base(string $absolutePath): string
{
    global $BASE_PATH;

    $base = normalize_path($BASE_PATH);
    $abs  = normalize_path($absolutePath);

    if ($abs === $base) {
        return '/';
    }

    $rel = substr($abs, strlen($base));
    if ($rel === false || $rel === '') {
        return '/';
    }

    return $rel[0] === '/' ? $rel : '/' . $rel;
}

function site_name_for_root(string $selectedRoot): string
{
    $relative = relative_from_base($selectedRoot);
    if ($relative === '/') {
        return basename($selectedRoot);
    }

    return ltrim($relative, '/');
}

function web_path_for_dir(string $dir, string $selectedRoot): string
{
    $root = normalize_path($selectedRoot);
    $dirNorm = normalize_path($dir);

    if ($dirNorm === $root) {
        return '/';
    }

    $suffix = substr($dirNorm, strlen($root));
    $suffix = str_replace('\\', '/', (string)$suffix);
    $suffix = trim($suffix, '/');

    return '/' . $suffix . '/';
}

function human_size(?int $bytes, bool $isDir = false): string
{
    if ($isDir) {
        return '-';
    }

    if ($bytes === null) {
        return '-';
    }

    $units = ['B', 'K', 'M', 'G', 'T'];
    $size = (float)$bytes;
    $i = 0;

    while ($size >= 1024 && $i < count($units) - 1) {
        $size /= 1024;
        $i++;
    }

    if ($i === 0) {
        return (string)((int)$size);
    }

    return rtrim(rtrim(number_format($size, 1, '.', ''), '0'), '.') . $units[$i];
}

function description_for_file(string $name): string
{
    $ext = strtolower(pathinfo($name, PATHINFO_EXTENSION));

    if ($ext === 'html' || $ext === 'htm') {
        return 'HTML document';
    }
    if ($ext === 'txt') {
        return 'Text file';
    }
    if (in_array($ext, ['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg'], true)) {
        return 'Image';
    }
    if ($ext === 'pdf') {
        return 'PDF document';
    }
    if ($ext === 'zip') {
        return 'ZIP archive';
    }

    return 'File';
}

function scan_directory_for_listing(string $dir): array
{
    $items = @scandir($dir);
    if ($items === false) {
        return [];
    }

    $rows = [];

    foreach ($items as $name) {
        if ($name === '.' || $name === '..') {
            continue;
        }

        $full = $dir . DIRECTORY_SEPARATOR . $name;

        if (is_dir($full)) {
            if (is_excluded_dir_name($name)) {
                continue;
            }

            $rows[] = [
                'type'        => 'dir',
                'name'        => $name,
                'href'        => rawurlencode($name) . '/',
                'mtime'       => @filemtime($full) ?: 0,
                'size'        => null,
                'description' => 'Directory',
            ];
            continue;
        }

        if (is_excluded_file_name($name)) {
            continue;
        }

        $rows[] = [
            'type'        => 'file',
            'name'        => $name,
            'href'        => rawurlencode($name),
            'mtime'       => @filemtime($full) ?: 0,
            'size'        => @filesize($full) ?: 0,
            'description' => description_for_file($name),
        ];
    }

    return $rows;
}

function apache_sort_rows(array $rows, string $column, string $order): array
{
    usort($rows, function (array $a, array $b) use ($column, $order): int {
        $result = 0;

        if ($column === 'N') {
            $aWeight = $a['type'] === 'file' ? 0 : 1;
            $bWeight = $b['type'] === 'file' ? 0 : 1;

            if ($aWeight !== $bWeight) {
                $result = $aWeight <=> $bWeight;
            } else {
                $result = strcasecmp($a['name'], $b['name']);
            }
        } elseif ($column === 'M') {
            $result = ($a['mtime'] <=> $b['mtime']);
            if ($result === 0) {
                $aWeight = $a['type'] === 'file' ? 0 : 1;
                $bWeight = $b['type'] === 'file' ? 0 : 1;

                if ($aWeight !== $bWeight) {
                    $result = $aWeight <=> $bWeight;
                } else {
                    $result = strcasecmp($a['name'], $b['name']);
                }
            }
        } elseif ($column === 'S') {
            $aSize = $a['type'] === 'dir' ? -1 : (int)$a['size'];
            $bSize = $b['type'] === 'dir' ? -1 : (int)$b['size'];
            $result = $aSize <=> $bSize;

            if ($result === 0) {
                $aWeight = $a['type'] === 'file' ? 0 : 1;
                $bWeight = $b['type'] === 'file' ? 0 : 1;

                if ($aWeight !== $bWeight) {
                    $result = $aWeight <=> $bWeight;
                } else {
                    $result = strcasecmp($a['name'], $b['name']);
                }
            }
        } else {
            $aWeight = $a['type'] === 'file' ? 0 : 1;
            $bWeight = $b['type'] === 'file' ? 0 : 1;

            if ($aWeight !== $bWeight) {
                $result = $aWeight <=> $bWeight;
            } else {
                $result = strcasecmp($a['name'], $b['name']);
            }
        }

        return $order === 'D' ? -$result : $result;
    });

    return $rows;
}

function generate_index_html(string $dir, string $selectedRoot, string $generationStamp): string
{
    $rows = scan_directory_for_listing($dir);
    $webPath = web_path_for_dir($dir, $selectedRoot);

    $rows = apache_sort_rows($rows, 'N', 'A');

    $parentRow = '';
    if (normalize_path($dir) !== normalize_path($selectedRoot)) {
        $parentRow = <<<HTML
<tr class="parent-row" data-type="parent" data-name="" data-mtime="0" data-size="-1" data-typeweight="-1">
  <td class="col-name"><a href="../">Parent Directory</a></td>
  <td class="col-modified">-</td>
  <td class="col-size">-</td>
  <td class="col-description"></td>
</tr>
HTML;
    }

    $htmlRows = '';
    foreach ($rows as $row) {
        $nameDisplay = $row['type'] === 'dir' ? $row['name'] . '/' : $row['name'];
        $mtimeDisplay = $row['mtime'] > 0 ? date('Y-m-d H:i', $row['mtime']) : '-';
        $sizeDisplay = human_size($row['size'], $row['type'] === 'dir');
        $typeWeight = $row['type'] === 'file' ? '0' : '1';

        $htmlRows .= '<tr'
            . ' data-type="' . h($row['type']) . '"'
            . ' data-typeweight="' . h($typeWeight) . '"'
            . ' data-name="' . h(strtolower($row['name'])) . '"'
            . ' data-mtime="' . h((string)$row['mtime']) . '"'
            . ' data-size="' . h((string)($row['type'] === 'dir' ? -1 : (int)$row['size'])) . '">'
            . '<td class="col-name"><a href="' . h($row['href']) . '">' . h($nameDisplay) . '</a></td>'
            . '<td class="col-modified">' . h($mtimeDisplay) . '</td>'
            . '<td class="col-size">' . h($sizeDisplay) . '</td>'
            . '<td class="col-description">' . h($row['description']) . '</td>'
            . "</tr>\n";
    }

    $footerText = app_footer_text('Generated ' . $generationStamp);

    return <<<HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Index of {$webPath}</title>
<style>
body{
    margin:18px;
    background:#fff;
    color:#000;
    font-family:Tahoma,Arial,sans-serif;
    font-size:14px;
    line-height:1.35;
}
h1{
    margin:0 0 12px 0;
    font-size:28px;
    font-weight:700;
}
a{
    color:#00f;
    text-decoration:underline;
}
a:hover{
    text-decoration:underline;
}
table{
    width:100%;
    border-collapse:collapse;
    table-layout:auto;
    font-size:14px;
}
th,td{
    padding:4px 8px 4px 0;
    vertical-align:top;
    white-space:nowrap;
    text-align:left;
}
th{
    font-weight:700;
}
th a{
    color:#00f;
    text-decoration:underline;
    cursor:pointer;
}
.col-name{
    width:34%;
}
.col-modified{
    width:20%;
}
.col-size{
    width:11%;
    text-align:right;
    padding-right:14px;
}
.col-description{
    width:35%;
}
hr{
    border:none;
    border-top:1px solid #999;
    margin:8px 0;
}
.footer{
    margin-top:12px;
    font-size:12px;
    color:#444;
}
.parent-row td{
    padding-top:6px;
}
</style>
</head>
<body>
<!-- INDEXER_GENERATED_V15_SCOPELOCK -->
<h1>Index of {$webPath}</h1>
<table id="listingTable">
  <thead>
    <tr>
      <th class="col-name"><a href="?C=N&O=A" data-sort="N">Name</a></th>
      <th class="col-modified"><a href="?C=M&O=A" data-sort="M">Last modified</a></th>
      <th class="col-size"><a href="?C=S&O=A" data-sort="S">Size</a></th>
      <th class="col-description">Description</th>
    </tr>
  </thead>
  <tbody>
    {$parentRow}
    {$htmlRows}
  </tbody>
</table>
<hr>
<div class="footer">{$footerText}</div>

<script>
(function(){
    const params = new URLSearchParams(window.location.search);
    let C = (params.get('C') || 'N').toUpperCase();
    let O = (params.get('O') || 'A').toUpperCase();

    if (!['N','M','S'].includes(C)) C = 'N';
    if (!['A','D'].includes(O)) O = 'A';

    const tbody = document.querySelector('#listingTable tbody');
    const allRows = Array.from(tbody.querySelectorAll('tr'));
    const parent = allRows.find(r => r.classList.contains('parent-row')) || null;
    const rows = allRows.filter(r => !r.classList.contains('parent-row'));

    rows.sort((a, b) => {
        const aType = a.dataset.type || '';
        const bType = b.dataset.type || '';

        if (C === 'N') {
            const aWeight = (aType === 'file') ? 0 : 1;
            const bWeight = (bType === 'file') ? 0 : 1;
            if (aWeight !== bWeight) return aWeight - bWeight;

            const an = a.dataset.name || '';
            const bn = b.dataset.name || '';
            return an.localeCompare(bn, undefined, {numeric:true, sensitivity:'base'});
        }

        if (C === 'M') {
            const am = parseInt(a.dataset.mtime || '0', 10);
            const bm = parseInt(b.dataset.mtime || '0', 10);
            if (am !== bm) return am - bm;

            const aWeight = (aType === 'file') ? 0 : 1;
            const bWeight = (bType === 'file') ? 0 : 1;
            if (aWeight !== bWeight) return aWeight - bWeight;

            const an = a.dataset.name || '';
            const bn = b.dataset.name || '';
            return an.localeCompare(bn, undefined, {numeric:true, sensitivity:'base'});
        }

        if (C === 'S') {
            const as = parseInt(a.dataset.size || '-1', 10);
            const bs = parseInt(b.dataset.size || '-1', 10);
            if (as !== bs) return as - bs;

            const aWeight = (aType === 'file') ? 0 : 1;
            const bWeight = (bType === 'file') ? 0 : 1;
            if (aWeight !== bWeight) return aWeight - bWeight;

            const an = a.dataset.name || '';
            const bn = b.dataset.name || '';
            return an.localeCompare(bn, undefined, {numeric:true, sensitivity:'base'});
        }

        return 0;
    });

    if (O === 'D') {
        rows.reverse();
    }

    tbody.innerHTML = '';

    if (parent) {
        tbody.appendChild(parent);
    }

    rows.forEach(r => tbody.appendChild(r));

    document.querySelectorAll('a[data-sort]').forEach(link => {
        const col = link.dataset.sort;
        let nextOrder = 'A';

        if (C === col && O === 'A') {
            nextOrder = 'D';
        }

        link.href = '?C=' + col + '&O=' + nextOrder;
    });
})();
</script>
</body>
</html>
HTML;
}

function recursive_directories(string $root): array
{
    $dirs = [$root];

    $items = @scandir($root);
    if ($items === false) {
        return $dirs;
    }

    foreach ($items as $name) {
        if ($name === '.' || $name === '..') {
            continue;
        }

        if (is_excluded_dir_name($name)) {
            continue;
        }

        $full = $root . DIRECTORY_SEPARATOR . $name;
        if (is_dir($full)) {
            $dirs = array_merge($dirs, recursive_directories($full));
        }
    }

    return $dirs;
}

function create_temp_zip_path(): string
{
    $temp = tempnam(sys_get_temp_dir(), 'apache-indexer-');
    if ($temp === false) {
        throw new RuntimeException('Unable to create temporary ZIP file in the server temp directory.');
    }

    $zipPath = $temp . '.zip';
    if (!@rename($temp, $zipPath)) {
        @unlink($temp);
        throw new RuntimeException('Unable to prepare temporary ZIP file in the server temp directory.');
    }

    register_shutdown_function(static function () use ($zipPath): void {
        if (is_file($zipPath)) {
            @unlink($zipPath);
        }
    });

    return $zipPath;
}

function zip_internal_dir_from_absolute(string $absoluteDir, string $selectedRoot): string
{
    $root = normalize_path($selectedRoot);
    $dir = normalize_path($absoluteDir);
    $siteFolder = basename($root);

    if ($dir === $root) {
        return $siteFolder;
    }

    $rel = substr($dir, strlen($root));
    $rel = ltrim((string)$rel, '/');

    return $siteFolder . '/' . $rel;
}

function build_zip_from_tree(string $selectedRoot): array
{
    if (!class_exists('ZipArchive')) {
        throw new RuntimeException('ZipArchive is not available on this server.');
    }

    $stamp = timestamp_label();
    $zipPath = create_temp_zip_path();
    $downloadName = 'indexes_' . $stamp . '.zip';

    $zip = new ZipArchive();
    if ($zip->open($zipPath, ZipArchive::CREATE | ZipArchive::OVERWRITE) !== true) {
        @unlink($zipPath);
        throw new RuntimeException('Unable to create ZIP archive.');
    }

    $generatedCount = 0;
    $skippedExisting = 0;
    $directories = recursive_directories($selectedRoot);

    foreach ($directories as $dir) {
        $existingIndex = $dir . DIRECTORY_SEPARATOR . 'index.html';
        if (is_file($existingIndex)) {
            $skippedExisting++;
            continue;
        }

        $html = generate_index_html($dir, $selectedRoot, $stamp);
        $internalDir = zip_internal_dir_from_absolute($dir, $selectedRoot);
        $internalPath = $internalDir . '/index.html';

        $zip->addFromString($internalPath, $html);
        $generatedCount++;
    }

    $zip->close();

    return [
        'zip_path' => $zipPath,
        'download_name' => $downloadName,
        'generated_count' => $generatedCount,
        'skipped_existing' => $skippedExisting,
        'stamp' => $stamp,
    ];
}

function stream_zip_download_and_exit(array $resultMeta): void
{
    $zipPath = $resultMeta['zip_path'] ?? '';
    $downloadName = $resultMeta['download_name'] ?? 'indexes.zip';

    if (!is_string($zipPath) || $zipPath === '' || !is_file($zipPath)) {
        throw new RuntimeException('Temporary ZIP file could not be found for download.');
    }

    if (ob_get_level() > 0) {
        while (ob_get_level() > 0) {
            ob_end_clean();
        }
    }

    header('Content-Description: File Transfer');
    header('Content-Type: application/zip');
    header('Content-Disposition: attachment; filename="' . str_replace('"', '', $downloadName) . '"');
    header('Content-Length: ' . (string)filesize($zipPath));
    header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
    header('Pragma: public');
    header('Expires: 0');

    $fp = fopen($zipPath, 'rb');
    if ($fp === false) {
        @unlink($zipPath);
        throw new RuntimeException('Unable to open temporary ZIP for download.');
    }

    while (!feof($fp)) {
        echo fread($fp, 1048576);
        flush();
    }

    fclose($fp);
    @unlink($zipPath);
    exit;
}

function write_generated_indexes_to_tree(string $selectedRoot): int
{
    $count = 0;
    $stamp = timestamp_label();

    foreach (recursive_directories($selectedRoot) as $dir) {
        $indexPath = $dir . DIRECTORY_SEPARATOR . 'index.html';
        if (is_file($indexPath)) {
            continue;
        }

        $html = generate_index_html($dir, $selectedRoot, $stamp);
        file_put_contents($indexPath, $html);
        $count++;
    }

    return $count;
}

function remove_indexes(string $selectedRoot, bool $forceAll = false): int
{
    $count = 0;

    foreach (recursive_directories($selectedRoot) as $dir) {
        $indexPath = $dir . DIRECTORY_SEPARATOR . 'index.html';
        if (!is_file($indexPath)) {
            continue;
        }

        if ($forceAll) {
            @unlink($indexPath);
            if (!is_file($indexPath)) {
                $count++;
            }
            continue;
        }

        $content = @file_get_contents($indexPath);
        if ($content !== false && strpos($content, INDEX_MARKER) !== false) {
            @unlink($indexPath);
            if (!is_file($indexPath)) {
                $count++;
            }
        }
    }

    return $count;
}

function selected_path_from_request(array $choices): string
{
    $allowed = [];
    foreach ($choices as $choice) {
        $allowed[] = normalize_path($choice['path']);
    }

    $requested = $_POST['folder'] ?? $choices[0]['path'];
    $selected = ensure_scope_locked_path((string)$requested);

    if (!in_array(normalize_path($selected), $allowed, true)) {
        throw new RuntimeException('Selected folder is not an allowed choice.');
    }

    return $selected;
}

$message = '';
$messageType = 'info';
$resultMeta = [];

$choices = get_folder_choices($BASE_PATH);
$selectedPath = $choices[0]['path'] ?? $BASE_PATH;

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    try {
        $selectedPath = selected_path_from_request($choices);

        $allowedActions = [
            'generate_zip',
            'remove_generated',
            'remove_all'
        ];

        $action = $_POST['action'] ?? 'generate_zip';

        if ($action === '' || !in_array($action, $allowedActions, true)) {
            $action = 'generate_zip';
        }

        switch ($action) {
            case 'generate_zip':
                $resultMeta = build_zip_from_tree($selectedPath);
                stream_zip_download_and_exit($resultMeta);
                break;


            case 'remove_generated':
                $removed = remove_indexes($selectedPath, false);
                $message = '[' . timestamp_label() . '] Removed '
                    . $removed . ' generated index.html files from the selected subtree.';
                $messageType = 'success';
                break;

            case 'remove_all':
                $removed = remove_indexes($selectedPath, true);
                $message = '[' . timestamp_label() . '] Removed '
                    . $removed . ' total index.html files from the selected subtree.';
                $messageType = 'warning';
                break;
        }
    } catch (Throwable $e) {
        $message = $e->getMessage();
        $messageType = 'error';
    }
}

$selectedRelative = relative_from_base($selectedPath);
$selectedAbsolute = $selectedPath;
$selectedSiteName = site_name_for_root($selectedPath);

$choicesForJs = [];
foreach ($choices as $choice) {
    $path = $choice['path'];
    $choicesForJs[] = [
        'path' => $path,
        'label' => $choice['label'],
        'relative' => relative_from_base($path),
        'siteName' => site_name_for_root($path),
    ];
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title><?php echo h(app_meta()['name']); ?> Control Panel <?php echo h(INDEXER_VERSION); ?></title>
<style>
:root{
    --bg:#f5f7fb;
    --panel:#ffffff;
    --text:#172033;
    --muted:#5c6784;
    --line:#d8dfef;
    --accent:#2d5bff;
    --shadow:0 10px 30px rgba(19,35,75,.08);
}
*{box-sizing:border-box}
body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
.wrap{
    max-width:1080px;
    margin:32px auto;
    padding:0 20px 40px;
}
.hero{
    background:linear-gradient(180deg,#ffffff 0%,#f8faff 100%);
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow);
    padding:24px;
    margin-bottom:20px;
}
.hero h1{
    margin:0 0 8px;
    font-size:32px;
    line-height:1.1;
}
.hero p{
    margin:0;
    color:var(--muted);
    font-size:15px;
}
.grid{
    display:grid;
    grid-template-columns:1.2fr .8fr;
    gap:20px;
}
.card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow);
    padding:22px;
}
.card h2{
    margin:0 0 14px;
    font-size:20px;
}
.label{
    display:block;
    margin:0 0 8px;
    font-weight:700;
}
select{
    width:100%;
    padding:12px 14px;
    border:1px solid #bfc9e4;
    border-radius:12px;
    font-size:15px;
    background:#fff;
}
.target-box{
    margin-top:16px;
    padding:14px 16px;
    border-radius:12px;
    background:#f8faff;
    border:1px solid var(--line);
}
.target-box code{
    display:block;
    margin-top:6px;
    word-break:break-all;
    font-size:13px;
    color:#24314d;
}
.target-red{
    margin-top:14px;
    border:1px solid #f0b4ae;
    background:#fff5f4;
    color:#7a271a;
    border-radius:12px;
    padding:14px 16px;
    font-size:14px;
}
.actions{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:12px;
    margin-top:18px;
}
.actions .full{
    grid-column:1 / -1;
}
button{
    appearance:none;
    border:none;
    border-radius:12px;
    padding:13px 16px;
    font-size:15px;
    font-weight:700;
    cursor:pointer;
}
.btn-primary{background:#2d5bff;color:#fff}
.btn-green{background:#dff5e7;color:#0c5b2f}
.btn-red{background:#ffe1dd;color:#8d1d11}
.btn-yellow{background:#fff1c7;color:#7b5200}
.message{
    margin:0 0 20px;
    padding:14px 16px;
    border-radius:14px;
    font-size:14px;
    border:1px solid var(--line);
    background:#fff;
}
.message.success{
    border-color:#b7e2c6;
    background:#effaf3;
    color:#155c34;
}
.message.warning{
    border-color:#f2d58d;
    background:#fff8df;
    color:#7b5200;
}
.message.error{
    border-color:#f0b4ae;
    background:#fff2f0;
    color:#8d1d11;
}
.kv{
    display:grid;
    grid-template-columns:160px 1fr;
    gap:8px 12px;
    font-size:14px;
}
.kv div:nth-child(odd){
    color:var(--muted);
    font-weight:700;
}
.small{
    color:var(--muted);
    font-size:13px;
}
ul.clean{
    margin:10px 0 0 18px;
    padding:0;
}
.download{
    margin-top:14px;
    padding:14px 16px;
    border-radius:12px;
    background:#eef4ff;
    border:1px solid #cad7fb;
}
.download a{
    color:#1246d6;
    font-weight:700;
    text-decoration:none;
}
.download a:hover{
    text-decoration:underline;
}
@media (max-width: 860px){
    .grid{grid-template-columns:1fr}
    .actions{grid-template-columns:1fr}
}
</style>
</head>
<body>
<div class="wrap">
    <div class="hero">
        <h1><?php echo h(app_meta()['name']); ?> Control Panel</h1>
        <p>Generate a ZIP download of self-contained Apache-style <code>index.html</code> files with no external assets, no support folders, and no forgotten ZIP files stored in your site tree.</p>
    </div>

    <?php if ($message !== ''): ?>
        <div class="message <?php echo h($messageType); ?>"><?php echo h($message); ?></div>
    <?php endif; ?>

    <div class="grid">
        <div class="card">
            <h2>Target Selection</h2>

            <form method="post" id="indexerForm">
                <input type="hidden" name="action" value="generate_zip">

                <label class="label" for="folder">Choose root folder to scan</label>
                <select name="folder" id="folder" onchange="updateTargetDisplay()">
                    <?php foreach ($choices as $choice): ?>
                        <option
                            value="<?php echo h($choice['path']); ?>"
                            <?php echo normalize_path($choice['path']) === normalize_path($selectedPath) ? 'selected' : ''; ?>
                        >
                            <?php echo h($choice['label']); ?>
                        </option>
                    <?php endforeach; ?>
                </select>

                <div class="target-box">
                    <strong>Selected subtree</strong>
                    <code id="relativeTarget"><?php echo h($selectedRelative); ?></code>
                    <div class="small">ZIP root folder: <strong id="siteName"><?php echo h($selectedSiteName); ?></strong></div>
                    <div class="small" style="margin-top:6px">Generated index web root: <strong>/</strong></div>
                    <div class="small" style="margin-top:6px">Each generated page is fully self-contained. No asset folders are created.</div>
                    <div class="small" style="margin-top:6px">Build: <strong><?php echo h(app_meta()['version']); ?></strong> dated <strong><?php echo h(app_meta()['date']); ?></strong></div>
                </div>

                <div class="target-red">
                    <strong>Absolute path that will be affected:</strong>
                    <code id="absoluteTarget"><?php echo h($selectedAbsolute); ?></code>
                    <div class="small" style="margin-top:8px">
                        Scope lock is enforced. Actions only run inside the selected subtree.
                    </div>
                </div>

                <div class="actions">
                    <button class="btn-primary" type="submit" name="action" value="generate_zip">Generate ZIP + Start Download</button>
                    <button class="btn-green" type="submit" name="action" value="remove_generated" onclick="return confirm('Remove only legacy tool-generated index.html files inside the selected subtree?');">Remove Generated Local Indexes</button>
                    <button class="btn-red full" type="submit" name="action" value="remove_all" onclick="return confirm('DANGER: Remove ALL index.html files inside the selected subtree only?');">Remove ALL index.html Files</button>
                </div>
            </form>
        </div>

        <div class="card">
            <h2>Current Rules</h2>

            <div class="kv">
                <div>Version</div><div><?php echo h(app_meta()['version']); ?> <span class="small">(<?php echo h(app_meta()['date']); ?>)</span></div>
                <div>Marker</div><div><code><?php echo h(INDEX_MARKER); ?></code></div>
                <div>Default sort</div><div>Parent Directory, then files, then folders, all alphabetical where applicable</div>
                <div>ZIP behavior</div><div>ZIP is created only in the server temp directory for the current request, streamed to your browser immediately, and deleted automatically. Nothing is written into your site folders.</div>
                <div>Page behavior</div><div>Generated indexes display root as <code>/</code> and keep all CSS and JavaScript inline inside each <code>index.html</code></div>
                <div>Footer behavior</div><div>Every generated page footer includes <code>apache-indexer.php YYYY-MM-DD_HHMMSSAM_v18</code></div>
                <div>Skip behavior</div><div>Skips any folder that already has <code>index.html</code></div>
            </div>

            <h3 style="margin:18px 0 8px;font-size:16px">Excluded folders</h3>
            <ul class="clean">
                <?php foreach ($EXCLUDED_DIRS as $dir): ?>
                    <li><code><?php echo h($dir); ?></code></li>
                <?php endforeach; ?>
            </ul>

            <div class="small" style="margin-top:14px">
                Hidden files and hidden directories are ignored automatically.
            </div>
        </div>
    </div>
    <div class="card" style="margin-top:20px;padding:16px 22px">
        <div class="small" style="display:flex;justify-content:flex-end;gap:16px;flex-wrap:wrap">
            <span><?php echo h(app_footer_text()); ?></span>
        </div>
    </div>
</div>

<script>
(function(){
    const data = <?php echo json_encode($choicesForJs, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE); ?>;

    const folder = document.getElementById('folder');
    const relativeTarget = document.getElementById('relativeTarget');
    const absoluteTarget = document.getElementById('absoluteTarget');
    const siteName = document.getElementById('siteName');

    window.updateTargetDisplay = function(){
        const selected = data.find(item => item.path === folder.value);
        if (!selected) return;
        relativeTarget.textContent = selected.relative;
        absoluteTarget.textContent = selected.path;
        siteName.textContent = selected.siteName;
    };

    updateTargetDisplay();
})();
</script>
</body>
</html>