<?php
/**
 * LAN Print Portal — single file, no dependencies, no database, no CDN.
 *
 * Needs:  nginx + php-fpm + CUPS (cups, cups-client) with a printer already set up.
 *         Works on PHP 7.4 through 8.x.
 * Uploaded files are saved in STORE_DIR so they can be searched and printed again.
 * There is no login: restrict access with nginx (allow/deny) — see the setup notes.
 */
declare(strict_types=1);

// ---------- Settings (the only part you should ever need to edit) ----------
const SITE_TITLE   = 'Print';
const PRINTER      = '';      // '' = let people choose / use the CUPS default. Or e.g. 'Brother_HL'
const CUPS_SERVER  = '';      // '' = this machine. Or 'host:631' to print via another CUPS server
const MAX_COPIES   = 20;
const MAX_FILES    = 10;
const MAX_MB       = 50;      // keep in sync with the nginx / PHP limits
const SHOW_QUEUE   = true;    // show waiting jobs, with a cancel button
const LP           = '/usr/bin/lp';
const LPSTAT       = '/usr/bin/lpstat';
const CANCEL       = '/usr/bin/cancel';

const STORE_DIR    = '/home/clay/Programs/tg_print/printme';   // must be writable by the web user
const RECENT_COUNT = 8;       // files shown when not searching
const TIMEZONE     = '';      // '' = use the system timezone (/etc/timezone)

// Extension => MIME types accepted (CUPS handles these without extra packages)
const ALLOWED = [
    'pdf'  => ['application/pdf'],
    'txt'  => ['text/plain'],
    'jpg'  => ['image/jpeg'],
    'jpeg' => ['image/jpeg'],
    'png'  => ['image/png'],
    'gif'  => ['image/gif'],
];

// ---------- Optional add-ons (extensions.php). The portal works fine without it. ----------
if (is_file(__DIR__ . '/extensions.php')) { require __DIR__ . '/extensions.php'; }
if (!function_exists('ext_boot'))      { function ext_boot(): void {} }
if (!function_exists('ext_css'))       { function ext_css(): string { return ''; } }
if (!function_exists('ext_form_html')) { function ext_form_html(): string { return ''; } }
if (!function_exists('ext_file_html')) { function ext_file_html(string $name): string { return ''; } }
if (!function_exists('ext_lp_args'))   { function ext_lp_args(string $ext): array { return []; } }
if (!function_exists('ext_accept'))    { function ext_accept(): string { return ''; } }
if (!function_exists('ext_hint'))      { function ext_hint(): string { return ''; } }
if (!function_exists('ext_page_html')) { function ext_page_html(): string { return ''; } }
if (!function_exists('ext_convert'))   { function ext_convert(string $tmp, string $orig): ?array { return null; } }

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

function run(array $cmd): array {
    $env = ['PATH' => '/usr/bin:/bin', 'LC_ALL' => 'C'];
    if (CUPS_SERVER !== '') { $env['CUPS_SERVER'] = CUPS_SERVER; }
    $p = @proc_open($cmd, [1 => ['pipe', 'w'], 2 => ['pipe', 'w']], $pipes, null, $env);
    if (!is_resource($p)) { return [1, '', 'Could not start ' . basename($cmd[0])]; }
    $out = stream_get_contents($pipes[1]);
    $err = stream_get_contents($pipes[2]);
    fclose($pipes[1]); fclose($pipes[2]);
    return [proc_close($p), (string)$out, trim((string)$err)];
}

function printers(): array {
    [, $out] = run([LPSTAT, '-p']);
    $list = [];
    if (preg_match_all('/^printer (\S+) (.*)$/m', $out, $m, PREG_SET_ORDER)) {
        foreach ($m as $row) {
            $state = 'Ready';
            if (stripos($row[2], 'disabled') !== false) { $state = 'Offline'; }
            elseif (stripos($row[2], 'now printing') !== false) { $state = 'Printing'; }
            $list[$row[1]] = $state;
        }
    }
    return $list;
}

function default_printer(): string {
    [, $out] = run([LPSTAT, '-d']);
    return preg_match('/destination: (\S+)/', $out, $m) ? $m[1] : '';
}

function jobs(): array {
    [, $out] = run([LPSTAT, '-o']);
    $list = [];
    foreach (preg_split('/\R/', trim($out)) as $line) {
        if (preg_match('/^(\S+-\d+)\s+(\S+)\s+(\d+)/', $line, $m)) {
            $list[] = ['id' => $m[1], 'user' => $m[2], 'kb' => max(1, (int)round(((int)$m[3]) / 1024))];
        }
    }
    return $list;
}

function flash(string $type, string $msg): void { $_SESSION['flash'][] = [$type, $msg]; }

function cut(string $s, int $n): string {
    return preg_match('/^.{0,' . $n . '}/su', $s, $m) ? $m[0] : substr($s, 0, $n);
}

function fmt_size(int $b): string {
    return $b >= 1048576 ? round($b / 1048576, 1) . ' MB' : max(1, (int)round($b / 1024)) . ' KB';
}

function storage_ready(): bool {
    return (is_dir(STORE_DIR) || @mkdir(STORE_DIR, 0775, true)) && is_writable(STORE_DIR);
}

function safe_name(string $orig, string $ext): string {
    $base = trim((string)preg_replace('/[^\w .()-]+/u', '_', pathinfo($orig, PATHINFO_FILENAME)), " ._-");
    return cut($base === '' ? 'file' : $base, 80) . '.' . $ext;
}

function unique_path(string $name): string {
    $p = STORE_DIR . '/' . $name;
    if (!file_exists($p)) { return $p; }
    $base = pathinfo($name, PATHINFO_FILENAME);
    $ext  = pathinfo($name, PATHINFO_EXTENSION);
    for ($i = 2; $i < 1000; $i++) {
        $p = STORE_DIR . "/$base-$i.$ext";
        if (!file_exists($p)) { return $p; }
    }
    return STORE_DIR . "/$base-" . bin2hex(random_bytes(3)) . ".$ext";
}

function stored_path(string $name): ?string {
    if ($name === '' || $name[0] === '.' || $name !== basename($name) || strpos($name, "\0") !== false) { return null; }
    $p = STORE_DIR . '/' . $name;
    return is_file($p) ? $p : null;
}

function list_files(string $q, int $limit): array {
    $terms = $q === '' ? [] : preg_split('/\s+/', $q);
    $out = [];
    if (is_dir(STORE_DIR)) {
        foreach (new DirectoryIterator(STORE_DIR) as $f) {
            $name = $f->getFilename();
            if (!$f->isFile() || $name[0] === '.' || !isset(ALLOWED[strtolower($f->getExtension())])) { continue; }
            foreach ($terms as $t) {
                if (!preg_match('/' . preg_quote($t, '/') . '/iu', $name)) { continue 2; }
            }
            $out[] = ['name' => $name, 'time' => $f->getMTime(), 'size' => $f->getSize()];
        }
    }
    usort($out, function ($a, $b) { return $b['time'] <=> $a['time']; });
    return ['total' => count($out), 'items' => array_slice($out, 0, $limit)];
}

function send_job(string $path, string $dest, int $copies, string $pages, bool $duplex, bool $mono): void {
    $name  = basename($path);
    $label = '“' . cut($name, 60) . '”';
    $ext   = strtolower(pathinfo($path, PATHINFO_EXTENSION));
    if (!isset(ALLOWED[$ext]) || !in_array((new finfo(FILEINFO_MIME_TYPE))->file($path), ALLOWED[$ext], true)) {
        flash('err', "$label isn’t a printable file."); return;
    }
    $cmd = [LP, '-d', $dest, '-n', (string)$copies, '-t', cut((string)preg_replace('/[^\w .-]/u', '_', $name), 80)];
    $cmd[] = '-o'; $cmd[] = $duplex ? 'sides=two-sided-long-edge' : 'sides=one-sided';
    if ($mono)         { $cmd[] = '-o'; $cmd[] = 'print-color-mode=monochrome'; }
    if ($pages !== '') { $cmd[] = '-o'; $cmd[] = 'page-ranges=' . $pages; }
    if ($ext !== 'pdf' && $ext !== 'txt') {
        $actual = isset($_GET['admin']) && ($_POST['actual'] ?? '') === '1';   // admin only: natural size instead of fit
        $cmd[] = '-o'; $cmd[] = $actual ? 'print-scaling=none' : 'fit-to-page';
    }
    foreach (ext_lp_args($ext) as $arg) { $cmd[] = $arg; }
    $cmd[] = $path;
    [$code, , $err] = run($cmd);
    if ($code === 0) { flash('ok', "$label sent to $dest."); }
    else { flash('err', "$label failed: " . ($err ?: 'unknown printing error') . '.'); }
}

function upload_error(int $code): string {
    switch ($code) {
        case UPLOAD_ERR_INI_SIZE:
        case UPLOAD_ERR_FORM_SIZE: return 'is too large';
        case UPLOAD_ERR_PARTIAL:   return 'was only partly received — try again';
        case UPLOAD_ERR_NO_TMP_DIR:
        case UPLOAD_ERR_CANT_WRITE: return 'could not be saved on the server';
        default: return 'could not be uploaded';
    }
}

// ---------- Session / CSRF ----------
if (TIMEZONE !== '') { @date_default_timezone_set(TIMEZONE); }
else {
    $tzf = trim((string)@file_get_contents('/etc/timezone'));
    if ($tzf !== '' && in_array($tzf, timezone_identifiers_list(), true)) { date_default_timezone_set($tzf); }
}
session_name('lanprint');
session_set_cookie_params(['lifetime' => 0, 'path' => '/', 'httponly' => true, 'samesite' => 'Strict']);
session_start();
if (empty($_SESSION['csrf'])) { $_SESSION['csrf'] = bin2hex(random_bytes(16)); }

header('X-Content-Type-Options: nosniff');

/*
 * Permit this print portal to load inside Organizr,
 * as long as both are accessed from the same scheme/host/port.
 
header('X-Frame-Options: SAMEORIGIN');

header(
    "Content-Security-Policy: "
    . "default-src 'none'; "
    . "style-src 'unsafe-inline'; "
    . "script-src 'unsafe-inline'; "
    . "form-action 'self'; "
    . "base-uri 'none'; "
    . "frame-ancestors 'self'"
);

header('Referrer-Policy: no-referrer');
header('Cache-Control: no-store');
*/
ext_boot();

// ---------- Actions ----------
$q = cut(trim((string)($_POST['q'] ?? $_GET['q'] ?? '')), 100);
$admin = isset($_GET['admin']);   // Delete buttons only appear at /print/?admin

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $printers = printers();
    $action   = (string)($_POST['action'] ?? '');

    if ((int)($_SERVER['CONTENT_LENGTH'] ?? 0) > 0 && !$_POST && !$_FILES) {
        flash('err', 'That upload was too large. The limit is ' . MAX_MB . ' MB in total.');
    } elseif (!hash_equals($_SESSION['csrf'], (string)($_POST['csrf'] ?? ''))) {
        flash('err', 'This page expired. Please try again.');
    } elseif ($action === 'cancel') {
        $job = (string)($_POST['job'] ?? '');
        if (preg_match('/^[A-Za-z0-9_.-]+-\d+$/', $job)) {
            [$code, , $err] = run([CANCEL, $job]);
            $code === 0 ? flash('ok', 'Job cancelled.') : flash('err', 'Could not cancel the job. ' . $err);
        }
    } elseif ($action === 'delete') {
        $path = $admin ? stored_path((string)($_POST['file'] ?? '')) : null;
        if ($path !== null && @unlink($path)) { flash('ok', 'Deleted “' . cut(basename($path), 60) . '”.'); }
        else { flash('err', 'Could not delete that file.'); }
    } else {
        $dest    = PRINTER !== '' ? PRINTER : (string)($_POST['printer'] ?? default_printer());
        $copies  = max(1, min(MAX_COPIES, (int)($_POST['copies'] ?? 1)));
        $pages   = preg_replace('/\s+/', '', (string)($_POST['pages'] ?? ''));
        $duplex  = ($_POST['duplex'] ?? '') === '1';
        $mono    = ($_POST['mono'] ?? '') === '1';
        $reprint = (string)($_POST['reprint'] ?? '');
        $names   = (array)($_FILES['files']['name'] ?? []);

        if (!isset($printers[$dest])) {
            flash('err', 'No printer is available. Ask the person who runs this server.');
        } elseif ($pages !== '' && !preg_match('/^\d+(-\d+)?(,\d+(-\d+)?)*$/', $pages)) {
            flash('err', 'Pages should look like 1-3,5 — leave empty to print everything.');
        } elseif ($reprint !== '') {
            $path = stored_path($reprint);
            if ($path === null) { flash('err', 'That file is no longer in the folder.'); }
            else { @touch($path); send_job($path, $dest, $copies, $pages, $duplex, $mono); }
        } elseif (!$names || (string)$names[0] === '') {
            flash('err', 'Choose at least one file first.');
        } elseif (count($names) > MAX_FILES) {
            flash('err', 'Please send at most ' . MAX_FILES . ' files at a time.');
        } elseif (!storage_ready()) {
            flash('err', 'The save folder is missing or not writable: ' . STORE_DIR);
        } else {
            $finfo = new finfo(FILEINFO_MIME_TYPE);
            foreach ($names as $i => $orig) {
                $orig  = (string)$orig;
                $label = '“' . cut($orig, 60) . '”';
                $tmp   = (string)$_FILES['files']['tmp_name'][$i];
                $errc  = (int)$_FILES['files']['error'][$i];
                if ($errc !== UPLOAD_ERR_OK) { flash('err', "$label " . upload_error($errc) . '.'); continue; }

                $conv = ext_convert($tmp, $orig);   // Office files become PDFs (see extensions.php)
                if ($conv !== null) {
                    if (isset($conv['error'])) { flash('err', "$label " . $conv['error']); continue; }
                    $tmp = $conv['path']; $orig = $conv['name']; $label = '“' . cut($orig, 60) . '”';
                }

                $ext = strtolower(pathinfo($orig, PATHINFO_EXTENSION));
                if (!isset(ALLOWED[$ext])) {
                    $hint = in_array($ext, ['heic', 'heif'], true) ? ' Photos in HEIC format must be shared as JPEG.' : '';
                    flash('err', "$label can’t be printed here (accepted: PDF, TXT, JPG, PNG, GIF)." . $hint);
                    continue;
                }
                if (!in_array($finfo->file($tmp), ALLOWED[$ext], true)) { flash('err', "$label doesn’t look like a real .$ext file."); continue; }

                $path = unique_path(safe_name($orig, $ext));
                if (!($conv !== null ? @rename($tmp, $path) : move_uploaded_file($tmp, $path))) { flash('err', "$label could not be saved on the server."); continue; }
                @chmod($path, 0664);
                send_job($path, $dest, $copies, $pages, $duplex, $mono);
            }
        }
    }
    $qs = [];
    if ($q !== '') { $qs[] = 'q=' . rawurlencode($q); }
    if ($admin)    { $qs[] = 'admin'; }
    $loc = (strtok($_SERVER['REQUEST_URI'], '?') ?: '/') . ($qs ? '?' . implode('&', $qs) : '');
    header('Location: ' . $loc, true, 303);
    exit;
}

// ---------- Page data ----------
$printers = printers();
$default  = PRINTER !== '' ? PRINTER : default_printer();
if (!isset($printers[$default])) { $default = (string)(array_key_first($printers) ?? ''); }
$jobs     = SHOW_QUEUE ? jobs() : [];
$flashes  = $_SESSION['flash'] ?? [];
unset($_SESSION['flash']);
$state    = $printers[$default] ?? 'Offline';
$files    = list_files($q, $q === '' ? RECENT_COUNT : 50);
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
<meta name="color-scheme" content="light dark">
<title><?= h(SITE_TITLE) ?></title>
<style>
:root{--bg:#eef0f3;--card:#fff;--ink:#16202b;--mute:#5d6b7a;--line:#d5dae1;--accent:#1d4ed8;--accent-ink:#fff;--ok:#157347;--okbg:#e4f4ea;--err:#b3261e;--errbg:#fbe9e7;--r:14px}
@media (prefers-color-scheme:dark){:root{--bg:#10151b;--card:#1a212a;--ink:#e8edf2;--mute:#9aa8b6;--line:#2c3742;--accent:#6e9bff;--accent-ink:#0b1220;--ok:#6fd49a;--okbg:#14301f;--err:#ff9188;--errbg:#3a1b19}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;padding:max(16px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) max(24px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}
main{max-width:520px;margin:0 auto}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 2px 16px}
h1{font-size:1.5rem;margin:0;letter-spacing:-.01em}
.pill{font-size:.85rem;padding:3px 11px;border-radius:99px;border:1px solid var(--line);color:var(--mute);white-space:nowrap}
.pill::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:7px;background:var(--mute)}
.pill.Ready::before{background:var(--ok)}.pill.Printing::before{background:var(--accent)}.pill.Offline::before{background:var(--err)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:16px}
.msg{border-radius:10px;padding:10px 14px;margin-bottom:10px;font-size:.95rem}
.msg.ok{background:var(--okbg);color:var(--ok)}.msg.err{background:var(--errbg);color:var(--err)}
.drop{position:relative;display:block;border:2px dashed var(--line);border-radius:var(--r);padding:30px 16px;text-align:center;color:var(--mute);transition:border-color .15s,background .15s}
.drop:hover,.drop:focus-within,.drop.over{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 7%,transparent)}
.drop input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;font-size:0}
.drop strong{display:block;color:var(--ink);font-size:1.1rem;margin-bottom:2px}
.drop svg{width:34px;height:34px;stroke:var(--accent);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin-bottom:8px}
#picked{list-style:none;margin:12px 0 0;padding:0;font-size:.92rem;overflow-wrap:anywhere}
#picked li{padding:4px 0;border-bottom:1px solid var(--line)}#picked li:last-child{border:0}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.full{grid-column:1/-1}
label.f{display:block;font-size:.9rem;color:var(--mute)}
input[type=number],input[type=text],select{width:100%;margin-top:4px;padding:11px 12px;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px}
input:focus-visible,select:focus-visible,button:focus-visible,.drop:focus-within{outline:3px solid color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:2px}
.chk{display:flex;align-items:center;gap:10px;min-height:44px;color:var(--ink);font-size:1rem}
.chk input{width:22px;height:22px;accent-color:var(--accent)}
button{font:inherit;cursor:pointer}
.go{width:100%;margin-top:18px;padding:15px;border:0;border-radius:12px;background:var(--accent);color:var(--accent-ink);font-weight:600;font-size:1.08rem}
.go:disabled{opacity:.6;cursor:progress}
h2{font-size:1rem;margin:0 0 8px}
.job{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;border-top:1px solid var(--line);font-size:.92rem}
.job:first-of-type{border-top:0}.job small{color:var(--mute)}
.job button{padding:7px 14px;border:1px solid var(--line);border-radius:8px;background:none;color:var(--err)}
.mute{color:var(--mute);font-size:.88rem;margin:0}
.search{display:flex;gap:8px;margin-bottom:8px}
.search input{flex:1;min-width:0;padding:10px 12px;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px}
.mini{display:inline-block;padding:9px 14px;border:1px solid var(--line);border-radius:8px;background:none;color:var(--ink);font:inherit;text-decoration:none}
.mini.p{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.mini.del{color:var(--err)}
.file{display:flex;align-items:center;gap:8px;padding:10px 0;border-top:1px solid var(--line)}
.fn{flex:1;min-width:0;overflow-wrap:anywhere;font-size:.95rem}
.fn small{display:block;color:var(--mute)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
<?= ext_css() ?>
</style>
</head>
<body>
<main>
<header>
  <h1><?= h(SITE_TITLE) ?></h1>
  <?php if ($default !== ''): ?><span class="pill <?= h($state) ?>"><?= h(str_replace('_', ' ', $default)) ?> · <?= h($state) ?></span><?php endif; ?>
</header>

<?php foreach ($flashes as [$type, $text]): ?>
  <div class="msg <?= $type === 'ok' ? 'ok' : 'err' ?>" role="status"><?= h($text) ?></div>
<?php endforeach; ?>

<?php if (!$printers): ?>
  <div class="card"><h2>No printer found</h2><p class="mute">The server can’t see any printer. Check that CUPS is running and a printer is added.</p></div>
<?php else: ?>
<form class="card" method="post" enctype="multipart/form-data" id="f">
  <input type="hidden" name="csrf" value="<?= h($_SESSION['csrf']) ?>">
  <input type="hidden" name="q" value="<?= h($q) ?>">
  <label class="drop" id="drop">
    <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M6 9V3h12v6M6 18H4a1 1 0 0 1-1-1v-6a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2v6a1 1 0 0 1-1 1h-2"/><rect x="6" y="14" width="12" height="7" rx="1"/></svg>
    <strong>Choose files to print</strong>
    PDF, text<?= $admin ? ', photo' : '' ?><?= h(ext_hint()) ?> · up to <?= MAX_MB ?> MB
    <input type="file" name="files[]" id="files" multiple accept=".pdf,.txt,application/pdf,text/plain<?= h(ext_accept() . ($admin ? ',.jpg,.jpeg,.png,.gif' : '')) ?>" aria-label="Choose files to print">
  </label>
  <ul id="picked" aria-live="polite"></ul>

  <div class="grid">
    <?php if (PRINTER === '' && count($printers) > 1): ?>
    <label class="f full">Printer
      <select name="printer">
        <?php foreach ($printers as $name => $st): ?>
          <option value="<?= h($name) ?>"<?= $name === $default ? ' selected' : '' ?>><?= h(str_replace('_', ' ', $name)) ?> (<?= h($st) ?>)</option>
        <?php endforeach; ?>
      </select>
    </label>
    <?php endif; ?>
    <label class="f">Copies
      <input type="number" name="copies" value="1" min="1" max="<?= MAX_COPIES ?>" inputmode="numeric">
    </label>
    <label class="f">Pages (optional)
      <input type="text" name="pages" placeholder="e.g. 1-3,5" inputmode="text" autocomplete="off" autocapitalize="off">
    </label>
    <label class="chk"><input type="checkbox" name="duplex" value="1"> Both sides</label>
    <label class="chk"><input type="checkbox" name="mono" value="1"> Black &amp; white</label>
    <?= ext_form_html() ?>
    <?php if ($admin): ?><label class="chk full"><input type="checkbox" name="actual" value="1"> Images at actual size (not fit to page)</label><?php endif; ?>
  </div>

  <button class="go" type="submit" id="go">Print</button>
</form>

<section class="card">
  <h2><?= $q === '' ? 'Recent files' : 'Search results' ?></h2>
  <form class="search" method="get" role="search">
    <?php if ($admin): ?><input type="hidden" name="admin" value=""><?php endif; ?>
    <input type="search" name="q" value="<?= h($q) ?>" placeholder="Search saved files" aria-label="Search saved files" autocomplete="off">
    <button type="submit" class="mini">Search</button>
    <?php if ($q !== ''): ?><a class="mini" href="?<?= $admin ? 'admin' : '' ?>">Clear</a><?php endif; ?>
  </form>
  <?php if (!$files['items']): ?>
    <p class="mute"><?= $q === '' ? 'Files you print are saved here so you can print them again.' : 'No saved files match “' . h($q) . '”.' ?></p>
  <?php else: ?>
    <p class="mute">Print uses the copies and options above.</p>
    <?php foreach ($files['items'] as $fl): ?>
      <div class="file">
        <span class="fn"><?= h($fl['name']) ?><small><?= h(date('M j, Y g:i a', $fl['time'])) ?> · <?= h(fmt_size($fl['size'])) ?></small></span>
        <?= ext_file_html($fl['name']) ?>
        <button class="mini p" type="submit" form="f" name="reprint" value="<?= h($fl['name']) ?>">Print</button>
        <?php if ($admin): ?><button class="mini del" type="submit" form="del" name="file" value="<?= h($fl['name']) ?>" onclick="return confirm('Delete this saved file?')">Delete</button><?php endif; ?>
      </div>
    <?php endforeach; ?>
    <?php if ($files['total'] > count($files['items'])): ?>
      <p class="mute">Showing <?= count($files['items']) ?> of <?= (int)$files['total'] ?><?= $q === '' ? ' — search to find older files.' : ' — refine your search.' ?></p>
    <?php endif; ?>
  <?php endif; ?>
  <?php if ($admin): ?>
  <form id="del" method="post">
    <input type="hidden" name="csrf" value="<?= h($_SESSION['csrf']) ?>">
    <input type="hidden" name="action" value="delete">
    <input type="hidden" name="q" value="<?= h($q) ?>">
  </form>
  <?php endif; ?>
</section>

<?php if (SHOW_QUEUE && $jobs): ?>
<section class="card">
  <h2>Waiting to print</h2>
  <?php foreach ($jobs as $j): ?>
    <form class="job" method="post">
      <input type="hidden" name="csrf" value="<?= h($_SESSION['csrf']) ?>">
      <input type="hidden" name="action" value="cancel">
      <input type="hidden" name="job" value="<?= h($j['id']) ?>">
      <span><?= h($j['id']) ?><br><small><?= h($j['user']) ?> · <?= (int)$j['kb'] ?> KB</small></span>
      <button type="submit" aria-label="Cancel job <?= h($j['id']) ?>">Cancel</button>
    </form>
  <?php endforeach; ?>
</section>
<?php endif; ?>
<?php endif; ?>

<p class="mute">Printed files are saved on the server so you can print them again.</p>
</main>
<script>
(function(){
  var f=document.getElementById('f'); if(!f) return;
  var input=document.getElementById('files'), list=document.getElementById('picked'),
      go=document.getElementById('go'), drop=document.getElementById('drop');
  input.addEventListener('change',function(){
    list.innerHTML='';
    Array.prototype.forEach.call(input.files,function(file){
      var li=document.createElement('li');
      li.textContent=file.name+' ('+Math.max(1,Math.round(file.size/1024))+' KB)';
      list.appendChild(li);
    });
  });
  ['dragenter','dragover'].forEach(function(e){input.addEventListener(e,function(){drop.classList.add('over')})});
  ['dragleave','drop'].forEach(function(e){input.addEventListener(e,function(){drop.classList.remove('over')})});
  f.addEventListener('submit',function(){ go.disabled=true; go.textContent='Sending…'; });
  window.addEventListener('pageshow',function(){ go.disabled=false; go.textContent='Print'; });
})();
</script>
<?= ext_page_html() ?>
</body>
</html>