Add admin health page and printable 24h export

- add a protected health.php page for config, XMLTV and M3U diagnostics
- add shared admin/config helpers for authenticated internal tools
- add a styled 24h export page designed for PDF/print output
- add browser-side PNG export for the daily schedule
- update README with the new admin tools

health.php

@@ -0,0 +1,274 @@
+<?php
+require_once __DIR__ . '/src/lib/admin.php';
+
+$config = gridtv_load_config();
+gridtv_require_admin($config, 'Health');
+[$locale, $L] = gridtv_load_locale($config);
+
+function health_status_class(bool $ok): string {
+    return $ok ? 'ok' : 'ko';
+}
+
+function health_status_label(bool $ok): string {
+    return $ok ? 'OK' : 'Issue';
+}
+
+function health_parse_xmltv(string $xml): array {
+    if ($xml === '') {
+        return ['ok' => false, 'error' => 'Empty response'];
+    }
+
+    libxml_use_internal_errors(true);
+    $dom = new DOMDocument();
+    $loaded = $dom->loadXML($xml, LIBXML_NOERROR | LIBXML_NOWARNING);
+    $errors = array_map(static fn($e) => trim($e->message), libxml_get_errors());
+    libxml_clear_errors();
+
+    if (!$loaded) {
+        return ['ok' => false, 'error' => $errors[0] ?? 'Invalid XML'];
+    }
+
+    $xp = new DOMXPath($dom);
+    $programmes = $xp->query('/tv/programme');
+    $channels = $xp->query('/tv/channel');
+    $categories = $xp->query('/tv/programme/category');
+    $subtitles = $xp->query('/tv/programme/sub-title');
+    $ratings = $xp->query('/tv/programme/rating');
+    $dates = $xp->query('/tv/programme/date');
+
+    $first = null;
+    $last = null;
+    foreach ($programmes as $programme) {
+        $start = $programme->getAttribute('start');
+        $stop = $programme->getAttribute('stop');
+        if ($start !== '' && ($first === null || strcmp($start, $first) < 0)) $first = $start;
+        if ($stop !== '' && ($last === null || strcmp($stop, $last) > 0)) $last = $stop;
+    }
+
+    return [
+        'ok' => true,
+        'channels' => $channels->length,
+        'programmes' => $programmes->length,
+        'categories' => $categories->length,
+        'subtitles' => $subtitles->length,
+        'ratings' => $ratings->length,
+        'dates' => $dates->length,
+        'first_start' => $first,
+        'last_stop' => $last,
+    ];
+}
+
+function health_parse_m3u(string $body): array {
+    $lines = preg_split('/\r\n|\r|\n/', $body);
+    $streams = 0;
+    $extinf = 0;
+    foreach ($lines as $line) {
+        $line = trim($line);
+        if ($line === '') continue;
+        if (stripos($line, '#EXTINF') === 0) {
+            $extinf++;
+            continue;
+        }
+        if ($line[0] !== '#') $streams++;
+    }
+    return ['streams' => $streams, 'extinf' => $extinf];
+}
+
+function health_format_xmltv_stamp(?string $stamp): string {
+    if (!$stamp) return '—';
+    $dt = DateTime::createFromFormat('YmdHis O', $stamp);
+    if (!$dt) return $stamp;
+    return $dt->format('d/m/Y H:i');
+}
+
+$config_path = gridtv_config_path();
+$config_exists = file_exists($config_path);
+$config_writable = $config_exists ? is_writable($config_path) : is_writable(dirname($config_path));
+$sources = array_values($config['epg_sources'] ?? []);
+
+$checks = [
+    [
+        'label' => 'Config file',
+        'ok' => $config_exists,
+        'detail' => $config_exists ? basename($config_path) . ' found' : 'Missing config.json',
+    ],
+    [
+        'label' => 'Config writable',
+        'ok' => $config_writable,
+        'detail' => $config_writable ? 'Writable by PHP' : 'Not writable by PHP',
+    ],
+    [
+        'label' => 'PHP version',
+        'ok' => version_compare(PHP_VERSION, '8.0.0', '>='),
+        'detail' => 'PHP ' . PHP_VERSION,
+    ],
+    [
+        'label' => 'php-curl',
+        'ok' => extension_loaded('curl'),
+        'detail' => extension_loaded('curl') ? 'Extension loaded' : 'Missing php-curl',
+    ],
+    [
+        'label' => 'Configured sources',
+        'ok' => count($sources) > 0,
+        'detail' => count($sources) . ' source(s) in config',
+    ],
+];
+
+$source_reports = [];
+foreach ($sources as $index => $source) {
+    $epg_url = trim((string) ($source['epg_url'] ?? ''));
+    $m3u_url = trim((string) ($source['m3u_url'] ?? ''));
+
+    $epg_fetch = $epg_url !== '' ? gridtv_fetch_url($epg_url, 25) : ['ok' => false, 'status' => 0, 'error' => 'Missing URL', 'body' => '', 'content_type' => '', 'final_url' => '', 'time_total' => 0.0];
+    $epg_stats = $epg_fetch['ok'] ? health_parse_xmltv($epg_fetch['body']) : ['ok' => false, 'error' => $epg_fetch['error'] ?: 'HTTP ' . $epg_fetch['status']];
+
+    $m3u_fetch = null;
+    $m3u_stats = null;
+    if ($m3u_url !== '') {
+        $m3u_fetch = gridtv_fetch_url($m3u_url, 20);
+        $m3u_stats = $m3u_fetch['ok'] ? health_parse_m3u($m3u_fetch['body']) : null;
+    }
+
+    $source_reports[] = [
+        'name' => $source['name'] ?: 'Source ' . ($index + 1),
+        'epg_url' => $epg_url,
+        'm3u_url' => $m3u_url,
+        'epg_fetch' => $epg_fetch,
+        'epg_stats' => $epg_stats,
+        'm3u_fetch' => $m3u_fetch,
+        'm3u_stats' => $m3u_stats,
+    ];
+}
+?><!DOCTYPE html>
+<html lang="<?= htmlspecialchars($locale) ?>">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>GridTV — Health</title>
+<link rel="stylesheet" href="/assets/fonts/fonts.css">
+<style>
+:root{--bg:#0b0d10;--surface:#13161b;--surface2:#1a1f27;--border:#2a3240;--accent:#e8c842;--accent2:#5ec0ff;--text:#eaf0f6;--muted:#8f9aac;--ok:#4fd18b;--warn:#ff6767}
+*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top left,#1b2330 0,#0b0d10 48%);color:var(--text);font-family:'Barlow Condensed',sans-serif}
+.page{max-width:1200px;margin:0 auto;padding:32px 20px 56px}
+.hero{display:flex;justify-content:space-between;gap:18px;align-items:flex-end;margin-bottom:24px}
+.logo{font-family:'Share Tech Mono',monospace;font-size:26px;letter-spacing:.12em;color:var(--accent);text-transform:uppercase}
+.subtitle{color:var(--muted);font-size:14px;max-width:700px;line-height:1.5}
+.actions{display:flex;gap:10px;flex-wrap:wrap}
+.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 14px;border:1px solid var(--border);background:var(--surface);color:var(--text);text-decoration:none;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
+.btn-primary{background:var(--accent);color:#000;border-color:var(--accent)}
+.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-bottom:22px}
+.card,.source{background:rgba(19,22,27,.95);border:1px solid var(--border)}
+.card{padding:16px}
+.eyebrow{font-family:'Share Tech Mono',monospace;font-size:11px;color:var(--accent2);letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
+.value{font-size:28px;font-weight:700}
+.small{font-size:13px;color:var(--muted)}
+.checks{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-bottom:24px}
+.check{padding:14px;background:var(--surface);border:1px solid var(--border)}
+.status{display:inline-flex;align-items:center;gap:8px;font-family:'Share Tech Mono',monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase}
+.status::before{content:'';width:10px;height:10px;border-radius:50%}
+.status.ok{color:var(--ok)}.status.ok::before{background:var(--ok)}
+.status.ko{color:var(--warn)}.status.ko::before{background:var(--warn)}
+.source-list{display:grid;gap:18px}
+.source{padding:20px}
+.source-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;margin-bottom:16px}
+.source-title{font-size:24px;font-weight:700}
+.pill{display:inline-block;padding:6px 10px;font-family:'Share Tech Mono',monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;background:var(--surface2);border:1px solid var(--border);color:var(--accent2)}
+.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}
+.panel{padding:16px;background:var(--surface2);border:1px solid var(--border)}
+.panel h3{margin:0 0 10px;font-size:16px;letter-spacing:.06em;text-transform:uppercase}
+.kv{display:grid;grid-template-columns:160px 1fr;gap:8px;font-size:14px;line-height:1.45}
+.kv div:nth-child(odd){color:var(--muted)}
+.mono{font-family:'Share Tech Mono',monospace;font-size:12px;word-break:break-all}
+@media (max-width:700px){.hero{flex-direction:column;align-items:flex-start}.kv{grid-template-columns:1fr}}
+</style>
+</head>
+<body>
+<div class="page">
+  <div class="hero">
+    <div>
+      <div class="logo">GridTV / Health</div>
+      <div class="subtitle">Page de diagnostic admin. Elle vérifie l’état de l’instance, les flux XMLTV/M3U configurés et les signaux qui aident à comprendre vite ce qui coince.</div>
+    </div>
+    <div class="actions">
+      <a class="btn btn-primary" href="/export.php">Export 24h</a>
+      <a class="btn" href="/setup.php">Setup</a>
+      <a class="btn" href="/index.php">Guide</a>
+    </div>
+  </div>
+
+  <div class="grid">
+    <div class="card"><div class="eyebrow">Group</div><div class="value"><?= htmlspecialchars($config['group_name'] ?? 'GridTV') ?></div><div class="small">Configured TV group name</div></div>
+    <div class="card"><div class="eyebrow">Sources</div><div class="value"><?= count($sources) ?></div><div class="small">Configured XMLTV sources</div></div>
+    <div class="card"><div class="eyebrow">Locale</div><div class="value"><?= strtoupper(htmlspecialchars($locale)) ?></div><div class="small">Detected UI locale</div></div>
+    <div class="card"><div class="eyebrow">Config Size</div><div class="value"><?= $config_exists ? htmlspecialchars(gridtv_format_bytes(filesize($config_path))) : '0 B' ?></div><div class="small"><?= htmlspecialchars($config_path) ?></div></div>
+  </div>
+
+  <div class="checks">
+<?php foreach ($checks as $check): ?>
+    <div class="check">
+      <div class="status <?= health_status_class($check['ok']) ?>"><?= health_status_label($check['ok']) ?></div>
+      <div style="font-size:18px;font-weight:700;margin:8px 0 6px"><?= htmlspecialchars($check['label']) ?></div>
+      <div class="small"><?= htmlspecialchars($check['detail']) ?></div>
+    </div>
+<?php endforeach; ?>
+  </div>
+
+  <div class="source-list">
+<?php foreach ($source_reports as $report): ?>
+    <section class="source">
+      <div class="source-head">
+        <div>
+          <div class="source-title"><?= htmlspecialchars($report['name']) ?></div>
+          <div class="small">EPG host: <?= htmlspecialchars(gridtv_extract_host($report['epg_url'])) ?: '—' ?><?= $report['m3u_url'] ? ' · M3U host: ' . htmlspecialchars(gridtv_extract_host($report['m3u_url'])) : '' ?></div>
+        </div>
+        <span class="pill"><?= htmlspecialchars($report['epg_fetch']['ok'] && $report['epg_stats']['ok'] ? 'Healthy XMLTV' : 'Check source') ?></span>
+      </div>
+      <div class="split">
+        <div class="panel">
+          <h3>XMLTV</h3>
+          <div class="kv">
+            <div>Status</div><div><span class="status <?= health_status_class($report['epg_fetch']['ok'] && $report['epg_stats']['ok']) ?>"><?= health_status_label($report['epg_fetch']['ok'] && $report['epg_stats']['ok']) ?></span></div>
+            <div>URL</div><div class="mono"><?= htmlspecialchars($report['epg_url']) ?></div>
+            <div>HTTP</div><div><?= htmlspecialchars((string) $report['epg_fetch']['status']) ?><?= $report['epg_fetch']['error'] ? ' · ' . htmlspecialchars($report['epg_fetch']['error']) : '' ?></div>
+            <div>Response time</div><div><?= htmlspecialchars(number_format($report['epg_fetch']['time_total'], 2)) ?> s</div>
+<?php if ($report['epg_fetch']['ok'] && $report['epg_stats']['ok']): ?>
+            <div>Channels</div><div><?= htmlspecialchars((string) $report['epg_stats']['channels']) ?></div>
+            <div>Programmes</div><div><?= htmlspecialchars((string) $report['epg_stats']['programmes']) ?></div>
+            <div>Sub-titles</div><div><?= htmlspecialchars((string) $report['epg_stats']['subtitles']) ?></div>
+            <div>Ratings</div><div><?= htmlspecialchars((string) $report['epg_stats']['ratings']) ?></div>
+            <div>Categories</div><div><?= htmlspecialchars((string) $report['epg_stats']['categories']) ?></div>
+            <div>Date tags</div><div><?= htmlspecialchars((string) $report['epg_stats']['dates']) ?></div>
+            <div>Window</div><div><?= htmlspecialchars(health_format_xmltv_stamp($report['epg_stats']['first_start'])) ?> → <?= htmlspecialchars(health_format_xmltv_stamp($report['epg_stats']['last_stop'])) ?></div>
+            <div>Content-Type</div><div><?= htmlspecialchars($report['epg_fetch']['content_type'] ?: '—') ?></div>
+<?php else: ?>
+            <div>Parse</div><div><?= htmlspecialchars($report['epg_stats']['error'] ?? 'Unable to read XMLTV') ?></div>
+<?php endif; ?>
+          </div>
+        </div>
+        <div class="panel">
+          <h3>M3U</h3>
+<?php if (!$report['m3u_url']): ?>
+          <div class="small">No M3U URL configured for this source.</div>
+<?php else: ?>
+          <div class="kv">
+            <div>Status</div><div><span class="status <?= health_status_class((bool) ($report['m3u_fetch']['ok'] ?? false)) ?>"><?= health_status_label((bool) ($report['m3u_fetch']['ok'] ?? false)) ?></span></div>
+            <div>URL</div><div class="mono"><?= htmlspecialchars($report['m3u_url']) ?></div>
+            <div>HTTP</div><div><?= htmlspecialchars((string) ($report['m3u_fetch']['status'] ?? 0)) ?><?= !empty($report['m3u_fetch']['error']) ? ' · ' . htmlspecialchars($report['m3u_fetch']['error']) : '' ?></div>
+            <div>Response time</div><div><?= htmlspecialchars(number_format((float) ($report['m3u_fetch']['time_total'] ?? 0), 2)) ?> s</div>
+<?php if (!empty($report['m3u_fetch']['ok']) && $report['m3u_stats']): ?>
+            <div>Streams</div><div><?= htmlspecialchars((string) $report['m3u_stats']['streams']) ?></div>
+            <div>#EXTINF</div><div><?= htmlspecialchars((string) $report['m3u_stats']['extinf']) ?></div>
+            <div>Content-Type</div><div><?= htmlspecialchars($report['m3u_fetch']['content_type'] ?: '—') ?></div>
+<?php else: ?>
+            <div>Parse</div><div>Unable to load playlist.</div>
+<?php endif; ?>
+          </div>
+<?php endif; ?>
+        </div>
+      </div>
+    </section>
+<?php endforeach; ?>
+  </div>
+</div>
+</body>
+</html>