Folder reorganize 1

data/latency-monitor.php

@@ -0,0 +1,171 @@
+<?php // phpcs:ignoreFile
+
+require __DIR__ . '/../includes/db.php';
+
+$appTimeZone = new DateTimeZone('America/Chicago');
+$errorMessage = null;
+$devices = [];
+
+try {
+    $connection = controls_db_connect();
+} catch (Throwable $exception) {
+    $connection = null;
+    $errorMessage = $exception->getMessage();
+}
+
+if ($connection instanceof mysqli) {
+    $sql = <<<SQL
+SELECT d.id,
+       d.host,
+       d.label,
+       latest.status,
+       latest.latency_ms,
+       latest.checked_at
+FROM monitoring_devices AS d
+LEFT JOIN (
+    SELECT l1.device_id,
+           l1.status,
+           l1.latency_ms,
+           l1.checked_at
+    FROM monitoring_latency_log AS l1
+    INNER JOIN (
+        SELECT device_id, MAX(checked_at) AS max_checked
+        FROM monitoring_latency_log
+        GROUP BY device_id
+    ) AS recent ON recent.device_id = l1.device_id AND recent.max_checked = l1.checked_at
+) AS latest ON latest.device_id = d.id
+WHERE d.is_active = 1
+ORDER BY d.label;
+SQL;
+
+    try {
+        $result = $connection->query($sql);
+        if ($result instanceof mysqli_result) {
+            while ($row = $result->fetch_assoc()) {
+                if (!empty($row['checked_at'])) {
+                    $timestamp = DateTimeImmutable::createFromFormat(
+                        'Y-m-d H:i:s',
+                        $row['checked_at'],
+                        new DateTimeZone('UTC')
+                    );
+                    if ($timestamp instanceof DateTimeImmutable) {
+                        $timestamp = $timestamp->setTimezone($appTimeZone);
+                        $row['checked_at_formatted'] = $timestamp->format('M j, Y g:i:s A T');
+                    }
+                }
+
+                $devices[] = $row;
+            }
+            $result->free();
+        }
+    } catch (Throwable $exception) {
+        $errorMessage = $exception->getMessage();
+    } finally {
+        $connection->close();
+    }
+}
+
+ob_start();
+?>
+
+<header class="panel-header">
+  <h2>Device latency status</h2>
+  <p>Latest response times collected by the latency watcher service.</p>
+</header>
+
+<?php if (!empty($errorMessage ?? null)) : ?>
+  <div class="panel-error">
+    <strong>Unable to load data:</strong>
+    <span><?php echo htmlspecialchars($errorMessage); ?></span>
+  </div>
+<?php elseif (empty($devices)) : ?>
+  <div class="panel-loading">
+    <span>No latency samples have been recorded yet.</span>
+    <span>Verify the watcher is running and devices are configured.</span>
+  </div>
+<?php else : ?>
+  <div class="latency-table-wrapper">
+    <table class="latency-table">
+      <thead>
+        <tr>
+          <th scope="col">Device</th>
+          <th scope="col">Host</th>
+          <th scope="col">Status</th>
+          <th scope="col">Latency (ms)</th>
+          <th scope="col">Last checked</th>
+        </tr>
+      </thead>
+      <tbody>
+        <?php foreach ($devices as $device) : ?>
+          <?php
+            $status = $device['status'] ?? null;
+            $latency = $device['latency_ms'] ?? null;
+            $statusLabel = 'Unknown';
+            $statusClass = 'status-pill--unknown';
+
+            $trendUrl = 'trends/live/autochart.php?'
+                . http_build_query([
+                    'primary' => 'latency:' . $device['id'],
+                    'primary_label' => $device['label'],
+                    'autostart' => '1',
+                    'interval' => '5000',
+                ]);
+
+            if ($status === 'up') {
+                $statusLabel = 'Online';
+                $statusClass = 'status-pill--up';
+            } elseif ($status === 'down') {
+                $statusLabel = 'Offline';
+                $statusClass = 'status-pill--down';
+            }
+          ?>
+          <tr>
+            <td data-label="Device">
+              <a class="latency-link" href="<?php echo htmlspecialchars($trendUrl, ENT_QUOTES, 'UTF-8'); ?>" target="_blank" rel="noopener">
+                <?php echo htmlspecialchars($device['label']); ?>
+              </a>
+            </td>
+            <td data-label="Host"><?php echo htmlspecialchars($device['host']); ?></td>
+            <td data-label="Status">
+              <span class="status-pill <?php echo $statusClass; ?>">
+                <?php echo htmlspecialchars($statusLabel); ?>
+              </span>
+            </td>
+            <td data-label="Latency">
+              <?php echo $latency !== null ? number_format((float) $latency, 0) : '—'; ?>
+            </td>
+            <td data-label="Last checked">
+              <?php echo htmlspecialchars($device['checked_at_formatted'] ?? '—'); ?>
+            </td>
+          </tr>
+        <?php endforeach; ?>
+      </tbody>
+    </table>
+  </div>
+<?php endif; ?>
+
+<footer class="latency-footnote">
+  <p>
+    Results update whenever <code>monitoring/latency_watcher.py</code> records a sample.
+    Configure devices in the <code>monitoring_devices</code> table and ensure the watcher
+    has database access.
+  </p>
+</footer>
+
+<?php
+$payload = ob_get_clean();
+$etag = '"' . md5($payload) . '"';
+$clientEtag = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? trim($_SERVER['HTTP_IF_NONE_MATCH']) : null;
+
+if ($clientEtag && $clientEtag === $etag) {
+    header('HTTP/1.1 304 Not Modified');
+    header('Cache-Control: no-cache, must-revalidate');
+    header('ETag: ' . $etag);
+    exit;
+}
+
+header('Cache-Control: no-cache, must-revalidate');
+header('Content-Type: text/html; charset=utf-8');
+header('ETag: ' . $etag);
+
+echo $payload;