MQTT publish to HA

api.php

@@ -40,6 +40,11 @@ try {
                 respond(['ok' => true, 'settings' => get_settings($db)]);
                 break;
 
+            case 'publishHa':
+                publish_ha_state($payload['state'] ?? []);
+                respond(['ok' => true]);
+                break;
+
             case 'saveCorrection':
                 save_correction($db, (int)($payload['year'] ?? 0), (int)($payload['month'] ?? 0), $payload['value'] ?? null);
                 respond(['ok' => true, 'corrections' => get_corrections($db)]);
@@ -89,6 +94,81 @@ try {
     fail($e->getMessage(), 500);
 }
 
+function app_config(): array
+{
+    $defaults = [
+        'name' => 'GO Vacation Planner',
+        'topic_prefix' => 'go',
+        'mqtt_host' => '192.168.0.203',
+        'mqtt_port' => 1883,
+    ];
+    $file = __DIR__ . '/config.php';
+    if (is_file($file)) {
+        $config = require $file;
+        if (is_array($config)) return array_replace($defaults, $config);
+    }
+    return $defaults;
+}
+
+function mqtt_pub(array $config, string $topic, string $payload, bool $retain = true): void
+{
+    $host = $config['mqtt_host'];
+    $port = (int)($config['mqtt_port'] ?? 1883);
+    $cmd = 'mosquitto_pub -h ' . escapeshellarg($host)
+        . ' -p ' . escapeshellarg((string)$port)
+        . ' -t ' . escapeshellarg($topic)
+        . ' -m ' . escapeshellarg($payload)
+        . ($retain ? ' -r' : '');
+    @shell_exec($cmd . ' 2>/dev/null');
+}
+
+function publish_ha_discovery(array $config): void
+{
+    $p = trim($config['topic_prefix'], '/');
+    $dev = ['identifiers' => ['go_vacation_planner'], 'name' => $config['name']];
+    $sensors = [
+        'feriefridage' => ['name' => 'Feriefridage', 'unit' => 'd', 'topic' => "$p/feriefridage"],
+        'vacation_days' => ['name' => 'Vacation days', 'unit' => 'd', 'topic' => "$p/vacation_days"],
+        'flex_hours' => ['name' => 'FLEX hours', 'unit' => 'h', 'topic' => "$p/flex_hours"],
+        'total_days' => ['name' => 'Total available days', 'unit' => 'd', 'topic' => "$p/total_days"],
+        'upcoming_vacations' => ['name' => 'Upcoming vacations', 'unit' => '', 'topic' => "$p/upcoming_vacations", 'attributes_topic' => "$p/upcoming_vacations/attributes"],
+    ];
+
+    foreach ($sensors as $id => $sensor) {
+        $payload = [
+            'name' => $sensor['name'],
+            'state_topic' => $sensor['topic'],
+            'unique_id' => "go_$id",
+            'device' => $dev,
+        ];
+        if ($sensor['unit'] !== '') $payload['unit_of_measurement'] = $sensor['unit'];
+        if (isset($sensor['attributes_topic'])) $payload['json_attributes_topic'] = $sensor['attributes_topic'];
+        mqtt_pub($config, "homeassistant/sensor/go_$id/config", json_encode($payload, JSON_UNESCAPED_SLASHES));
+    }
+}
+
+function publish_ha_state(array $state): void
+{
+    $config = app_config();
+    $p = trim($config['topic_prefix'], '/');
+    publish_ha_discovery($config);
+
+    $numeric = ['feriefridage', 'vacation_days', 'flex_hours', 'total_days'];
+    foreach ($numeric as $key) {
+        $value = isset($state[$key]) && is_numeric($state[$key]) ? round((float)$state[$key], 2) : 0;
+        mqtt_pub($config, "$p/$key", (string)$value);
+    }
+
+    $upcoming = is_array($state['upcoming_vacations'] ?? null) ? $state['upcoming_vacations'] : [];
+    $first = $upcoming[0] ?? null;
+    $summary = is_array($first)
+        ? (($first['title'] ?? 'Vacation') . ' ' . ($first['start'] ?? '') . ' → ' . ($first['end'] ?? ''))
+        : 'none';
+    mqtt_pub($config, "$p/upcoming_vacations", $summary);
+    mqtt_pub($config, "$p/upcoming_vacations/attributes", json_encode(['vacations' => $upcoming], JSON_UNESCAPED_SLASHES));
+    mqtt_pub($config, "$p/state", json_encode($state, JSON_UNESCAPED_SLASHES));
+}
+
 function db(): PDO
 {
     if (!is_dir(DB_DIR) && !mkdir(DB_DIR, 0775, true) && !is_dir(DB_DIR)) {

app.js

@@ -93,6 +93,54 @@ function renderAll() {
   renderWarnings();
   renderEntries();
   renderPlanner();
+  scheduleHaPublish();
+}
+
+function scheduleHaPublish() {
+  clearTimeout(scheduleHaPublish.timer);
+  scheduleHaPublish.timer = setTimeout(() => {
+    publishHaState().catch((error) => console.warn('HA publish failed', error));
+  }, 600);
+}
+
+async function publishHaState() {
+  if (!state.plan?.current) return;
+  const current = state.plan.current;
+  await post({
+    action: 'publishHa',
+    state: {
+      feriefridage: Number(current.feriefridage || 0),
+      vacation_days: Number(current.vacation || 0),
+      flex_hours: Number(current.flex || 0),
+      total_days: Number(current.totalDays || 0),
+      upcoming_vacations: upcomingVacationsForHa(),
+      updated_at: new Date().toISOString(),
+    },
+  });
+}
+
+function upcomingVacationsForHa() {
+  const today = toIsoDate(new Date());
+  return state.entries
+    .filter((entry) => entry.end_date >= today)
+    .sort((a, b) => a.start_date.localeCompare(b.start_date) || a.id - b.id)
+    .map((entry) => {
+      const summary = state.plan.entrySummaries[entry.id] || { workdays: 0, usedVacation: 0, usedFeriefridage: 0, usedFlex: 0, usedFlexDays: 0 };
+      return {
+        title: entry.title,
+        start: entry.start_date,
+        end: entry.end_date,
+        start_display: formatDate(entry.start_date),
+        end_display: formatDate(entry.end_date),
+        status: entry.status,
+        source: entry.source,
+        workdays: Number(summary.workdays || 0),
+        vacation_days: Number(summary.usedVacation || 0),
+        feriefridage: Number(summary.usedFeriefridage || 0),
+        flex_hours: Number(summary.usedFlex || 0),
+        flex_days: Number(summary.usedFlexDays || 0),
+      };
+    });
 }
 
 function fillSettingsForm() {