50 lines
1.3 KiB
PHP
50 lines
1.3 KiB
PHP
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<?php
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require __DIR__ . '/../db.php';
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// Lê o JSON do POST
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$input = json_decode(file_get_contents('php://input'), true);
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if (!$input || empty($input['uid'])) {
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http_response_code(400);
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echo json_encode(['ok' => false, 'err' => 'missing uid']);
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exit;
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}
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$uid = $input['uid'];
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$limit = isset($input['limit']) ? (int)$input['limit'] : 20;
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$pdo->beginTransaction();
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// Bloqueia o device
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$stmt = $pdo->prepare("SELECT id FROM devices WHERE uid=? LIMIT 1 FOR UPDATE");
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$stmt->execute([$uid]);
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$dev = $stmt->fetchColumn();
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if (!$dev) {
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$pdo->rollBack();
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http_response_code(404);
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echo json_encode(['ok' => false, 'err' => 'device']);
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exit;
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}
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// Seleciona comandos pendentes
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$stmt = $pdo->prepare("
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SELECT id, cmd, params
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FROM commands
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WHERE device_id=? AND status='pending'
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ORDER BY queued_at ASC
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LIMIT $limit
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FOR UPDATE
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");
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$stmt->execute([$dev]);
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$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
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if ($rows) {
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$ids = implode(',', array_map('intval', array_column($rows, 'id')));
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$pdo->exec("UPDATE commands SET status='sent', sent_at=NOW() WHERE id IN ($ids)");
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$pdo->prepare("UPDATE devices SET status='online', last_seen=NOW() WHERE id=?")->execute([$dev]);
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}
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$pdo->commit();
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header('Content-Type: application/json');
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echo json_encode(['ok' => true, 'commands' => $rows], JSON_UNESCAPED_SLASHES);
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