<?php
declare(strict_types=1);
require_once __DIR__ . '/../includes/bootstrap.php';

header('Content-Type: application/json');

$conversationId = (int)($_GET['conversation_id'] ?? 0);
if ($conversationId <= 0) {
    echo json_encode(['items' => []]);
    exit;
}

$stmt = db()->prepare("SELECT id, direction, body, status, created_at FROM messages WHERE conversation_id = :cid ORDER BY created_at ASC");
$stmt->bindValue(':cid', $conversationId, PDO::PARAM_INT);
$stmt->execute();
$items = $stmt->fetchAll();

echo json_encode(['items' => $items]);