<?php
require_once 'WorkflowEngine.php';

session_start();

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

$response = ['success' => false, 'message' => 'An error occurred.'];

if (!isset($_SESSION['user_id'])) {
    $response['message'] = 'You must be logged in to perform this action.';
    echo json_encode($response);
    exit;
}

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    $response['message'] = 'Invalid request method.';
    echo json_encode($response);
    exit;
}

$personId = $_POST['person_id'] ?? null;
$groupId = $_POST['group_id'] ?? null;
$meetingDate = $_POST['meeting_date'] ?? null;
$status = $_POST['attendance_status'] ?? null;
$guestSurvey = $_POST['guest_survey'] ?? null;
$userId = $_SESSION['user_id'];

if (!$personId || !$groupId || !$meetingDate || !$status) {
    $response['message'] = 'Missing required parameters.';
    echo json_encode($response);
    exit;
}

try {
    $workflowEngine = new WorkflowEngine();
    $meetingId = $workflowEngine->getOrCreateMeeting((int)$groupId, $meetingDate);
    $workflowEngine->updateMeetingAttendance($meetingId, (int)$personId, (int)$groupId, $status, (int)$userId, $guestSurvey);

    $response['success'] = true;
    $response['message'] = 'Attendance updated successfully.';
} catch (Exception $e) {
    error_log($e->getMessage());
    $response['message'] = 'Error updating attendance: ' . $e->getMessage();
}

echo json_encode($response);