<?php
session_start();
require_once '../config/db.php';
require_once '../models/TicketModel.php';
require_once '../models/AuditLogModel.php';

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

// Check authentication
if (!isset($_SESSION['user_id'])) {
    echo json_encode(['success' => false, 'error' => 'Not authenticated']);
    exit;
}

// Get request data
$data = json_decode(file_get_contents('php://input'), true);
$ticketId = $data['ticket_id'] ?? null;
$assignedTo = $data['assigned_to'] ?? null;

if (!$ticketId) {
    echo json_encode(['success' => false, 'error' => 'Ticket ID required']);
    exit;
}

$ticketModel = new TicketModel($conn);
$auditLogModel = new AuditLogModel($conn);

if ($assignedTo === null || $assignedTo === '') {
    // Unassign ticket
    $success = $ticketModel->unassignTicket($ticketId, $_SESSION['user_id']);
    if ($success) {
        $auditLogModel->log($_SESSION['user_id'], 'unassign', 'ticket', $ticketId);
    }
} else {
    // Assign ticket
    $success = $ticketModel->assignTicket($ticketId, $assignedTo, $_SESSION['user_id']);
    if ($success) {
        $auditLogModel->log($_SESSION['user_id'], 'assign', 'ticket', $ticketId, ['assigned_to' => $assignedTo]);
    }
}

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