new_chat.php

<?php
// Include the database connection file
require_once 'lib.required.php';
require_once 'db.php';

// Check if the user is authenticated (i.e. if the username is not empty)
if (empty($user)) {
    // If the user is not authenticated, output an error message and exit the script
    die("User not authenticated");
}
$_SESSION['searchr_term'] = '';
unset($_SESSION['search_term']);

$deployment = $config['azure']['default'];
$document_name = $_SESSION['document_name'] = '';
$document_text = $_SESSION['document_text'] = '';

// Check if the request method is POST
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // Create a new chat in the database using the authenticated user's username as the chat's creator
    $newChatId = create_chat($user, 'Chat', '', $deployment, $document_name, $document_text);
    
    // Return the ID of the new chat as a JSON object to the client
    echo json_encode(['chat_id' => $newChatId]);
}