<?php
/* autosave.php
   Handles AJAX saving of item ? category mappings
*/

$map_file = __DIR__ . "/item_map.json";

/* Load existing map or create blank */
$item_map = json_decode(@file_get_contents($map_file), true);
if (!$item_map || !is_array($item_map)) {
    $item_map = [];
}

/* Validate request */
if (!isset($_POST['item']) || !isset($_POST['category'])) {
    http_response_code(400);
    echo "Missing parameters";
    exit;
}

$item_key = strtolower(trim($_POST['item'])); // e.g., "monster"
$category = trim($_POST['category']);

if ($item_key === "" || $category === "") {
    http_response_code(400);
    echo "Invalid values";
    exit;
}

/* Update mapping: lowercased item name => category */
$item_map[$item_key] = $category;

/* Save JSON safely */
if (file_put_contents($map_file, json_encode($item_map, JSON_PRETTY_PRINT))) {
    echo "OK";
} else {
    http_response_code(500);
    echo "Failed to save";
}
?>