<?php
include 'protect.php';
require_once __DIR__ . '/export_helpers.php';

$mapFile = privateCategorizerDir() . '/item_map.json';
$mapDir = dirname($mapFile);

if (!is_dir($mapDir)) {
    if (!mkdir($mapDir, 0775, true)) {
        http_response_code(500);
        echo 'Failed to create category map directory';
        exit;
    }
}

$itemMap = json_decode(@file_get_contents($mapFile), true);
if (!$itemMap || !is_array($itemMap)) {
    $itemMap = array();
}

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

$itemKey = strtolower(trim((string) $_POST['item']));
$category = trim((string) $_POST['category']);

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

$itemMap[$itemKey] = $category;

if (file_put_contents($mapFile, json_encode($itemMap, JSON_PRETTY_PRINT))) {
    echo 'OK';
    exit;
}

http_response_code(500);
echo 'Failed to save';