var regions = {
    "MSK": "&spp=0&regions=83,75,64,4,38,30,33,70,71,22,31,66,68,82,1,40,48,69,80&stores=117673,122258,122259,125238,125239,125240,507,3158,117501,120602,120762,6158,121709,124731,130744,159402,2737,117986,1733,686,132043&pricemarginCoeff=1.0&reg=0&appType=1&offlineBonus=0&onlineBonus=0&emp=0&locale=ru&lang=ru&curr=rub&couponsGeo=12,3,18,15,21&dest=-1029256,-102269,-2162196,-1275551&sort=popular",
    "SPB": "&spp=0&regions=83,64,4,38,30,33,70,22,31,66,68,82,1,40,48,69,80&stores=125238,125239,125240,117673,122258,122259,117734,159402,2737,161812,117544,132043,121709,124731,117501,507,3158,120762,117986,130744&pricemarginCoeff=1.0&reg=0&appType=1&offlineBonus=0&onlineBonus=0&emp=0&locale=ru&lang=ru&curr=rub&couponsGeo=12,6,7,5,3,18,21&dest=-1216601,-337422,-1114902,-1198058&sort=popular",
    "SMR": "&spp=0&regions=83,64,4,38,30,33,70,22,31,66,68,82,1,40,48,69,80&stores=122258,122259,117230,117986,1733,130744,121709,124731,117501,507,3158,120762,686,159402,2737,1193&pricemarginCoeff=1.0&reg=0&appType=1&offlineBonus=0&onlineBonus=0&emp=0&locale=ru&lang=ru&curr=rub&couponsGeo=2,12,6,7,3,18,22,21&dest=-1075831,-72194,-287507,-283781&sort=popular"
}

async function findPreset(query) {
    try {
        var res = await fetch("https://wbxsearch.wildberries.ru/exactmatch/v2/common?query=" + encodeURI(query), {
            "method": "GET",
            retry: 5,
            pause: 3000
        });
        var json = await res.json();
        if (json['shardKey'] == null)
            return null
        return json;
    } catch (a) {
        console.error(a);
        return null;
    }
}

async function getCatalog(bucket, preset, page = 0, region) {
    try {
        var url = "https://wbxcatalog-ru.wildberries.ru/" + encodeURI(bucket) + "/catalog?" + encodeURI(preset) + "&limit=300&page=" + page + region;
        var res = await fetch(url, {
            headers: {
                'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.109 Safari/537.36'
            },
            "method": "GET",
            retry: 5,
            pause: 3000
        });
        var json = await res.json();
        return json
    } catch (a) {
        console.error(a);
        return null;
    }
}

async function searchByKeyword(keyword) {
    var preset = await findPreset(keyword)
    if (preset != null) {
        var catalog = await getCatalog(preset['shardKey'], preset['query'], 1, regions[key])
    }
}