const currency = new URLSearchParams(window.location.search).get("currency");
const countryList = document.getElementById("country-list");
fetch("https://countries.trevorblades.com/", {
    "method": "POST",
    "body": JSON.stringify(
        {
            query: "query countriesPayingIn($currency: [String!]!) {countries(filter: {currency: {in:$currency}}) { name code }}",
            "operationName": "countriesPayingIn",
            "variables": { "currency": currency }
        }),
    headers: { "Content-Type": "application/json" }
}).then(response => response.json()).then(({ data }) => {
    document.getElementById("currency").innerText = currency;
    const countries = data.countries;
    for (const country of countries) {
        const newListItem = document.createElement("li");
        newListItem.innerHTML = `<a href="/country.html?code=${country.code}"> ${country.name} </a>`;
        countryList.append(newListItem);
    }
});