import jsonwebtoken from "jsonwebtoken";
const API_TOKEN_TTL_SECONDS = 3 * 60;
const CACHE_TTL_SECONDS = API_TOKEN_TTL_SECONDS - 30;
const tokenCache = {};
export const encodeApiKey = (apiSecretKey, cache = true) => {
    if (!apiSecretKey)
        throw new Error("Api_key is required");
    try {
        if (tokenCache[apiSecretKey] &&
            Date.now() - tokenCache[apiSecretKey].createAt < CACHE_TTL_SECONDS * 1000) {
            return tokenCache[apiSecretKey].token;
        }
        const [apiKey, secret] = apiSecretKey.split(".");
        const payload = {
            api_key: apiKey,
            exp: Math.round(Date.now() * 1000) + API_TOKEN_TTL_SECONDS * 1000,
            timestamp: Math.round(Date.now() * 1000),
        };
        // algorithm = "HS256", headers = { "alg": "HS256", "sign_type": "SIGN" }
        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        // @ts-ignore
        const ret = jsonwebtoken.sign(payload, secret, {
            algorithm: "HS256",
            header: { alg: "HS256", sign_type: "SIGN" },
        });
        if (cache) {
            tokenCache[apiSecretKey] = {
                token: ret,
                createAt: Date.now(),
            };
        }
        return ret;
    }
    catch (e) {
        throw new Error("invalid api_key");
    }
};