import { b64uEnc } from "./b64";
import { cryptoUtils, PrivateKey } from '@hiveio/dhive';

export interface HiveSignerMessage {
    signed_message: {
        type: string;
        app: string;
    },
    authors: string[];
    timestamp: number;
    signatures?: string[];
}


export const makeHsCode = async (account: string, privateKey:PrivateKey): Promise<string> => {
    const timestamp = new Date().getTime() / 1000;
    const messageObj: HiveSignerMessage = {signed_message: {type: 'code', app: "ecency.app"}, authors: [account], timestamp};
    const message = JSON.stringify(messageObj);
    const signature = signer(message, privateKey);
    messageObj.signatures = [signature];
    return b64uEnc(JSON.stringify(messageObj));
}


export const signer = (message:any, privateKey:PrivateKey) => {
    const hash = cryptoUtils.sha256(message);
    const key = privateKey;
    const signedKey = key.sign(hash);
    const signedStr = signedKey.toString();
    return signedStr
}