import { CborByte } from "./byte";
import { CborSet } from "./set";
import { CborUnsigned } from "./unsigned";

export type MetadataMap = {
  [key: number]: string;
};

const encode = (metadataMap: MetadataMap) => {
  const keys = Object.keys(metadataMap);
  const size = Object.keys(metadataMap).length;

  return keys.reduce((acc, metadataIndex) => {
    const index = parseInt(metadataIndex);

    const encodedNumber = CborUnsigned.encode(parseInt(metadataIndex));
    const encodedValue = CborByte.encode(metadataMap[index]);

    return `${acc}${encodedNumber}${encodedValue}`;
  }, `${CborSet.sizeToCbor(size)}`);
};

export const CborMetadata = {
  encode,
};