import Transport from "@ledgerhq/hw-transport";
import { bip32asBuffer } from "./bip32";
import { MAX_SCRIPT_BLOCK } from "./constants";
export function provideOutputFullChangePath(transport: Transport, path: string): Promise<Buffer> {
  const buffer = bip32asBuffer(path);
  return transport.send(0xe0, 0x4a, 0xff, 0x00, buffer);
}
export async function hashOutputFull(
  transport: Transport,
  outputScript: Buffer,
  additionals: Array<string> = [],
): Promise<Buffer | void> {
  let offset = 0;
  const p1 = Number(0x80);
  const isDecred = additionals.includes("decred");

  ///WARNING: Decred works only with one call (without chunking)
  //TODO: test without this for Decred
  if (isDecred) {
    return transport.send(0xe0, 0x4a, p1, 0x00, outputScript);
  }

  while (offset < outputScript.length) {
    const blockSize =
      offset + MAX_SCRIPT_BLOCK >= outputScript.length
        ? outputScript.length - offset
        : MAX_SCRIPT_BLOCK;
    const p1 = offset + blockSize === outputScript.length ? 0x80 : 0x00;
    const data = outputScript.slice(offset, offset + blockSize);
    await transport.send(0xe0, 0x4a, p1, 0x00, data);
    offset += blockSize;
  }
}