import { createErrorFromCode, SFPToolboxErrorCode } from '../../error/error';
import base64ToArrayBuffer from 'base64-arraybuffer';
import _ from 'lodash';

export class ResetClerk {
  resolve: Function;
  reject: Function;
  onBeginResetting: Function;
  result: number | null;
  resetCommand: string;

  constructor(resolver: Function, rejecter: Function, onBeginReading: Function, resetCommand: string) {
    this.resolve = resolver;
    this.reject = rejecter;
    this.onBeginResetting = onBeginReading;
    this.result = null;
    this.resetCommand = resetCommand;
  }

  appendString(aString: string) {
    if (this.getResult() == null) {
      this.onBeginResetting?.();
    }

    const response = Array.from(new Uint8Array(base64ToArrayBuffer.decode(aString)));
    const result = response.length ? response[0] : 1;
    const commandInResponse = response.slice(1, 3);
    const originalCommand = Array.from(new Uint8Array(base64ToArrayBuffer.decode(this.resetCommand))).slice(
      0,
      2,
    );

    if (result === 0 && _.isEqual(commandInResponse, originalCommand)) {
      this.resolve();
    } else {
      this.reject(createErrorFromCode(SFPToolboxErrorCode.ResetWentWrong));
    }
  }

  getResult() {
    return this.result;
  }
}