"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _debug = _interopRequireDefault(require("debug"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/*
 * Copyright 2018 IBM Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const debug = (0, _debug.default)('plugins/core-support/base64');
/**
 * The command usage model
 *
 */

const usage = {
  command: 'base64',
  strict: 'base64',
  hidden: true,
  required: [{
    name: 'string',
    docs: 'The string to encode or decode'
  }],
  optional: [{
    name: '--decode',
    alias: '-d',
    boolean: true,
    docs: 'Decode the given string'
  }, {
    name: '--break',
    alias: '-b',
    numeric: true,
    docs: 'break encoded string into num character lines'
  }]
};
/**
 * Break the given string into lines with a maximum number of
 * characters, if so instructed
 *
 */

const breakout = (str, options) => {
  if (options.break > 0) {
    let dest = '';

    for (let idx = 0; idx < str.length; idx += options.break) {
      dest = dest + str.slice(idx, Math.min(str.length, idx + options.break)) + '\n';
    }

    return dest;
  } else {
    return str;
  }
};
/**
 * The command handlers
 *
 */


var _default = commandTree => {
  debug('init');
  commandTree.listen('/base64', ({
    argvNoOptions,
    parsedOptions: options
  }) => {
    const str = argvNoOptions[1];
    debug('str', str, argvNoOptions);

    if (options.decode) {
      debug('decoding');
      return breakout(Buffer.from(str, 'base64').toString(), options);
    } else {
      debug('encoding');
      return breakout(Buffer.from(str).toString('base64'), options);
    }
  }, {
    usage
  });
};

exports.default = _default;