'use strict';

Object.defineProperty(exports, "__esModule", {

value: true

});

var _log = require('babel-runtime/core-js/math/log2');

var _log2 = _interopRequireDefault(_log);

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _lcm = require('./lcm');

var _lcm2 = _interopRequireDefault(_lcm);

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

var CharSet = function () {

function CharSet(chars) {

(0, _classCallCheck3.default)(this, CharSet);

this.chars = chars;

this.len = chars.length;

this.entropyPerChar = Math.floor((0, _log2.default)(this.len));

if (this.entropyPerChar != (0, _log2.default)(this.len)) {

throw new Error('EntropyString only supports CharSets with a power of 2 characters');

}

this.charsPerChunk = (0, _lcm2.default)(this.entropyPerChar, 8) / this.entropyPerChar;

}

(0, _createClass3.default)(CharSet, [{

key: 'use',

value: function use(chars) {

var len = chars.length;

// Ensure correct number of characters

if (len != this.len) {

throw new Error('Invalid character count');

}

// Ensure no repeated characters

for (var i = 0; i < len; i++) {

var c = chars.charAt(i);

for (var j = i + 1; j < len; j++) {

if (c === chars.charAt(j)) {

throw new Error('Characters not unique');

}

}

}

this.chars = chars;

}

}]);

return CharSet;

}();

var charSet64 = new CharSet("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_");

var charSet32 = new CharSet("2346789bdfghjmnpqrtBDFGHJLMNPQRT");

var charSet16 = new CharSet("0123456789abcdef");

var charSet8 = new CharSet("01234567");

var charSet4 = new CharSet("ATCG");

var charSet2 = new CharSet("01");

var isValid = function isValid(charSet) {

return charSet instanceof CharSet;

};

exports.default = {

charSet64: charSet64,

charSet32: charSet32,

charSet16: charSet16,

charSet8: charSet8,

charSet4: charSet4,

charSet2: charSet2,

isValid: isValid

};