/*jshint bitwise: false*/
'use strict';

angular.module('footierepoApp')
    .service('Base64', function () {
        var keyStr = 'ABCDEFGHIJKLMNOP' +
            'QRSTUVWXYZabcdef' +
            'ghijklmnopqrstuv' +
            'wxyz0123456789+/' +
            '=';
        this.encode = function (input) {
            var output = '',
                chr1, chr2, chr3 = '',
                enc1, enc2, enc3, enc4 = '',
                i = 0;

            while (i < input.length) {
                chr1 = input.charCodeAt(i++);
                chr2 = input.charCodeAt(i++);
                chr3 = input.charCodeAt(i++);

                enc1 = chr1 >> 2;
                enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
                enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
                enc4 = chr3 & 63;

                if (isNaN(chr2)) {
                    enc3 = enc4 = 64;
                } else if (isNaN(chr3)) {
                    enc4 = 64;
                }

                output = output +
                    keyStr.charAt(enc1) +
                    keyStr.charAt(enc2) +
                    keyStr.charAt(enc3) +
                    keyStr.charAt(enc4);
                chr1 = chr2 = chr3 = '';
                enc1 = enc2 = enc3 = enc4 = '';
            }

            return output;
        };

        this.decode = function (input) {
            var output = '',
                chr1, chr2, chr3 = '',
                enc1, enc2, enc3, enc4 = '',
                i = 0;

            // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
            input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');

            while (i < input.length) {
                enc1 = keyStr.indexOf(input.charAt(i++));
                enc2 = keyStr.indexOf(input.charAt(i++));
                enc3 = keyStr.indexOf(input.charAt(i++));
                enc4 = keyStr.indexOf(input.charAt(i++));

                chr1 = (enc1 << 2) | (enc2 >> 4);
                chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
                chr3 = ((enc3 & 3) << 6) | enc4;

                output = output + String.fromCharCode(chr1);

                if (enc3 !== 64) {
                    output = output + String.fromCharCode(chr2);
                }
                if (enc4 !== 64) {
                    output = output + String.fromCharCode(chr3);
                }

                chr1 = chr2 = chr3 = '';
                enc1 = enc2 = enc3 = enc4 = '';
            }
        };
    })
    .factory('StorageService', function ($window) {
        return {

            get: function (key) {
                return JSON.parse($window.localStorage.getItem(key));
            },

            save: function (key, data) {
                $window.localStorage.setItem(key, JSON.stringify(data));
            },

            remove: function (key) {
                $window.localStorage.removeItem(key);
            },

            clearAll : function () {
                $window.localStorage.clear();
            }
        };
    });

