Calculation/app/public/js/setting.js

'use strict';

/**
 * 项目信息js
 *
 * @author EllisRan.
 * @date 2019/3/19
 * @version
 */

$(document).ready(() => {
    // 启用和停用账号
    $('.account-switch-btn').on('click', function () {
        const data = {
            enable: $(this).hasClass('btn-outline-success') ? 1 : 0,
            id: $(this).data('account'),
        };
        postData('/setting/user/switch', data, function () {
            window.location.href = '/setting/user';
        });
    });

    // 编辑账号
    $('a[data-target="#edit-user"]').on('click', function () {
        const account = $(this).data('account');
        $('#edit-user input[name="account"]').val(account.account);
        $('#edit-user input[name="name"]').val(account.name);
        $('#edit-user select[name="company"]').val(account.company);
        $('#edit-user input[name="role"]').val(account.role);
        $('#edit-user input[name="mobile"]').val(account.mobile);
        $('#edit-user input[name="telephone"]').val(account.telephone);
        $('#edit-user input[name="id"]').val(account.id);
        $('#edit-user input[name="account_group"]').val(account.account_group);
        $('#edit-user input[class="account-check"]').val(account.account);
        $('#edit-user input[data-mobile="auth-mobile"]').val(account.auth_mobile);
        $('#edit-user input[name="mobile"]').attr('readOnly', account.bind === 1);
        if (account.bind === 1) {
            $('#edit-user input[name="mobile"]').siblings('small').show();
        } else {
            $('#edit-user input[name="mobile"]').siblings('small').hide();
        }
        $('#edit-password input[name="account"]').val(account.account);
        $('#edit-password input[class="account-check"]').val(account.account);
        $('#edit-password input[name="id"]').val(account.id);
        $('#edit-password input[name="reset_password"]').val('');
    });

    // 选择单位自动配置账号组
    $('select[name="company"]').change(function () {
        const company = $(this).val();
        const oneUnit = _.find(unitList, { name: company });
        $(this).siblings('input[name="account_group"]').val(oneUnit ? oneUnit.type : 7);
    });

    // 分配随机密码
    $("#rand-password").click(function() {
        const password = randPassword();
        $(this).parent().parent().find('input').val(password);
    });

    // 分配随机密码
    $("#rand-password2").click(function() {
        const password = randPassword();
        $(this).parent().parent().find('input').val(password);
    });

    // 重置密码
    let isChange = false;
    $("#reset-password-btn").click(function() {
        try {
            if (isChange) {
                throw '稍后再操作';
            }
            const resetPassword = $("#reset-password").val();
            const id = $("#user-id").val();
            if (resetPassword.length < 6) {
                throw '密码长度不能小于6';
            }
            if (!/^[0-9a-zA-Z*~!@&%$^\\(\\)#_\[\]\-\+={}|?'":,<>.`]+$/.test(resetPassword)) {
                throw '密码只支持英文数字及符号';
            }
            // 判断新密码的强度
            const reg = /^(?![0-9]+$)(?![a-zA-Z]+$).{6,16}$/;
            if (!reg.test(resetPassword)) {
                throw '请设置至少包含数字和字母的密码';
            }
            const btn = $(this);
            $.ajax({
                url: '/setting/user/reset/password',
                type: 'post',
                data: { id: id, reset_password: resetPassword },
                dataType: 'json',
                error: function() {
                    isChange = false;
                    btn.html('重置密码');
                    throw '网络错误!';
                },
                beforeSend: function(xhr) {
                    let csrfToken = Cookies.get('csrfToken_j');
                    xhr.setRequestHeader('x-csrf-token', csrfToken);
                    isChange = true;
                    btn.html('<i class="fa fa-spinner fa-pulse"></i>');
                },
                success: function(response) {
                    isChange = false;
                    btn.html('重置密码');
                    if (response.err !== 0) {
                        throw response.msg;
                    }
                    $("#reset-password").val('');
                    toastr.success('重置成功');
                }
            });
        } catch (error) {
            toastr.error(error);
            console.log(error);
        }
    });

    // 账号查重
    $('input[name="account"]').on('blur', function () {
        const self = $(this);
        if (self.val() !== self.siblings('input').val()) {
            const data = {account: $(this).val()};
            postData('/setting/user/exist', data, function (data) {
                if (data === null) {
                    self.removeClass('is-invalid');
                } else {
                    self.addClass('is-invalid');
                }
            })
        } else {
            self.removeClass('is-invalid');
        }
    });

    // 选中创建标段才可以选择协作办公
    $('a[aria-controls="edit-user2"]').on('click', function () {
        $('#edit-user2 input:radio').prop('checked', false);
        $('#edit-user2 input:checkbox').prop('checked', false);
        const account = $(this).data('account');
        $('#edit-user2 input[name="id"]').val(account.id);
        // 权限赋值
        if (account.permission !== '') {
            const permission = JSON.parse(account.permission);
            for (const pm in permission) {
                if (pm === 'tender' && permission[pm].indexOf('1') !== -1) {
                    $('#edit-user2 input[name="cooperation"]').attr('disabled', false);
                } else {
                    $('#edit-user2 input[name="cooperation"]').attr('disabled', true);
                }
                if (pm === 'tender' && permission[pm].indexOf('5') !== -1) {
                    $('#edit-user2 input:checkbox[id="change_1"]').prop('checked', true);
                }
                if (pm === 'tender' && permission[pm].indexOf('4') !== -1) {
                    $('#edit-user2 input:checkbox[id="material_1"]').prop('checked', true);
                }
                if (allPermission[pm].type === 'checkbox') {
                    for (const index of permission[pm]) {
                        $('#edit-user2 input:checkbox[id="' + pm + '_' + index + '"]').prop('checked', true);
                    }
                } else if (allPermission[pm].type === 'radio') {
                    $('#edit-user2 input:radio[id="' + pm + '_' + permission[pm] + '"]').prop('checked', true);
                }
            }
        }
        // 协作赋值
        $('#edit-user2 input:radio[name="cooperation"][value="' + account.cooperation + '"]').prop('checked', true);
        // 微信通知赋值
        if (account.notice_again) {
            const noticeAgain = JSON.parse(account.notice_again);
            $('#again_all').prop('checked', noticeAgain.checked);
            for (const sp in noticeAgainConst.sp) {
                $('#again_' + sp).prop('checked', noticeAgain.sp[sp] !== undefined ? noticeAgain.sp[sp] : false);
            }
        }
    });

    // 选择创建标段功能后可选协作办公
    $('#edit-user2 input:checkbox').click(function () {
        if ($(this).attr('id') === 'tender_1') {
            if ($(this).is(':checked')) {
                $('#edit-user2 input[name="cooperation"]').attr('disabled', false);
            } else {
                $('#edit-user2 input[name="cooperation"]').attr('disabled', true);
            }
        }
    });

    // 解绑第三方平台
    $('.unlink-user').on('click', function () {
        const id = $(this).data('account');
        const accountData = _.find(accountList, { id });
        console.log(accountData);
        $('#bind_account').text(accountData.name + ' ' + accountData.mobile);
        $('#account_id').val(id);
    })

    // 设置显示默认
    $('body').on('click', '#set-default', function () {
        const attid = $(this).data('attid');
        const data = {id: attid};
        postData('/setting/show/update', data, function (result) {
           let html = ''
            result.forEach((item, idx) => {
                html += `<li class="list-group-item">${item.label_name}`
                html+= item.is_default ? `<span class="pull-right">默认</span></li>`:`<a href="javascript:void(0)" id="set-default" class="btn btn-primary btn-sm pull-right" data-attid="${idx}">设为默认</a></li>`
            })
            // <li class="list-group-item">
            // 标段列表<a href="#" class="btn btn-primary btn-sm pull-right">设为默认</a>
            // </li>
            // <li class="list-group-item">金额概况<span class="pull-right">默认</span></li>
            // <li class="list-group-item">
            //     计量进度<a href="#" class="btn btn-primary btn-sm pull-right">设为默认</a>
            // </li>
            $('#tenderList').empty()
            $('#tenderList').append(html)
            const item = result.find((i, idx) => idx=== attid)
            $('#nav_tender').attr('href', item.path)
        });
    });
    // 设置页显示数目
    $('.nav-tabs .nav-link').each(function () {
        const pageSize = getLocalCache('account-pageSize') ? getLocalCache('account-pageSize') : '';
        if (getLocalCache('account-pageSize') && $(this).attr('href').indexOf('pageSize') === -1 && $(this).attr('href').indexOf('unit') === -1) {
            $(this).attr('href', $(this).attr('href') + '?pageSize=' + getLocalCache('account-pageSize'));
        }
    });
    // 设置页显示数目
    $('#user-list .list-group-item').each(function (k,v) {
        const pageSize = getLocalCache('account-pageSize') ? getLocalCache('account-pageSize') : '';
        if (pageSize) {
            $(this).attr('href', $(this).attr('href') + '&pageSize=' + pageSize);
        }
    })

    // 参建单位页切换单位右侧显示
    $('body').on('click', '#unit_list tr', function () {
        const id = parseInt($(this).data('id'));
        $(this).siblings('tr').removeClass('table-warning');
        $(this).addClass('table-warning');
        setUnitRightHtml(id);
    });

    // 参建单位编辑
    // 回车提交
    $('#one_unit input').on('keypress', function () {
        if(window.event.keyCode === 13) {
            $(this).blur();
        }
    });

    $('#one_unit input').blur(function () {
        const val_name = $(this).data('name');
        let val = _.trim($(this).val()) !== '' ? _.trim($(this).val()) : null;
        if (!oneUnit) {
            toastr.error('所选单位有误，请重新选择');
            return false;
        }
        switch(val_name) {
            case 'name':
                if(val && val.length > 100) {
                    toastr.error('单位名称超过100个字，请缩减名称');
                    $(this).val(oneUnit[val_name]);
                    return false;
                }
                const tongming = _.find(unitList, { name: val });
                if (tongming && tongming.id !== oneUnit.id) {
                    toastr.error('单位名称不能重复');
                    $(this).val(oneUnit[val_name]);
                    return false;
                }
                break;
            default:
                if(val && val.length > 255) {
                    toastr.error('超出字段范围，请缩减');
                    $(this).val(oneUnit[val_name]);
                    return false;
                }
                break;
        }
        if(oneUnit[val_name] !== val) {
            const _self = $(this);
            postData('/setting/user/unit/save', { type: 'update', id: oneUnit.id, val_name, val}, function (result) {
                oneUnit[val_name] = val;
                _self.val(oneUnit[val_name]);
                if (val_name === 'name') {
                    oneUnit.account_num = result.account_num;
                    $('#unit_list tr[class="table-warning"]').find('a').text(oneUnit[val_name]);
                    $('#unit_list tr[class="table-warning"]').children('td').eq(2).text(result.account_num);
                }
            }, function () {
                _self.val(oneUnit[val_name]);
            })
        } else {
            $(this).val(oneUnit[val_name]);
        }
    });

    $('#one_unit textarea').blur(function () {
        const val_name = $(this).data('name');
        let val = _.trim($(this).val()) !== '' ? _.trim($(this).val()) : null;
        if (!oneUnit) {
            toastr.error('所选单位有误，请重新选择');
            return false;
        }
        if(oneUnit[val_name] !== val) {
            const _self = $(this);
            postData('/setting/user/unit/save', { type: 'update', id: oneUnit.id, val_name, val}, function (result) {
                oneUnit[val_name] = val;
                _self.val(oneUnit[val_name]);
                $('#unit_list tr[class="table-warning"]').children('td').eq(4).text(oneUnit[val_name]);
            }, function () {
                _self.val(oneUnit[val_name]);
            })
        } else {
            $(this).val(oneUnit[val_name]);
        }
    });

    $('#one_unit select').change(function () {
        const val_name = $(this).attr('data-name');
        let val = _.trim($(this).val()) !== '' ? _.trim($(this).val()) : null;
        if (!oneUnit) {
            toastr.error('所选单位有误，请重新选择');
            return false;
        }
        if(oneUnit[val_name] !== val) {
            const _self = $(this);
            postData('/setting/user/unit/save', { type: 'update', id: oneUnit.id, name: oneUnit.name, val_name, val}, function (result) {
                oneUnit[val_name] = val;
                _self.val(oneUnit[val_name]);
                $('#unit_list tr[class="table-warning"]').children('td').eq(3).text(accountGroup[parseInt(oneUnit[val_name])]);
            }, function () {
                _self.val(oneUnit[val_name]);
            })
        } else {
            $(this).val(oneUnit[val_name]);
        }
    });

    // 删除单位弹窗
    $('#del-modal-btn').click(function () {
        if (!oneUnit) {
            toastr.error('所选单位有误，请重新选择');
            return false;
        }
        if (oneUnit.account_num === 0) {
            $('.del-btn').show();
            $('.not-del-btn').hide();
        } else {
            $('.del-btn').hide();
            $('.not-del-btn').show();
        }
    });

    // 删除单位
    $('#delete-unit').click(function () {
        if (!oneUnit) {
            toastr.error('所选单位有误，请重新选择');
            return false;
        }
        postData('/setting/user/unit/save', { type: 'delete', name: oneUnit.name, id: oneUnit.id }, function (result) {
            window.location.href = '/setting/user/unit';
        })
    });

    // 上传签章
    $('#sign-upload').change(function () {
        if (!oneUnit) {
            toastr.error('所选单位有误，请重新选择');
            return false;
        }
        const file = this.files[0];
        const ext = file.name.toLowerCase().split('.').splice(-1)[0];
        const imgStr = /(jpg|jpeg|png|bmp|BMP|JPG|PNG|JPEG)$/;
        if (!imgStr.test(ext)) {
            toastr.error('请上传正确的图片格式文件');
            return
        }
        if ($(this).val()) {
            const formData = new FormData();
            formData.append('file', this.files[0]);
            formData.append('id', oneUnit.id);
            postDataWithFile('/setting/user/unit/upload', formData, function (result) {
                const html = '<img src="'+ fujianOssPath + result.sign_path +'" width="120">';
                $('#sign-show').html(html);
                $('#sign-upload').val('');
                oneUnit.sign_path = result.sign_path;
                $('#upload-sign').hide();
                $('#delete-sign').show();
                toastr.success('上传成功');
            });
        }
    });

    // 移除签章
    $('#delete-sign').click(function () {
        if (!oneUnit) {
            toastr.error('所选单位有误，请重新选择');
            return false;
        }
        postData('/setting/user/unit/save', { type: 'del-sign', id: oneUnit.id }, function (result) {
            $('#sign-show').html('');
            toastr.warning('已移除');
            oneUnit.sign_path = null;
            $('#upload-sign').show();
            $('#delete-sign').hide();
        })
    });

    // 导入账号功能
    let importFile = null;
    $('#upload-xls-file').change(function () {
        const file = this.files[0];
        importFile = file;
    });

    $('#import-bills-btn').click(function() {
        if (!importFile) {
            toastr.error('请选择excel文件再确定');
            return;
        }
        const ext = importFile.name.toLowerCase().split('.').splice(-1)[0];
        const imgStr = /(xls|xlsx|XLS|XLSX)$/;
        if (!imgStr.test(ext)) {
            toastr.error('请导入正确格式的excel文件。');
            return
        }
        const fileReader = new FileReader();
        fileReader.onload = async function(ev) {
            try{
                const data = ev.target.result;
                const tree = [];
                const includeSpec = $('#xls-spec').is(':checked');
                if (/(xls|xlsx|XLS|XLSX)$/.test(ext)) {
                    const workbook = XLSX.read(data, {type: 'binary'}); // 以二进制流方式读取得到整份excel表格对象
                    const jsonData = transExcel(XLSX.utils.sheet_to_json(workbook.Sheets[workbook.SheetNames[0]], { defval: null }));
                    console.log(jsonData);
                    // 判断新密码的强度
                    const reg = /^(?![0-9]+$)(?![a-zA-Z]+$).{6,16}$/;
                    for (const j of jsonData) {
                        if (j.account === undefined || j.account === null || j.password === undefined || j.password === null ||
                            j.name === undefined || j.name === null || j.company === undefined || j.company === null ||
                            j.role === undefined || j.role === null || j.mobile === undefined || j.telephone === undefined) {
                            continue;
                        }
                        if (!reg.test(j.password)) {
                            continue;
                        }
                        tree.push(j);
                        // if (_.findIndex(tree, function (o) { return o.account === j.account; }) === -1) {
                        //     tree.push(j);
                        // }
                    }
                }
                console.log(tree);
                if (tree.length === 0) {
                    toastr.error('导入数据为空，请检查excel是否符合模版要求。');
                    return
                }
                postData('/setting/user/unit/save', { type: 'import-users', users: tree }, function (result) {
                    if (result.insertNum > 0) {
                        toastr.success('成功导入了' + result.insertNum + '个账号');
                        if (result.overMax) {
                            toastr.warning('添加账号个数受限，部分账号无法导入，请去后台开放限制。');
                        }
                        setTimeout(function () {
                            window.location.reload();
                        }, 1500);
                    } else if (result.insertNum === 0 && !result.overMax) {
                        toastr.error('未能导入任何账号，请检查账号、公司是否已存在或excel是否符合模版要求。');
                    } else if (result.insertNum === 0 && result.overMax) {
                        toastr.warning('添加账号个数受限，账号无法导入，请去后台开放限制。');
                    }
                })
            } catch (error) {
                console.log(error);
                toastr.error(error);
                return
            }
        };

        // 以二进制方式打开文件
        fileReader.readAsBinaryString(importFile);
        $('#upload-xls-file').val('');
        importFile = null;
    });

    function transExcel(results) {
        const mapInfo = {
            '登录账号': 'account',
            '登录密码': 'password',
            '姓名': 'name',
            '单位名称': 'company',
            '职位': 'role',
            '手机': 'mobile',
            '电话': 'telephone',
        };
        return results.map(zhObj => {
            const enObj = {}
            const zhKeys = Object.keys(zhObj);

            zhKeys.forEach(zhKey => {
                const enKey = mapInfo[zhKey];

                enObj[enKey] = zhObj[zhKey] && _.isString(zhObj[zhKey]) ? _.trim(zhObj[zhKey]) : zhObj[zhKey];
            });

            return enObj
        })
    }
});

function checkPasswordForm() {
    try {
        if ($('#edit-password input[name="account"]').val() == '' || $('#edit-password input[name="account"]').hasClass('is-invalid')) {
            throw '账号不能为空或已存在';
        }
        const resetPassword = $('#edit-password input[name="reset_password"]').val();
        if (resetPassword.length < 6) {
            throw '密码长度不能小于6';
        }
        if (!/^[0-9a-zA-Z*~!@&%$^\\(\\)#_\[\]\-\+={}|?'":,<>.`]+$/.test(resetPassword)) {
            throw '密码只支持英文数字及符号';
        }
        // 判断新密码的强度
        const reg = /^(?![0-9]+$)(?![a-zA-Z]+$).{6,16}$/;
        if (!reg.test(resetPassword)) {
            throw '请设置至少包含数字和字母的密码';
        }
    } catch (err) {
        toastr.error(err);
        return false;
    }
}

function setUnitRightHtml(id) {
    const one = _.find(unitList, { id });
    if (one) {
        $('#unit_name').val(one.name);
        $('#unit_corporation').val(one.corporation);
        $('#unit_credit_code').val(one.credit_code);
        $('#unit_tel').val(one.tel);
        $('#unit_website').val(one.website);
        $('#unit_region').val(one.region);
        $('#unit_address').val(one.address);
        $('#unit_basic').val(one.basic);
        $('#unit_type').val(one.type);
        if(one.sign_path) {
            $('#sign-show').html('<img src="' + fujianOssPath + one.sign_path + '" width="120">');
            $('#delete-sign').show();
            $('#upload-sign').hide();
        } else {
            $('#sign-show').html('');
            $('#delete-sign').hide();
            $('#upload-sign').show();
        }
        oneUnit = one;
        $('#add_user_company').val(one.name);
    }
}

/**
 * 表单检测
 */
function checkUserForm(status) {
    try {
        if (status === 'add') {
            if ($('#add-user input[name="account_group"]').val() == 0) {
                throw '请选择账号组';
            }
            if ($('#add-user input[name="account"]').val() == '' || $('#add-user input[name="account"]').hasClass('is-invalid')) {
                throw '账号不能为空或已存在';
            }
            if ($('#add-user input[name="password"]').val() == '' || $('#add-user input[name="password"]').val().length < 6) {
                throw '密码不能为空或不能小于6位';
            }
            if (!/^[0-9a-zA-Z*~!@&%$^\\(\\)#_\[\]\-\+={}|?'":,<>.`]+$/.test($('#add-user input[name="password"]').val())) {
                throw '密码只支持英文数字及符号';
            }
            // 判断新密码的强度
            const reg = /^(?![0-9]+$)(?![a-zA-Z]+$).{6,16}$/;
            if (!reg.test($('#add-user input[name="password"]').val())) {
                throw '请设置至少包含数字和字母的密码';
            }
            if ($('#add-user input[name="name"]').val() == '') {
                throw '姓名不能为空';
            }
            if (_.findIndex(unitList, { name: $('#add-user select[name="company"]').val() }) === -1) {
                throw '请选择单位名称';
            }
            if ($('#add-user input[name="role"]').val() == '') {
                throw '职位名称不能为空';
            }
            $('#add-user input[name="account"]').val(trimInvalidChar($('#add-user input[name="account"]').val()));
            $('#add-user input[name="name"]').val(trimInvalidChar($('#add-user input[name="name"]').val()));
            // $('#add-user input[name="company"]').val(trimInvalidChar($('#add-user input[name="company"]').val()));
            $('#add-user input[name="role"]').val(trimInvalidChar($('#add-user input[name="role"]').val()));
            $('#add-user input[name="telephone"]').val(trimInvalidChar($('#add-user input[name="telephone"]').val()));
        } else {
            if ($('#edit-user input[name="account_group"]').val() == 0) {
                throw '请选择账号组';
            }
            if ($('#edit-user input[name="account"]').val() == '' || $('#add-user input[name="account"]').hasClass('is-invalid')) {
                throw '账号不能为空或已存在';
            }
            if ($('#edit-user input[name="name"]').val() == '') {
                throw '姓名不能为空';
            }
            if (_.findIndex(unitList, { name: $('#edit-user select[name="company"]').val() }) === -1) {
                throw '请选择单位名称';
            }
            if ($('#edit-user input[name="role"]').val() == '') {
                throw '职位名称不能为空';
            }
            $('#edit-user input[name="account"]').val(trimInvalidChar($('#edit-user input[name="account"]').val()));
            $('#edit-user input[name="name"]').val(trimInvalidChar($('#edit-user input[name="name"]').val()));
            // $('#edit-user input[name="company"]').val(trimInvalidChar($('#edit-user input[name="company"]').val()));
            $('#edit-user input[name="role"]').val(trimInvalidChar($('#edit-user input[name="role"]').val()));
            $('#edit-user input[name="telephone"]').val(trimInvalidChar($('#edit-user input[name="telephone"]').val()));
        }
    } catch (err) {
        toastr.error(err);
        return false;
    }
}

/**
 * 表单检测
 */
function checkUnitForm() {
    try {
        if ($('#add-company input[name="name"]').val() == '') {
            throw '单位名称不能为空';
        }
        if ($('#add-company select[name="type"]').val() == 0) {
            throw '请选择类型';
        }
        // 检测同名
        if (_.findIndex(unitList, { name: $('#add-company input[name="name"]').val() }) !== -1) {
            throw '已存在对应的单位名称';
        }
    } catch (err) {
        toastr.error(err);
        return false;
    }
}

/**
 * 随机密码(必须包含数字和字母)
 */
function randPassword() {
    const result = [];
    // 随机6-10位
    const length = Math.ceil(Math.random() * 2 + 6);
    let numberSeed = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
    let stringSeed = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
        'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
        'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
    const numRan = numberSeed[Math.floor((Math.random() * numberSeed.length))];
    const strRan = stringSeed[Math.floor((Math.random() * stringSeed.length))];
    const randSeed = stringSeed.concat(numberSeed);
    const seedLength = randSeed.length - 1;
    for (let i = 0; i < length; i++) {
        const index = Math.ceil(Math.random() * seedLength);
        result.push(randSeed[index]);
    }
    result.splice(Math.floor((Math.random() * result.length)), 0, numRan);
    result.splice(Math.floor((Math.random() * result.length)), 0, strRan);
    return result.join('');
}