update webdav secret

add WEBDAV_SECRET_MIN_LENGTH and WEBDAV_SECRET_STRENGTH_LEVEL

frontend/src/components/dialog/update-webdav-password.js

@@ -1,7 +1,9 @@
 import React, { Component } from 'react';
 import PropTypes from 'prop-types';
-import { Modal, ModalHeader, ModalBody, ModalFooter, Button, Input, InputGroup, InputGroupAddon } from 'reactstrap';
+import { Modal, ModalHeader, ModalBody, ModalFooter, Alert, Button, Input, InputGroup, InputGroupAddon } from 'reactstrap';
 import { gettext } from '../../utils/constants';
+import { Utils } from '../../utils/utils';
+const { webdavSecretMinLength, webdavSecretStrengthLevel } = window.app.pageOptions;
 
 const propTypes = {
   password: PropTypes.string.isRequired,
@@ -14,6 +16,7 @@ class UpdateWebdavPassword extends Component {
   constructor(props) {
     super(props);
     this.state = {
+      errorInfo: '',
       password: this.props.password,
       isPasswordVisible: false,
       btnDisabled: false
@@ -21,9 +24,25 @@ class UpdateWebdavPassword extends Component {
   }
 
   submit = () => {
+
+    if (this.state.password.length === 0) {
+      this.setState({errorInfo: 'Please enter password'});
+      return false;
+    }
+    if (this.state.password.length < webdavSecretMinLength) {
+      this.setState({errorInfo: 'Password is too short'});
+      return false;
+    }
+
+    if (Utils.getStrengthLevel(this.state.password) < webdavSecretStrengthLevel) {
+      this.setState({errorInfo: gettext('Password is too weak, should have at least {webdavSecretStrengthLevel} of the following: num, upper letter, lower letter and other symbols'.replace('{webdavSecretStrengthLevel}', webdavSecretStrengthLevel))});
+      return false;
+    }
+
     this.setState({
       btnDisabled: true
     });
+
     this.props.updatePassword(this.state.password);
   }
 
@@ -39,11 +58,7 @@ class UpdateWebdavPassword extends Component {
   }
 
   generatePassword = () => {
-    let randomPassword = '';
-    const possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-    for (let i = 0; i < 8; i++) {
-      randomPassword += possible.charAt(Math.floor(Math.random() * possible.length));
-    }
+    let randomPassword = Utils.generatePassword(webdavSecretMinLength);
     this.setState({
       password: randomPassword,
       isPasswordVisible: true
@@ -52,9 +67,13 @@ class UpdateWebdavPassword extends Component {
 
   render() {
     const { toggle } = this.props;
+    let passwordLengthTip = gettext('(at least {passwordLength} characters and has {shareLinkPasswordStrengthLevel} of the following: num, upper letter, lower letter and other symbols)');
+    passwordLengthTip = passwordLengthTip.replace('{passwordLength}', webdavSecretMinLength)
+                                         .replace('{shareLinkPasswordStrengthLevel}', webdavSecretStrengthLevel);
     return (
       <Modal centered={true} isOpen={true} toggle={toggle}>
         <ModalHeader toggle={toggle}>{gettext('WebDav Password')}</ModalHeader>
+        <span className="tip">{passwordLengthTip}</span>
         <ModalBody>
           <InputGroup className="">
             <Input type={this.state.isPasswordVisible ? 'text' : 'password'} value={this.state.password} onChange={this.handleInputChange} autoComplete="new-password"/>
@@ -65,6 +84,7 @@ class UpdateWebdavPassword extends Component {
           </InputGroup>
         </ModalBody>
         <ModalFooter>
+          {this.state.errorInfo && <Alert color="danger" className="mt-2">{gettext(this.state.errorInfo)}</Alert>}
           <Button color="secondary" onClick={toggle}>{gettext('Cancel')}</Button>
           <Button color="primary" onClick={this.submit} disabled={this.state.btnDisabled}>{gettext('Submit')}</Button>
         </ModalFooter>