From 12184a5ef570593ab492c1499f2d7a23e3be2569 Mon Sep 17 00:00:00 2001
From: zirops <zirops@gmail.com>
Date: Tue, 26 Jan 2021 10:57:25 +0100
Subject: user self registration

---
 modern/src/LoginPage.js      |  29 +++++++++++-
 modern/src/RegisterDialog.js | 109 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 136 insertions(+), 2 deletions(-)
 create mode 100644 modern/src/RegisterDialog.js

diff --git a/modern/src/LoginPage.js b/modern/src/LoginPage.js
index 2636c80..cbe50fe 100644
--- a/modern/src/LoginPage.js
+++ b/modern/src/LoginPage.js
@@ -7,6 +7,9 @@ import FormControl from '@material-ui/core/FormControl';
 import Paper from '@material-ui/core/Paper';
 import { makeStyles } from '@material-ui/core';
 import TextField from '@material-ui/core/TextField';
+import RegisterDialog from './RegisterDialog';
+import Snackbar from '@material-ui/core/Snackbar';
+import { useSelector } from 'react-redux';
 
 import t from './common/localization';
 
@@ -47,10 +50,19 @@ const LoginPage = () => {
   const [failed, setFailed] = useState(false);
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
+  const [registerDialogShown, setRegisterDialogShown] = useState(false);
+  const [snackbarOpen, setSnackbarOpen] = useState(false);
 
   const classes = useStyles();
   const history = useHistory();
 
+  const server = useSelector(state => state.session.server);
+
+  let registrationPref = false;
+  if (server) {
+    registrationPref = server['registration']
+  }
+
   const handleEmailChange = (event) => {
     setEmail(event.target.value);
   }
@@ -60,7 +72,14 @@ const LoginPage = () => {
   }
 
   const handleRegister = () => {
-    // TODO: Implement registration
+    setRegisterDialogShown(true);
+  }
+
+  const handleRegisterResult = (resultOk) => {
+    setRegisterDialogShown(false);
+    if (resultOk) {
+      setSnackbarOpen(true);
+    }
   }
 
   const handleLogin = async (event) => {
@@ -109,7 +128,7 @@ const LoginPage = () => {
 
           <FormControl fullWidth margin='normal'>
             <div className={classes.buttons}>
-              <Button type='button' variant='contained' disabled onClick={handleRegister}>
+              <Button type='button' variant='contained' onClick={handleRegister} disabled={!registrationPref}>
                 {t('loginRegister')}
               </Button>
               <Button type='submit' variant='contained' color='primary' disabled={!email || !password}>
@@ -118,6 +137,12 @@ const LoginPage = () => {
             </div>
           </FormControl>
         </form>
+        {registerDialogShown && <RegisterDialog open={registerDialogShown} onResult={handleRegisterResult} />}
+        <Snackbar
+          anchorOrigin={{ vertical: 'bottom', horizontal: 'center', }}
+          open={snackbarOpen} autoHideDuration={6000}
+          onClose={()=>{setSnackbarOpen(false);}} message={t('loginCreated')}
+        />
       </Paper>
     </main>
   );
diff --git a/modern/src/RegisterDialog.js b/modern/src/RegisterDialog.js
new file mode 100644
index 0000000..ecd07ac
--- /dev/null
+++ b/modern/src/RegisterDialog.js
@@ -0,0 +1,109 @@
+import t from './common/localization'
+import React, { useState } from 'react';
+import Button from '@material-ui/core/Button';
+import Dialog from '@material-ui/core/Dialog';
+import DialogActions from '@material-ui/core/DialogActions';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogContentText from '@material-ui/core/DialogContentText';
+import TextField from '@material-ui/core/TextField';
+import Alert from '@material-ui/lab/Alert';
+
+const RegisterDialog = ({ open, onResult }) => {
+  const [formFields, setFormFields] = useState({});
+  const [validationErrors, setValidationErrors] = useState({});
+  const [errorResponse, setErrorResponse] = useState(null);
+
+  const handleChange = (event) => {
+    setFormFields({ ...formFields, [event.target.name]: event.target.value });
+    setValidationErrors({ ...validationErrors, [event.target.name]: false });
+  }
+
+  const handleRegister = async (event) => {
+    event.preventDefault();
+    setErrorResponse(null);
+    let objErrors = {};
+    if (formFields.name.trim() === '') {
+      objErrors.name = true;
+    }
+    if (!
+      /^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/.test(formFields.email)) {
+      objErrors.email = true;
+    }
+    if (formFields.password.trim() === '') {
+      objErrors.password = true;
+    }
+    if (Object.keys(objErrors).length !== 0) {
+      setValidationErrors(objErrors);
+      return;
+    }
+
+    const response = await fetch('/api/users', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(formFields)
+    });
+
+    if (response.ok) {
+      onResult(true)
+    } else {
+      setErrorResponse(t('errorGeneral'));
+    }
+  }
+
+  return (
+    <Dialog
+      open={open}
+      onClose={() => { onResult(false) }}>
+      <DialogContent>
+        <DialogContentText>{t('loginRegister')}</DialogContentText>
+
+        {errorResponse && <Alert severity="error">{errorResponse}</Alert>}
+
+        <TextField
+          margin='normal'
+          required
+          fullWidth
+          error={validationErrors.name}
+          label={t('sharedName')}
+          name='name'
+          value={formFields.name || ''}
+          autoComplete='name'
+          autoFocus
+          onChange={handleChange}
+          helperText={validationErrors.name && 'Name is required'} />
+
+        <TextField
+          margin='normal'
+          required
+          fullWidth
+          error={validationErrors.email}
+          label={t('userEmail')}
+          name='email'
+          value={formFields.email || ''}
+          autoComplete='email'
+          onChange={handleChange}
+          helperText={validationErrors.email && 'Invalid e-mail'} />
+
+        <TextField
+          margin='normal'
+          required
+          fullWidth
+          error={validationErrors.password}
+          label={t('userPassword')}
+          name='password'
+          value={formFields.password || ''}
+          type='password'
+          autoComplete='current-password'
+          onChange={handleChange}
+          helperText={validationErrors.password && 'Password is required'} />
+
+      </DialogContent>
+      <DialogActions>
+        <Button color="primary" onClick={handleRegister} disabled={!formFields.name || !formFields.email || !formFields.password}>{t('loginRegister')}</Button>
+        <Button autoFocus onClick={() => onResult(false)}>{t('sharedCancel')}</Button>
+      </DialogActions>
+    </Dialog>
+  );
+};
+
+export default RegisterDialog;
-- 
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