update where no duplicate username and email can be created

Sean/server.js

@@ -207,20 +207,42 @@ app.post('/createUser', (req, res) => {
       return res.status(400).json({ error: 'Password does not meet complexity requirements' });
     }
 
+    // Check if the username is already taken
+    const checkUsernameQuery = 'SELECT * FROM users WHERE username = ?';
+    mysqlConnection.query(checkUsernameQuery, [username], (usernameQueryErr, usernameResults) => {
+      if (usernameQueryErr) {
+        console.error('Error checking username:', usernameQueryErr);
+        return res.status(500).json({ error: 'Internal Server Error' });
+      }
+
+      if (usernameResults.length > 0) {
+        return res.status(400).json({ error: 'Username is already taken', message: 'Username is already taken. Please choose a different username.' });
+      }
+
+      // Check if the email is already taken
+      const checkEmailQuery = 'SELECT * FROM users WHERE email = ?';
+      mysqlConnection.query(checkEmailQuery, [email], (emailQueryErr, emailResults) => {
+        if (emailQueryErr) {
+          console.error('Error checking email:', emailQueryErr);
+          return res.status(500).json({ error: 'Internal Server Error' });
+        }
+
+        if (emailResults.length > 0) {
+          return res.status(400).json({ error: 'Email is already in use', message: 'Email is already in use. Please choose another email.' });
+        }
+
         // Hash the password before storing it in the database
         bcrypt.hash(password, 10, (hashError, hashedPassword) => {
           if (hashError) {
             console.error('Error hashing password:', hashError);
-        res.status(500).json({ error: 'Internal Server Error' });
+            return res.status(500).json({ error: 'Internal Server Error' });
-        return;
           }
 
           // Start a transaction
           mysqlConnection.beginTransaction((transactionErr) => {
             if (transactionErr) {
               console.error('Error starting transaction:', transactionErr);
-          res.status(500).json({ error: 'Internal Server Error' });
+              return res.status(500).json({ error: 'Internal Server Error' });
-          return;
             }
 
             // Define the insert query
@@ -240,7 +262,7 @@ app.post('/createUser', (req, res) => {
                   if (rollbackErr) {
                     console.error('Error rolling back transaction:', rollbackErr);
                   }
-              res.status(500).json({ error: 'Internal Server Error' });
+                  return res.status(500).json({ error: 'Internal Server Error' });
                 });
                 return;
               }
@@ -249,8 +271,7 @@ app.post('/createUser', (req, res) => {
               mysqlConnection.commit((commitErr) => {
                 if (commitErr) {
                   console.error('Error committing transaction:', commitErr);
-              res.status(500).json({ error: 'Internal Server Error' });
+                  return res.status(500).json({ error: 'Internal Server Error' });
-              return;
                 }
 
                 // Log the results of the query
@@ -262,12 +283,90 @@ app.post('/createUser', (req, res) => {
             });
           });
         });
+      });
+    });
   } catch (error) {
     console.error('Error creating user:', error);
     res.status(500).json({ error: 'Internal Server Error' });
   }
 });
 
+
+
+app.post('/check-username-email', (req, res) => {
+  try {
+    const { username, email } = req.body;
+
+    // Check if the username is already taken
+    const checkUsernameQuery = 'SELECT * FROM users WHERE username = ?';
+    mysqlConnection.query(checkUsernameQuery, [username], (usernameQueryErr, usernameResults) => {
+      if (usernameQueryErr) {
+        console.error('Error checking username:', usernameQueryErr);
+        return res.status(500).json({ error: 'Internal Server Error' });
+      }
+
+      // Check if the email is already taken
+      const checkEmailQuery = 'SELECT * FROM users WHERE email = ?';
+      mysqlConnection.query(checkEmailQuery, [email], (emailQueryErr, emailResults) => {
+        if (emailQueryErr) {
+          console.error('Error checking email:', emailQueryErr);
+          return res.status(500).json({ error: 'Internal Server Error' });
+        }
+
+        if (usernameResults.length === 0 && emailResults.length === 0) {
+          // Both username and email are available
+          return res.status(200).json({ available: true });
+        } else {
+          // Either username or email is already taken
+          return res.status(400).json({ error: 'Username or email already taken' });
+        }
+      });
+    });
+  } catch (error) {
+    console.error('Error checking username and email:', error);
+    res.status(500).json({ error: 'Internal Server Error' });
+  }
+});
+
+
+app.post('/check-username', (req, res) => {
+  const { username } = req.body;
+
+  const checkUsernameQuery = 'SELECT * FROM users WHERE username = ?';
+  mysqlConnection.query(checkUsernameQuery, [username], (error, results) => {
+    if (error) {
+      console.error('Error checking username:', error);
+      res.status(500).json({ error: 'Internal Server Error' });
+    } else {
+      const isAvailable = results.length === 0;
+      res.json({ available: isAvailable });
+    }
+  });
+});
+
+// Assuming you have an instance of express named 'app'
+app.post('/check-email', (req, res) => {
+  const { email } = req.body;
+
+  // Check if the email is already taken in the database
+  const checkEmailQuery = 'SELECT * FROM users WHERE email = ?';
+  mysqlConnection.query(checkEmailQuery, [email], (error, results) => {
+    if (error) {
+      console.error('Error checking email:', error);
+      res.status(500).json({ error: 'Internal Server Error' });
+      return;
+    }
+
+    // If results.length is greater than 0, it means the email is already taken
+    const isEmailAvailable = results.length === 0;
+
+    // Return a JSON response indicating whether the email is available or not
+    res.json({ available: isEmailAvailable });
+  });
+});
+
+
+
 app.get('/forgot-password', (req, res) => {
   res.render('forgot-password'); // Assuming you have an EJS template for this
 });
@@ -449,6 +548,9 @@ async function checkIfUserExists(username) {
     });
   });
 }
+
+
+
 app.use(express.static('views'));
 
 app.listen(PORT, () => {

Sean/views/inusers.ejs

@@ -169,10 +169,12 @@ $(document).ready(function () {
     $('#downloadButtonContainer').show();
   });
 });
+
 $('#downloadButton').on('click', function () {
   // Call the downloadExcel function with the allUsers data
   downloadExcel(allUsers);
 });
+
 function downloadExcel(allUsers) {
   if (allUsers && allUsers.length > 0) {
     const workbook = new ExcelJS.Workbook();
@@ -234,6 +236,102 @@ $('#downloadButton').on('click', function () {
   return true;
 }
 
+
+
+function resetFormFields() {
+        $('#name').val('');
+        $('#username').val('');
+        $('#email').val('');
+        $('#password').val('');
+        $('#confirmPassword').val('');
+        $('#jobTitle').val('');
+      }
+
+
+      $('#userForm').on('submit', function (e) {
+      e.preventDefault();
+
+      const name = $('#name').val();
+      const username = $('#username').val();
+      const email = $('#email').val();
+      const password = $('#password').val();
+      const confirmPassword = $('#confirmPassword').val();
+      const jobTitle = $('#jobTitle').val();
+
+      if (password !== confirmPassword) {
+        alert('Passwords do not match. Please enter the same password in both fields.');
+        return;
+      }
+
+      if (!isStrongPassword(password)) {
+        alert('Password does not meet complexity requirements. It must be at least 10 characters long and include at least one uppercase letter, one lowercase letter, one digit, and one symbol.');
+        return;
+      }
+
+      fetch('/createUser', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          name: name,
+          username: username,
+          email: email,
+          password: password,
+          jobTitle: jobTitle,
+        }),
+      })
+        .then(response => {
+          if (response.status === 201) {
+            // Status 201 indicates successful creation
+            return response.json();
+          } else {
+            return response.json().then(data => {
+              throw new Error(data.error || `HTTP error! Status: ${response.status}`);
+            });
+          }
+        })
+        .then(data => {
+          console.log('User registration success:', data);
+          alert('User registered successfully!');
+          resetFormFields();
+        })
+        .catch(error => {
+          console.error('User registration error:', error);
+          handleRegistrationError(error);
+        });
+    });
+
+function handleRegistrationError(error) {
+  console.error('Registration error:', error); // Log the full error object for debugging
+
+  let errorMessage;
+
+  if (typeof error === 'string') {
+    errorMessage = error;
+  } else if (error instanceof Error) {
+    errorMessage = error.message;
+  } else if (error.response && error.response.data && error.response.data.error) {
+    errorMessage = error.response.data.error;
+  } else {
+    errorMessage = 'Unknown error';
+  }
+
+  if (errorMessage.includes('Username is already taken')) {
+    alert('Username is already taken. Please choose a different username.');
+  } else if (errorMessage.includes('Email is already in use')) {
+    alert('Email is already in use. Please choose a different email.');
+  } else if (errorMessage.includes('Password does not meet complexity requirements')) {
+    alert('Password does not meet complexity requirements. It must be at least 10 characters long and include at least one uppercase letter, one lowercase letter, one digit, and one symbol.');
+  } else if (errorMessage.includes('User registration failed')) {
+    alert('User registration failed. Please try again.');
+  } else {
+    alert(`Unknown error: ${errorMessage}`);
+  }
+}
+
+
+
 $('#resetPasswordForm').on('submit', function (e) {
   e.preventDefault();
 
@@ -247,13 +345,13 @@ $('#downloadButton').on('click', function () {
 
   // Validate passwords
   if (password !== confirmPassword) {
-        alert('Passwords do not match. Please enter the same password in both fields.');
+    alert('Error: Passwords do not match. Please enter the same password in both fields.');
     return;
   }
 
   // Check if the new password meets complexity requirements
   if (!isStrongPassword(password)) {
-        alert('Password does not meet complexity requirements. It must be at least 10 characters long and include at least one uppercase letter, one lowercase letter, one digit, and one symbol.');
+    alert('Error: Password does not meet complexity requirements. It must be at least 10 characters long and include at least one uppercase letter, one lowercase letter, one digit, and one symbol.');
     return;
   }
 
@@ -271,7 +369,9 @@ $('#downloadButton').on('click', function () {
     })
     .then(response => {
       if (!response.ok) {
-                throw new Error(`HTTP error! Status: ${response.status}`);
+        return response.text().then(errorText => {
+          throw new Error(`HTTP error! Status: ${response.status}, Error: ${errorText}`);
+        });
       }
       return response.json();
     })
@@ -292,7 +392,7 @@ $('#downloadButton').on('click', function () {
     .catch(error => {
       // Handle 404 error separately to show an alert
       if (error.message.includes('HTTP error! Status: 404')) {
-                alert('User not found. Please enter a valid username.');
+        alert('Error: User not found. Please enter a valid username.');
       } else {
         console.error('Fetch Error:', error);
       }