feat(admin) user delete & admin creation

components/admin/main.php

@@ -8,7 +8,7 @@ if (!isset($_SESSION['is_admin']) || $_SESSION['is_admin'] !== 1) {
 function getUsers() {
     global $conn;
     try {
-        $query = $conn->prepare("SELECT id, email, firstName, lastName FROM users");
+        $query = $conn->prepare("SELECT id, email, firstName, lastName, is_admin FROM users");
         $query->execute();
         return $query->fetchAll(PDO::FETCH_ASSOC);
     } catch (PDOException $e) {
@@ -18,16 +18,16 @@ function getUsers() {
 
 $users = getUsers();
 
-function updateUserDetails($userId, $email, $firstName, $lastName, $password = null) {
+function updateUserDetails($userId, $email, $firstName, $lastName, $is_admin, $password = null) {
     global $conn;
     try {
         if ($password) {
-            $query = $conn->prepare("UPDATE users SET email = ?, firstName = ?, lastName = ?, password = ? WHERE id = ?");
+            $query = $conn->prepare("UPDATE users SET email = ?, firstName = ?, lastName = ?, password = ?, is_admin = ? WHERE id = ?");
             $hashedPassword = password_hash($password, PASSWORD_DEFAULT);
-            $query->execute([$email, $firstName, $lastName, $hashedPassword, $userId]);
+            $query->execute([$email, $firstName, $lastName, $hashedPassword, $is_admin, $userId]);
         } else {
-            $query = $conn->prepare("UPDATE users SET email = ?, firstName = ?, lastName = ? WHERE id = ?");
+            $query = $conn->prepare("UPDATE users SET email = ?, firstName = ?, lastName = ?, is_admin = ? WHERE id = ?");
-            $query->execute([$email, $firstName, $lastName, $userId]);
+            $query->execute([$email, $firstName, $lastName, $is_admin, $userId]);
         }
         return true;
     } catch(PDOException $e) {
@@ -35,10 +35,40 @@ function updateUserDetails($userId, $email, $firstName, $lastName, $password = n
     }
 }
 
-if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['userId'])) {
+function deleteUser($userId) {
-    $password = !empty($_POST['password']) ? $_POST['password'] : null;
+    global $conn;
+    try {
+        $query = $conn->prepare("DELETE FROM users WHERE id = ?");
+        $query->execute([$userId]);
+        return true;
+    } catch(PDOException $e) {
+        return false;
+    }
+}
 
-    $success = updateUserDetails($_POST['userId'], $_POST['email'], $_POST['firstName'], $_POST['lastName'], $password);
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['userId'])) {
+    if (isset($_POST['delete'])) {
+        if ($_POST['userId'] == $_SESSION['user_id']) {
+            echo 222;
+            $_SESSION['message'] = '<div class="alert alert-danger text-center" role="alert">You cannot delete yourself.</div>';
+            header("Location: " . $_SERVER['REQUEST_URI']);
+            exit();
+        }
+        $success = deleteUser($_POST['userId']);
+        if ($success) {
+            $_SESSION['message'] = '<div class="alert alert-success text-center" role="alert">User deleted successfully.</div>';
+        } else {
+            $_SESSION['message'] = '<div class="alert alert-danger text-center" role="alert">Failed to delete user.</div>';
+        }
+        header("Location: " . $_SERVER['REQUEST_URI']);
+        exit();
+    }
+    
+    $password = !empty($_POST['password']) ? $_POST['password'] : null;
+    $_POST['is_admin'] = isset($_POST['is_admin']) ? 1 : 0;
+    
+
+    $success = updateUserDetails($_POST['userId'], $_POST['email'], $_POST['firstName'], $_POST['lastName'], $_POST['is_admin'], $password);
 
     if ($success) {
         $_SESSION['message'] = '<div class="alert alert-success text-center" role="alert">User updated successfully.</div>';
@@ -69,5 +99,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['userId'])) {
         editUserModal.querySelector('#editEmail').value = event.relatedTarget.getAttribute('data-email');
         editUserModal.querySelector('#editFirstName').value = event.relatedTarget.getAttribute('data-firstname');
         editUserModal.querySelector('#editLastName').value = event.relatedTarget.getAttribute('data-lastname');
+        editUserModal.querySelector('#editIsAdmin').checked = event.relatedTarget.getAttribute('data-isadmin') === '1';
     });
     </script>

components/admin/modal.php

@@ -25,6 +25,10 @@
                             <input type="password" class="form-control" id="editPassword" name="password">
                             <small class="form-text text-muted">Leave blank if you do not want to change the password</small>
                         </div>
+                        <div class="mb-3 form-check">
+                            <input type="checkbox" class="form-check-input" id="editIsAdmin" name="is_admin">
+                            <label class="form-label" for="editIsAdmin">Admin role</label>
+                        </div>
                         <button type="submit" class="btn btn-primary">Save Changes</button>
                     </form>
                 </div>

components/admin/users_list.php

@@ -16,15 +16,24 @@
                     <td><?php echo htmlspecialchars($user['firstName']); ?></td>
                     <td><?php echo htmlspecialchars($user['lastName']); ?></td>
                     <td>
-                        <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#editUserModal"
+                        <div class="d-flex">
+                            <button type="button" class="btn btn-primary me-2" data-bs-toggle="modal" data-bs-target="#editUserModal"
                                     data-id="<?php echo htmlspecialchars($user['id']); ?>"
                                     data-email="<?php echo htmlspecialchars($user['email']); ?>"
                                     data-firstname="<?php echo htmlspecialchars($user['firstName']); ?>"
-                                data-lastname="<?php echo htmlspecialchars($user['lastName']); ?>">
+                                    data-lastname="<?php echo htmlspecialchars($user['lastName']); ?>"
+                                    data-isadmin="<?php echo htmlspecialchars($user['is_admin']); ?>"
+                                    >
                                 Edit
                             </button>
+                            <form method="POST" action="">
+                                <input type="hidden" name="userId" value="<?php echo htmlspecialchars($user['id']); ?>">
+                                <button type="submit" name="delete" class="btn btn-danger">Delete</button>
+                            </form>
+                        </div>
                     </td>
                 </tr>
+                </tr>
                 <?php endforeach; ?>
             </tbody>
         </table>

components/register/main.php

@@ -21,6 +21,16 @@ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
       $query->bindParam(':password', password_hash($_POST['password'], PASSWORD_DEFAULT));
       $query->execute();
 
+      $query = $conn->prepare("SELECT COUNT(*) as count FROM users");
+      $query->execute();
+      $result = $query->fetch(PDO::FETCH_ASSOC);
+
+      if ($result['count'] == 1) {
+        $query = $conn->prepare("UPDATE users SET is_admin = 1 WHERE email = :email");
+        $query->bindParam(':email', $_POST['email']);
+        $query->execute();
+      }
+
       header("Location: login.php");
       exit();
     }