Add password requirements to login page (#103)

closes #90 

Would appreciate some feedback on placement and styling - wanted to fit it into the `Label` element but thought it might be better after the form field

packages/app/src/AuthPage.tsx

@@ -7,6 +7,7 @@ import { useEffect } from 'react';
 import Link from 'next/link';
 import cx from 'classnames';
 
+import { PasswordCheck, CheckOrX } from './PasswordCheck';
 import LandingHeader from './LandingHeader';
 import * as config from './config';
 import api from './api';
@@ -24,6 +25,7 @@ export default function AuthPage({ action }: { action: 'register' | 'login' }) {
     handleSubmit,
     formState: { errors, isSubmitting },
     setError,
+    watch,
   } = useForm<FormData>({
     reValidateMode: 'onSubmit',
   });
@@ -45,6 +47,13 @@ export default function AuthPage({ action }: { action: 'register' | 'login' }) {
     }
   }, [installation, isRegister, router]);
 
+  const currentPassword = watch('password', '');
+  const confirmPassword = watch('confirmPassword', '');
+
+  const confirmPass = () => {
+    return currentPassword === confirmPassword;
+  };
+
   const onSubmit: SubmitHandler<FormData> = data =>
     registerPassword.mutate(
       {
@@ -153,15 +162,21 @@ export default function AuthPage({ action }: { action: 'register' | 'login' }) {
                       htmlFor="confirmPassword"
                       className="text-start text-muted fs-7.5 mb-1"
                     >
-                      Confirm Password
+                      <CheckOrX
+                        handler={confirmPass}
+                        password={currentPassword}
+                      >
+                        Confirm Password
+                      </CheckOrX>
                     </Form.Label>
                     <Form.Control
                       data-test-id="form-confirm-password"
                       id="confirmPassword"
                       type="password"
-                      className="border-0"
+                      className="border-0 mb-2"
                       {...form.confirmPassword}
                     />
+                    <PasswordCheck password={currentPassword} />
                   </>
                 )}
                 {isRegister && Object.keys(errors).length > 0 && (

packages/app/src/PasswordCheck.tsx

@@ -0,0 +1,70 @@
+import { useMemo } from 'react';
+
+const checkLength = (password: string) => password.length >= 12;
+const checkOneUpper = (password: string) => /[A-Z]+/.test(password);
+const checkOneLower = (password: string) => /[a-z]+/.test(password);
+const checkOneNumber = (password: string) => /\d+/.test(password);
+const checkOneSpecial = (password: string) => /\W+/.test(password);
+
+export const PasswordCheck = (opts: { password: string }) => {
+  const password = opts.password;
+  return (
+    <div>
+      <div>
+        <CheckOrX handler={checkLength} password={password}>
+          minimum 12 characters
+        </CheckOrX>
+      </div>
+      <div>
+        <CheckOrX handler={checkOneUpper} password={password}>
+          at least 1 uppercase
+        </CheckOrX>
+      </div>
+      <div>
+        <CheckOrX handler={checkOneLower} password={password}>
+          at least 1 lowercase
+        </CheckOrX>
+      </div>
+      <div>
+        <CheckOrX handler={checkOneNumber} password={password}>
+          at least 1 number
+        </CheckOrX>
+      </div>
+      <div>
+        <CheckOrX handler={checkOneSpecial} password={password}>
+          at least 1 special character
+        </CheckOrX>
+      </div>
+    </div>
+  );
+};
+
+export const CheckOrX = ({
+  handler,
+  password,
+  children,
+}: {
+  handler: (password: string) => boolean;
+  password: string | { password: string | null };
+  children: React.ReactNode;
+}) => {
+  let actualPassword = '';
+  if (typeof password === 'string') {
+    actualPassword = password;
+  } else {
+    actualPassword = password.password ?? '';
+  }
+  const isValid = useMemo(
+    () => handler(actualPassword),
+    [handler, actualPassword],
+  );
+  return (
+    <span className={isValid ? 'text-success' : 'text-danger'}>
+      {isValid ? <Check /> : <XShape />} {children}
+    </span>
+  );
+};
+
+const Check = () => <i className={'bi bi-check2'}></i>;
+
+const XShape = () => <i className={'bi bi-x'}></i>;