Add password strength indicator.

assets/js/password/check.js

@@ -0,0 +1,71 @@
+const passwordField = document.querySelector('.js-password-input');
+const passwordStrength = document.querySelector('.js-password-strength');
+const username = document.querySelector('.js-username');
+const email = document.querySelector('.js-email-address');
+
+function resetBackgroundColor() {
+    for (let i = 0; i < 5; i++) {
+        passwordStrength.children.item(i).classList.add('u-bg-gray-20');
+        passwordStrength.children.item(i).classList.remove('u-bg-red');
+        passwordStrength.children.item(i).classList.remove('u-bg-bewelcome');
+        passwordStrength.children.item(i).classList.remove('u-bg-bewelcome-dark');
+        passwordStrength.children.item(i).classList.remove('u-bg-green');
+        passwordStrength.children.item(i).classList.remove('u-bg-green-dark');
+    }
+}
+async function getPasswordScore() {
+    // Collect form data (username, email address and password)
+    // Send to server to calculate score
+    // Change colors
+    const formData = new FormData();
+    formData.append('username', username.value);
+    formData.append('email', email.value);
+    formData.append('password', passwordField.value);
+
+    let score = 0;
+    try {
+        const response = await fetch("/password/check/", {
+            method: "POST",
+            // Set the FormData instance as the request body
+            body: formData,
+        });
+        const json = await response.json();
+        score = json.score;
+    } catch (e) {
+        console.error(e);
+    }
+
+    let backgroundColor;
+    switch(score) {
+        case 0: backgroundColor = 'u-bg-red'; break;
+        case 1: backgroundColor = 'u-bg-bewelcome-dark'; break;
+        case 2: backgroundColor = 'u-bg-bewelcome'; break;
+        case 3: backgroundColor = 'u-bg-green'; break;
+        case 4: backgroundColor = 'u-bg-green-dark'; break;
+    }
+
+    resetBackgroundColor();
+    for (let i = 0; i < 5; i++) {
+        if (i <= score) {
+            passwordStrength.children.item(i).classList.remove('u-bg-gray-20');
+            passwordStrength.children.item(i).classList.add(backgroundColor);
+        }
+    }
+}
+
+let timeout;
+
+passwordField.addEventListener('keyup', () => {
+    clearTimeout(timeout);
+    if (passwordField.value == '') {
+        for (let i = 0; i < 5; i++) {
+            resetBackgroundColor();
+        }
+    } else {
+        timeout = setTimeout(() => { getPasswordScore(); }, 500);
+    }
+});
+
+if (passwordField.value != '') {
+    g
+}

assets/js/password/showhide.js

@@ -1,5 +1,6 @@
-const passwordField = document.querySelector('input[type="password"]');
-const showHidePasswordButton = document.getElementById("password_show_hide");
+const passwordField = document.querySelector('.js-password-input');
+const showHidePasswordButton = document.querySelector('.js-password-show-hide');
+
 const showHidePassword = (event) => {
     if (passwordField.type === 'text') {
         passwordField.type = 'password';

assets/scss/bewelcome.scss

@@ -587,3 +587,15 @@ $avatar-sizes: 30, 50, 75, 100, 150, 200, 500;
   color: white;
   background-color: #ffb474;
 }
+
+.js-password-input:placeholder-shown ~ .js-password-show-hide {
+  visibility: hidden;
+}
+
+.js-password-input:not(:placeholder-shown) ~ .js-password-show-hide {
+  visibility: visible;
+}
+
+.js-password-input.is-invalid ~ .js-password-show-hide {
+  right: 24px;
+}

composer.json

@@ -24,6 +24,7 @@
         "api-platform/core": "2.*",
         "babdev/pagerfanta-bundle": "3.*",
         "beberlei/doctrineextensions": "^1.3",
+        "bjeavons/zxcvbn-php": "^1.3",
         "doctrine/doctrine-bundle": "^2.0",
         "doctrine/doctrine-migrations-bundle": "^2.0",
         "doctrine/orm": "^2.8.4",