Fix CSP errors - migrate inline JS to stimulus controllers. Add a URL for applications so users can discover them

app/javascript/controllers/login_form_controller.js

@@ -0,0 +1,92 @@
+import { Controller } from "@hotwired/stimulus"
+
+// Handles login form UI changes based on WebAuthn availability
+export default class extends Controller {
+  static targets = ["webauthnSection", "passwordSection", "statusMessage", "loadingOverlay"]
+
+  connect() {
+    // Listen for WebAuthn availability events from the webauthn controller
+    this.element.addEventListener('webauthn:webauthn-available', this.handleWebAuthnAvailable.bind(this));
+
+    // Listen for WebAuthn registration events (from profile page)
+    this.element.addEventListener('webauthn:passkey-registered', this.handlePasskeyRegistered.bind(this));
+
+    // Listen for authentication start/end to show/hide loading
+    document.addEventListener('webauthn:authenticate-start', this.showLoading.bind(this));
+    document.addEventListener('webauthn:authenticate-end', this.hideLoading.bind(this));
+  }
+
+  disconnect() {
+    // Clean up event listeners
+    document.removeEventListener('webauthn:authenticate-start', this.showLoading.bind(this));
+    document.removeEventListener('webauthn:authenticate-end', this.hideLoading.bind(this));
+  }
+
+  handleWebAuthnAvailable(event) {
+    const detail = event.detail;
+
+    if (!this.hasWebauthnSectionTarget || !this.hasPasswordSectionTarget) {
+      return;
+    }
+
+    if (detail.hasWebauthn) {
+      this.webauthnSectionTarget.classList.remove('hidden');
+
+      // If WebAuthn is required, hide password section
+      if (detail.requiresWebauthn) {
+        this.passwordSectionTarget.classList.add('hidden');
+      } else {
+        // Show both options with a divider
+        this.passwordSectionTarget.classList.add('border-t', 'pt-4', 'mt-4');
+        this.addOrDivider();
+      }
+    }
+  }
+
+  handlePasskeyRegistered(event) {
+    if (!this.hasStatusMessageTarget) {
+      return;
+    }
+
+    // Show success message
+    this.statusMessageTarget.className = 'mt-4 p-3 rounded-md bg-green-50 text-green-800 border border-green-200';
+    this.statusMessageTarget.textContent = 'Passkey registered successfully!';
+    this.statusMessageTarget.classList.remove('hidden');
+
+    // Hide after 3 seconds
+    setTimeout(() => {
+      this.statusMessageTarget.classList.add('hidden');
+    }, 3000);
+  }
+
+  showLoading() {
+    if (this.hasLoadingOverlayTarget) {
+      this.loadingOverlayTarget.classList.remove('hidden');
+    }
+  }
+
+  hideLoading() {
+    if (this.hasLoadingOverlayTarget) {
+      this.loadingOverlayTarget.classList.add('hidden');
+    }
+  }
+
+  addOrDivider() {
+    // Check if divider already exists
+    if (this.element.querySelector('.login-divider')) {
+      return;
+    }
+
+    const orDiv = document.createElement('div');
+    orDiv.className = 'relative my-4 login-divider';
+    orDiv.innerHTML = `
+      <div class="absolute inset-0 flex items-center">
+        <div class="w-full border-t border-gray-300"></div>
+      </div>
+      <div class="relative flex justify-center text-sm">
+        <span class="px-2 bg-white text-gray-500">Or</span>
+      </div>
+    `;
+    this.webauthnSectionTarget.parentNode.insertBefore(orDiv, this.passwordSectionTarget);
+  }
+}