Refactors most controllers and directives into classes for more organized and maintainable code

app/assets/javascripts/directives/views/privilegesAuthModal.js

@@ -0,0 +1,101 @@
+import template from '%/directives/privileges-auth-modal.pug';
+
+class PrivilegesAuthModalCtrl {
+  /* @ngInject */
+  constructor(
+    $element,
+    $timeout,
+    privilegesManager,
+  ) {
+    this.$element = $element;
+    this.$timeout = $timeout;
+    this.privilegesManager = privilegesManager;
+  }
+
+  $onInit() {
+    this.authParameters = {};
+    this.sessionLengthOptions = this.privilegesManager.getSessionLengthOptions();
+    this.privilegesManager.getSelectedSessionLength().then((length) => {
+      this.$timeout(() => {
+        this.selectedSessionLength = length;
+      })
+    })
+    this.privilegesManager.netCredentialsForAction(this.action).then((credentials) => {
+      this.$timeout(() => {
+        this.requiredCredentials = credentials.sort();
+      });
+    });
+  }
+
+  selectSessionLength(length) {
+    this.selectedSessionLength = length;
+  }
+
+  promptForCredential(credential) {
+    return this.privilegesManager.displayInfoForCredential(credential).prompt;
+  }
+
+  cancel() {
+    this.dismiss();
+    this.onCancel && this.onCancel();
+  }
+
+  isCredentialInFailureState(credential) {
+    if (!this.failedCredentials) {
+      return false;
+    }
+    return this.failedCredentials.find((candidate) => {
+      return candidate === credential;
+    }) != null;
+  }
+
+  validate() {
+    const failed = [];
+    for (const cred of this.requiredCredentials) {
+      const value = this.authParameters[cred];
+      if (!value || value.length === 0) {
+        failed.push(cred);
+      }
+    }
+    this.failedCredentials = failed;
+    return failed.length === 0;
+  }
+
+  async submit() {
+    if (!this.validate()) {
+      return;
+    }
+    const result = await this.privilegesManager.authenticateAction(
+      this.action, 
+      this.authParameters
+    );
+    this.$timeout(() => {
+      if (result.success) {
+        this.privilegesManager.setSessionLength(this.selectedSessionLength);
+        this.onSuccess();
+        this.dismiss();
+      } else {
+        this.failedCredentials = result.failedCredentials;
+      }
+    })
+  }
+
+  dismiss() {
+    this.$element.remove();
+  }
+}
+
+export class PrivilegesAuthModal {
+  constructor() {
+    this.restrict = 'E';
+    this.template = template;
+    this.controller = PrivilegesAuthModalCtrl;
+    this.controllerAs = 'ctrl';
+    this.bindToController = true;
+    this.scope = {
+      action: '=',
+      onSuccess: '=',
+      onCancel: '='
+    };
+  }
+}