feat(webapp): Show integration issues in their settings (#3044)

<!-- Describe the problem and your solution --> 
Waiting on #3050

Shows missing field errors on the integrations page and highlights the
errors on the tab:

<img width="1382" alt="image"
src="https://github.com/user-attachments/assets/377167b2-2b49-4a55-8b28-76530eccb1a6">

And in the integrations list:

<img width="1381" alt="image"
src="https://github.com/user-attachments/assets/60d92ff1-00f8-4c11-8646-b69f3f5c21ac">


<!-- Issue ticket number and link (if applicable) -->


https://linear.app/nango/issue/NAN-2168/surface-integrationsconnections-errors-in-nango-ui

<!-- Testing instructions (skip if just adding/editing providers) -->

- Set up a new integration that needs configuration, but don't configure
it
- View the integration page. You should see a yellow dot in the settings
tab and a banner saying what fields need to be configured

packages/server/lib/controllers/config.controller.ts

@@ -31,6 +31,7 @@ export interface Integration {
     creationDate: Date | undefined;
     connectionConfigParams?: string[];
     credentialParams?: string[];
+    missing_fields_count: number;
 }
 
 export interface ListIntegration {
@@ -131,7 +132,8 @@ class ConfigController {
                         provider: config.provider,
                         scripts: activeFlows.length,
                         connection_count: Number(config.connection_count),
-                        creationDate: config.created_at
+                        creationDate: config.created_at,
+                        missing_fields_count: config.missing_fields.length
                     };
 
                     // Used by legacy connection create

packages/webapp/src/components/ErrorCircle.tsx

@@ -2,10 +2,11 @@ import { IconExclamationMark, IconLock, IconRefresh } from '@tabler/icons-react'
 import type React from 'react';
 
 export type ErrorCircleIcon = '!' | 'sync' | 'auth';
-export const ErrorCircle: React.FC<{ icon?: ErrorCircleIcon }> = ({ icon = '!' }) => {
+export type ErrorCircleVariant = 'error' | 'warning';
+export const ErrorCircle: React.FC<{ icon?: ErrorCircleIcon; variant?: ErrorCircleVariant }> = ({ icon = '!', variant = 'error' }) => {
     return (
         <span className="mx-1 cursor-auto flex h-4 w-4 rounded-full ring-red-base/[.35] ring-4">
-            <span className="flex items-center rounded-full bg-red-base h-4 w-4">
+            <span className={`flex items-center rounded-full ${variant === 'warning' ? 'bg-yellow-base' : 'bg-red-base'} h-4 w-4`}>
                 {icon === '!' && <IconExclamationMark className="ml-[2px] h-3 w-3 text-pure-black" />}
                 {icon === 'sync' && <IconRefresh className="ml-[2px] h-3 w-3 text-pure-black" />}
                 {icon === 'auth' && <IconLock className="ml-[2px] h-3 w-3 text-pure-black" />}

packages/webapp/src/pages/Integrations/List.tsx

@@ -8,6 +8,8 @@ import IntegrationLogo from '../../components/ui/IntegrationLogo';
 
 import { useStore } from '../../store';
 import { useListIntegration } from '../../hooks/useIntegration';
+import { ErrorCircle } from '../../components/ErrorCircle';
+import { SimpleTooltip } from '../../components/SimpleTooltip';
 import { Helmet } from 'react-helmet';
 import { ErrorPageComponent } from '../../components/ErrorComponent';
 
@@ -61,7 +63,7 @@ export default function IntegrationList() {
                                 <div className="w-1/3">Connections</div>
                                 <div className="w-24">Active Scripts</div>
                             </div>
-                            {integrations?.map(({ uniqueKey, provider, connection_count, scripts }) => (
+                            {integrations?.map(({ uniqueKey, provider, connection_count, scripts, missing_fields_count }) => (
                                 <div
                                     key={`tr-${uniqueKey}`}
                                     className={`flex gap-4 ${
@@ -76,6 +78,11 @@ export default function IntegrationList() {
                                             <IntegrationLogo provider={provider} height={7} width={7} />
                                         </div>
                                         <p className="truncate">{uniqueKey}</p>
+                                        {missing_fields_count > 0 && (
+                                            <SimpleTooltip tooltipContent="Missing configuration">
+                                                <ErrorCircle icon="!" variant="warning" />
+                                            </SimpleTooltip>
+                                        )}
                                     </div>
                                     <div className="flex items-center w-1/3">
                                         <p className="">{connection_count}</p>

packages/webapp/src/pages/Integrations/providerConfigKey/Settings/components/General.tsx

@@ -13,11 +13,49 @@ import { InfoBloc } from '../../../../../components/InfoBloc';
 import { CopyButton } from '../../../../../components/ui/button/CopyButton';
 import SecretInput from '../../../../../components/ui/input/SecretInput';
 import type { EnvironmentAndAccount } from '@nangohq/server';
+import { Info } from '../../../../../components/Info';
 
-export const SettingsGeneral: React.FC<{ data: GetIntegration['Success']['data']; environment: EnvironmentAndAccount['environment'] }> = ({
-    data: { integration, meta, template },
-    environment
-}) => {
+const FIELD_DISPLAY_NAMES: Record<string, Record<string, string>> = {
+    OAUTH1: {
+        oauth_client_id: 'Client ID',
+        oauth_client_secret: 'Client Secret'
+    },
+    OAUTH2: {
+        oauth_client_id: 'Client ID',
+        oauth_client_secret: 'Client Secret'
+    },
+    TBA: {
+        oauth_client_id: 'Client ID',
+        oauth_client_secret: 'Client Secret'
+    },
+    APP: {
+        oauth_client_id: 'App ID',
+        oauth_client_secret: 'App Private Key',
+        app_link: 'App Public Link'
+    },
+    CUSTOM: {
+        oauth_client_id: 'Client ID',
+        oauth_client_secret: 'Client Secret',
+        app_link: 'App Public Link',
+        app_id: 'App ID',
+        private_key: 'App Private Key'
+    }
+} as const;
+
+function missingFieldsMessage(
+    template: GetIntegration['Success']['data']['template'],
+    integration: GetIntegration['Success']['data']['integration']
+): string | null {
+    const mappings = FIELD_DISPLAY_NAMES[template.auth_mode];
+    if (!mappings) return null;
+
+    return integration.missing_fields.map((field) => mappings[field] || field).join(', ');
+}
+
+export const SettingsGeneral: React.FC<{
+    data: GetIntegration['Success']['data'];
+    environment: EnvironmentAndAccount['environment'];
+}> = ({ data: { integration, meta, template }, environment }) => {
     const { toast } = useToast();
     const navigate = useNavigate();
 
@@ -59,6 +97,12 @@ export const SettingsGeneral: React.FC<{ data: GetIntegration['Success']['data']
 
     return (
         <div className="flex flex-col gap-8">
+            {integration.missing_fields.length > 0 && (
+                <Info variant="warning">
+                    This integration cannot create connections until the following fields are configured: {missingFieldsMessage(template, integration)}
+                </Info>
+            )}
+
             <div className="grid grid-cols-2 gap-10">
                 <InfoBloc title="API Provider">{integration?.provider}</InfoBloc>
                 <InfoBloc title="Integration ID">

packages/webapp/src/pages/Integrations/providerConfigKey/Show.tsx

@@ -194,7 +194,10 @@ export const ShowIntegration: React.FC = () => {
                     <Button variant={tab === 'home' ? 'active' : 'zombie'}>Endpoints</Button>
                 </Link>
                 <Link to="./settings">
-                    <Button variant={tab === 'settings' ? 'active' : 'zombie'}>Settings</Button>
+                    <Button variant={tab === 'settings' ? 'active' : 'zombie'}>
+                        Settings
+                        {data.integration.missing_fields.length > 0 && <span className="ml-2 bg-yellow-base h-1.5 w-1.5 rounded-full inline-block"></span>}
+                    </Button>
                 </Link>
             </nav>
             <Routes>