Possibility to configure an OpenID Connect provider on the instance level WIP (#128).

server/lib/diagnostic/external-auth-custom-oidc.ts

@@ -0,0 +1,39 @@
+import type { RegisterServerOptions } from '@peertube/peertube-types'
+import { newResult, TestResult } from './utils'
+import { ExternalAuthOIDC } from '../external-auth/oidc'
+
+export async function diagExternalAuthCustomOIDC (test: string, _options: RegisterServerOptions): Promise<TestResult> {
+  const result = newResult(test)
+  result.label = 'Test External Auth Custom OIDC'
+  result.next = 'everything-ok'
+
+  try {
+    const oidc = ExternalAuthOIDC.singleton()
+
+    if (oidc.isDisabledBySettings()) {
+      result.ok = true
+      result.messages.push('Feature disabled in plugins settings.')
+      return result
+    }
+
+    const errors = await oidc.check()
+    if (errors.length) {
+      result.messages.push({
+        level: 'error',
+        message: 'The ExternalAuthOIDC singleton got some errors:'
+      })
+      result.messages.push(...errors)
+      return result
+    }
+  } catch (err) {
+    result.messages.push({
+      level: 'error',
+      message: 'Error while retrieving the ExternalAuthOIDC singleton:' + (err as string)
+    })
+    return result
+  }
+
+  result.ok = true
+  result.messages.push('Configuration OK.')
+  return result
+}