feat: authenticationProviders API endpoints (#1962)

server/auth/providers/index.js

@@ -0,0 +1,37 @@
+// @flow
+import { signin } from "../../../shared/utils/routeHelpers";
+import { requireDirectory } from "../../utils/fs";
+
+let providers = [];
+
+requireDirectory(__dirname).forEach(([module, id]) => {
+  const { config, default: router } = module;
+
+  if (id === "index") {
+    return;
+  }
+
+  if (!config) {
+    throw new Error(
+      `Auth providers must export a 'config' object, missing in ${id}`
+    );
+  }
+
+  if (!router || !router.routes) {
+    throw new Error(
+      `Default export of an auth provider must be a koa-router, missing in ${id}`
+    );
+  }
+
+  if (config && config.enabled) {
+    providers.push({
+      id,
+      name: config.name,
+      enabled: config.enabled,
+      authUrl: signin(id),
+      router: router,
+    });
+  }
+});
+
+export default providers;