Validate endpoint

packages/server/src/api/controllers/oauth2.ts

@@ -7,6 +7,8 @@ import {
   RequiredKeys,
   OAuth2ConfigResponse,
   PASSWORD_REPLACEMENT,
+  ValidateConfigResponse,
+  ValidateConfigRequest,
 } from "@budibase/types"
 import sdk from "../../sdk"
 
@@ -75,3 +77,18 @@ export async function remove(
   await sdk.oauth2.remove(configToRemove)
   ctx.status = 204
 }
+
+export async function validate(
+  ctx: Ctx<ValidateConfigRequest, ValidateConfigResponse>
+) {
+  const { body } = ctx.request
+  const config = {
+    url: body.url,
+    clientId: body.clientId,
+    clientSecret: body.clientSecret,
+  }
+
+  const validation = await sdk.oauth2.validateConfig(config)
+  ctx.status = 201
+  ctx.body = validation
+}

packages/server/src/api/routes/oauth2.ts

@@ -38,5 +38,10 @@ router.delete(
   authorized(PermissionType.BUILDER),
   controller.remove
 )
+router.post(
+  "/api/oauth2/:id/validate",
+  authorized(PermissionType.BUILDER),
+  controller.validate
+)
 
 export default router

packages/server/src/sdk/app/oauth2/utils.ts

@@ -31,3 +31,30 @@ export async function generateToken(id: string) {
 
   return `${jsonResponse.token_type} ${jsonResponse.access_token}`
 }
+
+export async function validateConfig(config: {
+  url: string
+  clientId: string
+  clientSecret: string
+}): Promise<{ valid: boolean; message?: string }> {
+  const resp = await fetch(config.url, {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/x-www-form-urlencoded",
+    },
+    body: new URLSearchParams({
+      grant_type: "client_credentials",
+      client_id: config.clientId,
+      client_secret: config.clientSecret,
+    }),
+    redirect: "follow",
+  })
+
+  const jsonResponse = await resp.json()
+  if (!resp.ok) {
+    const message = jsonResponse.error_description ?? resp.statusText
+    return { valid: false, message }
+  }
+
+  return { valid: true }
+}

packages/types/src/api/web/app/oauth2.ts

@@ -20,3 +20,14 @@ export interface UpsertOAuth2ConfigRequest {
 export interface UpsertOAuth2ConfigResponse {
   config: OAuth2ConfigResponse
 }
+
+export interface ValidateConfigRequest {
+  url: string
+  clientId: string
+  clientSecret: string
+}
+
+export interface ValidateConfigResponse {
+  valid: boolean
+  message?: string
+}