save twitch credentials cloud function

functions/src/index.ts

@@ -53,6 +53,7 @@ export * from './resolve-market'
 export * from './unsubscribe'
 export * from './stripe'
 export * from './mana-bonus-email'
+export * from './save-twitch-credentials'
 
 import { health } from './health'
 import { transact } from './transact'

functions/src/save-twitch-credentials.ts

@@ -0,0 +1,24 @@
+import * as admin from 'firebase-admin'
+import { z } from 'zod'
+
+import { APIError, newEndpoint, validate } from './api'
+
+const bodySchema = z.object({
+  userId: z.string(),
+  twitchInfo: z.object({
+    twitchName: z.string(),
+    controlToken: z.string(),
+  }),
+})
+
+const BOT_ID = 'BOT_ID'
+
+export const savetwitchcredentials = newEndpoint({}, async (req, auth) => {
+  if (auth.uid !== BOT_ID) throw new APIError(403, 'Invalid access credentials')
+
+  const { userId, twitchInfo } = validate(bodySchema, req.body)
+  await firestore.doc(`private-users/${userId}`).update({ twitchInfo })
+  return { success: true }
+})
+
+const firestore = admin.firestore()