✨ Add WhatsApp integration beta test (#722)

Related to #401

apps/builder/src/features/whatsapp/getSystemTokenInfo.ts

@@ -0,0 +1,88 @@
+import { authenticatedProcedure } from '@/helpers/server/trpc'
+import { z } from 'zod'
+import got from 'got'
+import { TRPCError } from '@trpc/server'
+import { WhatsAppCredentials } from '@typebot.io/schemas/features/whatsapp'
+import prisma from '@/lib/prisma'
+import { decrypt } from '@typebot.io/lib/api/encryption'
+
+const inputSchema = z.object({
+  token: z.string().optional(),
+  credentialsId: z.string().optional(),
+})
+
+export const getSystemTokenInfo = authenticatedProcedure
+  .meta({
+    openapi: {
+      method: 'GET',
+      path: '/whatsapp/systemToken',
+      protect: true,
+    },
+  })
+  .input(inputSchema)
+  .output(
+    z.object({
+      appId: z.string(),
+      appName: z.string(),
+      expiresAt: z.number(),
+      scopes: z.array(z.string()),
+    })
+  )
+  .query(async ({ input, ctx: { user } }) => {
+    if (!input.token && !input.credentialsId)
+      throw new TRPCError({
+        code: 'BAD_REQUEST',
+        message: 'Either token or credentialsId must be provided',
+      })
+    const credentials = await getCredentials(user.id, input)
+    if (!credentials)
+      throw new TRPCError({
+        code: 'NOT_FOUND',
+        message: 'Credentials not found',
+      })
+    const {
+      data: { expires_at, scopes, app_id, application },
+    } = (await got(
+      `https://graph.facebook.com/v17.0/debug_token?input_token=${credentials.systemUserAccessToken}`,
+      {
+        headers: {
+          Authorization: `Bearer ${credentials.systemUserAccessToken}`,
+        },
+      }
+    ).json()) as {
+      data: {
+        app_id: string
+        application: string
+        expires_at: number
+        scopes: string[]
+      }
+    }
+
+    return {
+      appId: app_id,
+      appName: application,
+      expiresAt: expires_at,
+      scopes,
+    }
+  })
+
+const getCredentials = async (
+  userId: string,
+  input: z.infer<typeof inputSchema>
+): Promise<Omit<WhatsAppCredentials['data'], 'phoneNumberId'> | undefined> => {
+  if (input.token)
+    return {
+      systemUserAccessToken: input.token,
+    }
+  const credentials = await prisma.credentials.findUnique({
+    where: {
+      id: input.credentialsId,
+      workspace: { members: { some: { userId } } },
+    },
+  })
+  if (!credentials) return
+  return (await decrypt(
+    credentials.data,
+    credentials.iv
+  )) as WhatsAppCredentials['data']
+}