feat(integration): ✨ Add Google Sheets integration

apps/builder/pages/api/integrations/google-sheets/spreadsheets/[id]/sheets.ts

@@ -0,0 +1,41 @@
+import { NextApiRequest, NextApiResponse } from 'next'
+import { GoogleSpreadsheet } from 'google-spreadsheet'
+import { getAuthenticatedGoogleClient } from 'libs/google-sheets'
+import { methodNotAllowed } from 'utils'
+import { getSession } from 'next-auth/react'
+import { User } from 'db'
+
+const handler = async (req: NextApiRequest, res: NextApiResponse) => {
+  const session = await getSession({ req })
+
+  if (!session?.user)
+    return res.status(401).json({ message: 'Not authenticated' })
+
+  const user = session.user as User
+  if (req.method === 'GET') {
+    const credentialsId = req.query.credentialsId.toString()
+
+    const spreadsheetId = req.query.id.toString()
+    const doc = new GoogleSpreadsheet(spreadsheetId)
+    doc.useOAuth2Client(
+      await getAuthenticatedGoogleClient(user.id, credentialsId)
+    )
+    await doc.loadInfo()
+    return res.send({
+      sheets: await Promise.all(
+        Array.from(Array(doc.sheetCount)).map(async (_, idx) => {
+          const sheet = doc.sheetsByIndex[idx]
+          await sheet.loadHeaderRow()
+          return {
+            id: sheet.sheetId,
+            name: sheet.title,
+            columns: sheet.headerValues,
+          }
+        })
+      ),
+    })
+  }
+  return methodNotAllowed(res)
+}
+
+export default handler