Firebase: export from firestore A to firestore B

gistfile1.txt

#!/bin/sh

FOLDER_NAME=`date +\%y\%m\%d\%s`
echo "Enter bucket identifier (you can find it in project Settings)"
read BUCKET_NAME
echo "Enter target bucket"
read TARGET_BUCKET



gcloud config set project BUCKET_NAME &&
gcloud firestore export gs://$BUCKET_NAME.appspot.com/backups/$FOLDER_NAME &&
gsutil -m cp -R gs://$BUCKET_NAME.appspot.com/backups/$FOLDER_NAME . &&
gcloud config set project $TARGET_BUCKET &&
cd backups && gsutil cp -r $FOLDER_NAME gs://$TARGET_BUCKET.appspot.com/backups &&
gcloud firestore import gs://$TARGET_BUCKET.appspot.com/backups/$FOLDER_NAME