#!/usr/bin/env bash

# This script uses a shallow-get technique to get a list of all top level keys
# in a Firebase Realtime Database, then extract the tree under each key into a
# separate JSON file, one per top level key. 
#
# It’s great for making backups because you don’t end up with one ginormous
# export file which is really hard to manage with other tools.
#
# It can also immediately give you a sense of where your space is going per key,
# which is hard to do any other way. Just look at the size of each JSON file.

for i in `firebase database:get --shallow / | jq -r 'keys[]'`; do
    firebase database:get --export -o backup/$i.json /$i
done