autobackup&remove firestore

gistfile1.txt

#!/bin/bash
now="$(date)"
printf "Current date and time %s\n" "$now"
now="$(date +'%d%m%Y')"
printf "Current date in dd/mm/yyyy format %s\n" "$now"
 
echo "Starting backup at $now, please wait..."
/snap/bin/gcloud beta firestore export gs://backup-bucket/"$now" --collection-ids={collection in firestore can commas for multiple collections}
#-15 day from today
DATE="$(date --date="-15 day" "+%s")"
echo $DATE
echo "successfully backup !"
##ใส่ path ให้ถูกนะ
list=`/snap/bin/gsutil -m ls -l gs://backup-bucket/`

for f in $list
do
       #this here up to range of bucket name your need to substring manual example gs://backup-bucket/04062020
       # y=${f:23:4} you will get 2020
       # m=${f:21:2} you will get 06
       # d=${f:19:2} you will get 04
        y=${f:{up to your path}:4}
        echo $y
        m=${f:{up to your path}:2}
        echo $m
        d=${f:{up to your path}:2}
        createDate="$(date -d "$y-$m-$d" "+%s")"
        echo $createDate
        if [[ "$createDate" < "$DATE" ]];
         then
                echo "yes, starting remove $f"
                #remove older 15 days
                remove=`/snap/bin/gsutil -m rm -r "$f"`
                echo "remove $f succesfully"    
        fi
done