#!/bin/bash

source config.sh
set -euxo pipefail

function main {
    date=$(date +%Y-%m-%d)
    month=$(date +%B)
    for i in ${!SUBVOLS[@]}
        do
            snapName=${VOLNAME[$i]}.$date
            snapYest=$SNAPDIR${VOLNAME[$i]}.$(date -d "$date -1 day" +%Y-%m-%d)
            btrfs subvolume snapshot -r ${SUBVOLS[$i]} $SNAPDIR$snapName
            if [[ -d "$snapYest" && $bkType = "daily" && $? -ne 0 ]]
                then
                    btrfs send -p $snapYest $SNAPDIR$snapName | gpg --batch -er $PUBKEY -o - | rclone rcat $RCLONEDIR$month/$snapName.pgp
                else
                    btrfs send $SNAPDIR$snapName | gpg --batch -er $PUBKEY -o - | rclone rcat $RCLONEDIR$snapName.pgp
            fi
            if [[ $bktype = monthly ]]
                then
                    for f in `seq 1 2`
                        do
                            btrfs subvolume delete $SNAPDIR${VOLNAME[$i]}.$(date -d "$date -$f day" +%Y-%m-%d)
                    done
                    rclone delete $RCLONEDIR$(date -d "$month -1 month" +%B)/
                else
                    btrfs subvolume delete $SNAPDIR${VOLNAME[$i]}.$(date -d "$date -2 day" +%Y-%m-%d)
            fi
    done
}

if [ `date +%d` != "01" ]
    then
        bkType=daily
        main
    else
        bkType=monthly
        main
fi