#!/bin/bash

# this pulls from host $1 to the current host.
# not currently used, but it might be useful at some point

source /a/bin/errhandle/err

cd /

old=$1
new=$HOSTNAME

if [[ ! $old ]]; then
    echo "$0: error: no \$1 given, should be old host"
    exit 1
fi

if ! timeout -s 9 2 ssh $old : ; then
    echo "$0: error: can't ssh to $old"
fi

for p in emacs firefox pidgin; do
    ssh $old killall $p ||:
done

# note: duplicated in check-subvol-stale
last_a=$(
    vol=a
    for s in /mnt/root/btrbk/$vol.*; do
        f=${s##*/}
        unix_time=$(date -d $(sed -r  's/(.{4})(..)(.{5})(..)(.*)/\1-\2-\3:\4:\5/' <<<${f#$vol.}) +%s)
        printf "%s\n" $unix_time
    done | sort -r | head -n 1
      )

if [[ $last_a != [0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9] ]]; then
    echo "$0: error: last_a bad value: $last_a"
    exit 1
fi

# if last_a is recent enough, skip doing btrbk
if  (( last_a < $(date +%s) - 60*60 )); then
    if ! ssh $old btrbk-run -pvt $new; then
        echo "$0: error: failed btrbk-run"
        exit 1
    fi
fi

switch-mail-host $old $new