#!/usr/bin/env bash

set -ueo pipefail

if test $# -lt 1; then
    echo "Usage: perf-glance SRC_DATA_PATH..." 1>&2
    exit 1
fi
set -x
src_data=("$@")

top="$(pwd)"
script_name="$(basename $0)"

mkdir -p "$top/t/tmp"
tmpdir="$(mktemp -d "$top/t/tmp/$script_name-XXXXXXX")"

export BUP_DIR="$tmpdir/bup"

bup()
{
    "$top/bup" "$@"
}

get-time()
{
    python -c 'import time; print time.time()'
}

rm -rf "$BUP_DIR"

all_start="$(get-time)"

init_start="$(get-time)"
bup init
init_finish="$(get-time)"

index_start="$(get-time)"
bup index "${src_data[@]}"
index_finish="$(get-time)"

save_start="$(get-time)"
bup save -t -n data "${src_data[@]}"
save_finish="$(get-time)"

mkdir "$tmpdir/restore"
restore_start="$(get-time)"
bup restore -C "$tmpdir/restore" "/data/latest/"
restore_finish="$(get-time)"

all_finish="$(get-time)"

set +x
cat <<EOS

init: $(python -c "print $init_finish - $init_start")
index: $(python -c "print $index_finish - $index_start")
save: $(python -c "print $save_finish - $save_start")
restore: $(python -c "print $restore_finish - $restore_start")
all: $(python -c "print $all_finish - $all_start")
EOS

cd "$top"
rm -r "$tmpdir"