#!/bin/bash

command -v php >/dev/null 2>&1 || { echo "I require `php` but it's not available. Aborting." >&2; exit 255; }
command -v grep >/dev/null 2>&1 || { echo "I require `grep` but it's not available. Aborting." >&2; exit 255; }
command -v awk >/dev/null 2>&1 || { echo "I require `awk` but it's not available. Aborting." >&2; exit 255; }

if [ "" == "$1" ] || [ "" == "$2" ];
then
    echo "Usage: bash benchmark.sh BRANCH1 BRANCH2 ...BRANCHN"
    exit 1;
fi

for BRANCH in $@
do
    git checkout $BRANCH &> /dev/null &&
    git reset --hard &> /dev/null &&
    echo -n $BRANCH
    (for i in {1..10}; do php php-cs-fixer fix --dry-run 2> /dev/null ; done) | grep -i seconds | awk '
    {
        total += $5;
        ++count;
    }
    END {
        print " mean:" (total/count) " total:" total " rounds:" count
    }'
done