#!/bin/bash

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

find $DIR -maxdepth 6 -type d -name ".git" -printf "%h\n" | while read line; do 
    echo "Directory: $line"
    size=$(du -s $line | cut -f1)
    git -C $line reflog expire --all --expire=now > /dev/null 2>>gc_errors.log
    git -C $line gc --prune=now --aggressive > /dev/null 2>>gc_errors.log
    newsize=$(du -s $line | cut -f1)
    if [[ $size == $newsize ]]; then
        echo "Same size, nothing was optimized"
    else
        echo "From $size to $newsize, saved "$(($size - $newsize))" bytes"
    fi
    echo ""
done