#!/bin/sh

MAX_SIZE=98*1000*1000
export TOP_PID=$$
trap 'exit 1' TERM

SolveBigFile(){
    file_size=$(stat -c %s "${1}")
        if [[ $file_size -gt $MAX_SIZE ]]; then
            file_size=$(awk 'BEGIN{printf "%.2f\n",'$file_size'/'1000000'}')
            echo "The file is too large."
            echo "    File Name: ${1}"
            echo "    File Size: ${file_size} MB"
            echo "Solution:  git reset HEAD <file> and rm <file>"

            git reset "${1}"
            rm "${1}"
            return 1
        else
        	return 0
        fi
}


for file in ./*
do
    if test -f "${file}"
    then
        SolveBigFile "${file}"
    fi
    if test -d "${file}"
    then
        ls "${file}" | while read sub_file
        do
            if test -d "${sub_file}"; then
                echo "error: the directory has sub dir."
                exit 1
            fi

            SolveBigFile "${file}/${sub_file}"
            if [ 1 -eq $? ]; then
            	kill -s TERM $TOP_PID
            fi
        done
    fi
done