#!/bin/bash

USAGE="gen_seed.sh ROOT FOLDERS FILES FILENAMES INTEGERS USER DIR : generate a file USER.seed in the DIR folder, which can be then used to generate exercises."

if [[ $# != 7 ]] ; then echo -e $USAGE ; exit 0 ; fi

# This users home
root=$1

# How many random folders, files, filenames and integers you need
folders=$2
files=$3
filenames=$4
ints=$5

# username
USER=$6

# Seeds storage
DIR=$7

if echo $DIR | grep -v /$ ; then DIR=$DIR/ ; fi

mkdir $DIR$USER ; 

find $root -type d | shuf | head -n $folders > $DIR$USER/folders.seed

find $root -type f | shuf | head -n $files > $DIR$USER/files.seed

cat haddock.list | shuf | head -n $filenames > $DIR$USER/filenames.seed

if [[ -s $DIR$USER/ints.seed ]] ; then rm $DIR$USER/ints.seed ; fi

for i in $(seq 1 $ints) ; do
    echo $((3 + $RANDOM % 13)) >> $DIR$USER/ints.seed
done