#!/bin/bash

# get new vesions of scripts and any new scripts

prefix='bash'
DEST='/root/bin'
URI="http://repo.hpc.lsu.edu/files/${prefix}"
scriptFile='scripts.txt'
scriptList="${URI}/${scriptFile}"

if [[ ! -d ${DEST} ]]
 then
    mkdir -p ${DEST}
 fi

cd ${DEST}
rm -f ${scriptFile}

if [[ ! -f ${prefix}-sync.bash ]]
 then
    ln -s ${prefix}-sync1.bash ${prefix}-sync.bash
 fi

echo 'Downloading script list'
wget "${scriptList}" >/dev/null 2>/dev/null

cat ${scriptFile} | while read line 
 do
    set ${line}
    sum="$1"
    file="$2"
    # sum of 0 says file should be deleted
    if [[ '0' == "${sum}" ]]
     then 
        if [[ -f ${file} ]]
         then
            echo "-Removing: ${file} -- File marked to be deleted!"
            rm -f ${file}
         fi
     else
        # normal checksum
        if [[ -f ${file} ]]
         then
            local=$(sha1sum ${file} | awk '{print $1}')
            if [[ "${local}" != "${sum}" ]]
             then
                echo "-Removing: ${file} -- it has been updated"
                rm -f ${file}
             fi
         fi

        if [[ -f ${file} ]]
         then
            echo "=File is current: ${file}"
         else
            echo "+Downloading current copy of: ${file}"
            wget "${URI}/${file}" >/dev/null 2>/dev/null
            chmod a+x ${file}
         fi
     fi
 done