sftpget.zsh

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#! /usr/bin/env zsh
## ------------------------------------------------------------------------------------------
##
##                         Utils to get and upload files on sftp
##
## ------------------------------------------------------------------------------------------

#!/bin/zsh
script=${0##*/}

source ${0%${script}}ulib.sh

if do_usage $*; then
    usage "$script  file_path/filename"\
          "\nUtility script to get files from sftp, for example, \"$script singularity/irods_v3.3.1.sif\""
fi

case $# in
    1)  ;;
    *)  fatal "Wrong number of arguments."
esac

notice `which ${script:r}` ${1}
                
export WGET_MAX_ATTEMPTS=5

FILENAME=${1}
wget --no-check-certificate -q sftp.km3net.de/${FILENAME}.md5 -O ${FILENAME:t}.md5

if [ -s ${FILENAME:t}.md5 ]; then

        WGET_ATTEMPT=$WGET_MAX_ATTEMPTS
        while [[ $WGET_ATTEMPT != 0 ]]; do
                wget -q sftp.km3net.de/${FILENAME} -O ${FILENAME:t}
                if md5sum --status -c ${FILENAME:t}.md5; then
                        WGET_ATTEMPT=0
                else
                        echo "WARNING: download failed, retrying"
                        cat ${FILENAME:t}.md5
                        md5sum ${FILENAME:t}
                        let WGET_ATTEMPT=WGET_ATTEMPT-1
                fi
        done

        if md5sum --status -c ${FILENAME:t}.md5; then
                echo "file download and check OK!"
                rm ${FILENAME:t}.md5
        fi

else
        echo "WARNING: MD5 file is not avilable or empty"
        rm ${FILENAME:t}.md5
        wget -q sftp.km3net.de/${FILENAME} -O ${FILENAME:t}
fi