#!/bin/bash
pname="$(basename "${0}")"
jobdir=/mnt/cube1/jobs
if [ ! -d "${jobdir}" ] ; then
    echo "${pname}: missing ${jobdir}"
    exit 1
fi
cmd="${1}"
shift
case "${cmd}" in
-h|--help|help)
    echo "${pname} add TARGET [COMMAND ARGS...]"
    echo "${pname} report [TARGET]"
    echo "${pname} list   [TARGET]"
    echo "${pname} run    [TARGET]"
    exit 0
    ;;
add)
    target="$(echo "${jobdir}/${1}"*)"
    shift
    if [ -d "${target}" ] ; then
        jobfile="${target}/$(date +%Y%m%dT%H%M%S).job"
        if [ $# -gt 0 ] ; then
            ( echo "#!/bin/bash" ; echo "${@}" ) > "${jobfile}"
        else
            ( echo "#!/bin/bash" ; cat ) > "${jobfile}"
        fi
        chmod 755 "${jobfile}"
        echo ${jobfile}
    else
        echo "There is no target ${target}"
        exit 2
    fi
    ;;
list)
    target="${1}"
    shift
    if [ -n "${target}" ] ; then
        ls -l "${jobdir}/${target}"*/*
    else
        ls -l "${jobdir}/"*/*
    fi
    ;;
report)
    format='%8s  %35s  %s\n'
    target="${1}"
    shift
    printf "${format}" "--------" "-----------------------------------" "------------------------------"
    printf "${format}" "status" "host" "job"
    printf "${format}" "--------" "-----------------------------------" "------------------------------"
    find "${jobdir}/${target}"*/ -name \*.job | sort | while read job ; do
        printf "${format}" "Will Run" "$(basename "$(dirname "${job}")")" $(basename "${job}")
    done
    find "${jobdir}/${target}"*/ -name \*.done | sort | while read job ; do
        status="$(echo "${job}"|sed -e 's/\.done$/.status/')"
        if [ -r "${status}" ] ; then
            status=$(sed -n 's/(status *\(.*\))/\1/p' < "${status}"|tail -1)
        else
            status="Cleared"
        fi
        printf "${format}" "${status}" "$(basename "$(dirname "${job}")")" $(basename "${job}")
    done
    printf "${format}" "--------" "-----------------------------------" "------------------------------"
    ;;
rerun)
    for done ; do
        status="$(echo "${done}"|sed -e 's/\.done$/.status/')"
        out="$(echo "${done}"|sed -e 's/\.done$/.out/')"
        err="$(echo "${done}"|sed -e 's/\.done$/.err/')"
        job="$(echo "${done}"|sed -e 's/\.done$/.job/')"
        mv "${done}" "${job}"
        rm -f "${status}" "${out}" "${err}"
    done
    ;;
clean)
    find "${jobdir}" \( -name \*.out -o -name \*.err -o -name \*.status \) -exec rm -f {} \;
    ;;
erase)
    find "${jobdir}" \( -name \*.out -o -name \*.err -o -name \*.status -o -name \*.done \) -exec rm -f {} \;
    ;;
run)
    target="$(echo "${jobdir}/$(hostname)"*)"
    rundir="/tmp/sjob-$$";mkdir -p "${rundir}"
    if [ -d "${target}" ] ; then
        # echo ${target}
        ls "${target}/"*.job
        for job in "${target}/"*.job ; do
            echo "//////////////////////////////////////////////"
            echo "// processing job ${job}"
            echo "//////////////////////////////////////////////"
            # ${f%.x%.y} doesn't work in this bash...
            status="$(echo "${job}"|sed -e 's/\.job$/.status/')"
            out="$(echo "${job}"|sed -e 's/\.job$/.out/')"
            err="$(echo "${job}"|sed -e 's/\.job$/.err/')"
            done="$(echo "${job}"|sed -e 's/\.job$/.done/')"
        echo ${job} / ${status} / ${out} / ${err}
        echo "status=${status}"
        echo "(started \"$(date +%Y%m%dT%H%M%S)\")" >> "${status}"
        echo "(hostname \"$(hostname)\")" >> "${status}"
        interpreter=( $(head -1 "${job}" | sed -n '1s/^#!//p') ) # quotes?
        if [ ${#interpreter} -gt 0 ] ; then
            "${interpreter[@]}" "${job}"  > "${out}" 2> "${err}"
        elif cp "${job}" "${rundir}" ; then
            script="${rundir}/$(basename "${job}")"
            "${script}" > "${out}" 2> "${err}"
        else
            "${SHELL}" "${script}" > "${out}" 2> "${err}"
        fi
        echo "(status $?)" >> "${status}"
        echo "(finished \"$(date +%Y%m%dT%H%M%S)\")" >> "${status}"
        case "${job}" in
        *.persistent.job) true ;;
        *) mv "${job}" "${done}" ;;
        esac
        done
    else
        echo "There is no target ${target}"
        exit 2
    fi
    ;;
*)
    echo "${pname}: syntax error"
    "${0}" --help
    exit 3
esac