#!/bin/bash
#  $HeadURL$ $LastChangedRevision$

#  Modules
. $(miniade) || { echo "${0##*/}: ERROR: miniade failed (hint: run 'miniade' to see error)" >&2; exit 1; }

#  Configurable stuff

#  Other globals

main()
{
    local JSM_SHOW_QUEUE_OUTPUT PROGNAME

    #  Defaults for options

    #  Process options
    #  Note use of '--unknown-opts' to allow unknown options to be
    #  left in $*, so that the case statement below can pass them
    #  (whatever "$@") down for processing.
    miniade_process_standard_options --usage-handler=usage --unknown-opts MY_ARGS "$@" && set -- "${MY_ARGS[@]}"

    #  Process arguments
    #  (complex delegation needing PROGNAME)
    miniade_get_progname PROGNAME
    case $PROGNAME in
        jsc) [ $# -ge 1 ] || usage
             COMMAND=$1
             shift
             [[ $COMMAND =~ ^(quit|suspend|resume|ping|show-queue|submit-job|chres|cancel-job|chprio-job)$ ]] || miniade_error "$COMMAND: invalid command"
             ${COMMAND//-/_} "$@" ;;
        jsq) show_queue "$@" ;;
        jss) submit_job "$@" ;;
        *)   miniade_error "unexpected progname" ;;
    esac
}

quit()
{
    local PROGNAME VERBOSELEVEL

    #  Process arguments
    [ $# = 0 ] || usage

    #  Sanity checks and derivations
    miniade_get_progname PROGNAME
    miniade_get_verboselevel VERBOSELEVEL

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-}
}

suspend()
{
    local PROGNAME VERBOSELEVEL

    #  Process arguments
    [ $# = 0 ] || usage

    #  Sanity checks and derivations
    miniade_get_progname PROGNAME
    miniade_get_verboselevel VERBOSELEVEL

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-}
}

resume()
{
    local PROGNAME VERBOSELEVEL

    #  Process arguments
    [ $# = 0 ] || usage

    #  Sanity checks and derivations
    miniade_get_progname PROGNAME
    miniade_get_verboselevel VERBOSELEVEL

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-}
}

ping()
{
    local PROGNAME VERBOSELEVEL

    #  Process arguments
    [ $# = 0 ] || usage

    #  Sanity checks and derivations
    miniade_get_progname PROGNAME
    miniade_get_verboselevel VERBOSELEVEL

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-}
}

show_queue()
{
    local SHOW_JOB_STATES VERBOSELEVEL PROGNAME

    #  Defaults for options
    SHOW_JOB_STATES=running,pending

    #  Process options
    special_opts_handler()
    {
        case $1 in
            -a) SHOW_JOB_STATES=running,pending,cancelled,completed ;;
            *)  return 1 ;;
        esac
    }
    miniade_process_standard_options --special-opts-handler=special_opts_handler MY_ARGS "$@" && set -- "${MY_ARGS[@]}"

    #  Process arguments
    [ $# = 0 ] || usage

    #  Sanity checks and derivations
    miniade_get_verboselevel VERBOSELEVEL
    miniade_get_progname PROGNAME

    #  Guts
    miniade_debug 10 "show_queue: command=${FUNCNAME[0]//_/-} show-job-states=$SHOW_JOB_STATES"
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-} verboselevel=$VERBOSELEVEL show-job-states=$SHOW_JOB_STATES
}

cancel_job()
{
    local VERBOSELEVEL JOB_ID PROGNAME

    #  Process arguments
    [ $# = 1 ] || usage
    JOB_ID=$1

    #  Sanity checks and derivations
    miniade_get_verboselevel VERBOSELEVEL
    miniade_get_progname PROGNAME

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-} job-id=$JOB_ID
}

chprio_job()
{
    local VERBOSELEVEL JOB_ID PRIORITY PROGNAME

    #  Process arguments
    [ $# = 2 ] || usage
    JOB_ID=$1
    PRIORITY=$2

    #  Sanity checks and derivations
    miniade_get_verboselevel VERBOSELEVEL

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-} job-id=$JOB_ID priority=$PRIORITY
}

chres()
{
    local VERBOSELEVEL RESOURCE_LIST PROGNAME

    #  Process arguments
    [ $# = 1 ] || usage
    RESOURCE_LIST=$1

    #  Sanity checks and derivations
    miniade_get_verboselevel VERBOSELEVEL
    miniade_get_progname PROGNAME

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-} resource-list="$RESOURCE_LIST"
}

submit_job()
{
    local VERBOSELEVEL RESOURCE_LIST JOB_NAME JOB_COMMAND

    #  Defaults for options
    RESOURCE_LIST=
    JOB_NAME=unset

    #  Process options
    special_opts_handler()
    {
        case $1 in
            -r) RESOURCE_LIST=$2; extra_shift ;;
            -n) JOB_NAME=$2;      extra_shift ;;
            *)  return 1 ;;
        esac
    }
    miniade_process_standard_options --special-opts-handler=special_opts_handler MY_ARGS "$@" && set -- "${MY_ARGS[@]}"

    #  Process arguments
    [ $# = 1 ] || usage
    JOB_COMMAND="$1"

    #  Sanity checks and derivations
    miniade_get_verboselevel VERBOSELEVEL
    miniade_get_progname PROGNAME

    #  Guts
    PROGNAME=$PROGNAME jsm --debug=$VERBOSELEVEL command=${FUNCNAME[0]//_/-} job-command="$JOB_COMMAND" resource-list="$RESOURCE_LIST" job-name="$JOB_NAME"
}

usage()
{
    local PROGNAME

    miniade_get_progname PROGNAME

    if [ $PROGNAME = jsc ]; then
        echo "Usage:    $PROGNAME [ <std-opts> ] <command> ..."
        echo
        echo "Options:  -V | --version display program version"
        echo
        echo "Commands: quit"
        echo "          suspend"
        echo "          resume"
        echo "          ping"
        echo "          show-queue [ -a ]"
        echo "          submit-job -r <res>:<qty>[,...] <command>"
        echo "          cancel-job <job-id>"
        echo "          chprio-job <job-id> <priority>"
        echo "          chres <res>:<qty>[,...]"
        echo
    elif [ $PROGNAME = jsq ]; then
        echo "Usage:    $PROGNAME [ <std-opts> ] [ -a ]"
        echo
        echo "Options:  -V | --version display program version"
        echo "          -a             show all jobs"
        echo
    elif [ $PROGNAME = jss ]; then
        echo "Usage:    $PROGNAME [ <std-opts> ] -r <res>:<qty>[,...] [ -n <job-name> ] <command>"
        echo
        echo "Options:  -V | --version display program version"
        echo "          -r             specify job's resource requirements"
        echo "          -n             specify job name"
        echo
    else
        miniade_error "unexpected progname"
    fi >&$((${1:-1}+1))
    exit ${1:-1}
}

version()
{
    echo "$PROGNAME version 0"
    exit 0
}

listpaths()
{
    exit 0
}

main "$@"