#!/bin/bash
# -*- mode: sh; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: nil -*-
# vi: set shiftwidth=4 tabstop=8 softtabstop=4 expandtab:
# :indentSize=4:tabSize=8:noTabs=true:
# vim: filetype=sh

# ---- error handling
set -o errexit;
set -o posix;
set -o pipefail;
set -o errtrace;
set -o nounset;
unexpected_error() {
    local errstat=$?
    echo "${g_prog:-$(basename "$0")}: Error! Encountered unexpected error at 'line $(caller)', bailing out..." 1>&2
    exit $errstat;
}
trap unexpected_error ERR;

# Force the path to only what we need, saving off the original path
PATH_ORIG=$PATH;
PATH=/usr/bin:/bin

g_prog=$(basename "$0");
g_progdir=$(dirname "$0");
g_progdir_abs=$(dirname "$(readlink -f "$0")");

# ---- global env

. "$g_progdir_abs/../../private/runtime-common/lib/globalenv.ish"

# ---- error functions
merror() {
    echo "$g_prog: Error! ""$@" 1>&2;
    exit 1;
}
minterror() {
    echo "$g_prog: Internal Error! ""$@" 1>&2;
    exit 1;
}
mwarn() {
    echo "$g_prog: Warning! ""$@" 1>&2;}

# ---- usage

usage() {
    local exitstat=2;
    if [[ ! -z "${2:-}" ]] ; then
        if [[ ! $2 =~ [[:digit:]]+ ]] ; then
            minterror "usage(): exitstat ($2) must be numeric."
        fi
        exitstat=$2;
    fi

    # Only redirect to stderr on non-zero exit status
    if [[ $exitstat -ne 0 ]] ; then
        exec 1>&2;
    fi

    if [[ ! -z "${1:-}" ]] ; then
        echo "$g_prog: Error! $1"
    fi

    echo "Usage: $g_prog [--help] \\"
    echo "             [-e|--exitonerr] \\"
    echo "             [-q|--quiet] \\"
    echo "             [--wait] [--waittime N]"

    echo "         -e|--exitonerr          -- exit on first error"
    echo "         -q|--quiet              -- do not display status output on success";
    echo "                                    (not implemented yet)"
    echo "         --wait                  -- wait for services to be available"
    echo "                                    (ignored)"
    echo "         --waittime              -- time to wait for services to be available"
    echo "                                    (ignored)"
    echo "         --help        -- print this usage";
    echo "";

    if [[ $exitstat -ne 0 ]] ; then
        # Print error again, useful for long usages messages
        if [[ ! -z "${1:-}" ]] ; then
            echo ""
            echo "$g_prog: Error! $1"
        fi
    fi

    # bash only:
    if [[ $exitstat -ne 0 ]] ; then
        echo "  at: $(caller)";
    fi
    exit $exitstat;
}

# ---- argument parsing

# Save off the original args, use as "${g_origargs[@]}" (with double quotes)
declare -a g_origargs;
g_origargs=( ${1+"$@"} )

opt_quiet=false;
opt_exitonerr=false;
opt_wait=false;
opt_waittime=15;
while [[ $# != 0 ]]; do
    opt="$1"; shift;
    case "$opt" in
        # Flag with no argument example:
        #   --flag|--fla|--fl|--f)
        #     opt_flag=true;;
        # Option with argument example:
        #   --arg|--ar|--a)
        #     [[ $# -eq 0 ]] && usage;
        #     opt_somearg=$1; shift;;
        -q|--quiet) opt_quiet=true;;
        -e|--exitonerr) opt_exitonerr=true;;
        --wait) opt_wait=true;;
        --waittime)
             [[ $# -eq 0 ]] && usage;
             opt_waittime=$1; shift;;
        -h|-help|--help|--hel|--he|--h) usage "" 0;;
        -*) usage "Unrecognized option: $opt";;
        *)  usage "Extra trailing arguments: $opt $@";;
    esac
done

# ---- globals

g_rootdir="$g_progdir/../.."
g_rootdir_abs="$g_progdir_abs/../.."

g_slagroot="$g_rootdir/bundles/smrtlink-analysisservices-gui/current/private/pacbio/smrtlink-analysisservices-gui"

g_javahome="$g_rootdir_abs/bundles/smrtlink-analysisservices-gui/current/private/thirdparty/java/jre/jre_8u192b12-hotspot"
g_dbcmds_bindir="$g_rootdir_abs/bundles/smrtlink-analysisservices-gui/current/private/thirdparty/postgresql/postgresql_9.6.1/binwrap"
g_python3_bindir="$g_rootdir_abs/bundles/smrttools/current/private/thirdparty/python3/python3_3.7.3/binwrap"

# ---- subroutines

# ---- main

smrtlink_errors=false;

# smrtlink status
echo
echo "Checking SMRT Link status..."
smrtlink_statstr="<unchecked>"
stat=0
# Bump up retries and sleep time from 3 and 5 to 10 and 8, respectively (to
# see if we start up more reliably).
PATH="$g_javahome/bin:$g_python3_bindir:$g_dbcmds_bindir:$PATH" \
SMRT_PYTHON3_PATH="$g_dbcmds_bindir:$PATH" \
JAVA_HOME="$g_javahome" JAVA_OPTS="-Djava.library.path=" \
    bash "$g_rootdir_abs/bundles/smrtlink-analysisservices-gui/current/private/pacbio/smrtlink-analysisservices-gui/bin/get-status" --max-retries 10 --sleep-time 8 > /dev/null || stat=$?
if [[ $stat != 0 ]] ; then
    smrtlink_errors=true;
    smrtlink_statstr="Not Running"
    echo
else
    smrtlink_statstr="ok"
fi

echo
echo "Status summary:"
echo "    SMRT Link status:  $smrtlink_statstr"

if $smrtlink_errors; then
    exit 1;
fi

exit 0;