#!/bin/bash

export AUTO_INSTALL=${AUTO_INSTALL:-"true"}
export FORCE_INSTALL=${FORCE_INSTALL:-"false"}
export FETCH_ONLY=${FETCH_ONLY:-"false"}
export STALE_DAYS=${STALE_DAYS:-"2"}

if ! which curl >> /dev/null 2>&1
then
 printf "$0 requires curl to be in the path.\n";
 exit 2
fi

export EB_JARNAME="eb.jar"

DOINSTALL="false"
if [ ! -f "${EB_JARNAME}" -a "${AUTO_INSTALL}" = "true" ]
then DOINSTALL="true"
elif [ "${FORCE_INSTALL}" = "true" ]
then DOINSTALL="true"
elif find ${EB_JARNAME} -mtime ${STALE_DAYS} | grep ${EB_JARNAME}
# 2>&1 >>/dev/null
then
 DOINSTALL="true"
 printf "forcing download because the jar is more than %s days old\n" ${STALE_DAYS}
fi

if [ "${DOINSTALL}" = "true" ]
then

export central_runtime_version=$(
   curl -s -L \
   'http://search.maven.org/solrsearch/select?q=g:"io.engineblock"%20AND%20a:"eb-cli"%20AND%20p:"jar"&wt=json&rows=1' \
   | perl -pe 'if (/"latestVersion":"([\d\.]+?)"/) { $_ = $1 } else {$_="nope"}'
)
export DOWNLOAD_VERSION=${central_runtime_version:?"Unable to find a downloadble version via maven central search."}
printf 'Downloading version: %s\n...' ${DOWNLOAD_VERSION} 1>&2
export DOWNLOAD_URL="https://repo1.maven.org/maven2/io/engineblock/eb-cli/${DOWNLOAD_VERSION}/eb-cli-${DOWNLOAD_VERSION}.jar"
printf 'Download URL: %s\n' ${DOWNLOAD_URL}

printf 'fetching EngineBlock CLI from %s...\n' "${DOWNLOAD_URL}" 1>&2

(
 cd /tmp ;
 curl -s -L -o 'eb.jar' "${DOWNLOAD_URL}"
)
mv /tmp/eb.jar ${EB_JARNAME}
printf "The EB jar has been saved as %s\n" ${EB_JARNAME}
fi

if [ "${FETCH_ONLY}" = "true" ]
then
 printf "fetching client only, exiting\n" 1>&2
 exit 0;
fi;

java -jar ${EB_JARNAME} \
 $*