#!/bin/bash

VERSION=1591273737
## Script to automatically determine what version of plugin needs to be downloaded
## and installs it

## Uncomment these lines if you get errors about invalid ssl certificates
#WGET_OPTIONS="--no-check-certificate"
#CURL_OPTIONS="-k"


echo "Executing core-traditional-unbreak.sh version $VERSION"

hinit() {
    rm -f /tmp/hashmap.$1
}

hput() {
    echo "$2 $3" >> /tmp/hashmap.$1
}

hget() {
    PLUGIN_URL=$(grep "^$2 " /tmp/hashmap.$1 | awk '{ print $2 };' )
}

# is PLUGIN_ROOT set?
 if [[ -z "$PLUGIN_ROOT" ]]; then
    echo "PLUGIN_ROOT not set, exiting..."
    exit
else
    echo "Using PLUGIN_ROOT defined as $PLUGIN_ROOT"
fi

# is JENKINS_USER set?
 if [[ -z "$JENKINS_USER" ]]; then
    # try to determine the current fileowner
    file_meta=($(ls -ld $PLUGIN_ROOT/cloudbees-license.jpi))
    JENKINS_USER="${file_meta[2]}"
fi
echo "Using JENKINS_USER defined as $JENKINS_USER"

# is JENKINS_GROUP set?
 if [[ -z "$JENKINS_GROUP" ]]; then
    # try to determine the current filegroup
    file_meta=($(ls -ld $PLUGIN_ROOT/cloudbees-license.jpi))
    JENKINS_GROUP="${file_meta[3]}"
fi
echo "Using JENKINS_GROUP defined as $JENKINS_GROUP"

toolsMissing="0"
verify_command() {
  echo "Verifying command [${1}] is installed..."

  if command -v $1 >/dev/null 2>&1; then
    echo "Confirmed command [${1}] present."
  else
    echo "Command [${1}] ${2}"
    toolsMissing="1"
  fi
}

echo "Checking to see if required tools are present"

verify_command awk "awk is required, please install it and re-run this script"
verify_command grep "grep is required, please install it and re-run this script"
verify_command tr "tr is required, please install it and re-run this script"
verify_command chown "chown is required, please install it and re-run this script"
verify_command chgrp "chgrp is required, please install it and re-run this script"

if [ "$toolsMissing" == "1" ] ; then
    echo "Required tools are missing, please install and re-run."
    exit 1
fi

echo "Checking for wget or curl...."
downloadTool=""
verify_command wget "wget is not installed, checking for curl..."
if [ "$toolsMissing" == "0" ] ; then
    echo "wget found"
    downloadTool="wget -nv $WGET_OPTIONS --output-document=$PLUGIN_ROOT/cloudbees-license.jpi"
else
    toolsMissing="0"
    verify_command curl "curl is not installed"
    if [ "$toolsMissing" == "0" ] ; then
        echo "curl found"
        downloadTool="curl -sS $CURL_OPTIONS --output $PLUGIN_ROOT/cloudbees-license.jpi"
    fi
fi

if [ "$toolsMissing" == "1" ] ; then
    echo "curl or wget are required, please install one of these and re-run."
    exit 1
fi

#TODO Add checks to ensure that user executing script has filesystem permission to make update
#TODO ensure that downloaded plugin is installed using the right user && group

hinit versions
hput versions "9.33" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.33.1/cloudbees-license.hpi"
hput versions "9.32" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.32.1/cloudbees-license.hpi"
hput versions "9.31" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.31.1/cloudbees-license.hpi"
hput versions "9.30" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.30.1/cloudbees-license.hpi"
hput versions "9.28" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.28.1/cloudbees-license.hpi"
hput versions "9.27" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.27.1/cloudbees-license.hpi"
hput versions "9.26" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.26.1/cloudbees-license.hpi"
hput versions "9.24" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.24.1/cloudbees-license.hpi"
hput versions "9.20" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.20.1/cloudbees-license.hpi"
hput versions "9.18.1" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.18.1.1/cloudbees-license.hpi"
hput versions "9.18" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.18.0.1/cloudbees-license.hpi"
hput versions "9.17" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.17.1/cloudbees-license.hpi"
hput versions "9.13" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.13.1/cloudbees-license.hpi"
hput versions "9.11" "https://jenkins-updates.cloudbees.com/download/plugins/cloudbees-license/9.11.1/cloudbees-license.hpi"

hinit backports
hput backports "9.33.1" "backport"
hput backports "9.32.1" "backport"
hput backports "9.31.1" "backport"
hput backports "9.30.1" "backport"
hput backports "9.28.1" "backport"
hput backports "9.27.1" "backport"
hput backports "9.26.1" "backport"
hput backports "9.24.1" "backport"
hput backports "9.20.1" "backport"
hput backports "9.18.0.1" "backport"
hput backports "9.18.1.1" "backport"
hput backports "9.13.1" "backport"
hput backports "9.11.1" "backport"

hput backports "9.34" "ok"
hput backports "9.34.1" "ok"
hput backports "9.35" "ok"
hput backports "9.35.1" "ok"
hput backports "9.36" "ok"
hput backports "9.36.1" "ok"
hput backports "9.37" "ok"
hput backports "9.38" "ok"
hput backports "9.39" "ok"
hput backports "9.39.1" "ok"
hput backports "9.40" "ok"
hput backports "9.41" "ok"
hput backports "9.42" "ok"

echo ""

# find the currently installed version of the cloudbees-license plugin
#echo "$PLUGIN_ROOT/cloudbees-license/META-INF/MANIFEST.MF"
#strip out any odd control chars!
CURRENT_PLUGIN_VERSION=$(grep Plugin-Version $PLUGIN_ROOT/cloudbees-license/META-INF/MANIFEST.MF | awk '{ print $2 };' | tr -d '\000-\031')
echo "CURRENT_PLUGIN_VERSION = $CURRENT_PLUGIN_VERSION"


# Check if the user does not need to upgrade (ie. 9.34 or newer already)
hget backports $CURRENT_PLUGIN_VERSION

if [ "$PLUGIN_URL" == "ok" ] ; then
    echo "Currently installed plugin version $CURRENT_PLUGIN_VERSION already supports the new license.  No upgrade nescecary"
    exit 0
fi

# Check if the  user has already upgraded
hget backports $CURRENT_PLUGIN_VERSION
if [ "$PLUGIN_URL" == "backport" ] ; then
    echo "Currently installed plugin version $CURRENT_PLUGIN_VERSION already supports the new license.  No upgrade nescecary"
    exit 0
fi

# lookup the updated plugin download url
hget versions $CURRENT_PLUGIN_VERSION

 if [[ -z "$PLUGIN_URL" ]]; then
    echo "No updated plugin exists for $CURRENT_PLUGIN_VERSION"
    echo "Please contact support@cloudbees.com"
    exit 1
fi

# backup the currently installed plugin
echo "Backing up the currently installed license plugin"
mv $PLUGIN_ROOT/cloudbees-license.jpi $PLUGIN_ROOT/cloudbees-license.bak
chown $JENKINS_USER $PLUGIN_ROOT/cloudbees-license.bak
chgrp $JENKINS_GROUP $PLUGIN_ROOT/cloudbees-license.bak

# now download the plugin
echo "Downloading updated plugin from $PLUGIN_URL"
$downloadTool $PLUGIN_URL
chown $JENKINS_USER $PLUGIN_ROOT/cloudbees-license.jpi
chgrp $JENKINS_GROUP $PLUGIN_ROOT/cloudbees-license.jpi

echo "Plugin updated successfully, please restart your Jenkins instance to complete the installation"