script for upgrading a BMLT Root Server

upgrade-bmlt.sh

#!/bin/sh
# Script for upgrading a BMLT server.
# Basic Usage: < ./bmlt-upgrade.sh >  this will download the new release put it in a folder called new_main_server.
# when you have verified everything works you can run < ./bmlt-upgrade.sh complete >
# this will copy main_server to old_main server and new_main_server to main_server

# if url provided we use that, otherwise just get latest release.
if [[ -z "$1" ]];then
	RELEASE_URL=$(curl -sL "https://api.github.com/repos/bmlt-enabled/bmlt-root-server/releases/latest" | grep -o '"browser_download_url": *"[^"]*' | grep -o '[^"]*$')
	# if jq is available curl -sL "https://api.github.com/repos/bmlt-enabled/bmlt-root-server/releases/latest" | jq -r  '.assets[].browser_download_url'
else
	RELEASE_URL=$1
fi

# if parameter eq complete, we complete the process.
if [[ "$RELEASE_URL" == "complete" ]]
then
    echo "Deleting previous archived version"
    rm -rf old_main_server/
    echo "Moving previous version to be archived version."
    mv main_server/ old_main_server/
    echo "Moving new version to be the current one."
    mv new_main_server/ main_server/
    echo "You can now view the site under http://[bmlt-host]/main_server."
else
    echo "Deleting older zip if it is there"
    rm $(basename "$RELEASE_URL")
    rm -rf new_main_server
    echo "Downloading the newest version"
    wget "$RELEASE_URL"
    echo "Unpacking..."
    unzip $(basename "$RELEASE_URL") -d temp/
    echo "Moving from temporary location to migration path"
    mkdir new_main_server
    mv temp/main_server/* new_main_server
    echo "Removing temporary location"
    rm -rf temp/
    
    # this step usually isn't needed on shared hosting
    #echo "Fixing permissions"
    #chown -R www-data: new_main_server/
fi