openrowingmonitor/bin/updateopenrowingmonitor.sh

#!/bin/bash
#
#  Open Rowing Monitor, https://github.com/laberning/openrowingmonitor
#
#  Update script for Open Rowing Monitor, use at your own risk!
#

# treat unset variables as an error when substituting
set -u
# exit when a command fails
set -e

print() {
  echo "$@"
}

cancel() {
  print "$@"
  exit 1
}

ask() {
  local prompt default reply

  if [[ ${2:-} = 'Y' ]]; then
    prompt='Y/n'
    default='Y'
  elif [[ ${2:-} = 'N' ]]; then
    prompt='y/N'
    default='N'
  else
    prompt='y/n'
    default=''
  fi

  while true; do
    echo -n "$1 [$prompt] "
    read -r reply </dev/tty

    if [[ -z $reply ]]; then
      reply=$default
    fi

    case "$reply" in
      Y*|y*) return 0 ;;
      N*|n*) return 1 ;;
    esac
  done
}

# updates the software to the most recent git commit from origin
update_branch() {
  print "Stopping Open Rowing Monitor..."
  sudo systemctl stop openrowingmonitor

  print "Fetching new version of Open Rowing Monitor from branch \"$CURRENT_BRANCH\"..."
  sudo git fetch --force origin
  sudo git fetch --force --tags origin
  sudo git reset --hard origin/$CURRENT_BRANCH

  print "Updating Runtime dependencies..."
  sudo rm -rf node_modules
  sudo rm -rf build
  sudo npm ci
  sudo npm run build

  print "Starting Open Rowing Monitor..."
  sudo systemctl start openrowingmonitor

  browserservice="webbrowserkiosk.service"
  if systemctl --all --type service | grep -q "$browserservice" && systemctl is-active --quiet "$browserservice";then
      echo "Restarting Graphical User Interface..."
      sudo systemctl restart "$browserservice"
  fi

  print
  print "Update complete, Open Rowing Monitor now has the following exciting new features:"
  git log --reverse --pretty=format:"- %s" $LOCAL_VERSION..HEAD
}

# allows switching to another git feature branch by passing the -b parameter
switch_branch() {
  print "Stopping Open Rowing Monitor..."
  sudo systemctl stop openrowingmonitor

  print "Switching Open Rowing Monitor to branch \"$CURRENT_BRANCH\"..."
  sudo git fetch --force origin
  sudo git fetch --force --tags origin
  sudo git branch -D $CURRENT_BRANCH 2> /dev/null || true
  sudo git checkout -b $CURRENT_BRANCH origin/$CURRENT_BRANCH

  print "Updating Runtime dependencies..."
  sudo rm -rf node_modules
  sudo rm -rf build
  sudo npm ci
  sudo npm run build

  print "Starting Open Rowing Monitor..."
  sudo systemctl start openrowingmonitor

  browserservice="webbrowserkiosk.service"
  if systemctl --all --type service | grep -q "$browserservice" && systemctl is-active --quiet "$browserservice";then
      echo "Restarting Graphical User Interface..."
      sudo systemctl restart "$browserservice"
  fi

  print
  print "Switch to branch \"$CURRENT_BRANCH\" complete, Open Rowing Monitor now has the following exciting new features:"
  git log --reverse --pretty=format:"- %s" $LOCAL_VERSION..HEAD
}

CURRENT_DIR=$(pwd)
SCRIPT_DIR="$( cd "$(dirname "${BASH_SOURCE[0]}")" &> /dev/null && pwd )"
INSTALL_DIR="$(dirname "$SCRIPT_DIR")"
GIT_REMOTE="https://github.com/laberning/openrowingmonitor.git"

cd $INSTALL_DIR

CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)
LOCAL_VERSION=$(git rev-parse HEAD)

print "Update script for Open Rowing Monitor"
print

if getopts "b:" arg; then
  if [ $CURRENT_BRANCH = $OPTARG ]; then
    cancel "No need to switch to branch \"$OPTARG\", it is already the active branch"
  fi

  echo "Checking for the existence of branch \"$OPTARG\"..."
  if [ $(git ls-remote --heads $GIT_REMOTE 2>/dev/null|awk -F 'refs/heads/' '{print $2}'|grep -x "$OPTARG"|wc -l) = 0 ]; then
    cancel "Branch \"$OPTARG\" does not exist in the repository, can not switch"
  fi

  if ask "Do you want to switch from branch \"$CURRENT_BRANCH\" to branch \"$OPTARG\"?" Y; then
    print "Switching to branch \"$OPTARG\"..."
    sudo git reset --hard origin/$CURRENT_BRANCH
    CURRENT_BRANCH=$OPTARG
    switch_branch
  else
    cancel "Stopping update - please run without -b parameter to do a regular update"
  fi
else
  print "Checking for new version..."
  REMOTE_VERSION=$(git ls-remote $GIT_REMOTE refs/heads/$CURRENT_BRANCH | awk '{print $1;}')

  if [ "$LOCAL_VERSION" = "$REMOTE_VERSION" ]; then
      print "You are using the latest version of Open Rowing Monitor from branch \"$CURRENT_BRANCH\"."
  else
    if ask "A new version of Open Rowing Monitor is available from branch \"$CURRENT_BRANCH\". Do you want to update?" Y; then
      update_branch
    fi
  fi
fi

cd $CURRENT_DIR