#!/usr/bin/env bash

# main repo: https://github.com/cstenglein/raspiblitz-web

# command info
if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "--help" ] || [ "$1" = "-help" ]; then
  echo "Manage RaspiBlitz Web UI"
  echo "blitz.web.ui.sh on [?GITHUBUSER] [?REPO] [?BRANCH]"
  echo "blitz.web.ui.sh update"
  echo "blitz.web.ui.sh off"
  exit 0
fi

# check if started with sudo
if [ "$EUID" -ne 0 ]; then 
  echo "error='run as root'"
  exit 1
fi

DEFAULT_GITHUB_USER="cstenglein"
DEFAULT_GITHUB_REPO="raspiblitz-web"
DEFAULT_GITHUB_BRANCH="master"

###################
# ON / INSTALL
###################
if [ "$1" = "1" ] || [ "$1" = "on" ]; then

  if [ "$2" != "" ]; then
    DEFAULT_GITHUB_USER="$2"
  fi

  if [ "$3" != "" ]; then
    DEFAULT_GITHUB_REPO="$3"
  fi

  if [ "$4" != "" ]; then
    DEFAULT_GITHUB_BRANCH="$4"
  fi

  echo "# INSTALL WebUI"
  # clean all source
  rm -r /root/blitz_web 2>/dev/null
  rm -r /root/${DEFAULT_GITHUB_REPO} 2>/dev/null
  rm -r /home/blitzapi/blitz_web 2>/dev/null
  rm -r /home/blitzapi/${DEFAULT_GITHUB_REPO} 2>/dev/null
  
  cd /home/blitzapi || exit 1
  if ! git clone https://github.com/${DEFAULT_GITHUB_USER}/${DEFAULT_GITHUB_REPO}.git; then
    echo "error='git clone failed'"
    exit 1
  fi
  mv /home/blitzapi/${DEFAULT_GITHUB_REPO} /home/blitzapi/blitz_web
  cd blitz_web || exit 1
  if ! git checkout ${DEFAULT_GITHUB_BRANCH}; then
    echo "error='git checkout failed'"
    exit 1
  fi

  echo "# Compile WebUI"
  /home/admin/config.scripts/bonus.nodejs.sh on
  source <(/home/admin/config.scripts/bonus.nodejs.sh info)
  if ! npm install --global yarn; then
    echo "error='install yarn failed'"
    exit 1
  fi
  ${NODEPATH}/yarn config set --home enableTelemetry 0
  if ! ${NODEPATH}/yarn install; then
    echo "error='yarn install failed'"
    exit 1
  fi
  if ! ${NODEPATH}/yarn build; then
    echo "error='yarn build failed'"
    exit 1
  fi

  rm -r /var/www/public/* 2>/dev/null
  cp -r /home/blitzapi/blitz_web/build/* /var/www/public
  chown www-data:www-data -R /var/www/public

  # install info
  echo "# The WebUI is now available under:"
  echo "# http://[LOCAIP]"

  exit 0
fi

###################
# UPDATE
###################
if [ "$1" = "update" ]; then
  webuiActive=$(sudo ls /home/blitzapi/blitz_web/README.md | grep -c "README")
  if [ "${webuiActive}" != "0" ]; then
    echo "# Update Web API"
    cd /home/blitzapi/blitz_web
    currentBranch=$(git rev-parse --abbrev-ref HEAD)
    echo "# updating local repo ..."
    oldCommit=$(git rev-parse HEAD)
    git fetch
    git reset --hard origin/${currentBranch}
    newCommit=$(git rev-parse HEAD)
    if [ "${oldCommit}" != "${newCommit}" ]; then
      source <(/home/admin/config.scripts/bonus.nodejs.sh info)
      ${NODEPATH}/yarn install
      ${NODEPATH}/yarn build
      sudo rm -r /var/www/public/* 2>/dev/null
      sudo cp -r /home/blitzapi/blitz_web/build/* /var/www/public
      sudo chown www-data:www-data -R /var/www/public
    else
      echo "# no code changes"
    fi
    echo "# BRANCH ---> ${currentBranch}"
    echo "# old commit -> ${oldCommit}"
    echo "# new commit -> ${newCommit}"
    echo "# reload WebUI in your browser"
    exit 0
  else
    echo "# webui not active"
    exit 1
  fi
fi

###################
# OFF / UNINSTALL
###################
if [ "$1" = "0" ] || [ "$1" = "off" ]; then

  echo "# UNINSTALL WebUI"
  sudo rm -r /root/blitz_web 2>/dev/null
  sudo rm -r /home/blitzapi/blitz_web 2>/dev/null
  sudo rm -r /var/www/public/* 2>/dev/null
  exit 0
fi