## CONSTANTS

REPO_URL=$1
REPO_BRANCH=$2
FORCE=${3:-false}

RAILS_ENV=production
KEY_LENGTH=10

## FUNCTIONS

function install_mise {
  if [[ ! -f $HOME/.local/bin/mise ]]; then
    echo -n 'installing mise...'
    curl -s https://mise.run | sh 2>&1 >/dev/null
    echo OK
  fi

  if [[ ! -f $HOME/.bashrc ]] || ! grep -q '.local/bin/mise activate bash' $HOME/.bashrc; then
    echo "eval \"\$($HOME/.local/bin/mise activate bash)\"" >>$HOME/.bashrc
    echo "cd /opt/$USER" >>$HOME/.bashrc
    source $HOME/.bashrc
    mise version
  fi

  if [[ ! -f $HOME/.config/mise/config.toml ]] || ! grep -q 'RAILS_ENV' $HOME/.config/mise/config.toml; then
    mise self-update -y 2>&1 >/dev/null
    mise settings add idiomatic_version_file_enable_tools ruby
    mise set --global RAILS_ENV=production
    mise set --global SECRET_KEY_BASE=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c $KEY_LENGTH)
    echo mise install successfully for production with SECRET_KEY_BASE
  fi

}

function pull_repo {
  if [[ ! -d .git ]]; then
    git config --global init.defaultBranch $REPO_BRANCH
	git config pull.rebase true
    git init
    git remote add origin $REPO_URL
  fi

  git branch --set-upstream-to=origin/$REPO_BRANCH $REPO_BRANCH    

  if git fetch origin $REPO_BRANCH --dry-run --verbose 2>&1 | grep -q " =.*\-> origin\/$REPO_BRANCH"; then
    set +Eue
    $FORCE || exit 100 # means no change
    set -Eue
  fi

  git checkout -q $REPO_BRANCH
  git pull --tags
}

function install_rails {
  mise install
  mise exec -- bundle check >/dev/null || mise exec -- bundle install --quiet
  mise exec -- rails db:prepare
  mise exec -- rails assets:precompile
}

function assert_params {
  [[ $# -ge 2 ]] || (echo '2 params required: REPO_URL REPO_BRANCH [FORCE]' && exit 1)
}

function link_to_config {
  for file in /etc/$USER/*; do
    local destination=$(basename $file)
    case "$destination" in
    \*)
      echo "WARNING: no configuration file provided, you may copy from ./config/*_sample.yml to location: /etc/$USER"
      ;;
    service.conf)
      echo "environment (service.conf) converted to .env.production"
      ln -sf $(realpath $file) .env.production
      ;;
    *.yml | *.yaml)
      echo "yaml file: $(realpath $file) -> config"
      ln -sf $(realpath $file) config/
      ;;
    esac
  done
}

## MAIN
set -Eue
assert_params $*

mkdir -p /opt/$USER
cd /opt/$USER

pull_repo
link_to_config
install_mise
install_rails