rails-templating/install.sh

#!/usr/bin/bash

# CONSTANTS

BASEDIR=$(dirname "$0")
DEBIAN_PACKAGES="curl git build-essential libssl-dev libreadline-dev zlib1g-dev libyaml-dev "
BASH_RELOAD=false

# FUNCTIONS

function install_rails_templating {
  if [[ ! -d $HOME/.local/rails ]]; then
    mkdir -p $HOME/.local/rails
    ln -sf $(realpath $BASEDIR/src/railsrc) $HOME/.railsrc
    ln -sf $(realpath $BASEDIR/src/template.rb) $HOME/.local/rails/template.rb
    echo rails-templating installed succesfully!
  else
    echo rails-templating already installed!
  fi
}

function install_ruby {
  if ! command -v ruby >/dev/null; then
    ruby_version=$(wget_semver github jdx/ruby)
    mise use --global ruby@${ruby_version}

    tee $HOME/.gemrc &>/dev/null <<EOF
# Skip documentation generation
install: --no-document
update: --no-document
EOF

    # fix the gem update --system permission denied!
    chmod u+w -R $HOME/.local/share/mise/installs/ruby
    mise exec -- gem update --system
  else
    echo 'ruby already installed!'
  fi

  if ! command -v rails >/dev/null; then
    mise exec -- gem install rails
  else
    echo 'rails already installed!'
  fi
}

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
  fi

  if ! command -v mise >/dev/null; then
    source $HOME/.bashrc
    mise version
    BASH_RELOAD=true
  fi

  if [[ ! -f $HOME/.config/mise/config.toml ]]; then
    mise self-update -y 2>&1 >/dev/null
    mise settings set experimental true
    mise use -g usage
    mise settings add idiomatic_version_file_enable_tools ruby
    echo mise install successfully for development
  else
    echo mise already installed!
  fi
}

function install_miaou_bash {
  if ! command -v curl >/dev/null; then
    sudo apt install -y git curl
  fi

  if [[ ! -d /opt/miaou-bash ]]; then
    curl https://git.artcode.re/miaou/miaou-bash/raw/branch/main/install.sh | sudo bash -s
  else
    echo miaou-bash already installed!
  fi
}

function install_requirements {
  if [[ -n $(dpkg -l $DEBIAN_PACKAGES 2>&1 | tail -n +6 | grep -v ^ii) ]]; then
    sudo apt-get install -y $DEBIAN_PACKAGES
  else
    echo requirements already installed!
  fi
}

function optional_bash_reload {
  if $BASH_RELOAD; then
    echo 'reloading bash for mise'
    exec bash
  fi
}

function warn_on_gitconfig_missing {
  if [[ ! -f $HOME/.gitconfig ]]; then
    echo 'WARNING: git config missing'
    echo 'before creating a rails project, you should probably configure some user settings:'
    echo '  git config --global --edit'
  fi
}

# MAIN

set -Eue
install_requirements
install_miaou_bash
install_mise
install_ruby
install_rails_templating

warn_on_gitconfig_missing
optional_bash_reload