build.sh

#!/usr/bin/env bash
set -e

# Install brew, use brew to install system files and then use R and python
# package managers to install their recommended packages/modules

# Determine which mode we are to operate in
#
#+NOTE: allow a quiet mode which uses brew bundle and a verbose mode which
#       reels off each package individually and has a progress bar
while getopts "qh" option; do
  case ${option} in
    q)  mode="quiet";;
    h)  mode="help";;
    *)  mode="verbose";;
  esac
done


#-- Functions -------------------------------------------------------------------

# Function to decide on brew location by system.
# We are going to use the defaults for brew on MacOS and linux so if you have
# a custom setup then this needs to be edited
install_brew () {
  # install brew
  case $OSTYPE in
    darwin*)
      /usr/bin/ruby -e "$(curl -fsSL "`
        `"https://raw.githubusercontent.com/Homebrew/install/master/install)"
      ;;
    *) echo "    -- Your OS is not currently supported, exiting"; exit 1 ;;
  esac


  ## Refresh your command index to make sure everything is available
  hash -r
}

#+WIP
install_verbose() {
  # need to know how many things are being installed
  length=`cat Brewfile | wc -l`

  echo ""
  # for each item get the row from Brewfile and install it, then echo percentage
  for i in `seq 1 $length`
  do
    brew install `
      sed "$((i))q;d" Brewfile |
      sed "s/[a-z]* '\(.*\)'/\1/"
    ` 1>/dev/null 2>>install.log

    printf "            $((100 * i / length))%% complete\r"
  done

}



#-- Program ---------------------------------------------------------------------

if [[ $mode == 'help' ]]; then
  echo "Help coming soon"
  exit 1
fi

## check internet connection - writing output to /dev/null
## we just want the exit code
/usr/bin/env curl -D- -s http://www.google.com 1>/dev/null
if [[ $? -eq 0 ]]; then
  echo "* Installing software"

  ## Make sure your PATH variable is as we expect
  if [[ ! -x ~/.profile ]]; then touch ~/.profile; fi

  echo $PATH | grep -q "/usr/local/bin" || test=0
  if [[ $test == 0 ]]; then
    export PATH=$brew_loc:$PATH
  fi

  ## check to see if brew already exists, if it does skip installation
  command -v brew >/dev/null && echo "* brew exists, skipping" || install_brew

  # Install from Brewfile
  echo "    -- installing brew software, this may take some time"

  if [[ $mode == 'quiet' ]]; then
    brew tap homebrew/bundle
    brew bundle 1>/dev/null
  else
    install_verbose
  fi

  rm Brewfile

  # Install common R packages (I work too hard, redirecting outputs...)
  printf "    -- installing R packages\n       \u25B3 this can take some time\n"
  R --no-save <<'  END'
    for (package in c('tidyverse', 'rmarkdown', 'shiny', 'mlr')) {
      message(paste("    \u25b3  Installing ", package))
      capture.output(
        install.packages(package),
        file = "install.log",
        append = TRUE
      )
    }
  END


  # Install common python modules
  echo "    -- installing python modules"
  pip3 install -r requirements.txt 1>>install.log

  printf "** Install complete \n    - for information please see install.log"

else # curl failed to connect to google.com

  echo "* There is no internet connection, exiting."

fi