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#!/bin/bash

################################################################################
#   Does a mass upgrade of your Homebrew apps and allows you to interactively
#   select which Cask apps to upgrade.
#
#   Author: Derrek Young, derrekyoung.com
#   Requirements:
#       Homebrew http://brew.sh/
#       Cask https://caskroom.github.io/
#
################################################################################

# Will exclude these apps from updating. Modify these to suite your needs. Use the exact brew/cask name and separate names with a pipe |
BREW_EXCLUDES=""
CASK_EXCLUDES=""

cleanup-all() {
  echo -e "Cleaning up..."
  brew update && brew cleanup && brew cask cleanup
  echo -e "Clean finished.\n\n"
}

# Upgrade all the Homebrew apps
brew-upgrade-main() {
  echo -e "Updating Brew apps... \n"

  var=$(brew list)

  if [ -n "$var" ]; then
    for item in $var; do
      [[ $item =~ ^ ( $BREW_EXCLUDES ) $ ]] && echo "Automatically excluding $item" && continue

      echo "Upgrading $item"
      brew upgrade $item
    done
  else
    echo -e "All Brew cellars are up to date  ¯\_(ツ)_/¯ \n"
  fi

  echo -e "Brew upgrade finished.\n\n"
}

# Get info for a single cask
cask-info() {
  echo -e "Installed versions of $1: ";
  ls /usr/local/Caskroom/$1

  info=$(brew cask info $1)
  IFS=$'\n' lines=( $info )

  echo "Available cask info for ${lines[1]}, ${lines[0]}"
}

# Get info for all casks
cask-lookup() {
  for c in $(brew cask list); do
    brew cask info $c
  done
}

# List info for every Cask installed. (This is kind of noisy.)
cask-list() {
  for c in $(brew cask list); do
    echo -e "Installed versions of $c: "
    ls /usr/local/Caskroom/$c

    info=$(brew cask info $c)
    IFS=$'\n' lines=( $info )

    echo "Available cask info for ${lines[1]}, ${lines[0]}"
    echo ""
  done
}

# Menu to selectively upgrade available casks
cask-upgrade-menu() {
  local caskItem="$1"

  echo "Install update for $caskItem?"
  select yn in Update Skip; do
  case $yn in
    Update)
      echo "Updating $caskItem..."

      echo "Uninstalling $caskItem"
      brew cask uninstall --force "$caskItem"

      echo "Re-installing $caskItem"
      brew cask install "$caskItem"

      echo -e "$caskItem finished. \n"

      break
    ;;
    Skip)
      echo -e "Skipping $caskItem... (╯°□°)╯︵ ┻━┻ \n"
      break
    ;;
    *)
      echo "Please choose 1 or 2"
    ;;
  esac
  done
}

# Selectively upgrade casks
cask-upgrade-main() {
  echo -e "Updating Cask apps... \n"

  # brew update && brew cask cleanup

  var=$(cask-lookup | grep -B 3 'Not installed' | sed -e '/^http/d;/^Not/d;/:/!d' | cut -d ":" -f1)

  if [ -n "$var" ]; then
    echo -e "All available updates:"
    echo -e "$var \n"

    for caskItem in $var; do
      [[ $caskItem =~ ^ ( $CASK_EXCLUDES ) $ ]] && echo "Automatically excluding $caskItem" && continue

      cask-info "$caskItem"

      cask-upgrade-menu "$caskItem"
    done
  else
    echo -e "All casks are up to date  ¯\_(ツ)_/¯ \n"
  fi

  echo -e "Cask upgrade finished.\n"
}

cleanup-all

brew-upgrade-main

cask-upgrade-main