#!/bin/bash
#
# develop_brew_cask
#
# symlink repo directories into homebrew cellar so that the
# 'brew cask' command will use the current devel branch.
#
# Saves the production directories under new names.
#

set -e;              # exit on any uncaught error
set +o histexpand;   # don't expand history expressions

script_dir="$(/usr/bin/dirname $0)"
cd "$script_dir"

git_root="$(git rev-parse --show-toplevel)"
brew_prefix="$(brew --prefix)"
cellar_dir="$brew_prefix/Cellar/brew-cask"
version_dir=$(/bin/ls "$cellar_dir/" | sort | tail -1)

if [ -z "$version_dir" ]; then
    echo "Can't get version dir under $cellar_dir/"
    exit 1;
fi
cd "$cellar_dir/$version_dir"

if [ -e "production_rubylib" ]; then
    echo brew-cask is already set up for development
    exit 1
else
    mv rubylib production_rubylib
    mv Casks   production_Casks
    ln -s "$git_root/Casks" .
    ln -s "$git_root/lib"   rubylib
    cd "$brew_prefix/Library/Taps/phinze-cask"
    mv lib   production_lib
    mv Casks production_Casks
    ln -s "$git_root/Casks" .
    ln -s "$git_root/lib"   .
    echo brew-cask is now in development mode
fi

#