#!/usr/bin/env jruby

# Copyright (c) 2007-2022 Andy Maleh
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

require 'os'

if OS.mac?
  require 'fileutils'
  home_dir = `echo ~`.strip
  
  [
    ['.bash_profile', '.bashrc'],
    ['.zprofile', '.zshrc']
  ].each do |profile_and_fallback|
    shell_profile_file_name = profile_and_fallback.first
    shell_profile_file_name = profile_and_fallback.last if !File.exist?("#{home_dir}/#{shell_profile_file_name}")
    shell_profile_file = "#{home_dir}/#{shell_profile_file_name}"
    FileUtils.touch(shell_profile_file)
    shell_profile = File.read(shell_profile_file)
    glimmer_source_statement = 'export JRUBY_OPTS="$JRUBY_OPTS -J-XstartOnFirstThread"'
    unless shell_profile.split("\n").detect {|line| line.include?(glimmer_source_statement) }
      File.write(shell_profile_file, "#{shell_profile}\n#{glimmer_source_statement}")
    end
    puts "~/#{shell_profile_file_name} has been modified"
  end
  
  puts <<~OUTPUT
    
    Before using `glimmer` or `girb`, start a new shell session in the same directory (open a new terminal tab and go to the same directory) or run the following command:
    
    export JRUBY_OPTS="$JRUBY_OPTS -J-XstartOnFirstThread"
    
    Afterwards, you may run the following commands:
    
    glimmer
    girb
    
  OUTPUT
end