install

#!/usr/bin/env ruby
# Inspired by https://github.com/Homebrew/install/blob/63e779e5d6cc1cd7ddefda9c0eb404687d1a1c79/install
DOTFILES_REPOSITORY = "#{ENV["HOME"]}/.dotfiles".freeze
DOTFILES_REPO = "https://github.com/exalted/dotfiles.git".freeze
USER_BIN = "#{ENV["HOME"]}/bin".freeze

module Tty
  module_function

  def blue
    bold 34
  end

  def red
    bold 31
  end

  def reset
    escape 0
  end

  def bold(n = 39)
    escape "1;#{n}"
  end

  def underline
    escape "4;39"
  end

  def escape(n)
    "\033[#{n}m" if STDOUT.tty?
  end
end

class Array
  def shell_s
    cp = dup
    first = cp.shift
    cp.map { |arg| arg.gsub " ", "\\ " }.unshift(first).join(" ")
  end
end

def ohai(*args)
  puts "#{Tty.blue}>>>#{Tty.bold} #{args.shell_s}#{Tty.reset}"
end

def warn(warning)
  puts "#{Tty.red}Warning#{Tty.reset}: #{warning.chomp}"
end

# ? This overrides built-in system command
def system(*args)
  abort "Failed during: #{args.shell_s}" unless Kernel.system(*args)
end

##
## script ......................................................................
##

abort <<-EOABORT if File.directory?(DOTFILES_REPOSITORY)
The dotfiles appears to be installed already. Run `dotfiles` to update.
EOABORT

system "/bin/mkdir #{USER_BIN}" unless File.directory? "#{USER_BIN}"

ohai "Downloading and installing dotfiles…"

system "git clone #{DOTFILES_REPO} #{DOTFILES_REPOSITORY}"

system "ln -sf #{DOTFILES_REPOSITORY}/bin/dotfiles #{USER_BIN}/dotfiles"

system "#{USER_BIN}/dotfiles"

warn "#{USER_BIN} is not in your PATH." unless ENV["PATH"].split(":").include? "#{USER_BIN}"

ohai "Installation successful!"
puts

# Use the shell's audible bell.
print "\a"

ohai "What now?"

puts "Whenever you feel like, run `dotfiles` to keep your environment up-to-date."