Rakefile

require 'rake'
require 'erb'
require 'fileutils'
require 'pathname'

include FileUtils

desc "Install into the users home"
task :install do
  Dir['*'].each do |file|
    case file
      when 'Rakefile', 'README', 'README.markdown'
        next
      when 'xprofile', 'Xdefaults', 'xmodmap'
        link_file file, home_slash(".#{file}") if `uname -s`.include? 'Linux'
      when 'bin'
        unless File.directory? home_slash('bin')
          mkdir home_slash('bin'), :verbose => false
        end

        Dir['bin/*'].each do |bin_file|
          link_file bin_file, home_slash(bin_file)
        end
      else
        link_file file, home_slash(".#{file}")
    end
  end
end

desc "Installs the stuff in homebrew I need"
task :homebrew do
  formulas = %w(
    ack
    figlet
    htop
    macvim
    midnight-commander
    tmux
    mercurial
    tree
    vim
    watch
    wget
    zsh
    zsh-lovers
    navi
    cheat
  )
  exec "brew", "install", *formulas
end

namespace :link do
  desc 'Link cheats'
  task :cheats do
    personal_cheatsheets = home_slash('.config/cheat/cheatsheets/personal')
    rmdir personal_cheatsheets if personal_cheatsheets.exist? && personal_cheatsheets.directory? && !personal_cheatsheets.symlink?
    rm personal_cheatsheets if personal_cheatsheets.symlink?
    ln_s dotfiles_slash('knowledge/cheat'), home_slash('.config/cheat/cheatsheets/personal')
  end
end

namespace :perl do
  desc 'Install the various perl dependencies'
  task :deps do
    dependencies = [
      '--force Alien::libtickit',
      'Tickit',
      'Tickit::Widgets',
      'Tickit::Widget::ScrollBox',
      'utf8::all',
      'lib::relative',
      'IPC::System::Simple',
      'Graphics::Color',
      'Term::ReadLine',
      'File::Path::Expand',
      'Array::Utils',
    ]

    dependencies.each do |line|
      system "cpanm install #{line}" or raise 'failed'
    end
  end
end

def home() ENV['HOME'] end
def home_slash(name) Pathname(home).join(name) end
def dotfiles_slash(name) Pathname(__FILE__).dirname.join(name) end

def link_file(source, target)
  action = if File.symlink?(target)
    if $replace_all
      :overwrite
    else
      print "Overwrite #{target}? [yNqa] "
      case $stdin.gets.chomp
        when 'a' then ($replace_all = true) and :overwrite
        when 'y' then :overwrite
        when 'q' then exit
        else :skip
      end
    end
  else
    :link
  end

  if [:link, :overwrite].include? action
    if action == :overwrite
      puts "Overwriting #{target}"
      rm target, :verbose => false
    end
    ln_s File.join(Dir.pwd, source), target, :verbose => true
  elsif action == :skip
    puts "skipping #{target}"
  end
end

def each_bundle
  bundles = `git submodule --quiet foreach 'echo $path'`.map { |line| line.chomp }
  bundles.each do |bundle_path|
    cd bundle_path, :verbose => false do
      yield bundle_path
    end
  end
end