#to make this work, run
#rake install --rakefile INSTALL_ON_OSX

require 'rake'

task :install do
  puts "this currently is untested, prepare for tragedy"

  puts "****************************************************************************"
  puts "******************************  HELLO! *************************************"
  puts "****************************************************************************"
  puts ""
  puts "We're going to install a ton of stuff to get Diaspora running on your box."
  puts "Grab a tasty beverage - this might take a while. Then let's get started!"
  print "Hit enter once you have a drink! "
  input = STDIN.gets
  
  BREW_INSTALLED = installed?('brew')
  RVM_INSTALLED = installed?('rvm')
  MYSQL_INSTALLED = installed?('mysql')
  REDIS_INSTALLED = installed?('redis-server')
  IMAGEMAGICK_INSTALLED = installed?('mogrify')
  XCODE_INSTALLED = installed?('gcc')

  unless XCODE_INSTALLED
    puts "Sadly, you need to install XCode before running this script. :("
    puts "You can get it from your OSX install DVD, or download it from Apple's developer page."
    Process.exit
  end
  puts "Hooray! You have XCode already!"

  unless BREW_INSTALLED
    puts "Installing homebrew..."
    system("ruby -e \"$(curl -fsSL https://gist.github.com/raw/323731/install_homebrew.rb)\"")
  end
  system("brew update")
  puts "homebrew is installed. Great job!"

  unless RVM_INSTALLED
    puts "Installing rvm..."
    system("curl -s https://rvm.beginrescueend.com/install/rvm -o rvm-installer ; chmod +x rvm-installer ; ./rvm-installer")
    system("echo '[[ -s \"$HOME/.rvm/scripts/rvm\" ]] && . \"$HOME/.rvm/scripts/rvm\" # Load RVM function' >> ~/.bash_profile")
    system("rm rvm-installer")
    if `. ~/.bash_profile; type rvm | head -1` != "rvm is a function\n"
      puts "Meh, rvm install failed. Come talk to us in irc, at http://webchat.freenode.net/?channels=diaspora"
      Process.exit
    end
  end
  puts "rvm is installed. Great job!"

  puts "Installing ruby enterprise edition (ree)..."
  system(". ~/.bash_profile; rvm install ree")
  $stdout.flush

  puts "Setting up your gemset and .rvmrc..."
  system(". ~/.bash_profile; rvm use ree; rvm gemset create diaspora")
  system("echo 'rvm use ree@diaspora' >> .rvmrc")
  puts "Done installing ree, creating gemset, and setting up .rvmrc!"

  unless IMAGEMAGICK_INSTALLED
    puts 'Installing imagemagick...'
    system("brew install imagemagick")
  end
  puts 'imagemagick is installed. Great job!'

  unless MYSQL_INSTALLED
    puts 'Installing mysql...'
    system("brew install mysql")
    puts 'Configuring for first time use. Type in your Mac password when it asks.'
    system("unset TMPDIR")
    system("sudo mysql_install_db --verbose --user=`whoami` --basedir=\"$(brew --prefix mysql)\" --datadir=/usr/local/var/mysql --tmpdir=/tmp")
    system("mkdir -p ~/Library/LaunchAgents")
    plist_file = `brew list mysql | grep plist`.strip
    system("cp #{plist_file} ~/Library/LaunchAgents/com.mysql.mysqld.plist")
    system("launchctl load -w ~/Library/LaunchAgents/com.mysql.mysqld.plist")
  end
  puts 'mysql is installed. Great job!'

  unless REDIS_INSTALLED
    puts 'Installing redis...'
    system("brew install redis")
  end
  puts 'redis is installed. Great job!'

  puts 'Installing bundler...'
  system(". ~/.bash_profile; rvm use ree@diaspora; gem install bundler")
  puts 'bundler is installed. Great Job!'

  puts 'Installing diaspora gems...'
  system(". ~/.bash_profile; rvm use ree@diaspora; bundle install")

  puts "Creating and migrating your database..."
  system(". ~/.bash_profile; rvm use ree@diaspora; rake db:create; rake db:migrate")

  puts "Setting up your default app configuration..."
  system("cp config/app_config.yml.example config/app_config.yml")

  puts "Setting up your default database configuration..."
  system("cp config/database.yml.example config/database.yml")

  puts "****************************************************************************"
  puts "*****************************  CONGRATS! ***********************************"
  puts "****************************************************************************"
  puts ""
  puts "Everything is installed! How was that beer?"
  puts "Run the following commands to start up the Diaspora server:"
  puts ""
  puts "source ~/.bash_profile"
  puts "cd .."
  puts "cd diaspora"
  puts "script/server"
  puts ""
  puts "Next time, all you'll need to do is script/server."
  puts "Once you've started script/server, visit your local Diaspora in your browser at http://localhost:3000"
end

def installed?(program)
  `which #{program}`=='' ? false : true
end