require 'rubygems'

begin

  require 'erlake'
rescue LoadError

  puts "You don't have the erlake gem.  Run `rake setup` or install the erlake gem yourself."
end

GemDependencies = [
  {:name => "erlake", :version => ">=0.1.0"}
]

task :setup do
  puts "Checking for gems that need to be installed."
  gems = Gem::SourceIndex.from_installed_gems

  GemDependencies.each do |dep|

    if gems.search(dep[:name], dep[:version]).empty?

      puts "Installing dependency: #{dep[:name]}, #{dep[:version]}"

      begin
        require 'rubygems/dependency_installer'
        di = Gem::DependencyInstaller.new()
        di.install dep[:name], dep[:version]

      rescue LoadError # < rubygems 1.0.1
        require 'rubygems/remote_installer'
        Gem::RemoteInstaller.new.install(dep.name, dep.version_requirements)
      end

    end

  end

  puts "And done."
end

# This unless-statement is here to prevent this rakefile from crashing if the
# Erlake gem is not present.  As you can see above, we print a nice message
# telling the user to install the gem and crashing from an uninitialized
# constant error before we can print is a Bad Thing.

exit(1) unless defined?(Erlake)

ErlangProject = Erlake::ErlangProject

this_dir = File.dirname(__FILE__)

eunit = ErlangProject.new('eunit', File.join(this_dir, 'lib/eunit')) do |proj|

  # Required ordering.
  proj.sources = %w(
    src/eunit_autoexport.erl
    src/eunit_striptests.erl
    src/eunit.erl
    src/eunit_tests.erl
    src/eunit_server.erl
    src/eunit_proc.erl
    src/eunit_serial.erl
    src/eunit_test.erl
    src/eunit_lib.erl
    src/eunit_data.erl
    src/eunit_tty.erl
    src/code_monitor.erl
    src/file_monitor.erl
    src/autoload.erl
  )

  proj.include_paths = ["include"]
  proj.warnings = %w(+warn_unused_vars +nowarn_shadow_vars +warn_unused_import)
end

mochiweb = ErlangProject.new('mochiweb', File.join(this_dir, 'lib/mochiweb'))

smerl = ErlangProject.new('smerl', File.join(this_dir, 'lib/smerl')) do |proj|
  proj.sources = ['smerl.erl']
  proj.output_path = '../../ebin'
end

recess = ErlangProject.new('recess', this_dir) do |proj|
  proj.dependencies = [eunit, mochiweb, smerl]

  # The include_paths must have one path ending in "include/eunit" or else
  # eunit freaks out and crashes.
  proj.test_include_paths = ["./lib/include/eunit"]
end

recess.use_globally!