require 'fileutils'

def build_extension(name, arch)
  objects = []
  mkdir_p $tempdir unless File.exist? $tempdir
  Dir.glob("*.c").each do |f|
    objname = File.join( $tempdir, File.basename( f.gsub(/\.c$/, '.o') ) )
    objects << objname

      args = []
      args << "-I."
      args << "-I../../../../platform/shared/ruby/include"
      args << "-I../../../../platform/shared"

    if $android
      args << "-I../../../../platform/shared/ruby/linux"
      args << "-I../../../../platform/shared/ruby/generated"
      cc_compile f, $tempdir, args or exit 1

    else
      args << "-I../../../../platform/shared/ruby/iphone"
      args << "-D_XOPEN_SOURCE"
      args << "-D_DARWIN_C_SOURCE"
      args << "-isysroot #{$sdkroot}"
      args << "-fno-common"
      args << "-arch #{arch}"
      args << "-O2"
      args << "-o #{objname}"
      args << "-c"
      args << f
      cmdline = $gccbin + ' ' + args.join(' ')
      puts cmdline
      puts `#{cmdline}`
      exit unless $? == 0

    end
  end

  mkdir_p $targetdir unless File.exist? $targetdir

  if $android
    cc_ar File.join( $targetdir, 'lib' + name + '.a' ), Dir.glob($tempdir + "/**/*.o") or exit 1

  else
    args = []
    args << 'rcs'
    args << File.join( $targetdir, 'lib' + name + '.a' )
    args += objects
    cmdline = $arbin + ' ' + args.join(' ')
    puts cmdline
    puts `#{cmdline}`
    exit unless $? == 0

  end
end

def build_fat_file(name, archs)
  archs.each do |arch|
    build_extension(name, arch)
  end
  
  args = []
  args << "-create"
  args << "-output lib#{name}.a"
  archs.each do |arch|
    args << "lib#{name}-#{arch}.a"
  end
  cmdline = $lipobin + ' ' + args.join(' ')
  puts `#{cmdline}`
  exit unless $? == 0
end

namespace "build" do
  task :config do
    if ENV['ANDROID_API_LEVEL'] != nil
      $targetdir = ENV['TARGET_TEMP_DIR']
      $tempdir = ENV['TEMP_FILES_DIR']
      require File.dirname(__FILE__) + '/../../../../platform/android/build/androidcommon.rb'

      setup_ndk(ENV['ANDROID_NDK'],ENV['ANDROID_API_LEVEL'])

      $android = true
    else
      $bindir = ENV['PLATFORM_DEVELOPER_BIN_DIR']
      raise "PLATFORM_DEVELOPER_BIN_DIR is not set" if $bindir.nil?
      $sdkroot = ENV['SDKROOT']
      raise "SDKROOT is not set" if $sdkroot.nil?
      $targetdir = ENV['TARGET_TEMP_DIR']
      raise "TARGET_TEMP_DIR is not set" if $targetdir.nil?
      $tempdir = ENV['TEMP_FILES_DIR']
      raise "TEMP_FILES_DIR is not set" if $tempdir.nil?
      $arch = ENV['ARCHS']
      raise "ARCHS is not set" if $arch.nil?
      $gccbin = $bindir + '/gcc-4.0'
      $arbin = $bindir + '/ar'
      $lipobin = 'lipo'

    end
  end

  task :all => :config do
    build_extension('digest', $arch)
  end
end

task :default => "build:all"