configure do
  check_d_compiler "ldc2"
  check_c_compiler "x86_64-w64-mingw32-gcc"
  check_program "mformat"
end

class Image < Builder
  def run(options)
    unless @cache.up_to_date?(@target, nil, @sources, @env)
      print_run_message("Image <target>#{@target}<reset>", nil)
      File.binwrite(@target, "\0" * (1440 * 1024))
      system(*%W[mformat -i #{@target} -f 1440 ::])
      system(*%W[mmd -i #{@target} ::/EFI])
      system(*%W[mmd -i #{@target} ::/EFI/BOOT])
      system(*%W[mcopy -i #{@target} #{@sources.first} ::/EFI/BOOT])
      @cache.register_build(@target, nil, @sources, @env)
    end
    true
  end
end

uefi_env = env "uefi" do |env|
  env.add_builder(Image)
  env["sources"] = glob("src/**/*.d")
  env["sources"] += glob("uefi-d/source/**/*.d")
  env["DFLAGS"] += %w[-mtriple=x86_64-unknown-windows-coff --betterC -release -O2]
  env["D_IMPORT_PATH"] += %w[uefi-d/source]
  env["LD"] = "x86_64-w64-mingw32-gcc"
  env["LDFLAGS"] += %w[-nostdlib -Wl,-dll -shared -Wl,--subsystem,10 -e efi_main]
  env["LDCMD"] = %w[${LD} -o ${_TARGET} ${LDFLAGS} ${_SOURCES} ${LIBDIRPREFIX}${LIBPATH} ${LIBLINKPREFIX}${LIBS}]
  env.Program("^/BOOTX64.EFI", "${sources}")
  env.Disassemble("^/BOOTX64.txt", "^/BOOTX64.EFI")
  env.Image("^/efi-loader.img", "^/BOOTX64.EFI")
end

task "run" do
	sh %W[qemu-system-x86_64 -bios OVMF.fd -hda #{uefi_env.expand("^/efi-loader.img")}]
end