require 'tab'
require 'macos'
require 'extend/ARGV'
require 'bottle_version'

# TODO: use options={} for some arguments.

def bottle_filename f, bottle_revision=nil
  name = f.name.downcase
  version = f.stable.version
  bottle_revision ||= f.bottle.revision.to_i if f.bottle
  "#{name}-#{version}#{bottle_native_suffix(bottle_revision)}"
end

def install_bottle? f, warn=false
  return true if f.downloader and defined? f.downloader.local_bottle_path \
    and f.downloader.local_bottle_path

  return false if ARGV.build_from_source?
  return false unless f.pour_bottle?
  return false unless f.build.used_options.empty?
  return false unless bottle_current?(f)
  if f.bottle.cellar != :any && f.bottle.cellar != HOMEBREW_CELLAR.to_s
    opoo "Building source; cellar of #{f}'s bottle is #{f.bottle.cellar}" if warn
    return false
  end

  true
end

def built_as_bottle? f
  return false unless f.installed?
  tab = Tab.for_keg(f.installed_prefix)
  tab.built_as_bottle
end

def bottle_current? f
  f.bottle and f.bottle.url and not f.bottle.checksum.empty?
end

def bottle_file_outdated? f, file
  filename = file.basename.to_s
  return nil unless f and f.bottle and f.bottle.url \
    and filename.match(bottle_regex)

  bottle_ext = filename[bottle_native_regex, 1]
  bottle_url_ext = f.bottle.url[bottle_native_regex, 1]

  bottle_ext && bottle_url_ext && bottle_ext != bottle_url_ext
end

def bottle_new_revision f
  return 0 unless bottle_current? f
  f.bottle.revision + 1
end

def bottle_native_suffix revision=nil
  ".#{bottle_tag}#{bottle_suffix(revision)}"
end

def bottle_suffix revision=nil
  revision = revision.to_i > 0 ? ".#{revision}" : ""
  ".bottle#{revision}.tar.gz"
end

def bottle_native_regex
  /(\.#{bottle_tag}\.bottle\.(\d+\.)?tar\.gz)$/o
end

def bottle_regex
  Pathname::BOTTLE_EXTNAME_RX
end

def bottle_root_url f
  root_url = f.bottle.root_url
  root_url ||= 'https://downloads.sf.net/project/machomebrew/Bottles'
end

def bottle_url f
  "#{bottle_root_url(f)}/#{bottle_filename(f)}"
end

def bottle_tag
  case MacOS.version
  when "10.8", "10.7", "10.5"
    MacOS.cat
  when "10.6"
    Hardware::CPU.is_64_bit? ? :snow_leopard : :snow_leopard_32
  else
    Hardware::CPU.type == :ppc ? Hardware::CPU.family : MacOS.cat
  end
end

def bottle_filename_formula_name filename
  path = Pathname.new filename
  version = BottleVersion.parse(path).to_s
  basename = path.basename.to_s
  basename.rpartition("-#{version}").first
end