class Bundler::GemHelper

# File lib/bundler/gem_helper.rb, line 18
def gemspec(&block)
  gemspec = instance.gemspec
  block.call(gemspec) if block
  gemspec
end

# File lib/bundler/gem_helper.rb, line 14
def install_tasks(opts = {})
  new(opts[:dir], opts[:name]).install
end

# File lib/bundler/gem_helper.rb, line 27
def initialize(base = nil, name = nil)
  @base = (base ||= SharedHelpers.pwd)
  gemspecs = name ? [File.join(base, "#{name}.gemspec")] : Dir[File.join(base, "{,*}.gemspec")]
  raise "Unable to determine name from existing gemspec. Use :name => 'gemname' in #install_tasks to manually set it." unless gemspecs.size == 1
  @spec_path = gemspecs.first
  @gemspec = Bundler.load_gemspec(@spec_path)
end

# File lib/bundler/gem_helper.rb, line 74
def build_gem
  file_name = nil
  sh("#{gem_command} build -V #{spec_path.shellescape}".shellsplit) do
    file_name = File.basename(built_gem_path)
    SharedHelpers.filesystem_access(File.join(base, "pkg")) {|p| FileUtils.mkdir_p(p) }
    FileUtils.mv(built_gem_path, "pkg")
    Bundler.ui.confirm "#{name} #{version} built to pkg/#{file_name}."
  end
  File.join(base, "pkg", file_name)
end

# File lib/bundler/gem_helper.rb, line 35
def install
  built_gem_path = nil

  desc "Build #{name}-#{version}.gem into the pkg directory."
  task "build" do
    built_gem_path = build_gem
  end

  desc "Build and install #{name}-#{version}.gem into system gems."
  task "install" => "build" do
    install_gem(built_gem_path)
  end

  desc "Build and install #{name}-#{version}.gem into system gems without network access."
  task "install:local" => "build" do
    install_gem(built_gem_path, :local)
  end

  desc "Create tag #{version_tag} and build and push #{name}-#{version}.gem to #{gem_push_host}\n" \
       "To prevent publishing in RubyGems use `gem_push=no rake release`"
  task "release", [:remote] => ["build", "release:guard_clean",
                                "release:source_control_push", "release:rubygem_push"] do
  end

  task "release:guard_clean" do
    guard_clean
  end

  task "release:source_control_push", [:remote] do |_, args|
    tag_version { git_push(args[:remote]) } unless already_tagged?
  end

  task "release:rubygem_push" do
    rubygem_push(built_gem_path) if gem_push?
  end

  GemHelper.instance = self
end

# File lib/bundler/gem_helper.rb, line 85
def install_gem(built_gem_path = nil, local = false)
  built_gem_path ||= build_gem
  cmd = "#{gem_command} install #{built_gem_path}"
  cmd += " --local" if local
  _, status = sh_with_status(cmd.shellsplit)
  unless status.success?
    raise "Couldn't install gem, run `gem install #{built_gem_path}' for more detailed output"
  end
  Bundler.ui.confirm "#{name} (#{version}) installed."
end

# File lib/bundler/gem_helper.rb, line 119
def allowed_push_host
  @gemspec.metadata["allowed_push_host"] if @gemspec.respond_to?(:metadata)
end

# File lib/bundler/gem_helper.rb, line 138
def already_tagged?
  return false unless sh(%w[git tag]).split(/\n/).include?(version_tag)
  Bundler.ui.confirm "Tag #{version_tag} has already been created."
  true
end

# File lib/bundler/gem_helper.rb, line 109
def built_gem_path
  Dir[File.join(base, "#{name}-*.gem")].sort_by {|f| File.mtime(f) }.last
end

# File lib/bundler/gem_helper.rb, line 148
def clean?
  sh_with_status(%w[git diff --exit-code])[1].success?
end

# File lib/bundler/gem_helper.rb, line 152
def committed?
  sh_with_status(%w[git diff-index --quiet --cached HEAD])[1].success?
end

# File lib/bundler/gem_helper.rb, line 212
def gem_command
  ENV["GEM_COMMAND"] ? ENV["GEM_COMMAND"] : "gem"
end

# File lib/bundler/gem_helper.rb, line 204
def gem_key
  Bundler.settings["gem.push_key"].to_s.downcase if Bundler.settings["gem.push_key"]
end

# File lib/bundler/gem_helper.rb, line 208
def gem_push?
  !%w[n no nil false off 0].include?(ENV["gem_push"].to_s.downcase)
end

# File lib/bundler/gem_helper.rb, line 123
def gem_push_host
  env_rubygems_host = ENV["RUBYGEMS_HOST"]
  env_rubygems_host = nil if
    env_rubygems_host && env_rubygems_host.empty?

  allowed_push_host || env_rubygems_host || "rubygems.org"
end

# File lib/bundler/gem_helper.rb, line 113
def git_push(remote = "")
  perform_git_push remote
  perform_git_push "#{remote} --tags"
  Bundler.ui.confirm "Pushed git commits and tags."
end

# File lib/bundler/gem_helper.rb, line 144
def guard_clean
  clean? && committed? || raise("There are files that need to be committed first.")
end

# File lib/bundler/gem_helper.rb, line 174
def name
  gemspec.name
end

# File lib/bundler/gem_helper.rb, line 131
def perform_git_push(options = "")
  cmd = "git push #{options}"
  out, status = sh_with_status(cmd.shellsplit)
  return if status.success?
  raise "Couldn't git push. `#{cmd}' failed with the following output:\n\n#{out}\n"
end

# File lib/bundler/gem_helper.rb, line 98
def rubygem_push(path)
  cmd = %W[#{gem_command} push #{path}]
  cmd << "--key" << gem_key if gem_key
  cmd << "--host" << allowed_push_host if allowed_push_host
  unless allowed_push_host || Bundler.user_home.join(".gem/credentials").file?
    raise "Your rubygems.org credentials aren't set. Run `gem push` to set them."
  end
  sh_with_input(cmd)
  Bundler.ui.confirm "Pushed #{name} #{version} to #{gem_push_host}"
end

# File lib/bundler/gem_helper.rb, line 185
def sh(cmd, &block)
  out, status = sh_with_status(cmd, &block)
  unless status.success?
    cmd = cmd.shelljoin if cmd.respond_to?(:shelljoin)
    raise(out.empty? ? "Running `#{cmd}` failed. Run this command directly for more detailed output." : out)
  end
  out
end

# File lib/bundler/gem_helper.rb, line 178
def sh_with_input(cmd)
  Bundler.ui.debug(cmd)
  SharedHelpers.chdir(base) do
    abort unless Kernel.system(*cmd)
  end
end

# File lib/bundler/gem_helper.rb, line 194
def sh_with_status(cmd, &block)
  Bundler.ui.debug(cmd)
  SharedHelpers.chdir(base) do
    outbuf = IO.popen(cmd, :err => [:child, :out], &:read)
    status = $?
    block.call(outbuf) if status.success? && block
    [outbuf, status]
  end
end

# File lib/bundler/gem_helper.rb, line 156
def tag_version
  sh %W[git tag -m Version\ #{version} #{version_tag}]
  Bundler.ui.confirm "Tagged #{version_tag}."
  yield if block_given?
rescue RuntimeError
  Bundler.ui.error "Untagging #{version_tag} due to error."
  sh_with_status %W[git tag -d #{version_tag}]
  raise
end

# File lib/bundler/gem_helper.rb, line 166
def version
  gemspec.version
end

# File lib/bundler/gem_helper.rb, line 170
def version_tag
  "v#{version}"
end