Class: Railsthemes::Ensurer

Inherits:
Object
  • Object
show all
Extended by:
Logging
Defined in:
lib/railsthemes/ensurer.rb

Constant Summary collapse

@@already_checked = 
false

Class Method Summary collapse

Methods included from Logging

debug, logger, logger, logger=, verbose

Class Method Details

.ask_to_install_unsupported ⇒ Object 



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# File 'lib/railsthemes/ensurer.rb', line 95

def self.ask_to_install_unsupported
  logger.warn "WARNING\n"

  if File.exists?('Gemfile.lock')
    logger.warn <<-EOS
Your Gemfile.lock file indicates that you are using a version of Rails that
is not officially supported by RailsThemes.
    EOS
  else
    logger.warn <<-EOS
We could not find a Gemfile.lock file in this directory. This could indicate
that you are not in a Rails application, or that you are not using Bundler
(which probably means that you are using a version of Rails that is not
officially supported by RailsThemes.)
    EOS
  end
  logger.warn <<-EOS
While Rails applications that are less than version 3.1 are not officially
supported, you can try installing anyway, or can stop. If you cancel the
install before downloading, we can refund your purchase. If you install,
we cannot guarantee that RailsThemes will work for your app. You may have
to do some custom changes, which might be as easy as copying files,
but which may be more complicated.
  EOS

  unless Safe.yes? 'Do you still wish to install the theme? [y/N]'
    Safe.log_and_abort 'Halting.'
  end
end

.ensure_bundle_is_up_to_date ⇒ Object 



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# File 'lib/railsthemes/ensurer.rb', line 125

def self.ensure_bundle_is_up_to_date
  logger.warn "Checking bundle..."
  result = Safe.system_call('bundle check')
  if result !~ /The Gemfile's dependencies are satisfied/
    Safe.log_and_abort <<-EOS
Running `bundle check` resulted in the following issues:
#{result}
Please run `bundle` and try installing again.
EOS
  end
  logger.warn "Done checking bundle."
end

.ensure_clean_install_possible(options = {}) ⇒ Object

checks if we can cleanly install into the current working directory



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# File 'lib/railsthemes/ensurer.rb', line 8

def self.ensure_clean_install_possible options = {}
  return if @@already_checked unless options[:force]
  ensure_in_rails_root
  ensure_bundle_is_up_to_date
  ensure_railsthemes_is_not_in_gemfile
  ensure_vcs_is_clean
  ensure_rails_version_is_valid
  ensure_installer_is_up_to_date(options[:server]) if options[:server]
  @@already_checked = true
end

.ensure_in_rails_root ⇒ Object 



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# File 'lib/railsthemes/ensurer.rb', line 19

def self.ensure_in_rails_root
  unless File.directory?('app') && File.directory?('public')
    Safe.log_and_abort 'Must be in the Rails root directory to use this gem.'
  end
end

.ensure_installer_is_up_to_date(server) ⇒ Object 



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# File 'lib/railsthemes/ensurer.rb', line 58

def self.ensure_installer_is_up_to_date server
  logger.warn "Checking installer version..."
  url = server + '/installer/version'
  logger.debug "installer version url: #{url}"
  begin
    response = Utils.get_url url
  rescue SocketError => e
    logger.debug e.message
    logger.debug e.backtrace * "\n"
    Safe.log_and_abort 'We could not reach the RailsThemes server to download the theme. Please check your internet connection and try again.'
  rescue Exception => e
    logger.debug e.message
    logger.debug e.backtrace * "\n"
  end

  if response && response.code.to_s == '200'
    server_recommended_version_string = response.body
    server_recommended_version = Gem::Version.new(server_recommended_version_string)
    local_installer_version = Gem::Version.new(Railsthemes::VERSION)

    if server_recommended_version > local_installer_version
      Safe.log_and_abort <<-EOS
Your version is older than the recommended version.
Your version: #{Railsthemes::VERSION}
Recommended version: #{server_recommended_version_string}
EOS
    else
      logger.debug "server recommended version: #{server_recommended_version_string}"
    end
  else
    logger.debug 'Got an error'
    logger.debug response
    Safe.log_and_abort 'There was an issue checking your installer version.'
  end
  logger.warn "Done checking installer version."
end

.ensure_rails_version_is_valid ⇒ Object 



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# File 'lib/railsthemes/ensurer.rb', line 51

def self.ensure_rails_version_is_valid
  unless File.exists?('Gemfile.lock') &&
      Gem::Version.new('3.1') <= Railsthemes::GemfileUtils.rails_version
    ask_to_install_unsupported
  end
end

.ensure_railsthemes_is_not_in_gemfile(gemfile_contents = nil) ⇒ Object 



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# File 'lib/railsthemes/ensurer.rb', line 138

def self.ensure_railsthemes_is_not_in_gemfile gemfile_contents = nil
  gemfile_contents ||= Utils.read_file('Gemfile.lock')
  specs = Utils.gemspecs(gemfile_contents)
  if specs.any? { |x| x.name == 'railsthemes' }
    Safe.log_and_abort "You should not install the railsthemes installer in your Gemfile.\nPlease remove and try again."
  end
end

.ensure_vcs_is_clean ⇒ Object 



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# File 'lib/railsthemes/ensurer.rb', line 25

def self.ensure_vcs_is_clean
  logger.warn "Checking version control..."
  result = ''
  variety = ''
  if File.directory?('.git')
    variety = 'Git'
    result = Safe.system_call('git status -s')
  elsif File.directory?('.hg')
    variety = 'Mercurial'
    result = Safe.system_call('hg status')
  elsif File.directory?('.svn')
    variety = 'Subversion'
    result = Safe.system_call('svn status')
  end

  unless result.size == 0
    Safe.log_and_abort <<-EOS

    #{variety} reports that you have the following pending changes:
    #{result}
Please roll back or commit the changes before proceeding to ensure that you can roll back after installing if you want.
    EOS
  end
  logger.warn "Done checking version control."
end