class Commands::Install

def determine_install_method
  best = @base_command.environment.best_install_method
  @method = :http if best == :http and @method == :export
  case
  when (best == :http and @method != :http)
    msg = "Cannot install using subversion because `svn' cannot be found in your PATH"
  when (best == :export and (@method != :export and @method != :http))
    msg = "Cannot install using #{@method} because this project is not under subversion."
  when (best != :externals and @method == :externals)
    msg = "Cannot install using externals because vendor/plugins is not under subversion."
  end
  if msg
    puts msg
    exit 1
  end
  @method
end

def initialize(base_command)
  @base_command = base_command
  @method = :http
  @options = { :quiet => false, :revision => nil, :force => false }
end

def options
  OptionParser.new do |o|
    o.set_summary_indent('  ')
    o.banner =    "Usage: #{@base_command.script_name} install PLUGIN [PLUGIN [PLUGIN] ...]"
    o.define_head "Install one or more plugins."
    o.separator   ""
    o.separator   "Options:"
    o.on(         "-x", "--externals",
                  "Use svn:externals to grab the plugin.",
                  "Enables plugin updates and plugin versioning.") { |v| @method = :externals }
    o.on(         "-o", "--checkout",
                  "Use svn checkout to grab the plugin.",
                  "Enables updating but does not add a svn:externals entry.") { |v| @method = :checkout }
    o.on(         "-e", "--export",
                  "Use svn export to grab the plugin.",
                  "Exports the plugin, allowing you to check it into your local repository. Does not enable updates or add an svn:externals entry.") { |v| @method = :export }
    o.on(         "-q", "--quiet",
                  "Suppresses the output from installation.",
                  "Ignored if -v is passed (rails plugin -v install ...)") { |v| @options[:quiet] = true }
    o.on(         "-r REVISION", "--revision REVISION",
                  "Checks out the given revision from subversion or git.",
                  "Ignored if subversion/git is not used.") { |v| @options[:revision] = v }
    o.on(         "-f", "--force",
                  "Reinstalls a plugin if it's already installed.") { |v| @options[:force] = true }
    o.separator   ""
    o.separator   "You can specify plugin names as given in 'plugin list' output or absolute URLs to "
    o.separator   "a plugin repository."
  end
end

def parse!(args)
  options.parse!(args)
  if args.blank?
    puts options
    exit 1
  end
  environment = @base_command.environment
  install_method = determine_install_method
  puts "Plugins will be installed using #{install_method}" if $verbose
  args.each do |name|
    ::Plugin.find(name).install(install_method, @options)
  end
rescue StandardError => e
  puts "Plugin not found: #{args.inspect}"
  puts e.inspect if $verbose
  exit 1
end