bundle

#!/usr/bin/env ruby
# frozen_string_literal: true

#
# This file was generated by Bundler.
#
# The application 'bundle' is installed as part of a gem, and
# this file is here to facilitate running it.
#

require 'rubygems'

m = Module.new do
  module_function

  def invoked_as_script?
    File.expand_path($PROGRAM_NAME) == File.expand_path(__FILE__)
  end

  def env_var_version
    ENV['BUNDLER_VERSION']
  end

  # rubocop:todo Metrics/PerceivedComplexity
  # rubocop:todo Metrics/MethodLength
  def cli_arg_version # rubocop:todo Metrics/CyclomaticComplexity
    return unless invoked_as_script? # don't want to hijack other binstubs
    unless 'update'.start_with?(ARGV.first || ' ')
      return
      # rubocop:todo Style/CommentedKeyword
    end # must be running `bundle update`

    # rubocop:enable Style/CommentedKeyword

    bundler_version = nil
    update_index = nil
    ARGV.each_with_index do |a, i|
      if update_index && update_index.succ == i && a =~ Gem::Version::ANCHORED_VERSION_PATTERN
        bundler_version = a
      end
      next unless a =~ /\A--bundler(?:[= ](#{Gem::Version::VERSION_PATTERN}))?\z/

      bundler_version = Regexp.last_match(1)
      update_index = i
    end
    bundler_version
  end
  # rubocop:enable Metrics/MethodLength
  # rubocop:enable Metrics/PerceivedComplexity

  def gemfile
    gemfile = ENV['BUNDLE_GEMFILE']
    return gemfile if gemfile && !gemfile.empty?

    File.expand_path('../Gemfile', __dir__)
  end

  def lockfile
    lockfile =
      case File.basename(gemfile)
      when 'gems.rb' then gemfile.sub(/\.rb$/, gemfile)
      else "#{gemfile}.lock"
      end
    File.expand_path(lockfile)
  end

  def lockfile_version
    return unless File.file?(lockfile)

    lockfile_contents = File.read(lockfile)
    unless lockfile_contents =~ /\n\nBUNDLED WITH\n\s{2,}(#{Gem::Version::VERSION_PATTERN})\n/
      return
    end

    Regexp.last_match(1)
  end

  def bundler_version
    @bundler_version ||=
      env_var_version || cli_arg_version ||
      lockfile_version
  end

  def bundler_requirement
    return "#{Gem::Requirement.default}.a" unless bundler_version

    bundler_gem_version = Gem::Version.new(bundler_version)

    requirement = bundler_gem_version.approximate_recommendation

    return requirement unless Gem::Version.new(Gem::VERSION) < Gem::Version.new('2.7.0')

    requirement += '.a' if bundler_gem_version.prerelease?

    requirement
  end

  def load_bundler!
    ENV['BUNDLE_GEMFILE'] ||= gemfile

    activate_bundler
  end

  # rubocop:todo Metrics/MethodLength
  def activate_bundler # rubocop:todo Metrics/AbcSize
    gem_error = activation_error_handling do
      gem 'bundler', bundler_requirement
    end
    return if gem_error.nil?

    require_error = activation_error_handling do
      require 'bundler/version'
    end
    if require_error.nil? && Gem::Requirement.new(bundler_requirement).satisfied_by?(Gem::Version.new(Bundler::VERSION))
      return
    end

    warn "Activating bundler (#{bundler_requirement}) failed:\n#{gem_error.message}\n\nTo install the version of bundler this project requires, run `gem install bundler -v '#{bundler_requirement}'`"
    exit 42
  end
  # rubocop:enable Metrics/MethodLength

  def activation_error_handling
    yield
    nil
  rescue StandardError, LoadError => e
    e
  end
end

m.load_bundler!

load Gem.bin_path('bundler', 'bundle') if m.invoked_as_script?