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  • require 'puppet_litmus/rake_tasks' if Bundler.rubygems.find_name('puppet_litmus').any?
    require 'puppetlabs_spec_helper/rake_tasks'
    require 'puppet-syntax/tasks/puppet-syntax'
    require 'puppet_blacksmith/rake_tasks' if Bundler.rubygems.find_name('puppet-blacksmith').any?
    require 'github_changelog_generator/task' if Bundler.rubygems.find_name('github_changelog_generator').any?
    require 'puppet-strings/tasks' if Bundler.rubygems.find_name('puppet-strings').any?
    
    def changelog_user
      return unless Rake.application.top_level_tasks.include? "changelog"
      returnVal = nil || JSON.load(File.read('metadata.json'))['author']
      raise "unable to find the changelog_user in .sync.yml, or the author in metadata.json" if returnVal.nil?
      puts "GitHubChangelogGenerator user:#{returnVal}"
      returnVal
    end
    
    def changelog_project
      return unless Rake.application.top_level_tasks.include? "changelog"
    
      returnVal = nil
      returnVal ||= begin
        metadata_source = JSON.load(File.read('metadata.json'))['source']
        metadata_source_match = metadata_source && metadata_source.match(%r{.*\/([^\/]*?)(?:\.git)?\Z})
    
        metadata_source_match && metadata_source_match[1]
      end
    
      raise "unable to find the changelog_project in .sync.yml or calculate it from the source in metadata.json" if returnVal.nil?
    
      puts "GitHubChangelogGenerator project:#{returnVal}"
      returnVal
    end
    
    def changelog_future_release
      return unless Rake.application.top_level_tasks.include? "changelog"
      returnVal = "v%s" % JSON.load(File.read('metadata.json'))['version']
      raise "unable to find the future_release (version) in metadata.json" if returnVal.nil?
      puts "GitHubChangelogGenerator future_release:#{returnVal}"
      returnVal
    end
    
    PuppetLint.configuration.send('disable_relative')
    
    if Bundler.rubygems.find_name('github_changelog_generator').any?
      GitHubChangelogGenerator::RakeTask.new :changelog do |config|
        raise "Set CHANGELOG_GITHUB_TOKEN environment variable eg 'export CHANGELOG_GITHUB_TOKEN=valid_token_here'" if Rake.application.top_level_tasks.include? "changelog" and ENV['CHANGELOG_GITHUB_TOKEN'].nil?
        config.user = "#{changelog_user}"
        config.project = "#{changelog_project}"
        config.future_release = "#{changelog_future_release}"
        config.exclude_labels = ['maintenance']
        config.header = "# Change log\n\nAll notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org)."
        config.add_pr_wo_labels = true
        config.issues = false
        config.merge_prefix = "### UNCATEGORIZED PRS; GO LABEL THEM"
        config.configure_sections = {
          "Changed" => {
            "prefix" => "### Changed",
            "labels" => ["backwards-incompatible"],
          },
          "Added" => {
            "prefix" => "### Added",
            "labels" => ["feature", "enhancement"],
          },
          "Fixed" => {
            "prefix" => "### Fixed",
            "labels" => ["bugfix"],
          },
        }
      end
    else
      desc 'Generate a Changelog from GitHub'
      task :changelog do
        raise <<EOM
    The changelog tasks depends on unreleased features of the github_changelog_generator gem.
    Please manually add it to your .sync.yml for now, and run `pdk update`:
    ---
    Gemfile:
      optional:
        ':development':
          - gem: 'github_changelog_generator'
            git: 'https://github.com/skywinder/github-changelog-generator'
            ref: '20ee04ba1234e9e83eb2ffb5056e23d641c7a018'
            condition: "Gem::Version.new(RUBY_VERSION.dup) >= Gem::Version.new('2.2.2')"
    EOM
      end
    end