Contents

require('gems')
require('active_support/all')

module Thengem
  GemVersions = Struct.new(
    :date, :gem_name, :date_range, :major_release
  ) do
    def self.call(options)
      gem_name = options.fetch(:gem_name)
      date = if options.fetch(:date_string, nil)
               Date.parse(options.fetch(:date_string))
             end
      date_range = options.fetch(:date_range, 6.months)
      major_release = options.fetch(:major_release, nil)
      new(date, gem_name, date_range, major_release).call
    end

    def call
      versions_in_range.map do |v|
        [v['number'], Date.parse(v['built_at']).strftime('%F')]
      end
    end

    private

    def versions_in_range
      versions.select { |v| include_version?(v) }
    end

    def versions
      @_versions ||= ::Gems.versions(gem_name)
    end

    def include_version?(version)
      if major_release
        return false unless version_belongs_to_major_release?(version)
      end
      if date
        return false unless version_in_date_range?(version)
      end
      true
    end

    def version_belongs_to_major_release?(version)
      /^#{major_release}/ =~ version['number']
    end

    def version_in_date_range?(version)
      built_at = Date.parse(version['built_at'])
      built_at <= date && built_at >= gems_back_to
    end

    def gems_back_to
      @_gems_back_to ||= date - 6.months
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
thengem-0.1.1	lib/thengem/gem_versions.rb
thengem-0.1.0	lib/thengem/gem_versions.rb