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module Jekyll
  module VersionFilter
    def get_version_type(version)
      releases = @context.registers[:site].data['project']['releases']

releases.each do |type, versions|
        return type if versions.has_key?(version)
      end

return nil
    end

def get_documentation_link(v)
        releases = @context.registers[:site].data['project']['releases']

releases.each do |type, versions|
          versions.each do |version, info|
            return info['documentation_link'] if version == v
          end
        end

return nil
    end

def get_version_link(targetVersion, page)
        defaultUrl = '/' + targetVersion + '/'

menuByVersion = @context.registers[:site].data['menu']['version']
        return defaultUrl if not menuByVersion.has_key?(targetVersion)

expectedUrl = page.gsub(/^\/[\d\.]+\//, defaultUrl)

menuByVersion[targetVersion].each do |section, pages|
            pages.each do |title, url|
                return url if url == expectedUrl
            end
        end

return defaultUrl
    end

def get_edit_link(currentPath)
        project = @context.registers[:site].data['project']

# Extract the version number from the current path
        version = currentPath.delete_prefix('/').split('/').first()
        if version == '' or version == 'releases'
            version = project['default_version']
        end

# Edit the page on that version branch if the version is supported;
        # otherwise, use the default version branch
        versionType = get_version_type(version)
        if not (versionType == 'next' or versionType == 'current')
            version = project['default_version']
        end

return 'https://github.com/thephpleague/' + project['repository'] + '/edit/' + version + '/docs/' + currentPath
    end
  end
end

Liquid::Template.register_filter(Jekyll::VersionFilter)