Sha256: c01a717d4dffa7394c49fc2a9baa396561249a84649cdb174000457ad0520d12
Contents?: true
Size: 1.53 KB
Versions: 9
Compression:
Stored size: 1.53 KB
Contents
# frozen_string_literal: true
require 'zip'
module Lcms
module Engine
class LtiExporter
class << self
include Rails.application.routes.url_helpers
def perform(resource)
cartridge = create_cartridge resource
files = [{ name: 'imsmanifest.xml', data: cartridge.manifest }]
files.concat cartridge.links
create_zip_stream(files).read
end
private
def build_items(resource)
resource.children.map do |c|
{
children: build_items(c),
title: c.title,
url: (lti_document_url(c.document.id, protocol: :https) if c.lesson? && c.document.present?)
}
end
end
def create_cartridge(resource)
# NOTE: For now work only with Modules
# Subject - Grade - Module
parent = {
children: [{
children: [{
children: build_items(resource),
identifier: SecureRandom.hex(17),
title: resource.title
}],
title: resource.metadata['grade']
}],
title: resource.metadata['subject']
}
Lti::ThinCommonCartridge.new parent
end
def create_zip_stream(files)
zip = Zip::OutputStream.write_buffer do |z|
files.each do |f|
z.put_next_entry f[:name]
z.write f[:data]
end
end
zip.rewind
zip
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems