Rake tasks to dump ruby graphql for use with graphql code generators

graphql.rake

namespace :graphql do
  def write_update_file(filename, content)
    return puts("-- #{filename}") if File.exist?(filename) && File.read(filename) == content

    puts "Updating #{filename}"
    File.open(filename, 'w') { |file| file << content }
  end

  task dump_schema: :environment do
    system 'mkdir -p tmp/graphql'

    file_name = Rails.root.join('tmp/graphql/schema.gql')
    write_update_file(file_name, GraphQL::Schema::Printer.print_schema(YourSchema))
  end
end