# frozen_string_literal: true

require 'avm/data/instance/unit'
require 'eac_ruby_utils/core_ext'
require 'curb'
require 'open-uri'

module Avm
  module EacRedmineBase0
    module Instances
      class DataUnit < ::Avm::Data::Instance::Unit
        common_constructor :instance

        EXPORT_PATH = '/backup/export'
        EXTENSION = '.tar'
        IMPORT_PATH = '/backup/import.json'

        def do_dump(data_path)
          ::File.open(data_path, 'wb') do |file|
            file << export_request.response.body_data_or_raise
          end
        end

        def do_load(data_path)
          do_load_by_web(data_path) || do_load_by_rake(data_path) || raise('Failed to load')
        end

        def do_load_by_web(data_path)
          c = Curl::Easy.new(import_url)
          c.multipart_form_post = true
          c.http_post(Curl::PostField.file('redmine_with_git_tableless_load[path]', data_path))
          c.perform
          true
        rescue Curl::Err::ConnectionFailedError
          false
        end

        def do_load_by_rake(data_path)
          instance.bundle('exec', 'rake', "redmine_with_git:load:all[#{data_path}]").system
          true
        end

        def export_request
          instance.rest_api.request(EXPORT_PATH)
        end

        def import_url
          instance.rest_api.build_service_url(IMPORT_PATH).to_s
        end
      end
    end
  end
end