# noinspection RubyResolve
require 'fileutils'

require 'libis/tools/extend/string'
require 'libis/tools/logger'
require 'libis/tools/command'

require 'libis/format/config'

module Libis
  module Format
    module Tool

      class SpreadsheetToOds
        include ::Libis::Tools::Logger

        def self.run(source, target, options = {})
          self.new.run source, target, options
        end

        def run(source, target, options = {})
          workdir = '/...'
          workdir = Dir.tmpdir unless Dir.exist? workdir

          workdir = File.join(workdir, rand(1000000).to_s)
          FileUtils.mkpath(workdir)

          src_file = File.join(workdir, File.basename(source))
          FileUtils.symlink source, src_file

          tgt_file = File.join(workdir, File.basename(source, '.*') + '.ods')

          export_filter = options[:export_filter] || 'ods'

          timeout = Libis::Format::Config[:timeouts][:spreadsheet_to_ods] ||
              Libis::Format::Config[:timeouts][:office_to_pdf]
          result = Libis::Tools::Command.run(
              Libis::Format::Config[:soffice_cmd], '--headless',
              "-env:UserInstallation=file://#{workdir}",
              '--convert-to', export_filter,
              '--outdir', workdir, src_file,
              timeout: timeout,
              kill_after: timeout * 2
          )

          raise RuntimeError, "#{self.class} took too long (> #{timeout} seconds) to complete" if result[:timeout]
          warn "OfficeToPdf conversion messages: \n\t#{result[:err].join("\n\t")}" unless result[:err].empty?
          raise RuntimeError, "#{self.class} failed to generate target file #{tgt_file}" unless File.exist?(tgt_file)

          FileUtils.copy tgt_file, target, preserve: true

        ensure
          FileUtils.rmtree workdir rescue nil

          result[:out]
        end
      end

    end
  end
end