# frozen_string_literal: true

require 'eac_ruby_utils/core_ext'

module Avm
  module EacRailsBase1
    module Instances
      class SystemdUnit
        module Service
          def service_content
            template.child('tasks_scheduler.service').apply(variables_source)
          end

          def service_exec_lines
            service_exec_operations
              .map { |k, v| "#{k}=#{tasks_scheduler_command_path} #{v}" }
              .join("\n")
          end

          def service_path
            ::Pathname.new('/etc/systemd/system').join(unit_name)
          end

          def service_link_path
            ::Pathname.new('/etc/systemd/system/multi-user.target.wants').join(unit_name)
          end

          def verify_service
            sudo_system!('systemd-analyze', 'verify', service_path)
          end

          private

          def enable_service
            systemctl('enable', unit_name)
          end

          def link_service
            sudo_execute!('rm', '-f', service_link_path)
            sudo_execute!('ln', '-s', service_path, service_link_path)
          end

          def reload_systemd
            systemctl('daemon-reload')
          end

          # @return [Hash<String, String>]
          def service_exec_operations
            if exec_run?
              { 'ExecStart' => 'run' }
            else
              { 'ExecStart' => 'start', 'ExecStop' => 'stop' }
            end
          end

          def start_service
            systemctl('start', unit_name)
          end

          def systemctl(*args)
            sudo_system!('systemctl', *args)
          end

          def write_service
            infom 'Writing service\'s unit file...'
            platform_instance.file_sudo_write(service_path, service_content)
          end
        end
      end
    end
  end
end