text: import logging
  import os
  from typing import Optional
  
  from bauh.api.abstract.model import PackageStatus
  from bauh.api.http import HttpClient
  from bauh.gems.arch.model import ArchPackage
  from bauh.gems.arch.version import normalize_version
  from bauh.view.util.translation import I18n
  
  URL_PKG_DOWNLOAD = 'https://aur.archlinux.org/{}'
  
  
  class AURDataMapper:
  
      def __init__(self, http_client: HttpClient, i18n: I18n, logger: logging.Logger):
          self.http_client = http_client
          self.i18n = i18n
          self.logger = logger
  
      def fill_last_modified(self, pkg: ArchPackage, api_data: dict):
          last_modified = api_data.get('LastModified')
          if last_modified is not None and isinstance(last_modified, int):
              pkg.last_modified = last_modified
              self.logger.info("'last_modified' field ({}) set to package '{}'".format(last_modified, pkg.name))
          else:
              self.logger.warning("Could not set the 'last_modified' field ({}) to package '{}'".format(last_modified, pkg.name))
  
      def fill_api_data(self, pkg: ArchPackage, api_data: dict, fill_version: bool = True):
          pkg.id = api_data.get('ID')
  
          if not pkg.name:
              pkg.name = api_data.get('Name')
  
          if not pkg.description:
              pkg.description = api_data.get('Description')
  
          pkg.package_base = api_data.get('PackageBase')
          pkg.popularity = api_data.get('Popularity')
          pkg.votes = api_data.get('NumVotes')
          pkg.maintainer = api_data.get('Maintainer')
          pkg.url_download = URL_PKG_DOWNLOAD.format(api_data['URLPath']) if api_data.get('URLPath') else None
  
          if api_data['FirstSubmitted'] and isinstance(api_data['FirstSubmitted'], int):
              pkg.first_submitted = api_data['FirstSubmitted']
  
          if not pkg.installed:
              self.fill_last_modified(pkg=pkg, api_data=api_data)
  
          version = api_data.get('Version')
  
          if version:
              version = version.split(':')
              version = version[0] if len(version) == 1 else version[1]
  
          if fill_version:
              pkg.version = version
  
          pkg.latest_version = version
  
      @staticmethod
      def check_version_update(version: str, latest_version: str) -> bool:
          if version and latest_version and version != latest_version:
              return normalize_version(latest_version) > normalize_version(version)
  
          return False
  
      def fill_package_build(self, pkg: ArchPackage):
          cached_pkgbuild = pkg.get_cached_pkgbuild_path()
          if pkg.installed and os.path.exists(cached_pkgbuild):
              with open(cached_pkgbuild) as f:
                  pkg.pkgbuild = f.read()
          else:
              res = self.http_client.get(pkg.get_pkg_build_url())
  
              if res and res.status_code == 200 and res.text:
                  pkg.pkgbuild = res.text
  
      def map_api_data(self, apidata: dict, pkgs_installed: Optional[dict], categories: dict) -> ArchPackage:
          data = pkgs_installed.get(apidata.get('Name')) if pkgs_installed else None
          app = ArchPackage(name=apidata.get('Name'), installed=bool(data), repository='aur', i18n=self.i18n)
          app.status = PackageStatus.LOADING_DATA
  
          if categories:
              app.categories = categories.get(app.name)
  
          if data:
              app.version = data.get('version')
              app.description = data.get('description')
  
          self.fill_api_data(app, apidata, fill_version=not data)
          return app
  
      def check_update(self, pkg: ArchPackage, last_modified: Optional[int]) -> bool:
          valid_last_modified = last_modified is not None and isinstance(last_modified, int)
  
          if not valid_last_modified:
              self.logger.warning("'last_modified' timestamp informed for package '{}' is invalid: {}".format(pkg.name, valid_last_modified))
  
          pkg_last_modified_ts = pkg.last_modified if pkg.last_modified is not None else pkg.install_date
  
          if pkg.last_modified is None:
              self.logger.warning("AUR package '{}' has no 'last_modified' field set.".format(pkg.name))
  
              if pkg.install_date is None:
                  self.logger.warning("AUR package '{}' has no 'install_date' field set".format(pkg.name))
                  self.logger.warning("Update checking for AUR package '{}' will only consider version strings".format(pkg.name))
              else:
                  self.logger.warning("AUR package {} 'install_date' field will be used for update checking".format(pkg.name))
  
          if pkg_last_modified_ts is not None and valid_last_modified and pkg_last_modified_ts < last_modified:
              return True
          else:
              return self.check_version_update(pkg.version, pkg.latest_version)
  