text: # -*- coding: utf-8 -*-
  #
  # Copyright 2018-2021 - Swiss Data Science Center (SDSC)
  # A partnership between École Polytechnique Fédérale de Lausanne (EPFL) and
  # Eidgenössische Technische Hochschule Zürich (ETHZ).
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  """Command builder for repo."""
  
  from renku.core import errors
  from renku.core.management.command_builder.command import Command, CommandResult, check_finalized
  
  
  class Commit(Command):
      """Builder for commands that create a commit."""
  
      DEFAULT_ORDER = 4
  
      def __init__(
          self,
          builder: Command,
          message: str = None,
          commit_if_empty: bool = False,
          raise_if_empty: bool = False,
          commit_only: bool = None,
      ) -> None:
          """__init__ of Commit.
  
          :param message: The commit message. Autogenerated if left empty.
          :param commit_if_empty: Whether to commit if there are no modified files .
          :param raise_if_empty: Whether to raise an exception if there are no modified files.
          :param commit_only: Only commit the supplied paths.
          """
          self._builder = builder
          self._message = message
          self._commit_if_empty = commit_if_empty
          self._raise_if_empty = raise_if_empty
          self._commit_filter_paths = commit_only
  
      def _pre_hook(self, builder: Command, context: dict, *args, **kwargs) -> None:
          """Hook to create a commit transaction."""
          if "client_dispatcher" not in context:
              raise ValueError("Commit builder needs a IClientDispatcher to be set.")
          if "stack" not in context:
              raise ValueError("Commit builder needs a stack to be set.")
  
          from renku.core.management.git import prepare_commit
  
          self.diff_before = prepare_commit(
              context["client_dispatcher"].current_client, commit_only=self._commit_filter_paths
          )
  
      def _post_hook(self, builder: Command, context: dict, result: CommandResult, *args, **kwargs):
          """Hook that commits changes."""
          from renku.core.management.git import finalize_commit
  
          if result.error:
              # TODO: Cleanup repo
              return
  
          try:
              finalize_commit(
                  context["client_dispatcher"].current_client,
                  self.diff_before,
                  commit_only=self._commit_filter_paths,
                  commit_empty=self._commit_if_empty,
                  raise_if_empty=self._raise_if_empty,
                  commit_message=self._message,
              )
          except errors.RenkuException as e:
              result.error = e
  
      @check_finalized
      def build(self) -> Command:
          """Build the command."""
          self._builder.add_pre_hook(self.DEFAULT_ORDER, self._pre_hook)
          self._builder.add_post_hook(self.DEFAULT_ORDER, self._post_hook)
  
          return self._builder.build()
  
      @check_finalized
      def with_commit_message(self, message: str) -> Command:
          """Set a new commit message."""
          self._message = message
  
          return self
  
  
  class RequireClean(Command):
      """Builder to check if repo is clean."""
  
      DEFAULT_ORDER = 4
  
      def __init__(self, builder: Command) -> None:
          """__init__ of RequireClean."""
          self._builder = builder
  
      def _pre_hook(self, builder: Command, context: dict, *args, **kwargs) -> None:
          """Check if repo is clean."""
          if "client_dispatcher" not in context:
              raise ValueError("Commit builder needs a IClientDispatcher to be set.")
          context["client_dispatcher"].current_client.ensure_clean(ignore_std_streams=not builder._track_std_streams)
  
      @check_finalized
      def build(self) -> Command:
          """Build the command."""
          self._builder.add_pre_hook(self.DEFAULT_ORDER, self._pre_hook)
  
          return self._builder.build()
  
  
  class Isolation(Command):
      """Builder to run a command in git isolation."""
  
      DEFAULT_ORDER = 3
  
      def __init__(
          self,
          builder: Command,
      ) -> None:
          """__init__ of Commit."""
          self._builder = builder
  
      def _injection_pre_hook(self, builder: Command, context: dict, *args, **kwargs) -> None:
          """Hook to setup dependency injection for commit transaction."""
          if "client_dispatcher" not in context:
              raise ValueError("Commit builder needs a IClientDispatcher to be set.")
          from renku.core.management.git import prepare_worktree
  
          self.original_client = context["client_dispatcher"].current_client
  
          self.new_client, self.isolation, self.path, self.branch_name = prepare_worktree(
              context["client_dispatcher"].current_client, path=None, branch_name=None, commit=None
          )
  
          context["client_dispatcher"].push_created_client_to_stack(self.new_client)
  
      def _post_hook(self, builder: Command, context: dict, result: CommandResult, *args, **kwargs):
          """Hook that commits changes."""
          from renku.core.management.git import finalize_worktree
  
          context["client_dispatcher"].pop_client()
  
          try:
              finalize_worktree(
                  self.original_client,
                  self.isolation,
                  self.path,
                  self.branch_name,
                  delete=True,
                  new_branch=True,
                  exception=result.error,
              )
          except errors.RenkuException as e:
              if not result.error:
                  result.error = e
  
      @check_finalized
      def build(self) -> Command:
          """Build the command."""
          self._builder.add_injection_pre_hook(self.DEFAULT_ORDER, self._injection_pre_hook)
          self._builder.add_post_hook(self.DEFAULT_ORDER, self._post_hook)
  
          return self._builder.build()
  