昨天我們知道會 call PRReviewer，PRReviewer 裡面會拿到我們主要的 git_provider, PR URL，程式所用的 language。裡面有一個 run 的 func，很重要地執行整個 review 的 flow，裡面包含了

1. incremental review

   1. 只針對從上次 review 以來的新變更，而不是每次都重新 review 整個PR。以此來加快效率，並專注新變更

   2. 如果要求要 incremental review，但是從 git provider 沒有拿到變更，下面會將它排除掉

      if self.incremental.is_incremental and hasattr(self.git_provider, "unreviewed_files_set") and not self.git_provider.unreviewed_files_set:
          get_logger().info(f"Incremental review is enabled for {self.pr_url} but there are no new files")
          previous_review_url = ""
          if hasattr(self.git_provider, "previous_review"):
              previous_review_url = self.git_provider.previous_review.html_url
          if get_settings().config.publish_output:
              self.git_provider.publish_comment(f"Incremental Review Skipped\n"
                              f"No files were changed since the [previous PR Review]({previous_review_url})")
          return None
      

2. auto_approve

   1. 查看

      if isinstance(self.args, list) and self.args and self.args[0] == 'auto_approve':
          get_logger().info(f'Auto approve flow PR: {self.pr_url} ...')
          self.auto_approve_logic()
          return None
      

   2. 從 auto_approve_logic 開始追，他先查看設定是否啟用 auto_approve

      if get_settings().pr_reviewer.enable_auto_approval:
      

   3. 如果啟用，則獲取 auto_approve 的標準值

      maximal_review_effort = get_settings().pr_reviewer.maximal_review_effort
      

   4. 從 label review effort [1-5]: 中找到 effort，如果 maximal_review_effort < 5 則 error 並 comment 不 approve

   5. 如果通過，則紀錄並發布 comment

      
      is_auto_approved = self.git_provider.auto_approve()
      
      
      if is_auto_approved:
          get_logger().info("Auto-approved PR")
          self.git_provider.publish_comment("Auto-approved PR")
      

   來稍微追一下這是怎麼設定來的

   1. default false

      def auto_approve(self) -> bool:
          return False
      

   2. 從剛剛 PRreviewer 追

      if isinstance(self.args, list) and self.args and self.args[0] == 'auto_approve':
      
      
      追到上一步
      await command2class[action](pr_url, ai_handler=self.ai_handler, args=args).run()