Chronica

Instructions

Implementation Reference

• src/chronica/tools.py:419-438 (handler)

  The tool handler for "chronica_get_last_seen" which retrieves the last seen time for a given thread_type from the store.

  elif name == "chronica_get_last_seen":
      thread_type = arguments.get("thread_type")
      if not thread_type:
          return [types.TextContent(
              type="text",
              text=json.dumps({"error": "invalid_thread", "message": "thread_type is required"}, ensure_ascii=False)
          )]
      
      if thread_type not in ["normal", "project"]:
          return [types.TextContent(
              type="text",
              text=json.dumps({"error": "invalid_thread", "message": f"thread_type must be 'normal' or 'project', got: {thread_type}"}, ensure_ascii=False)
          )]
      
      last_seen_time = store.get_last_seen(thread_type)
      result = {"last_seen_time": last_seen_time} if last_seen_time else {"last_seen_time": None}
      return [types.TextContent(
          type="text",
          text=json.dumps(result, ensure_ascii=False)
      )]

• src/chronica/store.py:278-292 (helper)

  The helper method that executes the SQLite query to retrieve the last seen timestamp for a specific thread_type.

  def get_last_seen(self, thread_type: str) -> Optional[str]:
      """最後に見た時刻を取得"""
      conn = sqlite3.connect(str(self.db_path))
      cursor = conn.cursor()
      
      cursor.execute("""
          SELECT saved_time FROM entries
          WHERE thread_type = ?
          ORDER BY saved_time DESC
          LIMIT 1
      """, (thread_type,))
      
      row = cursor.fetchone()
      conn.close()
      return row[0] if row else None

• src/chronica/tools.py:150-163 (registration)

  Tool registration for "chronica_get_last_seen" in the tool list definition.

      name="chronica_get_last_seen",
      description="指定されたスレッドタイプで最後に見た時刻を取得します。",
      inputSchema={
          "type": "object",
          "properties": {
              "thread_type": {
                  "type": "string",
                  "enum": ["normal", "project"],
                  "description": "スレッドタイプ（必須）"
              }
          },
          "required": ["thread_type"]
      }
  ),