content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * 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.
   */
  package com.alibaba.langengine.sqlite.memory;
  
  import com.alibaba.langengine.core.messages.*;
  import com.alibaba.langengine.core.prompt.MessageInfoDO;
  import com.alibaba.langengine.core.memory.BaseChatMessageHistory;
  import com.alibaba.langengine.sqlite.memory.cache.SqliteCache;
  import lombok.Data;
  
  import java.util.List;
  import java.util.stream.Collectors;
  
  /**
   * sqlite消息历史记录
   *
   * @author xiaoxuan.lp
   */
  @Data
  public class ChatMessageSqliteHistory extends BaseChatMessageHistory {
  
      private SqliteCache sqliteCache;
  
      @Override
      public List<BaseMessage> getRawMessages(String sessionId) {
          if(sessionId == null) {
              sessionId = this.getSessionId();
          }
          List<MessageInfoDO> messageInfoDOs = sqliteCache.getMessageInfo(sessionId);
          return messageInfoDOs.stream().map(messageInfoDO -> {
              if(messageInfoDO.getRole().equals("Human")) {
                  HumanMessage humanMessage = new HumanMessage();
                  humanMessage.setContent(messageInfoDO.getContent());
                  return humanMessage;
              } else if(messageInfoDO.getRole().equals("AI")) {
                  AIMessage aiMessage = new AIMessage();
                  aiMessage.setContent(messageInfoDO.getContent());
                  return aiMessage;
              } else if(messageInfoDO.getRole().equals("System")) {
                  SystemMessage systemMessage = new SystemMessage();
                  systemMessage.setContent(messageInfoDO.getContent());
                  return systemMessage;
              } else if(messageInfoDO.getRole().equals("Tool")) {
                  ToolMessage toolMessage = new ToolMessage();
                  toolMessage.setContent(messageInfoDO.getContent());
                  return toolMessage;
              } else {
                  ChatMessage chatMessage = new ChatMessage();
                  chatMessage.setRole(messageInfoDO.getRole());
                  chatMessage.setContent(messageInfoDO.getContent());
              }
              return null;
          }).filter(e -> e != null).collect(Collectors.toList());
      }
  
      @Override
      public void addSystemMessage(String sessionId, String message) {
          if(sessionId == null) {
              sessionId = this.getSessionId();
          }
          sqliteCache.updateMessageInfo(sessionId, "System", message);
      }
  
      @Override
      public void addUserMessage(String sessionId, String message) {
          if(sessionId == null) {
              sessionId = this.getSessionId();
          }
          sqliteCache.updateMessageInfo(sessionId, "Human", message);
      }
  
      @Override
      public void addAIMessage(String sessionId, String message) {
          if(sessionId == null) {
              sessionId = this.getSessionId();
          }
          sqliteCache.updateMessageInfo(sessionId, "AI", message);
      }
  
      @Override
      public void addToolMessage(String sessionId, String message) {
          if(sessionId == null) {
              sessionId = this.getSessionId();
          }
          sqliteCache.updateMessageInfo(sessionId, "Tool", message);
      }
  
      @Override
      public void clear(String sessionId) {
          if(sessionId == null) {
              sessionId = this.getSessionId();
          }
          sqliteCache.remove(sessionId);
      }
  }
  