saw-go/service/generalModel/openai.go

package generalModel

import (
	"StuAcaWorksAI/dao"
	"StuAcaWorksAI/proto"
	"StuAcaWorksAI/worker"
	"context"
	"encoding/json"
	"github.com/ollama/ollama/api"
	"github.com/openai/openai-go"
	"github.com/openai/openai-go/option"
	"log"
	"time"
)

// 通义模型
func OpenAI(modelParam proto.ModelParam, imCtx *proto.IMParamContext, platform string) {
	apiKey := modelParam.APIKey
	if apiKey == "" {
		log.Printf("openai_%s apiKey is empty\n", platform)
		return
	}
	openaiClient := openai.NewClient(
		option.WithAPIKey(apiKey),
		option.WithBaseURL(modelParam.Url),
	)
	var messages []openai.ChatCompletionMessageParamUnion
	err := GetOpenAIHistoryMessages(imCtx.SessionID, modelParam.System, &messages, imCtx.UserID)
	if err != nil {
		log.Println("GetOpenAIHistoryMessages error:", err)
		return
	}
	if proto.Config.LOG_OUTPUT {
		messagesBytes, _ := json.Marshal(messages)
		log.Println("openai messages:", string(messagesBytes))
	}

	stream := openaiClient.Chat.Completions.NewStreaming(context.TODO(), openai.ChatCompletionNewParams{
		Messages: messages,
		Model:    modelParam.Model,
	})
	acc := openai.ChatCompletionAccumulator{}
	answer := ""
	var tokens int64
	var PromptTokens int64 //用户问题token

	for stream.Next() {
		chunk := stream.Current()
		msgStr, err3 := json.Marshal(chunk)
		if err3 != nil {
			log.Println("openai stream msg Error parsing JSON:", err)
		}
		//go service.CreateAIStreamMsg(imCtx.UserID, imCtx.ModelID, imCtx.SessionID, chunk, modelParam.Model)
		go dao.InsertAIStreamMsgToDB(imCtx.UserID, imCtx.SessionID, uint(imCtx.ModelID), string(msgStr), modelParam.Model) //存入数据库
		acc.AddChunk(chunk)
		if _, ok := acc.JustFinishedToolCall(); ok {
			chunk.Created = -1 // 这里由于没有返回结束标志，所以用该字段来判断
		}
		if len(chunk.Choices) > 0 {
			if proto.Config.LOG_OUTPUT {
				log.Printf("openai_%s stream msg:%s\n", platform, chunk.Choices[0].Delta.Content)
			}
			answer += chunk.Choices[0].Delta.Content
			tokens = chunk.Usage.TotalTokens
			PromptTokens = chunk.Usage.PromptTokens
		}
		OpenAIToGeneralMassageAndSendMsgQueue(&chunk, imCtx.Channel, imCtx.SessionID, imCtx.UserID)
	}
	if stream.Err() != nil {
		log.Printf("openai_%s stream err:%v\n", platform, stream.Err())
	}
	//将消息存入数据库
	DOSaveMessageAndToken(imCtx, answer, "openai_"+platform, tokens, PromptTokens)
}

func DOSaveMessageAndToken(imCtx *proto.IMParamContext, answer, platform string, tokens, PromptTokens int64) {
	msg := dao.Message{SessionID: imCtx.SessionID, FromID: imCtx.UserID, ToID: imCtx.ModelID, Msg: answer, Type: proto.ModelToUserMsgType, FunctionID: imCtx.FunctionID, Token: int(tokens), Status: proto.UserToModelMsgType}
	err2, msgID := dao.CreateMessageV2(msg)
	if err2 != nil {
		log.Printf("%s create message error:%v\n", platform, err2)
	} else {
		log.Printf("%s create message success,message id:%d\n", platform, msgID)
	}
	//保存用户问题消耗token
	err, messageTokenID := dao.CreateMessageToken(imCtx.SessionID, imCtx.UserID, int(msgID), int(PromptTokens))
	if err != nil {
		log.Printf("%s user prompt create message token error:%v\n", platform, err)
	} else {
		log.Printf("%s user prompt create message token id:%d\n", platform, messageTokenID)
	}

	//保存返回的消息token消耗
	err, messageTokenID = dao.CreateMessageToken(imCtx.SessionID, imCtx.UserID, int(msgID), int(tokens))
	if err != nil {
		log.Printf("%s create message token error:%v\n", platform, err)
	} else {
		log.Printf("%s create message token id:%d\n", platform, messageTokenID)
	}
	//存入tokens消耗信息
	err3, modelTokenID := dao.CreateModelToken(uint(imCtx.UserID), uint(imCtx.ModelID), uint(imCtx.SessionID), uint(tokens))
	if err3 != nil {
		log.Printf("%s create model tokens error:%v\n", platform, err3)
	} else {
		log.Printf("%s create model tokens success,message id:%d\n", platform, modelTokenID)
	}
}

func GetOpenAIHistoryMessages(sessionID int, systemPrompt string, messages *[]openai.ChatCompletionMessageParamUnion, userID int) error {
	//获取会话的历史消息
	msgs := dao.FindMessageBySessionIDV2(sessionID)
	if len(msgs) > proto.SparkContextLength {
		//只取最后的 SparkContextLength 条消息
		msgs = msgs[len(msgs)-proto.SparkContextLength-1:]
	}
	//添加系统消息
	if systemPrompt != "" {
		*messages = append(*messages, openai.SystemMessage(systemPrompt))
	}
	for _, msg := range msgs {
		if msg.Type == proto.UserToModelMsgType {
			if msg.Status == proto.UserToModelFileMsgType {
				//err2 := decodeFileMessageToSparkMessage(msg.Msg, userID, messages)
				//if err2 != nil {
				//	log.Println("spark decode file message error:", err2)
				//}
			} else {
				*messages = append(*messages, openai.UserMessage(msg.Msg))
			}
		} else if msg.Type == proto.ModelToUserMsgType {
			*messages = append(*messages, openai.AssistantMessage(msg.Msg))
		} else {
			continue
		}
	}
	return nil
}

func OpenAIToGeneralMassageAndSendMsgQueue(data *openai.ChatCompletionChunk, channel string, SessionID int, UserID int) {
	var aiMsg proto.AIQueueMessage
	var wsMsg proto.WSMessage
	var apiMsg api.GenerateResponse
	apiMsg.Model = proto.ModelTypeSpark
	apiMsg.Response = data.Choices[0].Delta.Content
	if data.Created < 0 { //这里由于没有返回结束标志，所以用该字段来判断
		apiMsg.Done = true
	} else {
		apiMsg.Done = false
	}
	//消息队列部分
	aiMsg.Type = proto.ModelTypeSpark
	aiMsg.Msg = apiMsg
	//ws发送消息部分
	wsMsg.Msg = aiMsg
	wsMsg.SessionID = SessionID
	wsMsg.ToID = UserID
	wsMsg.Type = proto.ModelTypeSpark

	//发送消息
	wsMsgStr, _ := json.Marshal(wsMsg)
	worker.Publish(channel, string(wsMsgStr), time.Second*60)
}

// openai 单轮对话,文本
func SingleTurnConversationText(prompt string, param proto.ModelParam) (string, error) {
	var answer string
	var err error
	apiKey := param.APIKey
	if apiKey == "" || param.Url == "" {
		log.Printf("openai apiKey or url is empty\n")
		return "", nil
	}
	openaiClient := openai.NewClient(
		option.WithAPIKey(apiKey),
		option.WithBaseURL(param.Url),
	)
	chatCompletion, err := openaiClient.Chat.Completions.New(context.TODO(), openai.ChatCompletionNewParams{
		Messages: []openai.ChatCompletionMessageParamUnion{
			openai.UserMessage(prompt),
		},
		Model: param.Model,
	})
	if err != nil {
		log.Printf("openai single turn conversation error:%v\n", err)
		return "", err
	}
	answer = chatCompletion.Choices[0].Message.Content
	return answer, nil
}