From cab6b2633ebb6be59dc47df951c78b1474f0aaae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E5=AF=BB=E6=AC=A2?= <lxh@cxh.cn>
Date: Sat, 9 Dec 2023 11:52:11 +0800
Subject: [PATCH] =?UTF-8?q?:art:=20=E4=BC=98=E5=8C=96=20AI=EF=BC=8C?=
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---
 handler/at_message.go | 54 ++++++++++++++++++++++++++++++++++++++++---
 service/message.go    |  1 +
 2 files changed, 52 insertions(+), 3 deletions(-)

diff --git a/handler/at_message.go b/handler/at_message.go
index 4a0d394..c28db25 100644
--- a/handler/at_message.go
+++ b/handler/at_message.go
@@ -3,15 +3,19 @@ package handler
 import (
 	"context"
 	"fmt"
+	"github.com/duke-git/lancet/v2/slice"
 	"github.com/sashabaranov/go-openai"
 	"go-wechat/client"
+	"go-wechat/common/current"
 	"go-wechat/config"
 	"go-wechat/entity"
 	"go-wechat/model"
+	"go-wechat/types"
 	"go-wechat/utils"
 	"log"
 	"regexp"
 	"strings"
+	"time"
 )
 
 // handleAtMessage
@@ -30,7 +34,7 @@ func handleAtMessage(m model.Message) {
 	}
 
 	// 预处理一下发送的消息，用正则去掉@机器人的内容
-	re := regexp.MustCompile(`@([^ ]+)`)
+	re := regexp.MustCompile(`@([^ | ]+)`)
 	matches := re.FindStringSubmatch(m.Content)
 	if len(matches) > 0 {
 		// 过滤掉第一个匹配到的
@@ -46,6 +50,38 @@ func handleAtMessage(m model.Message) {
 			Content: config.Conf.Ai.Personality,
 		})
 	}
+
+	// 查询发信人前面几条文字信息，组装进来
+	var oldMessages []entity.Message
+	client.MySQL.Model(&entity.Message{}).
+		Where("create_at >= DATE_SUB(NOW(),INTERVAL 30 MINUTE)").
+		Where("from_user = ? AND group_user = ? AND display_full_content LIKE ?", m.FromUser, m.GroupUser, "%在群聊中@了你").
+		Or("to_user = ? AND group_user = ?", m.FromUser, m.GroupUser).
+		Order("create_at desc").
+		Limit(4).Find(&oldMessages)
+	// 翻转数组
+	slice.Reverse(oldMessages)
+	// 循环填充消息
+	for _, message := range oldMessages {
+		// 剔除@机器人的内容
+		msgStr := message.Content
+		matches = re.FindStringSubmatch(msgStr)
+		if len(matches) > 0 {
+			// 过滤掉第一个匹配到的
+			msgStr = strings.Replace(msgStr, matches[0], "", 1)
+		}
+		// 填充消息
+		role := openai.ChatMessageRoleUser
+		if message.ToUser != current.GetRobotInfo().WxId {
+			// 如果收信人不是机器人，表示这条消息是 AI 发的
+			role = openai.ChatMessageRoleAssistant
+		}
+		messages = append(messages, openai.ChatCompletionMessage{
+			Role:    role,
+			Content: msgStr,
+		})
+	}
+
 	// 填充用户消息
 	messages = append(messages, openai.ChatCompletionMessage{
 		Role:    openai.ChatMessageRoleUser,
@@ -63,8 +99,8 @@ func handleAtMessage(m model.Message) {
 	if config.Conf.Ai.BaseUrl != "" {
 		conf.BaseURL = fmt.Sprintf("%s/v1", config.Conf.Ai.BaseUrl)
 	}
-	client := openai.NewClientWithConfig(conf)
-	resp, err := client.CreateChatCompletion(
+	ai := openai.NewClientWithConfig(conf)
+	resp, err := ai.CreateChatCompletion(
 		context.Background(),
 		openai.ChatCompletionRequest{
 			Model:    chatModel,
@@ -78,6 +114,18 @@ func handleAtMessage(m model.Message) {
 		return
 	}
 
+	// 保存一下AI 返回的消息，消息 Id 使用传入 Id 的负数
+	var replyMessage entity.Message
+	replyMessage.MsgId = -m.MsgId
+	replyMessage.CreateTime = int(time.Now().Local().Unix())
+	replyMessage.CreateAt = time.Now().Local()
+	replyMessage.Content = resp.Choices[0].Message.Content
+	replyMessage.FromUser = current.GetRobotInfo().WxId // 发信人是机器人
+	replyMessage.GroupUser = m.GroupUser                // 群成员
+	replyMessage.ToUser = m.FromUser                    // 收信人是发信人
+	replyMessage.Type = types.MsgTypeText
+	client.MySQL.Create(&replyMessage) // 保存入库
+
 	// 发送消息
 	utils.SendMessage(m.FromUser, m.GroupUser, "\n"+resp.Choices[0].Message.Content, 0)
 }
diff --git a/service/message.go b/service/message.go
index 245a2ec..f76a55d 100644
--- a/service/message.go
+++ b/service/message.go
@@ -18,6 +18,7 @@ func SaveMessage(msg entity.Message) {
 		return
 	}
 	if count > 0 {
+		//log.Printf("消息已存在，消息Id: %d", msg.MsgId)
 		return
 	}
 	err = client.MySQL.Create(&msg).Error