refactor(service): 重构服务代码结构并更新配置

service/prompt/prompt_session_redis_service.go

@@ -0,0 +1,114 @@
+package prompt
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/gogf/gf/v2/frame/g"
+)
+
+// ==================== Redis 操作 ====================
+
+// saveToRedis 保存会话数据到Redis
+func saveToRedis(ctx context.Context, sessionId string, requestMessages []map[string]any, responseMessages []map[string]any) error {
+	key := fmt.Sprintf("chat:session:%s", sessionId)
+
+	maxRounds := g.Cfg().MustGet(ctx, "session.maxRounds", 10).Int()
+	expireSeconds := g.Cfg().MustGet(ctx, "session.expireTime", 1800).Int64()
+	expireTime := time.Duration(expireSeconds) * time.Second
+
+	data := map[string]any{
+		"sessionId":       sessionId,
+		"requestContent":  requestMessages,
+		"responseContent": responseMessages,
+		"timestamp":       time.Now().Unix(),
+	}
+
+	b, err := json.Marshal(data)
+	if err != nil {
+		return fmt.Errorf("序列化会话数据失败: %w", err)
+	}
+
+	_, err = g.Redis().Do(ctx, "LPUSH", key, string(b))
+	if err != nil {
+		return fmt.Errorf("写入Redis失败: %w", err)
+	}
+
+	_, err = g.Redis().Do(ctx, "LTRIM", key, 0, maxRounds-1)
+	if err != nil {
+		return fmt.Errorf("裁剪Redis列表失败: %w", err)
+	}
+
+	_, err = g.Redis().Do(ctx, "EXPIRE", key, int64(expireTime.Seconds()))
+	if err != nil {
+		return fmt.Errorf("设置过期时间失败: %w", err)
+	}
+
+	return nil
+}
+
+// getFromRedis 从Redis获取会话历史
+func getFromRedis(ctx context.Context, sessionId string) ([]map[string]any, error) {
+	key := fmt.Sprintf("chat:session:%s", sessionId)
+
+	result, err := g.Redis().Do(ctx, "LRANGE", key, 0, -1)
+	if err != nil {
+		return nil, fmt.Errorf("从Redis获取数据失败: %w", err)
+	}
+
+	if result == nil || result.IsNil() {
+		return []map[string]any{}, nil
+	}
+
+	var sessions []map[string]any
+	values := result.Strings()
+	for _, str := range values {
+		var data map[string]any
+		if err := json.Unmarshal([]byte(str), &data); err != nil {
+			g.Log().Warningf(ctx, "[会话] 解析Redis数据失败 err=%v", err)
+			continue
+		}
+		sessions = append(sessions, data)
+	}
+
+	// 反转（Redis 最新在前 → 时间正序）
+	for i, j := 0, len(sessions)-1; i < j; i, j = i+1, j-1 {
+		sessions[i], sessions[j] = sessions[j], sessions[i]
+	}
+
+	return sessions, nil
+}
+
+// GetSessionHistoryForInference 获取历史会话，返回扁平消息数组（给推理用）
+func GetSessionHistoryForInference(ctx context.Context, sessionId string) ([]map[string]any, error) {
+	historyData, err := getFromRedis(ctx, sessionId)
+	if err != nil {
+		return nil, fmt.Errorf("获取历史会话失败: %w", err)
+	}
+
+	if len(historyData) == 0 {
+		return []map[string]any{}, nil
+	}
+
+	var messages []map[string]any
+	for _, round := range historyData {
+		if reqMsgs, ok := round["requestContent"].([]interface{}); ok {
+			for _, m := range reqMsgs {
+				if msg, ok := m.(map[string]interface{}); ok {
+					messages = append(messages, msg)
+				}
+			}
+		}
+		if respMsgs, ok := round["responseContent"].([]interface{}); ok {
+			for _, m := range respMsgs {
+				if msg, ok := m.(map[string]interface{}); ok {
+					messages = append(messages, msg)
+				}
+			}
+		}
+	}
+
+	return messages, nil
+}