feat(api): 新增 RAG 聊天模式和优化 ES 查询功能

- 新增 RAG 聊天模式常量和前端字段设定
- 修改 Encounters Create 方法中的 ES 同步逻辑
- 更新 Rag ChatSSE 和 ChatWebSocket 方法，支持新的聊天模式
- 重构 NlpWebSocketResult 创建函数，使用新增的常量
- 新增 Encounter 的 TopK 方法，用于 ES 向量搜索
- 更新 DocResult 结构，实现 DocInterface 接口
- 修改 prompts.yml，增加 Diary 模式的提示模板

app/global/consts/api_mode.go

@@ -9,3 +9,10 @@ const (
 	RagChatModeDiary     string = "Diary"  // 查询路遇资料等
 	RagChatModeDetect    string = "Detect" // 辅助 catface 的辨认功能；
 )
+
+// 前端的字段设定
+const (
+	AiMessageTypeText  string = "text"
+	AiMessageTypeDoc   string = "doc"
+	AiMessageTypeToken string = "token"
+)

app/http/controller/web/encounter_controller.go

@@ -74,7 +74,7 @@ func (e *Encounters) Create(context *gin.Context) {
 		go model.CreateEncounterAnimalLinkFactory("").Insert(encounter.Id, animals_id)
 
 		// 3. ES speed // TODO 这里如何实现 不同 DB 之间的 “事务” 概念。
-		if level := int(context.GetFloat64(consts.ValidatorPrefix + "level")); level > 1 {
+		if level := int(context.GetFloat64(consts.ValidatorPrefix + "level")); level > 0 { // TEST 暂时全部数据都同步到 ES，不做 level 过滤。
 			go model_es.CreateEncounterESFactory(&encounter).InsertDocument()
 		}
 

app/http/controller/web/rag_controller.go

@@ -71,6 +71,11 @@ func (r *Rag) ChatSSE(context *gin.Context) {
 	query := context.Query("query")
 	token := context.Query("token")
 
+	mode := context.Query("mode")
+	if mode == "" {
+		mode = consts.RagChatModeKnowledge
+	}
+
 	// 0-1. 测试 python
 	if !micro_service.TestLinkPythonService() {
 		code := errcode.ErrPythonService
@@ -98,7 +103,7 @@ func (r *Rag) ChatSSE(context *gin.Context) {
 	}
 
 	// 2. ES TopK
-	docs, err := model_es.CreateDocESFactory().TopK(embedding, 1)
+	docs, err := model_es.CreateDocESFactory().TopK(embedding, 2)
 	if err != nil || len(docs) == 0 {
 		variable.ZapLog.Error("ES TopK error", zap.Error(err))
 
@@ -112,7 +117,7 @@ func (r *Rag) ChatSSE(context *gin.Context) {
 
 	// 3. LLM answer
 	go func() {
-		err := nlp.ChatRAG(docs[0].Content, query, ch, client)
+		err := nlp.ChatRAG(docs[0].Content, query, mode, ch, client)
 		if err != nil {
 			variable.ZapLog.Error("ChatKnoledgeRAG error", zap.Error(err))
 		}
@@ -199,7 +204,7 @@ func (r *Rag) ChatWebSocket(context *gin.Context) {
 	}
 
 	// 2. ES TopK // INFO 这里需要特化选取不同知识库的文档；目前是依靠显式的路由。
-	docs, err := curd.CreateDocCurdFactory().TopK(embedding, 1)
+	docs, err := curd.TopK(mode, embedding, 1)
 	if err != nil || len(docs) == 0 {
 		variable.ZapLog.Error("ES TopK error", zap.Error(err))
 
@@ -214,14 +219,14 @@ func (r *Rag) ChatWebSocket(context *gin.Context) {
 	// STAGE websocket 的 defer 关闭函数，但是需要 ES 拿到的 doc—id
 	defer func() { // UPDATE 临时"持久化"方案，之后考虑结合 jwt 维护的 token 处理。
 		// 0. 传递参考资料的信息
-		docMsg := model.CreateNlpWebSocketResult(docs[0].Type, docs)
+		docMsg := model.CreateNlpWebSocketResult(consts.AiMessageTypeDoc, docs) // TIP 断言
 		err := ws.WriteMessage(websocket.TextMessage, docMsg.JsonMarshal())
 		if err != nil {
 			variable.ZapLog.Error("Failed to send doc message via WebSocket", zap.Error(err))
 		}
 
 		// 1. 传递 token 信息； // UPDATE 临时方案
-		tokenMsg := model.CreateNlpWebSocketResult("token", token)
+		tokenMsg := model.CreateNlpWebSocketResult(consts.AiMessageTypeToken, token)
 		err = ws.WriteMessage(websocket.TextMessage, tokenMsg.JsonMarshal())
 		if err != nil {
 			variable.ZapLog.Error("Failed to send token message via WebSocket", zap.Error(err))
@@ -234,7 +239,7 @@ func (r *Rag) ChatWebSocket(context *gin.Context) {
 	ch := make(chan string)                               // TIP 建立通道。
 
 	go func() {
-		err := nlp.ChatRAG(docs[0].Content, query, mode, ch, clientInfo.Client)
+		err := nlp.ChatRAG(docs[0].ToString(), query, mode, ch, clientInfo.Client) // TIP 接口
 		if err != nil {
 			variable.ZapLog.Error("ChatKnoledgeRAG error", zap.Error(err))
 		}

app/model/rag_websocket_result.go

@@ -1,10 +1,13 @@
 package model
 
-import "encoding/json"
+import (
+	"catface/app/global/consts"
+	"encoding/json"
+)
 
 func CreateNlpWebSocketResult(t string, data any) *NlpWebSocketResult {
 	if t == "" {
-		t = "chat"
+		t = consts.AiMessageTypeText
 	}
 
 	return &NlpWebSocketResult{

app/model_es/encounter.go

@@ -142,32 +142,32 @@ func (e *Encounter) UpdateDocument(client *elasticsearch.Client, encounter *Enco
  */
 func (e *Encounter) QueryDocumentsMatchAll(query string, num int) ([]Encounter, error) {
 	body := fmt.Sprintf(`{
-  "size": %d, 
-  "query": {
-    "bool": {
-      "should": [
-        {"match": {"tags": "%s"}},
-        {"match": {"content": "%s"}},
-        {"match": {"title": "%s"}}
-      ]
-    }
-  },
-  "highlight": {
-    "pre_tags": ["%v"],
-    "post_tags": ["%v"],
-    "fields": {
-      "title": {},
-      "content": {
-        "fragment_size" : 15
-      },
-      "tags": {
-        "pre_tags": [""],
-        "post_tags": [""]
-      }
-    }
-  },
-  "_source": ["id", "title", "content", "tags"]
-}`, num, query, query, query, consts.PreTags, consts.PostTags)
+		"size": %d, 
+		"query": {
+			"bool": {
+			"should": [
+				{"match": {"tags": "%s"}},
+				{"match": {"content": "%s"}},
+				{"match": {"title": "%s"}}
+			]
+			}
+		},
+		"highlight": {
+			"pre_tags": ["%v"],
+			"post_tags": ["%v"],
+			"fields": {
+			"title": {},
+			"content": {
+				"fragment_size" : 15
+			},
+			"tags": {
+				"pre_tags": [""],
+				"post_tags": [""]
+			}
+			}
+		},
+		"_source": ["id", "title", "content", "tags"]
+	}`, num, query, query, query, consts.PreTags, consts.PostTags)
 
 	hits, err := model_handler.SearchRequest(body, e.IndexName())
 	if err != nil {
@@ -188,3 +188,46 @@ func (e *Encounter) QueryDocumentsMatchAll(query string, num int) ([]Encounter,
 
 	return encounters, nil
 }
+
+func (e *Encounter) TopK(embedding []float64, k int) ([]Encounter, error) {
+	// 同理 Doc
+	params := map[string]interface{}{
+		"query_vector": embedding,
+	}
+	paramsJSON, err := json.Marshal(params)
+	if err != nil {
+		return nil, err
+	}
+
+	body := fmt.Sprintf(`{
+		"size": %d,
+		"query": {
+			"script_score": {
+				"query": {"match_all": {}},
+				"script": {
+					"source": "cosineSimilarity(params.query_vector, 'embedding') + 1.0",
+					"params": %s
+				}
+			}
+		},
+		"_source":["id"]
+	}`, k, string(paramsJSON))
+
+	hits, err := model_handler.SearchRequest(body, e.IndexName())
+	if err != nil {
+		return nil, err
+	}
+
+	var encounters []Encounter
+	for _, hit := range hits {
+		hitMap := hit.(map[string]interface{})
+		source := hitMap["_source"].(map[string]interface{})
+		var encounter Encounter
+		if err := data_bind.ShouldBindFormMapToModel(source, &encounter); err != nil {
+			continue
+		}
+
+		encounters = append(encounters, encounter)
+	}
+	return encounters, nil
+}

app/model_res/base_model.go

@@ -0,0 +1,13 @@
+package model_res
+
+type DocInterface interface {
+	ToString() string
+}
+
+type DocBase struct {
+	Type string `json:"type"`
+}
+
+func (d DocBase) ToString() string {
+	return ""
+}

app/model_res/doc.go

@@ -6,10 +6,10 @@ import (
 	"time"
 )
 
-// BUG 存在 依賴循環
+// INFO 由于直接放到 model 中会导致循环引用，所以放到 model_res 中
 func NewDocResult(doc *model.Doc, doc_es *model_es.Doc) *DocResult {
 	return &DocResult{
-		Type:      "doc",
+		DocBase:   DocBase{Type: "doc"},
 		Id:        doc.Id,
 		Name:      doc.Name,
 		Content:   doc_es.Content,
@@ -18,9 +18,22 @@ func NewDocResult(doc *model.Doc, doc_es *model_es.Doc) *DocResult {
 }
 
 type DocResult struct {
-	Type      string     `json:"type"`
+	DocBase
 	Id        int64      `json:"id"`
 	Name      string     `json:"name"`
 	Content   string     `json:"content"`
 	UpdatedAt *time.Time `json:"updated_at"`
 }
+
+// GetType implements DocInterface.
+func (d DocResult) GetType() string {
+	panic("unimplemented")
+}
+
+/**
+ * @description: 实现 DocInterface 接口，输出作为 LLM 的参考内容。
+ * @return {*}
+ */
+func (d DocResult) ToString() string {
+	return d.Content
+}

app/model_res/encounter.go

@@ -0,0 +1,29 @@
+package model_res
+
+import (
+	"catface/app/model"
+	"catface/app/model_es"
+	"fmt"
+	"time"
+)
+
+func NewEncounterResult(encounter *model.Encounter, encounter_es *model_es.Encounter) *EncounterResult {
+	return &EncounterResult{
+		DocBase:   DocBase{Type: "encounter"},
+		Id:        encounter.Id,
+		Title:     encounter.Title,
+		Content:   encounter.Content,
+		UpdatedAt: encounter.UpdatedAt}
+}
+
+type EncounterResult struct {
+	DocBase
+	Id        int64      `json:"id"`
+	Title     string     `json:"title"`
+	Content   string     `json:"content"`
+	UpdatedAt *time.Time `json:"updated_at"`
+}
+
+func (e EncounterResult) ToString() string {
+	return fmt.Sprintf(`路遇笔记标题：%s；路遇笔记内容：%s；`, e.Title, e.Content)
+}

app/service/rag/curd/base_curd.go

@@ -0,0 +1,37 @@
+package curd
+
+import (
+	"catface/app/global/consts"
+	"catface/app/model_res"
+	"fmt"
+)
+
+func TopK(mode string, embedding []float64, k int) (temp []model_res.DocInterface, err error) {
+	switch mode {
+	case consts.RagChatModeKnowledge:
+		results, err := CreateDocCurdFactory().TopK(embedding, k)
+		if err != nil {
+			return nil, fmt.Errorf("TopK: 获取知识库TopK失败: %w", err)
+		}
+		for _, result := range results {
+			temp = append(temp, result)
+		}
+
+	case consts.RagChatModeDiary:
+		results, err := CreateEncounterCurdFactory().TopK(embedding, k)
+		if err != nil {
+			return nil, fmt.Errorf("TopK: 获取路遇笔记TopK失败: %w", err)
+		}
+		for _, result := range results {
+			temp = append(temp, result)
+		}
+
+	default:
+		if mode == "" {
+			err = fmt.Errorf("TopK: mode不能为空")
+		} else {
+			err = fmt.Errorf("TopK: 不支持的mode: %s", mode)
+		}
+	}
+	return temp, err
+}

app/service/rag/curd/encounter_curd.go

@@ -0,0 +1,42 @@
+package curd
+
+import (
+	"catface/app/model"
+	"catface/app/model_es"
+	"catface/app/model_res"
+)
+
+func CreateEncounterCurdFactory() *EncounterCurd {
+	return &EncounterCurd{
+		enc:    model.CreateEncounterFactory(""),
+		enc_es: model_es.CreateEncounterESFactory(nil),
+	}
+}
+
+type EncounterCurd struct {
+	enc    *model.Encounter
+	enc_es *model_es.Encounter
+}
+
+func (e *EncounterCurd) TopK(embedding []float64, k int) (temp []model_res.EncounterResult, err error) {
+	// ES: TopK
+	encounters_es, err := e.enc_es.TopK(embedding, k)
+	if err != nil {
+		return
+	}
+
+	// MySQL 补充信息
+	var ids []int64
+	for _, encounter := range encounters_es {
+		ids = append(ids, encounter.Id)
+	}
+	encounters := e.enc.ShowByIDs(ids, "id", "title", "content", "updated_at")
+	for _, encounter := range encounters {
+		for _, encounter_es := range encounters_es {
+			if encounter.Id == encounter_es.Id {
+				temp = append(temp, *model_res.NewEncounterResult(&encounter, &encounter_es))
+			}
+		}
+	}
+	return
+}

config/prompts.yml

@@ -22,4 +22,11 @@ Prompt:
       ···
       {context}
       ···
-      如果给定的知识库无法让你做出回答，请回答知识库中未找到符合的资料，我不知道。" 
+      如果给定的知识库无法让你做出回答，请回答知识库中未找到符合的资料，我不知道。"
+    Diary: "使用以知识库中找到的猫猫路遇日记来回答用户的问题，如果无法回答，请回答知识库中未找到符合的资料，我不知道。
+      问题: {question}
+      可参考的路遇日记：
+      ···
+      {context}
+      ···
+      如果给定的知识库无法让你做出回答，请回答知识库中未找到符合的资料，我不知道。"