From d3c9a7984cf74963e1e77916ff31ae45289bf819 Mon Sep 17 00:00:00 2001
From: Alexander Goncharov <lezzercringe@gmail.com>
Date: Wed, 4 Feb 2026 23:11:44 +0300
Subject: [PATCH] send system prompt separated from user prompt

---
 main.go | 55 ++++++++++++++++++++++++-------------------------------
 1 file changed, 24 insertions(+), 31 deletions(-)

diff --git a/main.go b/main.go
index 93923a9..3175d5f 100644
--- a/main.go
+++ b/main.go
@@ -24,25 +24,33 @@ type OpenAIPrompter struct {
 	log *slog.Logger
 }
 
+func composeSysPromptWithContext(systemPrompt string, req PromptRequest) string {
+	var b strings.Builder
+
+	b.WriteString(systemPrompt)
+	b.WriteString("\nИмя пользователя: ")
+	b.WriteString(req.Username)
+
+	if req.ReplyToContent != nil {
+		b.WriteString("\nПользователь отсылается на текст сообщения: ")
+		b.WriteString(*req.ReplyToContent)
+	}
+
+	return b.String()
+}
+
 func (p *OpenAIPrompter) Prompt(ctx context.Context, req PromptRequest) (*HighlyTrustedResponse, error) {
 	p.log.Info("new prompt request",
 		"req", req)
 
+	sysPrompt := composeSysPromptWithContext(p.cfg.SystemPrompt, req)
+
 	input := []responses.ResponseInputItemUnionParam{
 		{
 			OfMessage: &responses.EasyInputMessageParam{
 				Content: responses.EasyInputMessageContentUnionParam{
-					OfString: openai.String(p.cfg.SystemPrompt),
+					OfString: openai.String(sysPrompt),
 				},
-				Role: responses.EasyInputMessageRoleSystem,
-			},
-		},
-		{
-			OfMessage: &responses.EasyInputMessageParam{
-				Content: responses.EasyInputMessageContentUnionParam{
-					OfString: openai.String("Пользователя зовут " + req.Username),
-				},
-				Role: responses.EasyInputMessageRoleSystem,
 			},
 		},
 		{
@@ -55,21 +63,6 @@ func (p *OpenAIPrompter) Prompt(ctx context.Context, req PromptRequest) (*Highly
 		},
 	}
 
-	if req.OriginalPostContent != nil {
-		message := "Пользователь может ссылаться на текст поста, который он комментирует. Вот он: " +
-			*req.OriginalPostContent
-
-		input = append(input, responses.ResponseInputItemUnionParam{
-			OfMessage: &responses.EasyInputMessageParam{
-				Content: responses.EasyInputMessageContentUnionParam{
-					OfString: openai.String(message),
-				},
-				Role: responses.EasyInputMessageRoleDeveloper,
-				Type: responses.EasyInputMessageTypeMessage,
-			},
-		})
-	}
-
 	resp, err := p.cli.Responses.New(ctx, responses.ResponseNewParams{
 		Instructions: openai.String(p.cfg.SystemPrompt),
 		Input: responses.ResponseNewParamsInputUnion{
@@ -103,9 +96,9 @@ type HighlyTrustedResponse struct {
 }
 
 type PromptRequest struct {
-	Username            string
-	Question            string
-	OriginalPostContent *string
+	Username       string
+	Question       string
+	ReplyToContent *string
 }
 
 type Proompter interface {
@@ -158,9 +151,9 @@ func (a *App) handleMessage(ctx context.Context, msg *tgbotapi.Message) error {
 	}
 
 	response, err := a.proompter.Prompt(ctx, PromptRequest{
-		Question:            question,
-		OriginalPostContent: repliedToContent,
-		Username:            username,
+		Question:       question,
+		ReplyToContent: repliedToContent,
+		Username:       username,
 	})
 	if err != nil {
 		return fmt.Errorf("prompting: %w", err)