From 7fd4fa474231d0c08f3e05d3cec3fb958b925a4a Mon Sep 17 00:00:00 2001
From: Eugen Eisler <eoeisler@gmail.com>
Date: Sat, 30 Nov 2024 20:44:31 +0100
Subject: [PATCH] fix: close #1173

---
 core/chatter.go             | 9 +++++++++
 plugins/db/fsdb/sessions.go | 3 +--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/core/chatter.go b/core/chatter.go
index a11684ce..31817744 100644
--- a/core/chatter.go
+++ b/core/chatter.go
@@ -31,6 +31,15 @@ func (o *Chatter) Send(request *common.ChatRequest, opts *common.ChatOptions) (s
 		return
 	}
 
+	vendorMessages := session.GetVendorMessages()
+	if len(vendorMessages) == 0 {
+		if session.Name != "" {
+			err = o.db.Sessions.SaveSession(session)
+		}
+		err = fmt.Errorf("no messages provided")
+		return
+	}
+
 	if opts.Model == "" {
 		opts.Model = o.model
 	}
diff --git a/plugins/db/fsdb/sessions.go b/plugins/db/fsdb/sessions.go
index 61156bae..2f278744 100644
--- a/plugins/db/fsdb/sessions.go
+++ b/plugins/db/fsdb/sessions.go
@@ -58,8 +58,7 @@ func (o *Session) Append(messages ...*goopenai.ChatCompletionMessage) {
 }
 
 func (o *Session) GetVendorMessages() (ret []*goopenai.ChatCompletionMessage) {
-	if o.vendorMessages == nil {
-		o.vendorMessages = []*goopenai.ChatCompletionMessage{}
+	if len(o.vendorMessages) == 0 {
 		for _, message := range o.Messages {
 			o.appendVendorMessage(message)
 		}