From a8ac8a25d522dceda91112b3ca92f2559a808316 Mon Sep 17 00:00:00 2001
From: CalciumIon <1808837298@qq.com>
Date: Sat, 24 Aug 2024 17:15:55 +0800
Subject: [PATCH] feat: format claude messages when first role is not user

---
 relay/channel/claude/relay-claude.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/relay/channel/claude/relay-claude.go b/relay/channel/claude/relay-claude.go
index 47abe313..1c9d4e61 100644
--- a/relay/channel/claude/relay-claude.go
+++ b/relay/channel/claude/relay-claude.go
@@ -139,6 +139,7 @@ func RequestOpenAI2ClaudeMessage(textRequest dto.GeneralOpenAIRequest) (*ClaudeR
 	}
 
 	claudeMessages := make([]ClaudeMessage, 0)
+	isFirstMessage := true
 	for _, message := range formatMessages {
 		if message.Role == "system" {
 			if message.IsStringContent() {
@@ -154,6 +155,22 @@ func RequestOpenAI2ClaudeMessage(textRequest dto.GeneralOpenAIRequest) (*ClaudeR
 				claudeRequest.System = content
 			}
 		} else {
+			if isFirstMessage {
+				isFirstMessage = false
+				if message.Role != "user" {
+					// fix: first message is assistant, add user message
+					claudeMessage := ClaudeMessage{
+						Role: "user",
+						Content: []ClaudeMediaMessage{
+							{
+								Type: "text",
+								Text: "...",
+							},
+						},
+					}
+					claudeMessages = append(claudeMessages, claudeMessage)
+				}
+			}
 			claudeMessage := ClaudeMessage{
 				Role: message.Role,
 			}