fix: convert system message to user message for claude

* fix: baseURL not working in APITypePaLM

* chore: use the same logic as claude

---------

Co-authored-by: JustSong <songquanpeng@foxmail.com>

controller/relay-baidu.go

@@ -57,10 +57,21 @@ type BaiduChatStreamResponse struct {
 func requestOpenAI2Baidu(request GeneralOpenAIRequest) *BaiduChatRequest {
 	messages := make([]BaiduMessage, 0, len(request.Messages))
 	for _, message := range request.Messages {
-		messages = append(messages, BaiduMessage{
-			Role:    message.Role,
-			Content: message.Content,
-		})
+		if message.Role == "system" {
+			messages = append(messages, BaiduMessage{
+				Role:    "user",
+				Content: message.Content,
+			})
+			messages = append(messages, BaiduMessage{
+				Role:    "assistant",
+				Content: "Okay",
+			})
+		} else {
+			messages = append(messages, BaiduMessage{
+				Role:    message.Role,
+				Content: message.Content,
+			})
+		}
 	}
 	return &BaiduChatRequest{
 		Messages: messages,

controller/relay-claude.go

@@ -69,11 +69,11 @@ func requestOpenAI2Claude(textRequest GeneralOpenAIRequest) *ClaudeRequest {
 			prompt += fmt.Sprintf("\n\nHuman: %s", message.Content)
 		} else if message.Role == "assistant" {
 			prompt += fmt.Sprintf("\n\nAssistant: %s", message.Content)
-		} else {
-			// ignore other roles
+		} else if message.Role == "system" {
+			prompt += fmt.Sprintf("\n\nSystem: %s", message.Content)
 		}
-		prompt += "\n\nAssistant:"
 	}
+	prompt += "\n\nAssistant:"
 	claudeRequest.Prompt = prompt
 	return &claudeRequest
 }

controller/relay-text.go

@@ -85,13 +85,14 @@ func relayTextHelper(c *gin.Context, relayMode int) *OpenAIErrorWithStatusCode {
 		}
 	}
 	apiType := APITypeOpenAI
-	if strings.HasPrefix(textRequest.Model, "claude") {
+	switch channelType {
+	case common.ChannelTypeAnthropic:
 		apiType = APITypeClaude
-	} else if strings.HasPrefix(textRequest.Model, "ERNIE") {
+	case common.ChannelTypeBaidu:
 		apiType = APITypeBaidu
-	} else if strings.HasPrefix(textRequest.Model, "PaLM") {
+	case common.ChannelTypePaLM:
 		apiType = APITypePaLM
-	} else if strings.HasPrefix(textRequest.Model, "chatglm_") {
+	case common.ChannelTypeZhipu:
 		apiType = APITypeZhipu
 	}
 	baseURL := common.ChannelBaseURLs[channelType]
@@ -140,6 +141,9 @@ func relayTextHelper(c *gin.Context, relayMode int) *OpenAIErrorWithStatusCode {
 		fullRequestURL += "?access_token=" + apiKey // TODO: access token expire in 30 days
 	case APITypePaLM:
 		fullRequestURL = "https://generativelanguage.googleapis.com/v1beta2/models/chat-bison-001:generateMessage"
+		if baseURL != "" {
+			fullRequestURL = fmt.Sprintf("%s/v1beta2/models/chat-bison-001:generateMessage", baseURL)
+		}
 		apiKey := c.Request.Header.Get("Authorization")
 		apiKey = strings.TrimPrefix(apiKey, "Bearer ")
 		fullRequestURL += "?key=" + apiKey

router/relay-router.go

@@ -12,7 +12,7 @@ func SetRelayRouter(router *gin.Engine) {
 	modelsRouter := router.Group("/v1/models")
 	modelsRouter.Use(middleware.TokenAuth())
 	{
-		modelsRouter.GET("/", controller.ListModels)
+		modelsRouter.GET("", controller.ListModels)
 		modelsRouter.GET("/:model", controller.RetrieveModel)
 	}
 	relayV1Router := router.Group("/v1")