fix: use channel type to determine api type (close #321)

* fix: baseURL not working in APITypePaLM

* chore: use the same logic as claude

---------

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

controller/channel-test.go

@@ -16,6 +16,14 @@ import (
 
 func testChannel(channel *model.Channel, request ChatRequest) (error, *OpenAIError) {
 	switch channel.Type {
+	case common.ChannelTypePaLM:
+		fallthrough
+	case common.ChannelTypeAnthropic:
+		fallthrough
+	case common.ChannelTypeBaidu:
+		fallthrough
+	case common.ChannelTypeZhipu:
+		return errors.New("该渠道类型当前版本不支持测试，请手动测试"), nil
 	case common.ChannelTypeAzure:
 		request.Model = "gpt-35-turbo"
 	default:

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")