feat: add minimax tts

relay/channel/minimax/relay-minimax.go

@@ -3,9 +3,23 @@ package minimax
 import (
 	"fmt"
 
+	channelconstant "github.com/QuantumNous/new-api/constant"
 	relaycommon "github.com/QuantumNous/new-api/relay/common"
+	"github.com/QuantumNous/new-api/relay/constant"
 )
 
 func GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
-	return fmt.Sprintf("%s/v1/text/chatcompletion_v2", info.ChannelBaseUrl), nil
+	baseUrl := info.ChannelBaseUrl
+	if baseUrl == "" {
+		baseUrl = channelconstant.ChannelBaseURLs[channelconstant.ChannelTypeMiniMax]
+	}
+
+	switch info.RelayMode {
+	case constant.RelayModeChatCompletions:
+		return fmt.Sprintf("%s/v1/text/chatcompletion_v2", baseUrl), nil
+	case constant.RelayModeAudioSpeech:
+		return fmt.Sprintf("%s/v1/t2a_v2", baseUrl), nil
+	default:
+		return "", fmt.Errorf("unsupported relay mode: %d", info.RelayMode)
+	}
 }