feat: implement new handlers for audio, image, embedding, and responses processing

- Added new handlers: AudioHelper, ImageHelper, EmbeddingHelper, and ResponsesHelper to manage respective requests.
- Updated ModelMappedHelper to accept request parameters for better model mapping.
- Enhanced error handling and validation across new handlers to ensure robust request processing.
- Introduced support for new relay formats in relay_info and updated relevant functions accordingly.

relay/helper/model_mapped.go

@@ -4,12 +4,14 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	common2 "one-api/common"
+	"one-api/dto"
 	"one-api/relay/common"
 
 	"github.com/gin-gonic/gin"
 )
 
-func ModelMappedHelper(c *gin.Context, info *common.RelayInfo) error {
+func ModelMappedHelper(c *gin.Context, info *common.RelayInfo, request any) error {
 	// map model name
 	modelMapping := c.GetString("model_mapping")
 	if modelMapping != "" && modelMapping != "{}" {
@@ -50,5 +52,41 @@ func ModelMappedHelper(c *gin.Context, info *common.RelayInfo) error {
 			info.UpstreamModelName = currentModel
 		}
 	}
+	if request != nil {
+		switch info.RelayFormat {
+		case common.RelayFormatGemini:
+			// Gemini 模型映射
+		case common.RelayFormatClaude:
+			if claudeRequest, ok := request.(*dto.ClaudeRequest); ok {
+				claudeRequest.Model = info.UpstreamModelName
+			}
+		case common.RelayFormatOpenAIResponses:
+			if openAIResponsesRequest, ok := request.(*dto.OpenAIResponsesRequest); ok {
+				openAIResponsesRequest.Model = info.UpstreamModelName
+			}
+		case common.RelayFormatOpenAIAudio:
+			if openAIAudioRequest, ok := request.(*dto.AudioRequest); ok {
+				openAIAudioRequest.Model = info.UpstreamModelName
+			}
+		case common.RelayFormatOpenAIImage:
+			if imageRequest, ok := request.(*dto.ImageRequest); ok {
+				imageRequest.Model = info.UpstreamModelName
+			}
+		case common.RelayFormatRerank:
+			if rerankRequest, ok := request.(*dto.RerankRequest); ok {
+				rerankRequest.Model = info.UpstreamModelName
+			}
+		case common.RelayFormatEmbedding:
+			if embeddingRequest, ok := request.(*dto.EmbeddingRequest); ok {
+				embeddingRequest.Model = info.UpstreamModelName
+			}
+		default:
+			if openAIRequest, ok := request.(*dto.GeneralOpenAIRequest); ok {
+				openAIRequest.Model = info.UpstreamModelName
+			} else {
+				common2.LogWarn(c, fmt.Sprintf("model mapped but request type %T not supported", request))
+			}
+		}
+	}
 	return nil
 }