feat: add wan2.5-i2i-preview support

relay/channel/ali/image_wan.go

@@ -0,0 +1,39 @@
+package ali
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/QuantumNous/new-api/common"
+	"github.com/QuantumNous/new-api/dto"
+	relaycommon "github.com/QuantumNous/new-api/relay/common"
+
+	"github.com/gin-gonic/gin"
+)
+
+func oaiFormEdit2WanxImageEdit(c *gin.Context, info *relaycommon.RelayInfo, request dto.ImageRequest) (*AliImageRequest, error) {
+	var err error
+	var imageRequest AliImageRequest
+	imageRequest.Model = request.Model
+	imageRequest.ResponseFormat = request.ResponseFormat
+	wanInput := WanImageInput{
+		Prompt: request.Prompt,
+	}
+
+	if err := common.UnmarshalBodyReusable(c, &wanInput); err != nil {
+		return nil, err
+	}
+	if wanInput.Images, err = getImageBase64sFromForm(c, "image"); err != nil {
+		return nil, fmt.Errorf("get image base64s from form failed: %w", err)
+	}
+	wanParams := WanImageParameters{
+		N: int(request.N),
+	}
+	imageRequest.Input = wanInput
+	imageRequest.Parameters = wanParams
+	return &imageRequest, nil
+}
+
+func isWanModel(modelName string) bool {
+	return strings.Contains(modelName, "wan")
+}