chore: refactor code to simplify the understanding

embeddings.go

@@ -277,25 +277,27 @@ func (r EmbeddingRequestTokens) Convert() EmbeddingRequest {
 //
 // Body should be of type EmbeddingRequestStrings for embedding strings or EmbeddingRequestTokens
 // for embedding groups of text already converted to tokens.
-func (c *Client) CreateEmbeddings(ctx context.Context, conv EmbeddingRequestConverter) (EmbeddingResponse, error) { //nolint:lll
+func (c *Client) CreateEmbeddings(
+	ctx context.Context,
+	conv EmbeddingRequestConverter,
+) (res EmbeddingResponse, err error) {
 	baseReq := conv.Convert()
-	response := EmbeddingResponse{}
-
 	req, err := c.newRequest(ctx, http.MethodPost, c.fullURL("/embeddings", baseReq.Model.String()), withBody(baseReq))
 	if err != nil {
-		return response, err
+		return
 	}
 
-	var embeddingResponse any = &response
-	if baseReq.EncodingFormat == EmbeddingEncodingFormatBase64 {
-		embeddingResponse = &EmbeddingResponseBase64{}
+	if baseReq.EncodingFormat != EmbeddingEncodingFormatBase64 {
+		err = c.sendRequest(req, &res)
+		return
 	}
 
-	err = c.sendRequest(req, embeddingResponse)
-
-	if baseReq.EncodingFormat == EmbeddingEncodingFormatBase64 {
-		response, err = embeddingResponse.(*EmbeddingResponseBase64).ToEmbeddingResponse()
+	base64Response := &EmbeddingResponseBase64{}
+	err = c.sendRequest(req, base64Response)
+	if err != nil {
+		return
 	}
 
-	return response, err
+	res, err = base64Response.ToEmbeddingResponse()
+	return
 }