changed the way images are passed

anthropic.go

@@ -58,12 +58,20 @@ func (a anthropic) requestToAnthropicRequest(req Request) anth.MessagesRequest {
 				})
 			}
 
-			if msg.ImageBase64 != "" {
-				m.Content = append(m.Content, anth.NewImageMessageContent(anth.MessageContentImageSource{
-					Type:      "base64",
-					MediaType: "image/png",
-					Data:      msg.ImageBase64,
-				}))
+			for _, img := range msg.Images {
+				if img.Base64 != "" {
+					m.Content = append(m.Content, anth.NewImageMessageContent(anth.MessageContentImageSource{
+						Type:      "base64",
+						MediaType: img.ContentType,
+						Data:      img.Base64,
+					}))
+				} else if img.Url != "" {
+					m.Content = append(m.Content, anth.NewImageMessageContent(anth.MessageContentImageSource{
+						Type:      "url",
+						MediaType: img.ContentType,
+						Data:      img.Url,
+					}))
+				}
 			}
 
 			// if this has the same role as the previous message, we can append it to the previous message