JFJOchReader: Add ReadAllSpots option to handle reading just spot finding result

reader/JFJochHttpReader.cpp

@@ -374,3 +374,31 @@ void JFJochHttpReader::UploadUserMask(const std::vector<uint32_t>& mask) {
         throw JFJochException(JFJochExceptionCategory::InputParameterInvalid,
                               "Server rejected user mask upload");
 }
+
+std::vector<SpotToSave> JFJochHttpReader::ReadSpots(int64_t image) const {
+    std::unique_lock ul(http_mutex);
+
+    if (image < 0)
+        throw JFJochException(JFJochExceptionCategory::InputParameterInvalid,
+            "Image number must be non-negative");
+
+    if (addr.empty())
+        return {};
+
+    httplib::Client cli_cmd(addr);
+    auto res = cli_cmd.Get("/image_buffer/image.cbor?id=" + std::to_string(image));
+
+    if (!res || res->status != httplib::StatusCode::OK_200 || res->body.empty())
+        return {};
+
+    try {
+        auto msg = CBORStream2Deserialize(res->body);
+
+        if (msg->msg_type != CBORImageType::IMAGE)
+            return {};
+
+        return msg->data_message->spots;
+    } catch (std::exception &e) {
+        return {};
+    }
+}