fix add solution - temporary ssolution

service/src/main/java/api/TasksResource.java

@@ -61,6 +61,7 @@ public class TasksResource
 //    }
 
 
+    //todo: move to solutions resource
     @POST
     public boolean submitSolution(@Auth User user,
                                   String flag) throws Exception {

service/src/main/java/repositories/SolutionsRepository.java

@@ -2,9 +2,12 @@ package repositories;
 
 import database.MongoDBConnector;
 import objects.Solution;
+import org.bson.Document;
 
 import javax.inject.Inject;
 import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
 /**
@@ -30,7 +33,13 @@ public class SolutionsRepository implements Repository {
     }
 
     public void add(Solution solution) { //todo
-//        mongoDBConnector.addDocument("solutions", new Document(solution.toMap()));
+        //todo: object/string
+        Map<String, Object> retypedMap = solution.toMap().entrySet().stream()
+                .collect(Collectors.toMap(
+                        (Function<Map.Entry<String, String>, String>) Map.Entry::getKey,
+                        (Function<Map.Entry<String, String>, Object>) Map.Entry::getValue
+                ));
+        mongoDBConnector.addDocument("solutions", new Document(retypedMap));
     }
 
     public void clean() {

service/src/main/java/repositories/TasksRepository.java

@@ -92,6 +92,7 @@ public class TasksRepository implements Repository {
 
     public boolean checkFlag(String username, String flagValue) throws Exception {
         return compareHash(flagValue, username);
+        //todo: accept solution should be here
     }
 
     public Optional<String> getUserTaskFlag(String username, String taskId) {