add completeted tasks endpoint

service/src/main/java/com/telephoners/krakyournet/ctf/repositories/TasksRepository.java

 package com.telephoners.krakyournet.ctf.repositories;
 
-import com.telephoners.krakyournet.ctf.core.ApplicationConfiguration;
-import com.telephoners.krakyournet.ctf.helpers.DBObjectUtils;
 import com.telephoners.krakyournet.ctf.beans.Flag;
 import com.telephoners.krakyournet.ctf.beans.Solution;
 import com.telephoners.krakyournet.ctf.beans.Team;
 import com.telephoners.krakyournet.ctf.beans.User;
 import com.telephoners.krakyournet.ctf.beans.tasks.Task;
+import com.telephoners.krakyournet.ctf.core.ApplicationConfiguration;
+import com.telephoners.krakyournet.ctf.helpers.DBObjectUtils;
 import javafx.util.Pair;
 import org.apache.commons.codec.binary.Hex;
 import org.mongodb.morphia.Datastore;
@@ -174,4 +174,18 @@ public class TasksRepository implements Repository
     {
         datastore.getCollection(Task.class).drop();
     }
+
+    //todo: should it be here?
+    public List<Integer> getCompletedTasks(Team team)
+    {
+        Map<Integer, List<String>> teamSolutions = solutionsRepository.getTeamSolutions(team);
+        return getAll().stream()
+                .filter(task -> {
+                    int numberOfFlags = task.getFlags().size();
+                    List<String> teamTaskSolutions = teamSolutions.get(task.getLevel());
+                    return teamTaskSolutions != null && teamTaskSolutions.size() == numberOfFlags;
+                })
+                .map(Task::getLevel)
+                .collect(Collectors.toList());
+    }
 }
\ No newline at end of file

service/src/main/java/com/telephoners/krakyournet/ctf/resources/SolutionsResource.java

@@ -48,6 +48,14 @@ public class SolutionsResource
         return Response.status(Response.Status.NOT_ACCEPTABLE).build();
     }
 
+    @GET
+    @Path("/completed")
+    public List<Integer> getTeamCompletedTasks(@Auth User user)
+    {
+        Optional<Team> team = teamsRepository.getTeamByUser(user);
+        return tasksRepository.getCompletedTasks(team.get());
+    }
+
     @GET
     @Path("/my")
     public Map<Integer, List<String>> getTeamSolutions(@Auth User user)
@@ -58,6 +66,7 @@ public class SolutionsResource
 
     @GET
     @Path("/all")
+    //todo: should return completed, not all flags?
     public Map<String, Map<Integer, List<String>>> getTeamsSolutions()
     {
         return teamsRepository.getAll()