1 files changed, 41 insertions, 20 deletions

diff --git a/src/main/java/design/persistence/JSONLeagueDatabase.java b/src/main/java/design/persistence/JSONLeagueDatabase.java
index 6f3f2d2..b5f4bc3 100644
--- a/src/main/java/design/persistence/JSONLeagueDatabase.java
+++ b/src/main/java/design/persistence/JSONLeagueDatabase.java
@@ -1,14 +1,7 @@
 package design.persistence;
 
-import com.fasterxml.jackson.annotation.JsonAutoDetect;
-import com.fasterxml.jackson.annotation.JsonCreator;
-import com.fasterxml.jackson.annotation.PropertyAccessor;
-import com.fasterxml.jackson.core.StreamReadFeature;
 import com.fasterxml.jackson.databind.*;
-import com.fasterxml.jackson.databind.json.JsonMapper;
 import com.fasterxml.jackson.databind.module.SimpleModule;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;
 import design.model.Course;
 import design.model.Golfer;
 import design.model.League;
@@ -30,6 +23,12 @@ public class JSONLeagueDatabase implements LeagueDatabase {
         return INSTANCE;
     }
 
+    // static instance strictly for testing, to not add data to leaguedb.json
+    static JSONLeagueDatabase testInstance(String filename) {
+        INSTANCE = new JSONLeagueDatabase(filename);
+        return INSTANCE;
+    }
+
     private final Map<Integer, League> cache;
     private final ObjectMapper mapper;
     private final File file;
@@ -38,20 +37,10 @@ public class JSONLeagueDatabase implements LeagueDatabase {
     public JSONLeagueDatabase(String filename) {
         this.file = new File(filename);
         this.cache = new HashMap<>();
-        this.mapper = JsonMapper.builder().enable(StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION).build();
+        this.mapper = new ObjectMapper();
 
-        SimpleModule module = new SimpleModule();
-        module.addDeserializer(Course.class, new Serializers.CourseIdDeserializer());
-        module.addSerializer(Course.class, new Serializers.CourseIdSerializer());
-        module.addDeserializer(Golfer.class, new Serializers.GolferUsernameDeserializer());
-        module.addSerializer(Golfer.class, new Serializers.GolferUsernameSerializer());
-        module.addSerializer(Map.class, new Serializers.MapListSerializer());
-        module.addDeserializer(Map.class, new Serializers.MapListDeserializer());
-        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-        mapper.registerModule(module);
-        mapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
-        mapper.registerModule(new ParameterNamesModule(JsonCreator.Mode.PROPERTIES));
-        mapper.registerModule(new JavaTimeModule());
+        Serializers.configureMapper(mapper);
+        mapper.registerModule(this.getJacksonModule());
 
         try {
             load();
@@ -101,4 +90,36 @@ public class JSONLeagueDatabase implements LeagueDatabase {
         cache.put(league.getId(), league);
         save();
     }
+
+    @Override
+    public void importData(Object rawData) throws IOException {
+        if (!(rawData instanceof League[] data)) {
+            throw new ClassCastException();
+        }
+        cache.clear();
+        for (League league : data) {
+            cache.put(league.getId(), league);
+        }
+        save();
+    }
+
+    @Override
+    public League[] exportData() {
+        return getLeagues();
+    }
+
+    @Override
+    public SimpleModule getJacksonModule() {
+        SimpleModule module = new SimpleModule();
+        module.addDeserializer(Course.class, new Serializers.CourseIdDeserializer());
+        module.addSerializer(Course.class, new Serializers.CourseIdSerializer());
+        module.addDeserializer(Golfer.class, new Serializers.GolferUsernameDeserializer());
+        module.addSerializer(Golfer.class, new Serializers.GolferUsernameSerializer());
+        return module;
+    }
+
+    @Override
+    public Class<?> getTargetClass() {
+        return League[].class;
+    }
 }