Implemented JSON De/serializers, configs can now save/load to file properly

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/backend/Backend.java

@@ -4,16 +4,28 @@ import android.util.Log;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
-import com.google.gson.internal.LinkedTreeMap;
 
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
 import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
 import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
-import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Preset;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Presets;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Variable;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.ActionDeserializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.ActionSerializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.ConfigDeserializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.ConfigSerializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.ConfigurationDeserializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.ConfigurationSerializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.GroupDeserializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.GroupSerializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.PresetsDeserializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.PresetsSerializer;
 import org.timecrafters.TimeCraftersConfigurationTool.serializers.SettingsDeserializer;
 import org.timecrafters.TimeCraftersConfigurationTool.serializers.SettingsSerializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.VariableDeserializer;
+import org.timecrafters.TimeCraftersConfigurationTool.serializers.VariableSerializer;
 import org.timecrafters.TimeCraftersConfigurationTool.tacnet.Server;
 
-import java.io.BufferedInputStream;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -21,13 +33,8 @@ import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.FilenameFilter;
 import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Date;
-import java.util.LinkedHashMap;
-import java.util.Map;
 
 public class Backend {
     private static final String TAG = "Backend";
@@ -49,8 +56,6 @@ public class Backend {
         loadSettings();
         if (!settings.config.isEmpty()) {
             loadConfig(settings.config);
-        } else {
-            config = new Config("DEBUG DEBUG DEBUG");
         }
         tacnet = new TACNET();
 
@@ -105,6 +110,8 @@ public class Backend {
         config.getConfiguration().updatedAt = new Date();
         config.getConfiguration().revision += 1;
         configChanged = true;
+
+        saveConfig();
     }
 
     public boolean isConfigChanged() { return configChanged; }
@@ -114,14 +121,18 @@ public class Backend {
         File file = new File(path);
 
         if (file.exists() && file.isFile()) {
-            config = new Config(name, path);
+            config = gsonForConfig().fromJson(readFromFile(path), Config.class);
+            config.setName(name);
         }
     }
 
-    public boolean saveConfig(String name) {
+    public boolean saveConfig() {
-        // TODO: Implement save config
+        if (config == null) { return false; }
+
+        final String path = "" + TAC.CONFIGS_PATH + File.separator + getConfig().getName() + ".json";
         configChanged = false;
-        return  false;
+
+        return writeToFile(path, gsonForConfig().toJson(config));
     }
 
     public void uploadConfig() {
@@ -173,13 +184,26 @@ public class Backend {
         return list;
     }
 
-    // TODO: Write De/serializers for config
     public Gson gsonForConfig() {
-//        return new GsonBuilder()
+        return new GsonBuilder()
-//                .registerTypeAdapter(Config.class, new ConfigSerializer())
+                .registerTypeAdapter(Config.class, new ConfigSerializer())
-//                .registerTypeAdapter(COnfig.class, new ConfigDeserializer())
+                .registerTypeAdapter(Config.class, new ConfigDeserializer())
-//                .create();
+
-        return new GsonBuilder().create();
+                .registerTypeAdapter(Configuration.class, new ConfigurationSerializer())
+                .registerTypeAdapter(Configuration.class, new ConfigurationDeserializer())
+
+                .registerTypeAdapter(Group.class, new GroupSerializer())
+                .registerTypeAdapter(Group.class, new GroupDeserializer())
+
+                .registerTypeAdapter(Action.class, new ActionSerializer())
+                .registerTypeAdapter(Action.class, new ActionDeserializer())
+
+                .registerTypeAdapter(Variable.class, new VariableSerializer())
+                .registerTypeAdapter(Variable.class, new VariableDeserializer())
+
+                .registerTypeAdapter(Presets.class, new PresetsSerializer())
+                .registerTypeAdapter(Presets.class, new PresetsDeserializer())
+                .create();
     }
 
     public void settingsChanged() {

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/backend/Config.java

@@ -1,12 +1,9 @@
 package org.timecrafters.TimeCraftersConfigurationTool.backend;
 
-import com.google.gson.Gson;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
-
 import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
 import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
-import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Presets;
-import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Variable;
-import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Preset;
 
 import java.util.ArrayList;
 import java.util.Date;
@@ -15,48 +12,33 @@ public class Config {
     private String name;
     private Configuration configuration;
     private ArrayList<Group> groups;
-    private ArrayList<Preset> presets;
+    private Presets presets;
 
     public Config(String name) {
         this.name = name;
-        this.configuration = new Configuration(new Date(), new Date(), TAC.CONFIG_SPEC_VERSION, 32);
+        this.configuration = new Configuration(new Date(), new Date(), TAC.CONFIG_SPEC_VERSION, 0);
         groups = new ArrayList<>();
-        presets = new ArrayList<>();
+        presets = new Presets(new ArrayList<Group>(), new ArrayList<Action>());
     }
 
-
+    public Config(Configuration configuration, ArrayList<Group> groups, Presets presets) {
-    public Config(String name, String path) {
-        this.name = name;
-        parse(path);
-    }
-
-    public Config(Configuration configuration, ArrayList<Group> groups, ArrayList<Preset> presets) {
         this.configuration = configuration;
         this.groups = groups;
         this.presets = presets;
     }
 
     public String getName() { return name; }
+    public void setName(String name) { this.name = name; }
 
     public Configuration getConfiguration() {
         return configuration;
     }
 
-    public ArrayList<Preset> getPresets() {
+    public Presets getPresets() {
         return presets;
     }
 
     public ArrayList<Group> getGroups() {
         return groups;
     }
-
-    private void parse(String path) {
-        Gson gson = new Gson();
-        String json = Backend.instance().readFromFile(path);
-        Config config = gson.fromJson(json, Config.class);
-
-        this.configuration = config.configuration;
-        this.groups = config.groups;
-        this.presets = config.presets;
-    }
 }

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/backend/config/Configuration.java

@@ -3,6 +3,8 @@ package org.timecrafters.TimeCraftersConfigurationTool.backend.config;
 import java.util.Date;
 
 public class Configuration {
+    public static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss Z";
+
     public Date createdAt, updatedAt;
     private int specVersion;
     public int revision;

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/backend/config/Presets.java

@@ -3,12 +3,20 @@ package org.timecrafters.TimeCraftersConfigurationTool.backend.config;
 
 import java.util.ArrayList;
 
-public class Preset {
+public class Presets {
     private ArrayList<Group> groups;
     private ArrayList<Action> actions;
 
-    public Preset(ArrayList<Group> groups, ArrayList<Action> actions) {
+    public Presets(ArrayList<Group> groups, ArrayList<Action> actions) {
         this.groups = groups;
         this.actions = actions;
     }
+
+    public ArrayList<Group> getGroups() {
+        return groups;
+    }
+
+    public ArrayList<Action> getActions() {
+        return actions;
+    }
 }

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/ActionDeserializer.java

@@ -0,0 +1,33 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Variable;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class ActionDeserializer implements JsonDeserializer<Action> {
+    @Override
+    public Action deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
+        JsonObject jsonObject = json.getAsJsonObject();
+
+        final String name = jsonObject.get("name").getAsString();
+        final String comment = jsonObject.get("comment").getAsString();
+        final boolean enabled = jsonObject.get("enabled").getAsBoolean();
+        Variable[] variablesArray = context.deserialize(jsonObject.get("variables"), Variable[].class);
+
+        List<Variable> variablesList = Arrays.asList(variablesArray);
+        ArrayList<Variable> variables = new ArrayList<>(variablesList);
+
+        return new Action(name, comment, enabled, variables);
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/ActionSerializer.java

@@ -0,0 +1,27 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Variable;
+
+import java.lang.reflect.Type;
+
+public class ActionSerializer implements JsonSerializer<Action> {
+    @Override
+    public JsonElement serialize(Action action, Type type, JsonSerializationContext context) {
+        JsonObject container = new JsonObject();
+
+        container.add("name", new JsonPrimitive(action.name));
+        container.add("comment", new JsonPrimitive(action.comment));
+        container.add("enabled", new JsonPrimitive(action.enabled));
+        container.add("variables", context.serialize(action.getVariables().toArray(), Variable[].class));
+
+        return container;
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/ConfigDeserializer.java

@@ -0,0 +1,34 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.Config;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Presets;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class ConfigDeserializer implements JsonDeserializer<Config> {
+    @Override
+    public Config deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
+        JsonObject jsonObject = json.getAsJsonObject();
+        JsonObject data = jsonObject.get("data").getAsJsonObject();
+
+        Configuration configuration = context.deserialize(jsonObject.get("config"), Configuration.class);
+        Group[] groupsArray = context.deserialize(data.get("groups"), Group[].class);
+        List<Group> groupsList = Arrays.asList(groupsArray);
+        ArrayList<Group> groups = new ArrayList<>(groupsList);
+
+        Presets presets = context.deserialize(data.get("presets"), Presets.class);
+
+        return new Config(configuration, groups, presets);
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/ConfigSerializer.java

@@ -0,0 +1,32 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.Config;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+
+import java.lang.reflect.Type;
+
+public class ConfigSerializer implements JsonSerializer<Config> {
+    @Override
+    public JsonElement serialize(Config config, Type type, JsonSerializationContext context) {
+        JsonObject container = new JsonObject();
+        JsonObject result = new JsonObject();
+        JsonObject presets = new JsonObject();
+        container.add("config", context.serialize(config.getConfiguration(), Configuration.class));
+        result.add("groups", context.serialize(config.getGroups().toArray(), Group[].class));
+
+        presets.add("groups", context.serialize(config.getPresets().getGroups().toArray(), Group[].class));
+        presets.add("actions", context.serialize(config.getPresets().getActions().toArray(), Action[].class));
+
+        result.add("presets", presets);
+        container.add("data", result);
+
+        return container;
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/ConfigurationDeserializer.java

@@ -0,0 +1,36 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
+
+import java.lang.reflect.Type;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+public class ConfigurationDeserializer implements JsonDeserializer<Configuration> {
+    @Override
+    public Configuration deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
+        JsonObject config = json.getAsJsonObject();
+
+        SimpleDateFormat dateFormat = new SimpleDateFormat(Configuration.DATE_FORMAT);
+        Date createdAt = new Date();
+        Date updatedAt = new Date();
+        try {
+            createdAt = dateFormat.parse(config.get("created_at").getAsString());
+            updatedAt = dateFormat.parse(config.get("updated_at").getAsString());
+        } catch (ParseException e) {
+            e.printStackTrace();
+        }
+
+        final int spec_version = config.get("spec_version").getAsInt();
+        final int revision = config.get("revision").getAsInt();
+
+        return new Configuration(createdAt, updatedAt, spec_version, revision);
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/ConfigurationSerializer.java

@@ -0,0 +1,29 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Variable;
+
+import java.lang.reflect.Type;
+import java.text.SimpleDateFormat;
+
+public class ConfigurationSerializer implements JsonSerializer<Configuration> {
+    @Override
+    public JsonElement serialize(Configuration configuration, Type type, JsonSerializationContext context) {
+        JsonObject container = new JsonObject();
+
+        SimpleDateFormat dateFormat = new SimpleDateFormat(Configuration.DATE_FORMAT);
+
+        container.add("created_at", new JsonPrimitive(dateFormat.format(configuration.createdAt)));
+        container.add("updated_at", new JsonPrimitive(dateFormat.format(configuration.updatedAt)));
+        container.add("spec_version", new JsonPrimitive(configuration.getSpecVersion()));
+        container.add("revision", new JsonPrimitive(configuration.revision));
+
+        return container;
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/GroupDeserializer.java

@@ -0,0 +1,33 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.Config;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Presets;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class GroupDeserializer implements JsonDeserializer<Group> {
+    @Override
+    public Group deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
+        JsonObject jsonObject = json.getAsJsonObject();
+
+        final String name = jsonObject.get("name").getAsString();
+        Action[] actionsArray = context.deserialize(jsonObject.get("actions"), Action[].class);
+
+        List<Action> actionsList = Arrays.asList(actionsArray);
+        ArrayList<Action> actions = new ArrayList<>(actionsList);
+
+        return new Group(name, actions);
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/GroupSerializer.java

@@ -0,0 +1,26 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.Config;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Configuration;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+
+import java.lang.reflect.Type;
+
+public class GroupSerializer implements JsonSerializer<Group> {
+    @Override
+    public JsonElement serialize(Group group, Type type, JsonSerializationContext context) {
+        JsonObject container = new JsonObject();
+
+        container.add("name", new JsonPrimitive(group.name));
+        container.add("actions", context.serialize(group.getActions().toArray(), Action[].class));
+
+        return container;
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/PresetsDeserializer.java

@@ -0,0 +1,33 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Presets;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class PresetsDeserializer implements JsonDeserializer<Presets> {
+    @Override
+    public Presets deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
+        JsonObject jsonObject = json.getAsJsonObject();
+
+        Group[] GroupsArray = context.deserialize(jsonObject.get("groups"), Group[].class);
+        Action[] actionsArray = context.deserialize(jsonObject.get("actions"), Action[].class);
+
+        List<Group> groupsList = Arrays.asList(GroupsArray);
+        ArrayList<Group> groups = new ArrayList<>(groupsList);
+        List<Action> actionsList = Arrays.asList(actionsArray);
+        ArrayList<Action> actions = new ArrayList<>(actionsList);
+
+        return new Presets(groups, actions);
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/PresetsSerializer.java

@@ -0,0 +1,25 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Presets;
+
+import java.lang.reflect.Type;
+
+public class PresetsSerializer implements JsonSerializer<Presets> {
+    @Override
+    public JsonElement serialize(Presets presets, Type type, JsonSerializationContext context) {
+        JsonObject container = new JsonObject();
+
+        container.add("groups", context.serialize(presets.getGroups().toArray(), Group[].class));
+        container.add("actions", context.serialize(presets.getActions().toArray(), Action[].class));
+
+        return container;
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/VariableDeserializer.java

@@ -0,0 +1,28 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Action;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Group;
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Variable;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class VariableDeserializer implements JsonDeserializer<Variable> {
+    @Override
+    public Variable deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException {
+        JsonObject jsonObject = json.getAsJsonObject();
+
+        final String name = jsonObject.get("name").getAsString();
+        final String value = jsonObject.get("value").getAsString();
+
+        return new Variable(name, value);
+    }
+}

app/src/main/java/org/timecrafters/TimeCraftersConfigurationTool/serializers/VariableSerializer.java

@@ -0,0 +1,23 @@
+package org.timecrafters.TimeCraftersConfigurationTool.serializers;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import org.timecrafters.TimeCraftersConfigurationTool.backend.config.Variable;
+
+import java.lang.reflect.Type;
+
+public class VariableSerializer implements JsonSerializer<Variable> {
+    @Override
+    public JsonElement serialize(Variable variable, Type type, JsonSerializationContext context) {
+        JsonObject container = new JsonObject();
+
+        container.add("name", new JsonPrimitive(variable.name));
+        container.add("value", new JsonPrimitive(variable.rawValue()));
+
+        return container;
+    }
+}