CustomRecipeJson.java

package chbachman.armour.util.json;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

import net.minecraft.item.ItemStack;
import chbachman.api.upgrade.IUpgrade;
import chbachman.api.upgrade.Recipe;

import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonNull;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

public class CustomRecipeJson implements JsonDeserializer<Recipe>, JsonSerializer<Recipe> {

    @Override
    public JsonElement serialize(Recipe src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject json = new JsonObject();

        json.add("output", context.serialize(src.getRecipeOutput(), IUpgrade.class));
        
        if (src.modid != null) {
        	json.addProperty("modid", src.modid);
        }
        

        json.addProperty("width", src.width);
        json.addProperty("height", src.height);

        for (int i = 0; i < 3; i++) {

            JsonArray array = new JsonArray();

            for (int x = 0; x < 3; x++) {
                Object toSerialize = src.getInput()[i * 3 + x];

                if (toSerialize instanceof String) {
                    array.add(new JsonPrimitive((String) toSerialize));
                } else if (toSerialize instanceof ItemStack) {
                    array.add(context.serialize((ItemStack) toSerialize, ItemStack.class));
                }

                if (toSerialize == null) {
                    array.add(JsonNull.INSTANCE);
                }
            }

            json.add("row" + (i + 1), array);

        }

        return json;
    }

    @Override
    public Recipe deserialize(JsonElement element, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        JsonObject json = element.getAsJsonObject();

        IUpgrade output = context.deserialize(json.get("output"), IUpgrade.class);

        List<Object> list = new ArrayList<Object>();

        JsonArray array = new JsonArray();

        array.addAll(json.get("row1").getAsJsonArray());
        array.addAll(json.get("row2").getAsJsonArray());
        array.addAll(json.get("row3").getAsJsonArray());

        for (JsonElement e : array) {

            if (e.isJsonNull()) {
                list.add(null);
                continue;
            }

            if (!e.isJsonObject()) {
                list.add(e.getAsString());
                continue;
            }

            list.add((ItemStack) context.deserialize(e, ItemStack.class));
        }

        Recipe recipe = new Recipe(output, list.toArray(), json.get("width").getAsInt(), json.get("height").getAsInt());

        recipe.width = json.get("width").getAsInt();
        recipe.height = json.get("height").getAsInt();
        
        if (json.has("modid")) {
        	recipe.setModid(json.get("modid").getAsString());
        }
        

        return recipe;

    }

}