package com.vincent.rsf.common.utils;

import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;
import com.google.gson.reflect.TypeToken;

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

public class GsonUtils {

    // include cache
    private static final Gson gson = new Gson();

    public static String toJson(Object object) {
        return gson.toJson(object);
    }

    public static <T> T fromJson(String json, Class<T> clazz) throws JsonSyntaxException {
        return gson.fromJson(json, clazz);
    }

    public static <T> T fromJson(String json, Type typeOfT) throws JsonSyntaxException {
        return gson.fromJson(json, typeOfT);
    }

    public static <T> List<T> fromJsonToList(String json, Class<T> clazz) throws JsonSyntaxException {
        Type type = TypeToken.getParameterized(List.class, clazz).getType();
        return gson.fromJson(json, type);
    }

    public static <K, V> Map<K, V> fromJsonToMap(String json, Class<K> keyType, Class<V> valueType) throws JsonSyntaxException {
        Type type = TypeToken.getParameterized(Map.class, keyType, valueType).getType();
        return gson.fromJson(json, type);
    }

}