package com.xiaomi.data.push.uds.codes.gson;

import com.google.gson.TypeAdapter;
import com.google.gson.internal.LinkedTreeMap;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonToken;
import com.google.gson.stream.JsonWriter;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * @author zhangping17
 */
public class ObjectTypeAdapterRewrite extends TypeAdapter<Object> {

    @Override
    public Object read(JsonReader in) throws IOException {
        JsonToken token = in.peek();
        //判断字符串的实际类型
        switch (token) {
            case BEGIN_ARRAY:
                List<Object> list = new ArrayList<>();
                in.beginArray();
                while (in.hasNext()) {
                    list.add(read(in));
                }
                in.endArray();
                return list;

            case BEGIN_OBJECT:
                Map<String, Object> map = new LinkedTreeMap<>();
                in.beginObject();
                while (in.hasNext()) {
                    map.put(in.nextName(), read(in));
                }
                in.endObject();
                return map;
            case STRING:
                return in.nextString();
            case NUMBER:
                String s = in.nextString();
                if (s.contains(".")) {
                    return Double.valueOf(s);
                } else {
                    try {
                        return Integer.valueOf(s);
                    } catch (Exception e) {
                        return Long.valueOf(s);
                    }
                }
            case BOOLEAN:
                return in.nextBoolean();
            case NULL:
                in.nextNull();
                return null;
            default:
                throw new IllegalStateException();
        }
    }

    @Override
    public void write(JsonWriter out, Object value) throws IOException {

    }
}
