/*
 * Copyright (C) 2015 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.liskovsoft.googlecommon.common.converters.gson;

import com.google.gson.Gson;
import com.google.gson.TypeAdapter;

import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

import okhttp3.MediaType;
import okhttp3.RequestBody;
import retrofit2.Converter;

final class GsonRequestBodyConverter<T> implements Converter<T, RequestBody> {
    private static final MediaType MEDIA_TYPE = MediaType.get("application/json; charset=UTF-8");
    private static final Charset UTF_8 = StandardCharsets.UTF_8;

    private final Gson gson;
    private final TypeAdapter<T> adapter;

    GsonRequestBodyConverter(Gson gson, TypeAdapter<T> adapter) {
        this.gson = gson;
        this.adapter = adapter;
    }

    @Override
    public RequestBody convert(T value) throws IOException {
        //Buffer buffer = new Buffer();
        //Writer writer = new OutputStreamWriter(buffer.outputStream(), UTF_8);
        //JsonWriter jsonWriter = gson.newJsonWriter(writer);
        //adapter.write(jsonWriter, value);
        //jsonWriter.close();
        //return RequestBody.create(MEDIA_TYPE, buffer.readByteString());

        // Accept raw json body
        return RequestBody.create(MEDIA_TYPE, value.toString());
    }
}
