/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * 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 tv.twitch.volley.toolbox;

import tv.twitch.volley.NetworkResponse;
import tv.twitch.volley.ParseError;
import tv.twitch.volley.Response;
import tv.twitch.volley.Response.ErrorListener;
import tv.twitch.volley.Response.Listener;
import java.io.UnsupportedEncodingException;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * A request for retrieving a {@link JSONObject} response body at a given URL, allowing for an
 * optional {@link JSONObject} to be passed in as part of the request body.
 */
public class JsonObjectRequest extends JsonRequest<JSONObject> {

    /**
     * Creates a new request.
     *
     * @param method the HTTP method to use
     * @param url URL to fetch the JSON from
     * @param jsonRequest A {@link JSONObject} to post with the request. Null is allowed and
     *     indicates no parameters will be posted along with request.
     * @param listener Listener to receive the JSON response
     * @param errorListener Error listener, or null to ignore errors.
     */
    public JsonObjectRequest(
            int method,
            String url,
            JSONObject jsonRequest,
            Listener<JSONObject> listener,
            ErrorListener errorListener) {
        super(
                method,
                url,
                (jsonRequest == null) ? null : jsonRequest.toString(),
                listener,
                errorListener);
    }

    /**
     * Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is <code>null
     * </code> , <code>POST</code> otherwise.
     *
     * @see #JsonObjectRequest(int, String, JSONObject, Listener, ErrorListener)
     */
    public JsonObjectRequest(
            String url,
            JSONObject jsonRequest,
            Listener<JSONObject> listener,
            ErrorListener errorListener) {
        this(
                jsonRequest == null ? Method.GET : Method.POST,
                url,
                jsonRequest,
                listener,
                errorListener);
    }

    @Override
    protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
        try {
            String jsonString =
                    new String(
                            response.data,
                            HttpHeaderParser.parseCharset(response.headers, PROTOCOL_CHARSET));
            return Response.success(
                    new JSONObject(jsonString), HttpHeaderParser.parseCacheHeaders(response));
        } catch (UnsupportedEncodingException e) {
            return Response.error(new ParseError(e));
        } catch (JSONException je) {
            return Response.error(new ParseError(je));
        }
    }
}
