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Communication library for Android and Java
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/*
 * Copyright (C) 2015 AppTik 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 io.apptik.comm.jus.converter;


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

import io.apptik.comm.jus.Converter;
import io.apptik.comm.jus.NetworkRequest;
import io.apptik.comm.jus.NetworkResponse;
import io.apptik.comm.jus.http.HTTP;
import io.apptik.comm.jus.http.MediaType;

public class Converters {

    public static final class NetworkResponseConverter implements Converter {
        @Override
        public NetworkResponse convert(NetworkResponse value) throws IOException {
            return value;
        }
    }

    public static final class NetworkRequestConverter implements Converter {
        @Override
        public NetworkRequest convert(NetworkRequest value) throws IOException {
            return value;
        }
    }

    public static final class StringResponseConverter implements Converter {
        @Override
        public String convert(NetworkResponse value) throws IOException {
            String parsed;
            if (value.data == null) {
                return null;
            }
            try {
                Charset charset = Charset.forName(HTTP.UTF_8);
                if (value.headers.get(HTTP.CONTENT_TYPE) != null) {
                    charset = MediaType.parse(value.headers.get(HTTP.CONTENT_TYPE)).charset
                            (charset);
                }
                parsed = new String(value.data, charset);
            } catch (Exception e) {
                parsed = new String(value.data);
            }
            return parsed;
        }
    }

    public static final class StringRequestConverter implements Converter {

        private static final MediaType MEDIA_TYPE = MediaType.parse("text/plain; charset=UTF-8");
        private final MediaType mediaType;

        public StringRequestConverter() {
            this.mediaType = MEDIA_TYPE;
        }

        public StringRequestConverter(String mediaType) {
            this.mediaType = MediaType.parse(mediaType);
        }

        public StringRequestConverter(MediaType mediaType) {
            this.mediaType = mediaType;
        }

        @Override
        public NetworkRequest convert(String value) throws IOException {
            Charset charset = Charset.forName(HTTP.UTF_8);
            charset = mediaType.charset(charset);
            return new NetworkRequest.Builder()
                    .setContentType(mediaType)
                    .setBody(value.getBytes(charset))
                    .build();
        }
    }
}