/*
 * Copyright [2013] [Cloud4SOA, www.cloud4soa.eu]
 *
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */


/*
 * Copyright 2009-2012 the original author or authors.
 *
 * 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 org.cloudfoundry.client.lib.util;

import java.io.IOException;
import java.util.Collections;
import java.util.List;

import org.cloudfoundry.client.lib.domain.UploadApplicationPayload;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.http.converter.HttpMessageNotWritableException;
import org.springframework.util.FileCopyUtils;

/**
 * Implementation of {@link HttpMessageConverter} that can write {@link org.cloudfoundry.client.lib.domain.UploadApplicationPayload}s. The {@code Content-Type}
 * of written resources is {@code application/octet-stream}.
 *
 * @author Phillip Webb
 */
public class UploadApplicationPayloadHttpMessageConverter implements HttpMessageConverter<UploadApplicationPayload> {

    public boolean canRead(Class<?> clazz, MediaType mediaType) {
        return false;
    }

    public boolean canWrite(Class<?> clazz, MediaType mediaType) {
        return UploadApplicationPayload.class.isAssignableFrom(clazz);
    }

    public List<MediaType> getSupportedMediaTypes() {
        return Collections.singletonList(MediaType.ALL);
    }

    public UploadApplicationPayload read(Class<? extends UploadApplicationPayload> clazz, HttpInputMessage inputMessage) throws IOException,
        HttpMessageNotReadableException {
        throw new UnsupportedOperationException();
    }

    public void write(UploadApplicationPayload t, MediaType contentType, HttpOutputMessage outputMessage) throws IOException,
        HttpMessageNotWritableException {
        HttpHeaders headers = outputMessage.getHeaders();
        if (contentType == null || contentType.isWildcardType() || contentType.isWildcardSubtype()) {
            contentType = MediaType.APPLICATION_OCTET_STREAM;
        }
        if (contentType != null) {
            headers.setContentType(contentType);
        }
        FileCopyUtils.copy(t.getInputStream(), outputMessage.getBody());
        outputMessage.getBody().flush();
    }

}