/*
 * 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.
 */

#include <decaf/net/URLConnection.h>

#include <decaf/io/IOException.h>
#include <decaf/lang/Integer.h>
#include <decaf/lang/exceptions/NullPointerException.h>
#include <decaf/lang/exceptions/NumberFormatException.h>
#include <decaf/lang/exceptions/UnsupportedOperationException.h>
#include <decaf/lang/exceptions/IllegalStateException.h>

using namespace decaf;
using namespace decaf::net;
using namespace decaf::lang;
using namespace decaf::lang::exceptions;

////////////////////////////////////////////////////////////////////////////////
bool URLConnection::defaultAllowUserInteraction;
bool URLConnection::defaultUseCaches = true;

////////////////////////////////////////////////////////////////////////////////
namespace decaf {
namespace net {

    class URLConnectionImpl {
    public:

        std::string contentType;

//        static bool defaultAllowUserInteraction;
//        static bool defaultUseCaches = true;
//        ContentHandler defaultHandler = new DefaultContentHandler();

        long long lastModified;
        int readTimeout;
        int connectTimeout;

    public:

        URLConnectionImpl() : contentType(),
                              lastModified(-1),
                              readTimeout(0),
                              connectTimeout(0) {}

    };

}}

////////////////////////////////////////////////////////////////////////////////
URLConnection::URLConnection(const URL& url) : impl(new URLConnectionImpl),
                                               url(url),
                                               ifModifiedSince(),
                                               useCaches(),
                                               connected(),
                                               doOutput(),
                                               doInput(true),
                                               allowUserInteraction() {
}

////////////////////////////////////////////////////////////////////////////////
URLConnection::~URLConnection() {
    try {
        delete this->impl;
    }
    DECAF_CATCHALL_NOTHROW()
}

////////////////////////////////////////////////////////////////////////////////
int URLConnection::getConnectTimeout() const {
    return impl->connectTimeout;
}

////////////////////////////////////////////////////////////////////////////////
int URLConnection::getReadTimeout() const {
    return impl->readTimeout;
}

////////////////////////////////////////////////////////////////////////////////
long long URLConnection::getHeaderFieldDate(const std::string& field, long long defaultValue) const {
    std::string date = getHeaderField(field);
    if (date == "") {
        return defaultValue;
    }

    throw UnsupportedOperationException(__FILE__, __LINE__, "Not yet implemented");

    try {
        // TODO
        return -1; // Date::parse(date);
    } catch (Exception& e) {
        return defaultValue;
    }
}

////////////////////////////////////////////////////////////////////////////////
int URLConnection::getHeaderFieldInt(const std::string& field, int defaultValue) const {
    try {
        return Integer::parseInt(getHeaderField(field));
    } catch (NumberFormatException& e) {
        return defaultValue;
    }
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setAllowUserInteraction(bool newValue) {
    if (connected) {
        throw IllegalStateException(__FILE__, __LINE__, "Connection already established");
    }

    allowUserInteraction = newValue;
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setDefaultUseCaches(bool newValue) {
    if (connected) {
        throw IllegalStateException(__FILE__, __LINE__, "Connection already established");
    }
    defaultUseCaches = newValue;
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setDoInput(bool newValue) {
    if (connected) {
        throw IllegalStateException(__FILE__, __LINE__, "Connection already established");
    }
    doInput = newValue;
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setDoOutput(bool newValue) {
    if (connected) {
        throw IllegalStateException(__FILE__, __LINE__, "Connection already established");
    }
    doOutput = newValue;
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setUseCaches(bool newValue) {
    if (connected) {
        throw IllegalStateException(__FILE__, __LINE__, "Connection already established");
    }
    useCaches = newValue;
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setConnectTimeout(int timeout) {
    if (0 > timeout) {
        throw IllegalStateException(__FILE__, __LINE__, "Invalid negative timeout");
    }
    impl->connectTimeout = timeout;
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setReadTimeout(int timeout) {
    if (0 > timeout) {
        throw IllegalStateException(__FILE__, __LINE__, "Invalid negative timeout");
    }
    impl->readTimeout = timeout;
}

////////////////////////////////////////////////////////////////////////////////
long long URLConnection::getLastModified() const {
    if (impl->lastModified != -1) {
        return impl->lastModified;
    }

    return impl->lastModified = getHeaderFieldDate("Last-Modified", 0);
}

////////////////////////////////////////////////////////////////////////////////
void URLConnection::setIfModifiedSince(long long newValue) {
    if (connected) {
        throw IllegalStateException(__FILE__, __LINE__, "Connection already established");
    }
    ifModifiedSince = newValue;
}