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/*
 * Copyright (c) 2011 Tobias Markmann
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

/*
 * Copyright (c) 2015 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include "FileTransferOverview.h"

#include <boost/bind.hpp>
#include <boost/filesystem.hpp>

#include <Swiften/Base/Log.h>
#include <Swiften/Base/boost_bsignals.h>
#include <Swiften/Base/foreach.h>
#include <Swiften/FileTransfer/FileTransferManager.h>

namespace Swift {

FileTransferOverview::FileTransferOverview(FileTransferManager* ftm) : fileTransferManager(ftm) {
	fileTransferManager->onIncomingFileTransfer.connect(boost::bind(&FileTransferOverview::handleIncomingFileTransfer, this, _1));
	onNewFileTransferController.connect(boost::bind(&FileTransferOverview::handleNewFileTransferController, this, _1));
}

FileTransferOverview::~FileTransferOverview() {
	onNewFileTransferController.disconnect(boost::bind(&FileTransferOverview::handleNewFileTransferController, this, _1));
	fileTransferManager->onIncomingFileTransfer.disconnect(boost::bind(&FileTransferOverview::handleIncomingFileTransfer, this, _1));
	foreach(FileTransferController* controller, fileTransfers) {
		controller->onStateChanged.disconnect(boost::bind(&FileTransferOverview::handleFileTransferStateChanged, this));
	}
}
	
void FileTransferOverview::sendFile(const JID& jid, const std::string& filename) {
	if (boost::filesystem::exists(filename) && boost::filesystem::file_size(filename) > 0) {
		FileTransferController* controller = new FileTransferController(jid, filename, fileTransferManager);
		onNewFileTransferController(controller);
	}
}

void FileTransferOverview::handleIncomingFileTransfer(IncomingFileTransfer::ref transfer) {
	FileTransferController* controller = new FileTransferController(transfer);
	onNewFileTransferController(controller);
}

void FileTransferOverview::handleNewFileTransferController(FileTransferController* controller) {
	fileTransfers.push_back(controller);
	controller->onStateChanged.connect(boost::bind(&FileTransferOverview::handleFileTransferStateChanged, this));
}

void FileTransferOverview::handleFileTransferStateChanged() {
	onFileTransferListChanged();
}

const std::vector<FileTransferController*>& FileTransferOverview::getFileTransfers() const {
	return fileTransfers;
}

void FileTransferOverview::clearFinished() {
	for (std::vector<FileTransferController*>::iterator it = fileTransfers.begin(); it != fileTransfers.end(); ) {
		if((*it)->getState().type == FileTransfer::State::Finished
			|| (*it)->getState().type == FileTransfer::State::Failed
			|| (*it)->getState().type == FileTransfer::State::Canceled) {
			FileTransferController* controller = *it;
			it = fileTransfers.erase(it);
			controller->onStateChanged.disconnect(boost::bind(&FileTransferOverview::handleFileTransferStateChanged, this));
			delete controller;
		} else {
			++it;
		}
	}
	onFileTransferListChanged();
}

bool FileTransferOverview::isClearable() const {
	bool isClearable = false;
	foreach (FileTransferController* controller, fileTransfers) {
		if(controller->getState().type == FileTransfer::State::Finished
			|| controller->getState().type == FileTransfer::State::Failed
			|| controller->getState().type == FileTransfer::State::Canceled) {
			isClearable = true;
			break;
		}
	}
	return isClearable;
}

}