/*
 * Retroshare Gxs Feed Item
 *
 * Copyright 2012-2013 by Robert Fernie.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License Version 2.1 as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 *
 * Please report all bugs and problems to "retroshare@lunamutt.com".
 *
 */

#include "gui/gxs/GxsFeedItem.h"
#include "gui/feeds/FeedHolder.h"
#include "gui/gxs/RsGxsUpdateBroadcastBase.h"

#include <iostream>
#include <algorithm>

/**
 * #define DEBUG_ITEM	1
 **/

#define GXSFEEDITEM_GROUPMETA  5
#define GXSFEEDITEM_MESSAGE    6

void GxsFeedItem::removeItem()
{
#ifdef DEBUG_ITEM
	std::cerr << "GxsFeedItem::removeItem()";
	std::cerr << std::endl;
#endif

	if (mFeedHolder)
	{
		mFeedHolder->lockLayout(this, true);
	}

	hide();

	if (mFeedHolder)
	{
		mFeedHolder->lockLayout(this, false);
		mFeedHolder->deleteFeedItem(this, mFeedId);
	}
}

void GxsFeedItem::comments(const QString &title)
{
#ifdef DEBUG_ITEM
	std::cerr << "GxsFeedItem::comments()";
	std::cerr << std::endl;
#endif

	if (mFeedHolder)
	{
		mFeedHolder->openComments(mFeedId, mGroupId, mMessageId, title);
	}
}

void GxsFeedItem::unsubscribe()
{
#ifdef DEBUG_ITEM
	std::cerr << "GxsFeedItem::unsubscribe()";
	std::cerr << std::endl;
#endif

	if (mGxsIface)
	{
		uint32_t token;
		mGxsIface->subscribeToGroup(token, mGroupId, false);
	}
}

void GxsFeedItem::subscribe()
{
#ifdef DEBUG_ITEM
	std::cerr << "GxsFeedItem::subscribe()";
	std::cerr << std::endl;
#endif

	if (mGxsIface)
	{
		uint32_t token;
		mGxsIface->subscribeToGroup(token, mGroupId, true);
	}
}

void GxsFeedItem::copyLink()
{
	if (mGroupId.isNull() || mMessageId.isNull()) {
		return;
	}

	if (getLinkType() == RetroShareLink::TYPE_UNKNOWN) {
		return;
	}

	RetroShareLink link;
	if (link.createGxsMessageLink(getLinkType(), mGroupId, mMessageId, messageName())) {
		QList<RetroShareLink> urls;
		urls.push_back(link);
		RSLinkClipboard::copyLinks(urls);
	}
}

void GxsFeedItem::updateItemStatic()
{
	std::cerr << "GxsFeedItem::updateItemStatic()";
	std::cerr << std::endl;

	requestMessage();
}

void GxsFeedItem::updateItem()
{
	std::cerr << "GxsFeedItem::updateItem() EMPTY";
	std::cerr << std::endl;
}

/***********************************************************/

GxsFeedItem::GxsFeedItem(FeedHolder *feedHolder, uint32_t feedId, const RsGxsGroupId &groupId, const RsGxsMessageId &messageId, bool isHome, RsGxsIfaceHelper *iface, bool loadData, bool autoUpdate) :
	FeedItem(NULL)
{
	std::cerr << "GxsFeedItem::GxsFeedItem()";
	std::cerr << std::endl;

	/* this are just generally useful for all children */
	mFeedHolder = feedHolder;
	mFeedId = feedId;
	mIsHome = isHome;

	/* load data if we can */
	mGroupId = groupId;
	mMessageId = messageId;
	mGxsIface = iface;

	if (loadData && iface)
	{
		mLoadQueue = new TokenQueue(iface->getTokenService(), this);
		requestGroupMeta();
	}
	else
	{
		mLoadQueue = NULL;
	}

	if (mGxsIface && autoUpdate) {
		/* Connect to update broadcast */
		mUpdateBroadcastBase = new RsGxsUpdateBroadcastBase(mGxsIface);
		connect(mUpdateBroadcastBase, SIGNAL(fillDisplay(bool)), this, SLOT(fillDisplay(bool)));
	} else {
		mUpdateBroadcastBase = NULL;
	}
}

GxsFeedItem::~GxsFeedItem()
{
	std::cerr << "GxsFeedItem::~GxsFeedItem()";
	std::cerr << std::endl;

	if (mUpdateBroadcastBase)
	{
		delete(mUpdateBroadcastBase);
	}

	if (mLoadQueue)
	{
		delete mLoadQueue;
	}
}

void GxsFeedItem::fillDisplay(bool /*complete*/)
{
	std::map<RsGxsGroupId, std::vector<RsGxsMessageId> > msgs;
	mUpdateBroadcastBase->getAllMsgIds(msgs);

	if (!msgs.empty())
	{
		std::map<RsGxsGroupId, std::vector<RsGxsMessageId> >::const_iterator mit = msgs.find(groupId());
		if (mit != msgs.end())
		{
			const std::vector<RsGxsMessageId> &msgIds = mit->second;
			if (std::find(msgIds.begin(), msgIds.end(), messageId()) != msgIds.end()) {
				requestMessage();
			}
		}
	}
}

void GxsFeedItem::requestGroupMeta()
{
	std::cerr << "GxsFeedItem::requestGroup()";
	std::cerr << std::endl;

	if (!mLoadQueue)
	{
		return;
	}

	std::list<RsGxsGroupId> ids;
	ids.push_back(mGroupId);

	RsTokReqOptions opts;
	opts.mReqType = GXS_REQUEST_TYPE_GROUP_META;
	uint32_t token;
	mLoadQueue->requestGroupInfo(token, RS_TOKREQ_ANSTYPE_SUMMARY, opts, ids, GXSFEEDITEM_GROUPMETA);

	updateItemStatic();
}

void GxsFeedItem::requestMessage()
{
	std::cerr << "GxsFeedItem::requestMessage()";
	std::cerr << std::endl;

	if (!mLoadQueue)
	{
		if (mGxsIface)
		{
			mLoadQueue = new TokenQueue(mGxsIface->getTokenService(), this);
		} else {
			return;
		}
	}

	RsTokReqOptions opts;
	opts.mReqType = GXS_REQUEST_TYPE_MSG_DATA;

	GxsMsgReq msgIds;
	std::vector<RsGxsMessageId> &vect_msgIds = msgIds[mGroupId];
	vect_msgIds.push_back(mMessageId);

	uint32_t token;
	mLoadQueue->requestMsgInfo(token, RS_TOKREQ_ANSTYPE_DATA, opts, msgIds, GXSFEEDITEM_MESSAGE);
}

void GxsFeedItem::loadGroupMeta(const uint32_t &token)
{
	std::cerr << "GxsFeedItem::loadGroupMeta()";
	std::cerr << std::endl;

	std::list<RsGroupMetaData> groupMeta;

	if (!mGxsIface->getGroupSummary(token, groupMeta))
	{
		std::cerr << "GxsFeedItem::loadGroupMeta() Error getting GroupMeta";
		std::cerr << std::endl;
		return;
	}

	if (groupMeta.size() == 1)
	{
		mGroupMeta = *groupMeta.begin();
	}
	else
	{
		std::cerr << "GxsFeedItem::loadGroupMeta() ERROR Should be ONE GroupMeta";
		std::cerr << std::endl;
	}
}

void GxsFeedItem::loadRequest(const TokenQueue *queue, const TokenRequest &req)
{
	std::cerr << "GxsFeedItem::loadRequest()";
	std::cerr << std::endl;

	if (queue == mLoadQueue)
	{
		switch(req.mUserType)
		{
		case GXSFEEDITEM_GROUPMETA:
			loadGroupMeta(req.mToken);
			break;

		case GXSFEEDITEM_MESSAGE:
			loadMessage(req.mToken);
			break;

		default:
			std::cerr << "GxsFeedItem::loadRequest() ERROR: INVALID TYPE";
			std::cerr << std::endl;
			break;
		}
	}
}