/*
 * Copyright (C) 2001-2012 Jacek Sieka, arnetheduck on gmail point com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "stdinc.h"

#include "Transfer.h"

#include "UserConnection.h"
#include "ClientManager.h"
#include "format.h"

namespace dcpp {

const string Transfer::names[] = {
    "file", "file", "list", "tthl"
};

const string Transfer::USER_LIST_NAME = "files.xml";
const string Transfer::USER_LIST_NAME_BZ = "files.xml.bz2";

Transfer::Transfer(UserConnection& conn, const string& path_, const TTHValue& tth_) : segment(0, -1), type(TYPE_FILE), start(0),
    path(path_), tth(tth_), actual(0), pos(0), userConnection(conn) { }

void Transfer::tick() {
    Lock l(cs);

    uint64_t t = GET_TICK();

    if(samples.size() >= 1) {
        int64_t tdiff = samples.back().first - samples.front().first;
        if((tdiff / 1000) > MIN_SECS) {
            while(samples.size() >= MIN_SAMPLES) {
                samples.pop_front();
            }
        }

    }

    if(samples.size() > 1) {
        if(samples.back().second == pos) {
            // Position hasn't changed, just update the time
            samples.back().first = t;
            return;
        }
    }

    samples.emplace_back(t, pos);
}

double Transfer::getAverageSpeed() const {
    Lock l(cs);
    if(samples.size() < 2) {
        return 0;
    }
    uint64_t ticks = samples.back().first - samples.front().first;
    int64_t bytes = samples.back().second - samples.front().second;

    return ticks > 0 ? (static_cast<double>(bytes) / ticks) * 1000.0 : 0;
}

void Transfer::getParams(const UserConnection& aSource, ParamMap& params) {
    params["userCID"] = aSource.getUser()->getCID().toBase32();
    params["userNI"] = Util::toString(ClientManager::getInstance()->getNicks(aSource.getUser()->getCID(), aSource.getHubUrl()));
    params["userI4"] = aSource.getRemoteIp();
    StringList hubNames = ClientManager::getInstance()->getHubNames(aSource.getUser()->getCID(), aSource.getHubUrl());
    if(hubNames.empty())
        hubNames.push_back(_("Offline"));
    params["hub"] = Util::toString(hubNames);
    StringList hubs = ClientManager::getInstance()->getHubs(aSource.getUser()->getCID(), aSource.getHubUrl());
    if(hubs.empty())
        hubs.push_back(_("Offline"));
    params["hubURL"] = Util::toString(hubs);
    params["fileSI"] = Util::toString(getSize());
    params["fileSIshort"] = Util::formatBytes(getSize());
    params["fileSIactual"] = Util::toString(getActual());
    params["fileSIactualshort"] = Util::formatBytes(getActual());
    params["speed"] = str(F_("%1%/s") % Util::formatBytes(getAverageSpeed()));
    params["time"] = Util::formatSeconds((GET_TICK() - getStart()) / 1000);
    params["fileTR"] = getTTH().toBase32();
}

UserPtr Transfer::getUser() {
    return getUserConnection().getUser();
}

const UserPtr Transfer::getUser() const {
    return getUserConnection().getUser();
}

HintedUser Transfer::getHintedUser() const {
    return getUserConnection().getHintedUser();
}

} // namespace dcpp
