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/*
 * Copyright (c) 2010-2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swift/Controllers/ContactEditController.h>

#include <memory>

#include <boost/algorithm/string.hpp>
#include <boost/bind.hpp>

#include <Swiften/VCards/VCardManager.h>

#include <Swift/Controllers/Roster/RosterController.h>
#include <Swift/Controllers/UIEvents/RemoveRosterItemUIEvent.h>
#include <Swift/Controllers/UIEvents/RequestContactEditorUIEvent.h>
#include <Swift/Controllers/UIEvents/UIEventStream.h>
#include <Swift/Controllers/UIInterfaces/ContactEditWindowFactory.h>

namespace Swift {

ContactEditController::ContactEditController(RosterController* rosterController, VCardManager* vcardManager, ContactEditWindowFactory* contactEditWindowFactory, UIEventStream* uiEventStream) : rosterController(rosterController), vcardManager(vcardManager), contactEditWindowFactory(contactEditWindowFactory), uiEventStream(uiEventStream), contactEditWindow(nullptr) {
    uiEventStream->onUIEvent.connect(boost::bind(&ContactEditController::handleUIEvent, this, _1));
    vcardManager->onVCardChanged.connect(boost::bind(&ContactEditController::handleVCardChanged, this, _1, _2));
}

ContactEditController::~ContactEditController() {
    if (contactEditWindow) {
        contactEditWindow->onChangeContactRequest.disconnect(boost::bind(&ContactEditController::handleChangeContactRequest, this, _1, _2));
        contactEditWindow->onRemoveContactRequest.disconnect(boost::bind(&ContactEditController::handleRemoveContactRequest, this));
        delete contactEditWindow;
    }
    uiEventStream->onUIEvent.disconnect(boost::bind(&ContactEditController::handleUIEvent, this, _1));
}

void ContactEditController::handleUIEvent(UIEvent::ref event) {
    RequestContactEditorUIEvent::ref editEvent = std::dynamic_pointer_cast<RequestContactEditorUIEvent>(event);
    if (!editEvent) {
        return;
    }

    if (!contactEditWindow) {
        contactEditWindow = contactEditWindowFactory->createContactEditWindow();
        contactEditWindow->onRemoveContactRequest.connect(boost::bind(&ContactEditController::handleRemoveContactRequest, this));
        contactEditWindow->onChangeContactRequest.connect(boost::bind(&ContactEditController::handleChangeContactRequest, this, _1, _2));
    }
    currentContact = rosterController->getItem(editEvent->getJID());
    assert(currentContact);
    jid = rosterController->getItem(editEvent->getJID())->getJID();
    contactEditWindow->setContact(jid, currentContact->getName(), currentContact->getGroups(), rosterController->getGroups());
    contactEditWindow->show();

    if (vcardManager) {
        VCard::ref vcard = vcardManager->getVCardAndRequestWhenNeeded(jid);
        if (vcard) {
            handleVCardChanged(jid, vcard);
        }
    }
}

void ContactEditController::handleVCardChanged(const JID &jid, VCard::ref vcard) {
    if (jid == this->jid) {
        contactEditWindow->setNameSuggestions(nameSuggestionsFromVCard(vcard));
    }
}

void ContactEditController::setAvailable(bool b) {
    if (contactEditWindow) {
        contactEditWindow->setEnabled(b);
    }
}

std::vector<std::string> ContactEditController::nameSuggestionsFromVCard(VCard::ref vcard) {
    std::vector<std::string> suggestions;
    if (!vcard->getNickname().empty()) {
        suggestions.push_back(vcard->getNickname());
    }
    if (!vcard->getFullName().empty()) {
        suggestions.push_back(vcard->getFullName());
    }
    if (!vcard->getGivenName().empty()) {
        std::string suggestedName;
        suggestedName = vcard->getGivenName();
        boost::algorithm::trim(suggestedName);
        suggestions.push_back(suggestedName);
    }
    return suggestions;
}

void ContactEditController::handleRemoveContactRequest() {
    assert(currentContact);
    uiEventStream->send(std::make_shared<RemoveRosterItemUIEvent>(currentContact->getJID()));
    contactEditWindow->hide();
}

void ContactEditController::handleChangeContactRequest(const std::string& name, const std::set<std::string>& newGroups) {
    std::vector<std::string> oldGroupsVector = currentContact->getGroups();
    std::set<std::string> oldGroups(oldGroupsVector.begin(), oldGroupsVector.end());
    if (oldGroups != newGroups || currentContact->getName() != name) {
        XMPPRosterItem newContact(*currentContact);
        newContact.setName(name);
        newContact.setGroups(std::vector<std::string>(newGroups.begin(), newGroups.end()));
        rosterController->updateItem(newContact);
    }
    contactEditWindow->hide();
}

}