/**
 * UGENE - Integrated Bioinformatics Tools.
 * Copyright (C) 2008-2024 UniPro <ugene@unipro.ru>
 * http://ugene.net
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#include "AddDocumentTask.h"

#include <U2Core/AppContext.h>
#include <U2Core/DocumentProviderTask.h>
#include <U2Core/ProjectModel.h>
#include <U2Core/RemoveDocumentTask.h>
#include <U2Core/U2SafePoints.h>

namespace U2 {

AddDocumentTask::AddDocumentTask(Document* _d, const AddDocumentTaskConfig& _conf)
    : Task("Add document task", TaskFlags_NR_FOSE_COSC), document(_d), dpt(nullptr), conf(_conf) {
    CHECK_EXT(_d != nullptr, setError("Document pointer ]is NULL"), );
    SAFE_POINT(document->isMainThreadObject(), QString("Document added to the project does not belong to the main application thread: %1 !").arg(document->getURLString()), );
    setTaskName(tr("Adding document to project: %1").arg(_d->getURLString()));
    if (AppContext::getProject() == nullptr) {
        addSubTask(AppContext::getProjectLoader()->createNewProjectTask());
    } else {
        setSubtaskProgressWeight(0);
    }
}

AddDocumentTask::AddDocumentTask(DocumentProviderTask* _dpt, const AddDocumentTaskConfig& c)
    : Task("Add document task", TaskFlags_NR_FOSE_COSC), document(nullptr), dpt(_dpt), conf(c) {
    CHECK_EXT(_dpt != nullptr, setError("Document provider task pointer is NULL"), );
    setTaskName(tr("Adding document to project: %1").arg(_dpt->getDocumentDescription()));
    addSubTask(dpt);
}

QList<Task*> AddDocumentTask::onSubTaskFinished(Task* subTask) {
    QList<Task*> res;
    if (propagateSubtaskError()) {
        return res;
    }

    if (subTask == dpt && dpt != nullptr) {
        if (dpt->isCanceled()) {
            return res;
        }
        document = dpt->takeDocument();
        if (AppContext::getProject() == nullptr) {
            res << AppContext::getProjectLoader()->createNewProjectTask();
        } else if (conf.unloadExistingDocument) {
            Document* oldDoc = AppContext::getProject()->findDocumentByURL(document->getURL());
            if (oldDoc != nullptr && oldDoc != document) {
                res << new RemoveMultipleDocumentsTask(AppContext::getProject(), QList<Document*>() << oldDoc, false, false);
            }
        }
    }
    return res;
}

Task::ReportResult AddDocumentTask::report() {
    Project* p = AppContext::getProject();
    if (p == nullptr) {  // no project is opened
        if (!hasError()) {
            setError(tr("No project is opened"));
        }
        return ReportResult_Finished;
    }

    if (p->isStateLocked()) {
        return ReportResult_CallMeAgain;
    } else if (document != nullptr) {
        Document* sameURLDoc = p->findDocumentByURL(document->getURL());
        if (sameURLDoc != nullptr) {
            taskLog.info(tr("Document is already added to the project %1").arg(document->getURL().getURLString()));
        } else {
            p->addDocument(document);
        }
    } else if (!stateInfo.isCanceled()) {
        QString previousError = stateInfo.getError().isEmpty() ? "" : stateInfo.getError() + " ";
        stateInfo.setError(previousError + tr("Document was removed."));
    }
    return ReportResult_Finished;
}

}  // namespace U2
