#include "InstanceCreationTask.h"

#include <QDebug>
#include <QFile>
#include "FileSystem.h"

void InstanceCreationTask::executeTask()
{
    setAbortable(true);

    if (updateInstance()) {
        emitSucceeded();
        return;
    }

    // When the user aborted in the update stage.
    if (m_abort) {
        emitAborted();
        return;
    }

    if (!createInstance()) {
        if (m_abort)
            return;

        qWarning() << "Instance creation failed!";
        if (!m_error_message.isEmpty()) {
            qWarning() << "Reason: " << m_error_message;
            emitFailed(tr("Error while creating new instance:\n%1").arg(m_error_message));
        } else {
            emitFailed(tr("Error while creating new instance."));
        }

        return;
    }

    // If this is set, it means we're updating an instance. So, we now need to remove the
    // files scheduled to, and we'd better not let the user abort in the middle of it, since it'd
    // put the instance in an invalid state.
    if (shouldOverride()) {
        bool deleteFailed = false;

        setAbortable(false);
        setStatus(tr("Removing old conflicting files..."));
        qDebug() << "Removing old files";

        for (const QString& path : m_files_to_remove) {
            if (!QFile::exists(path))
                continue;

            qDebug() << "Removing" << path;

            if (!QFile::remove(path)) {
                qCritical() << "Could not remove" << path;
                deleteFailed = true;
            }
        }

        if (deleteFailed) {
            emitFailed(tr("Failed to remove old conflicting files."));
            return;
        }
    }

    emitSucceeded();
}
