/*
 * SPDX-License-Identifier: GPL-3.0-or-later
 * SPDX-FileCopyrightText: 2020 Johan Ouwerkerk <jm.ouwerkerk@gmail.com>
 */

#include "datetimevalidator.h"
#include "util.h"

namespace validators
{
std::optional<QDateTime> parseDateTime(const QString &input)
{
    QDateTime result;

    result = QDateTime::fromString(input, Qt::ISODateWithMs);
    if (result.isValid()) {
        return std::optional<QDateTime>(result);
    }

    result = QDateTime::fromString(input, Qt::ISODate);
    if (result.isValid()) {
        return std::optional<QDateTime>(result);
    }

    return std::nullopt;
}

EpochValidator::EpochValidator(const std::function<qint64(void)> clock, QObject *parent)
    : QValidator(parent)
    , m_clock(clock)
{
}

void EpochValidator::fixup(QString &input) const
{
    input = validators::simplify_spaces(input);
}

QValidator::State EpochValidator::validate(QString &input, int &pos) const
{
    Q_UNUSED(pos);

    const auto parsed = parseDateTime(input);
    if (!parsed) {
        return QValidator::Intermediate;
    }

    return parsed->toMSecsSinceEpoch() <= m_clock() ? QValidator::Acceptable : QValidator::Invalid;
}
}

#include "moc_datetimevalidator.cpp"