/*
 * Copyright (C) Contributors to the Suwayomi project
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

import { ReaderResumeMode } from '@/modules/reader/types/Reader.types.ts';

export const getInitialReaderPageIndex = (
    resumeMode: ReaderResumeMode,
    lastReadPageIndex: number,
    lastPageIndex: number,
): number => {
    if (resumeMode === ReaderResumeMode.START) {
        return 0;
    }

    if (resumeMode === ReaderResumeMode.END) {
        return lastPageIndex;
    }

    return Math.max(0, Math.min(lastPageIndex, lastReadPageIndex));
};