<?php

declare(strict_types=1);

/*
 * Copyright (C) Ascensio System SIA, 2009-2026
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation, together with the
 * additional terms provided in the LICENSE file.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
 * details, see the GNU AGPL at: https://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA by email at info@onlyoffice.com
 * or by postal mail at 20A-6 Ernesta Birznieka-Upisha Street, Riga,
 * LV-1050, Latvia, European Union.
 *
 * The interactive user interfaces in modified versions of the Program
 * are required to display Appropriate Legal Notices in accordance with
 * Section 5 of the GNU AGPL version 3.
 *
 * No trademark rights are granted under this License.
 *
 * All non-code elements of the Product, including illustrations,
 * icon sets, and technical writing content, are licensed under the
 * Creative Commons Attribution-ShareAlike 4.0 International License:
 * https://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 * This license applies only to such non-code elements and does not
 * modify or replace the licensing terms applicable to the Program's
 * source code, which remains licensed under the GNU Affero General
 * Public License v3.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

namespace OCA\Onlyoffice\Tests\PHP;

use OCA\Onlyoffice\FileVersions;
use PHPUnit\Framework\Attributes\CoversClass;
use Test\TestCase;

#[CoversClass(FileVersions::class)]
class FileVersionsTest extends TestCase {

    /**
     * Rejects an empty string without attempting regex parsing.
     */
    public function testSplitPathVersionReturnsFalseForEmptyString(): void {
        $this->assertFalse(FileVersions::splitPathVersion(""));
    }

    /**
     * Returns false for a plain file path that has no version suffix.
     */
    public function testSplitPathVersionReturnsFalseWhenNoVersionSuffix(): void {
        $this->assertFalse(FileVersions::splitPathVersion("/files/document.docx"));
    }

    /**
     * Returns false when the version suffix is non-numeric, as the version identifier must be a timestamp.
     */
    public function testSplitPathVersionReturnsFalseForNonNumericVersion(): void {
        $this->assertFalse(FileVersions::splitPathVersion("/files/document.docx.vabc"));
    }

    /**
     * Splits a correctly suffixed path into the base file path and the numeric version identifier.
     */
    public function testSplitPathVersionReturnsPathAndVersionForValidInput(): void {
        $result = FileVersions::splitPathVersion("/files/document.docx.v1234567890");

        $this->assertIsArray($result);
        $this->assertSame("/files/document.docx", $result[0]);
        $this->assertSame("1234567890", $result[1]);
    }

    /**
     * Handles nested directory paths, returning the full path up to the version suffix as the file component.
     */
    public function testSplitPathVersionHandlesNestedPath(): void {
        $result = FileVersions::splitPathVersion("/users/alice/files/report.xlsx.v1234567890");

        $this->assertIsArray($result);
        $this->assertSame("/users/alice/files/report.xlsx", $result[0]);
        $this->assertSame("1234567890", $result[1]);
    }

    /**
     * Parses filenames containing multiple dots correctly, treating only the trailing .v{digits} as the version.
     */
    public function testSplitPathVersionHandlesFilenameWithMultipleDots(): void {
        $result = FileVersions::splitPathVersion("/files/report.final.v2.docx.v1234567890");

        $this->assertIsArray($result);
        $this->assertSame("/files/report.final.v2.docx", $result[0]);
        $this->assertSame("1234567890", $result[1]);
    }
}