<?php
/**
 * Utilities' tests
 */

require_once 'application/Utils.php';
require_once 'application/Languages.php';


/**
 * Unitary tests for Shaarli utilities
 */
class UtilsTest extends \Shaarli\TestCase
{
    // Log file
    protected static $testLogFile = 'tests.log';

    // Expected log date format
    protected static $dateFormat = 'Y/m/d H:i:s';

    /**
     * @var string Save the current timezone.
     */
    protected static $defaultTimeZone;

    /**
     * Assign reference data
     */
    public static function setUpBeforeClass(): void
    {
        self::$defaultTimeZone = date_default_timezone_get();
        // Timezone without DST for test consistency
        date_default_timezone_set('Africa/Nairobi');
    }

    /**
     * Reset the timezone
     */
    public static function tearDownAfterClass(): void
    {
        date_default_timezone_set(self::$defaultTimeZone);
    }

    /**
     * Resets test data before each test
     */
    protected function setUp(): void
    {
        if (file_exists(self::$testLogFile)) {
            unlink(self::$testLogFile);
        }
    }

    /**
     * Returns a list of the elements from the last logged entry
     *
     * @return list (date, ip address, message)
     */
    protected function getLastLogEntry()
    {
        $logFile = file(self::$testLogFile);
        return explode(' - ', trim(array_pop($logFile), PHP_EOL));
    }

    /**
     * Format a log a message - IPv4 client address
     */
    public function testFormatLogIp4()
    {
        $message = 'IPv4 client connected';
        $log = format_log($message, '127.0.0.1');

        static::assertSame('- 127.0.0.1 - IPv4 client connected', $log);
    }

    /**
     * Format a log a message - IPv6 client address
     */
    public function testFormatLogIp6()
    {
        $message = 'IPv6 client connected';
        $log = format_log($message, '2001:db8::ff00:42:8329');

        static::assertSame('- 2001:db8::ff00:42:8329 - IPv6 client connected', $log);
    }

    /**
     * Represent a link by its hash
     */
    public function testSmallHash()
    {
        $this->assertEquals('CyAAJw', smallHash('http://test.io'));
        $this->assertEquals(6, strlen(smallHash('https://github.com')));
    }

    /**
     * Look for a substring at the beginning of a string
     */
    public function testStartsWithCaseInsensitive()
    {
        $this->assertTrue(startsWith('Lorem ipsum', 'lorem', false));
        $this->assertTrue(startsWith('Lorem ipsum', 'LoReM i', false));
    }

    /**
     * Look for a substring at the beginning of a string (case-sensitive)
     */
    public function testStartsWithCaseSensitive()
    {
        $this->assertTrue(startsWith('Lorem ipsum', 'Lorem', true));
        $this->assertFalse(startsWith('Lorem ipsum', 'lorem', true));
        $this->assertFalse(startsWith('Lorem ipsum', 'LoReM i', true));
    }

    /**
     * Look for a substring at the beginning of a string (Unicode)
     */
    public function testStartsWithSpecialChars()
    {
        $this->assertTrue(startsWith('å!ùµ', 'å!', false));
        $this->assertTrue(startsWith('µ$åù', 'µ$', true));
    }

    /**
     * Look for a substring at the end of a string
     */
    public function testEndsWithCaseInsensitive()
    {
        $this->assertTrue(endsWith('Lorem ipsum', 'ipsum', false));
        $this->assertTrue(endsWith('Lorem ipsum', 'm IpsUM', false));
    }

    /**
     * Look for a substring at the end of a string (case-sensitive)
     */
    public function testEndsWithCaseSensitive()
    {
        $this->assertTrue(endsWith('lorem Ipsum', 'Ipsum', true));
        $this->assertFalse(endsWith('lorem Ipsum', 'ipsum', true));
        $this->assertFalse(endsWith('lorem Ipsum', 'M IPsuM', true));
    }

    /**
     * Look for a substring at the end of a string (Unicode)
     */
    public function testEndsWithSpecialChars()
    {
        $this->assertTrue(endsWith('å!ùµ', 'ùµ', false));
        $this->assertTrue(endsWith('µ$åù', 'åù', true));
    }

    /**
     * Check valid date strings, according to a DateTime format
     */
    public function testCheckValidDateFormat()
    {
        $this->assertTrue(checkDateFormat('Ymd', '20150627'));
        $this->assertTrue(checkDateFormat('Y-m-d', '2015-06-27'));
    }

    /**
     * Check erroneous date strings, according to a DateTime format
     */
    public function testCheckInvalidDateFormat()
    {
        $this->assertFalse(checkDateFormat('Ymd', '2015'));
        $this->assertFalse(checkDateFormat('Y-m-d', '2015-06'));
        $this->assertFalse(checkDateFormat('Ymd', 'DeLorean'));
    }

    /**
     * Test generate location with valid data.
     */
    public function testGenerateLocation()
    {
        $ref = 'http://localhost/?test';
        $this->assertEquals($ref, generateLocation($ref, 'localhost'));
        $ref = 'http://localhost:8080/?test';
        $this->assertEquals($ref, generateLocation($ref, 'localhost:8080'));
        $ref = '?localreferer#hash';
        $this->assertEquals($ref, generateLocation($ref, 'localhost:8080'));
    }

    /**
     * Test generate location - anti loop.
     */
    public function testGenerateLocationLoop()
    {
        $ref = 'http://localhost/?test';
        $this->assertEquals('./?', generateLocation($ref, 'localhost', array('test')));
    }

    /**
     * Test generate location - from other domain.
     */
    public function testGenerateLocationOut()
    {
        $ref = 'http://somewebsite.com/?test';
        $this->assertEquals('./?', generateLocation($ref, 'localhost'));
    }


    /**
     * Test generateSecretApi.
     */
    public function testGenerateSecretApi()
    {
        $this->assertEquals(12, strlen(generate_api_secret('foo', 'bar')));
    }

    /**
     * Test generateSecretApi with invalid parameters.
     */
    public function testGenerateSecretApiInvalid()
    {
        $this->assertFalse(generate_api_secret('', ''));
        $this->assertFalse(generate_api_secret(false, false));
    }

    /**
     * Test normalize_spaces.
     */
    public function testNormalizeSpace()
    {
        $str = ' foo   bar is   important ';
        $this->assertEquals('foo bar is important', normalize_spaces($str));
        $this->assertEquals('foo', normalize_spaces('foo'));
        $this->assertEquals('', normalize_spaces(''));
        $this->assertEquals(null, normalize_spaces(null));
    }

    /**
     * Test arrays_combine
     */
    public function testCartesianProductGenerator()
    {
        $arr = [['ab', 'cd'], ['ef', 'gh'], ['ij', 'kl'], ['m']];
        $expected = [
            ['ab', 'ef', 'ij', 'm'],
            ['ab', 'ef', 'kl', 'm'],
            ['ab', 'gh', 'ij', 'm'],
            ['ab', 'gh', 'kl', 'm'],
            ['cd', 'ef', 'ij', 'm'],
            ['cd', 'ef', 'kl', 'm'],
            ['cd', 'gh', 'ij', 'm'],
            ['cd', 'gh', 'kl', 'm'],
        ];
        $this->assertEquals($expected, iterator_to_array(cartesian_product_generator($arr)));
    }

    /**
     * Test date_format() with invalid parameter.
     */
    public function testDateFormatInvalid()
    {
        $this->assertFalse(format_date([]));
        $this->assertFalse(format_date(null));
    }

    /**
     * Test is_integer_mixed with valid values
     */
    public function testIsIntegerMixedValid()
    {
        $this->assertTrue(is_integer_mixed(12));
        $this->assertTrue(is_integer_mixed('12'));
        $this->assertTrue(is_integer_mixed(-12));
        $this->assertTrue(is_integer_mixed('-12'));
        $this->assertTrue(is_integer_mixed(0));
        $this->assertTrue(is_integer_mixed('0'));
        $this->assertTrue(is_integer_mixed(0x0a));
    }

    /**
     * Test is_integer_mixed with invalid values
     */
    public function testIsIntegerMixedInvalid()
    {
        $this->assertFalse(is_integer_mixed(true));
        $this->assertFalse(is_integer_mixed(false));
        $this->assertFalse(is_integer_mixed([]));
        $this->assertFalse(is_integer_mixed(['test']));
        $this->assertFalse(is_integer_mixed([12]));
        $this->assertFalse(is_integer_mixed(new DateTime()));
        $this->assertFalse(is_integer_mixed('0x0a'));
        $this->assertFalse(is_integer_mixed('12k'));
        $this->assertFalse(is_integer_mixed('k12'));
        $this->assertFalse(is_integer_mixed(''));
    }

    /**
     * Test return_bytes
     */
    public function testReturnBytes()
    {
        $this->assertEquals(2 * 1024, return_bytes('2k'));
        $this->assertEquals(2 * 1024, return_bytes('2K'));
        $this->assertEquals(2 * (pow(1024, 2)), return_bytes('2m'));
        $this->assertEquals(2 * (pow(1024, 2)), return_bytes('2M'));
        $this->assertEquals(2 * (pow(1024, 3)), return_bytes('2g'));
        $this->assertEquals(2 * (pow(1024, 3)), return_bytes('2G'));
        $this->assertEquals(374, return_bytes('374'));
        $this->assertEquals(374, return_bytes(374));
        $this->assertEquals(0, return_bytes('0'));
        $this->assertEquals(0, return_bytes(0));
        $this->assertEquals(-1, return_bytes('-1'));
        $this->assertEquals(-1, return_bytes(-1));
        $this->assertEquals('', return_bytes(''));
    }

    /**
     * Test human_bytes
     */
    public function testHumanBytes()
    {
        $this->assertEquals('2'. t('kiB'), human_bytes(2 * 1024));
        $this->assertEquals('2'. t('kiB'), human_bytes(strval(2 * 1024)));
        $this->assertEquals('2'. t('MiB'), human_bytes(2 * (pow(1024, 2))));
        $this->assertEquals('2'. t('MiB'), human_bytes(strval(2 * (pow(1024, 2)))));
        $this->assertEquals('2'. t('GiB'), human_bytes(2 * (pow(1024, 3))));
        $this->assertEquals('2'. t('GiB'), human_bytes(strval(2 * (pow(1024, 3)))));
        $this->assertEquals('374'. t('B'), human_bytes(374));
        $this->assertEquals('374'. t('B'), human_bytes('374'));
        $this->assertEquals('232'. t('kiB'), human_bytes(237481));
        $this->assertEquals(t('Unlimited'), human_bytes('0'));
        $this->assertEquals(t('Unlimited'), human_bytes(0));
        $this->assertEquals(t('Setting not set'), human_bytes(''));
    }

    /**
     * Test get_max_upload_size with formatting
     */
    public function testGetMaxUploadSize()
    {
        $this->assertEquals('1'. t('MiB'), get_max_upload_size(2097152, '1024k'));
        $this->assertEquals('1'. t('MiB'), get_max_upload_size('1m', '2m'));
        $this->assertEquals('100'. t('B'), get_max_upload_size(100, 100));
    }

    /**
     * Test get_max_upload_size without formatting
     */
    public function testGetMaxUploadSizeRaw()
    {
        $this->assertEquals('1048576', get_max_upload_size(2097152, '1024k', false));
        $this->assertEquals('1048576', get_max_upload_size('1m', '2m', false));
        $this->assertEquals('100', get_max_upload_size(100, 100, false));
    }

    /**
     * Test alphabetical_sort by value, not reversed, with php-intl.
     */
    public function testAlphabeticalSortByValue()
    {
        $arr = [
            'zZz',
            'éee',
            'éae',
            'eee',
            'A',
            'a',
            'zzz',
        ];
        $expected = [
            'a',
            'A',
            'éae',
            'eee',
            'éee',
            'zzz',
            'zZz',
        ];

        alphabetical_sort($arr);
        $this->assertEquals($expected, $arr);
    }

    /**
     * Test alphabetical_sort by value, reversed, with php-intl.
     */
    public function testAlphabeticalSortByValueReversed()
    {
        $arr = [
            'zZz',
            'éee',
            'éae',
            'eee',
            'A',
            'a',
            'zzz',
        ];
        $expected = [
            'zZz',
            'zzz',
            'éee',
            'eee',
            'éae',
            'A',
            'a',
        ];

        alphabetical_sort($arr, true);
        $this->assertEquals($expected, $arr);
    }

    /**
     * Test alphabetical_sort by keys, not reversed, with php-intl.
     */
    public function testAlphabeticalSortByKeys()
    {
        $arr = [
            'zZz' => true,
            'éee' => true,
            'éae' => true,
            'eee' => true,
            'A' => true,
            'a' => true,
            'zzz' => true,
        ];
        $expected = [
            'a' => true,
            'A' => true,
            'éae' => true,
            'eee' => true,
            'éee' => true,
            'zzz' => true,
            'zZz' => true,
        ];

        alphabetical_sort($arr, true, true);
        $this->assertEquals($expected, $arr);
    }

    /**
     * Test alphabetical_sort by keys, reversed, with php-intl.
     */
    public function testAlphabeticalSortByKeysReversed()
    {
        $arr = [
            'zZz' => true,
            'éee' => true,
            'éae' => true,
            'eee' => true,
            'A' => true,
            'a' => true,
            'zzz' => true,
        ];
        $expected = [
            'zZz' => true,
            'zzz' => true,
            'éee' => true,
            'eee' => true,
            'éae' => true,
            'A' => true,
            'a' => true,
        ];

        alphabetical_sort($arr, true, true);
        $this->assertEquals($expected, $arr);
    }
}