<?php

namespace Sabre\VObject;

use DateInterval;
use DateTimeImmutable;
use DateTimeZone;
use PHPUnit\Framework\TestCase;

class DateTimeParserTest extends TestCase {

    function testParseICalendarDuration() {

        $this->assertEquals('+1 weeks', DateTimeParser::parseDuration('P1W', true));
        $this->assertEquals('+5 days',  DateTimeParser::parseDuration('P5D', true));
        $this->assertEquals('+5 days 3 hours 50 minutes 12 seconds', DateTimeParser::parseDuration('P5DT3H50M12S', true));
        $this->assertEquals('-1 weeks 50 minutes', DateTimeParser::parseDuration('-P1WT50M', true));
        $this->assertEquals('+50 days 3 hours 2 seconds', DateTimeParser::parseDuration('+P50DT3H2S', true));
        $this->assertEquals('+0 seconds', DateTimeParser::parseDuration('+PT0S', true));
        $this->assertEquals(new DateInterval('PT0S'), DateTimeParser::parseDuration('PT0S'));

    }

    function testParseICalendarDurationDateInterval() {

        $expected = new DateInterval('P7D');
        $this->assertEquals($expected, DateTimeParser::parseDuration('P1W'));
        $this->assertEquals($expected, DateTimeParser::parse('P1W'));

        $expected = new DateInterval('PT3M');
        $expected->invert = true;
        $this->assertEquals($expected, DateTimeParser::parseDuration('-PT3M'));

    }

    /**
     * @expectedException \Sabre\VObject\InvalidDataException
     */
    function testParseICalendarDurationFail() {

        DateTimeParser::parseDuration('P1X', true);

    }

    function testParseICalendarDateTime() {

        $dateTime = DateTimeParser::parseDateTime('20100316T141405');

        $compare = new DateTimeImmutable('2010-03-16 14:14:05', new DateTimeZone('UTC'));

        $this->assertEquals($compare, $dateTime);

    }

    /**
     * @depends testParseICalendarDateTime
     * @expectedException \Sabre\VObject\InvalidDataException
     */
    function testParseICalendarDateTimeBadFormat() {

        $dateTime = DateTimeParser::parseDateTime('20100316T141405 ');

    }

    /**
     * @depends testParseICalendarDateTime
     * @expectedException \Sabre\VObject\InvalidDataException
     */
    function testParseICalendarDateTimeInvalidTime() {

        $dateTime = DateTimeParser::parseDateTime('20100316T251405');

    }

    /**
     * @depends testParseICalendarDateTime
     */
    function testParseICalendarDateTimeUTC() {

        $dateTime = DateTimeParser::parseDateTime('20100316T141405Z');

        $compare = new DateTimeImmutable('2010-03-16 14:14:05', new DateTimeZone('UTC'));
        $this->assertEquals($compare, $dateTime);

    }

    /**
     * @depends testParseICalendarDateTime
     */
    function testParseICalendarDateTimeUTC2() {

        $dateTime = DateTimeParser::parseDateTime('20101211T160000Z');

        $compare = new DateTimeImmutable('2010-12-11 16:00:00', new DateTimeZone('UTC'));
        $this->assertEquals($compare, $dateTime);

    }

    /**
     * @depends testParseICalendarDateTime
     */
    function testParseICalendarDateTimeCustomTimeZone() {

        $dateTime = DateTimeParser::parseDateTime('20100316T141405', new DateTimeZone('Europe/Amsterdam'));

        $compare = new DateTimeImmutable('2010-03-16 14:14:05', new DateTimeZone('Europe/Amsterdam'));
        $this->assertEquals($compare, $dateTime);

    }

    function testParseICalendarDate() {

        $dateTime = DateTimeParser::parseDate('20100316');

        $expected = new DateTimeImmutable('2010-03-16 00:00:00', new DateTimeZone('UTC'));

        $this->assertEquals($expected, $dateTime);

        $dateTime = DateTimeParser::parse('20100316');
        $this->assertEquals($expected, $dateTime);

    }

    /**
     * TCheck if a date with year > 4000 will not throw an exception. iOS seems to use 45001231 in yearly recurring events
     */
    function testParseICalendarDateGreaterThan4000() {

        $dateTime = DateTimeParser::parseDate('45001231');

        $expected = new DateTimeImmutable('4500-12-31 00:00:00', new DateTimeZone('UTC'));

        $this->assertEquals($expected, $dateTime);

        $dateTime = DateTimeParser::parse('45001231');
        $this->assertEquals($expected, $dateTime);

    }

    /**
     * Check if a datetime with year > 4000 will not throw an exception. iOS seems to use 45001231T235959 in yearly recurring events
     */
    function testParseICalendarDateTimeGreaterThan4000() {

        $dateTime = DateTimeParser::parseDateTime('45001231T235959');

        $expected = new DateTimeImmutable('4500-12-31 23:59:59', new DateTimeZone('UTC'));

        $this->assertEquals($expected, $dateTime);

        $dateTime = DateTimeParser::parse('45001231T235959');
        $this->assertEquals($expected, $dateTime);

    }

    /**
     * @depends testParseICalendarDate
     * @expectedException \Sabre\VObject\InvalidDataException
     */
    function testParseICalendarDateBadFormat() {

        $dateTime = DateTimeParser::parseDate('20100316T141405');

    }

    /**
     * @depends testParseICalendarDate
     * @expectedException \Sabre\VObject\InvalidDataException
     */
    function testParseICalendarDateInvalidDate() {

        $dateTime = DateTimeParser::parseDate('20101331');

    }

    /**
     * @dataProvider vcardDates
     */
    function testVCardDate($input, $output) {

        $this->assertEquals(
            $output,
            DateTimeParser::parseVCardDateTime($input)
        );

    }

    /**
     * @expectedException \Sabre\VObject\InvalidDataException
     */
    function testBadVCardDate() {

        DateTimeParser::parseVCardDateTime('1985---01');

    }

    /**
     * @expectedException \Sabre\VObject\InvalidDataException
     */
    function testBadVCardTime() {

        DateTimeParser::parseVCardTime('23:12:166');

    }

    function vcardDates() {

        return [
            [
                "19961022T140000",
                [
                    "year"     => 1996,
                    "month"    => 10,
                    "date"     => 22,
                    "hour"     => 14,
                    "minute"   => 00,
                    "second"   => 00,
                    "timezone" => null
                ],
            ],
            [
                "--1022T1400",
                [
                    "year"     => null,
                    "month"    => 10,
                    "date"     => 22,
                    "hour"     => 14,
                    "minute"   => 00,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "---22T14",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => 22,
                    "hour"     => 14,
                    "minute"   => null,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "19850412",
                [
                    "year"     => 1985,
                    "month"    => 4,
                    "date"     => 12,
                    "hour"     => null,
                    "minute"   => null,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "1985-04",
                [
                    "year"     => 1985,
                    "month"    => 04,
                    "date"     => null,
                    "hour"     => null,
                    "minute"   => null,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "1985",
                [
                    "year"     => 1985,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => null,
                    "minute"   => null,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "--0412",
                [
                    "year"     => null,
                    "month"    => 4,
                    "date"     => 12,
                    "hour"     => null,
                    "minute"   => null,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "---12",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => 12,
                    "hour"     => null,
                    "minute"   => null,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "T102200",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => 10,
                    "minute"   => 22,
                    "second"   => 0,
                    "timezone" => null
                ],
            ],
            [
                "T1022",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => 10,
                    "minute"   => 22,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "T10",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => 10,
                    "minute"   => null,
                    "second"   => null,
                    "timezone" => null
                ],
            ],
            [
                "T-2200",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => null,
                    "minute"   => 22,
                    "second"   => 00,
                    "timezone" => null
                ],
            ],
            [
                "T--00",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => null,
                    "minute"   => null,
                    "second"   => 00,
                    "timezone" => null
                ],
            ],
            [
                "T102200Z",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => 10,
                    "minute"   => 22,
                    "second"   => 00,
                    "timezone" => 'Z'
                ],
            ],
            [
                "T102200-0800",
                [
                    "year"     => null,
                    "month"    => null,
                    "date"     => null,
                    "hour"     => 10,
                    "minute"   => 22,
                    "second"   => 00,
                    "timezone" => '-0800'
                ],
            ],

            // extended format
            [
                "2012-11-29T15:10:53Z",
                [
                    "year"     => 2012,
                    "month"    => 11,
                    "date"     => 29,
                    "hour"     => 15,
                    "minute"   => 10,
                    "second"   => 53,
                    "timezone" => 'Z'
                ],
            ],

            // with milliseconds
            [
                "20121129T151053.123Z",
                [
                    "year"     => 2012,
                    "month"    => 11,
                    "date"     => 29,
                    "hour"     => 15,
                    "minute"   => 10,
                    "second"   => 53,
                    "timezone" => 'Z'
                ],
            ],

            // extended format with milliseconds
            [
                "2012-11-29T15:10:53.123Z",
                [
                    "year"     => 2012,
                    "month"    => 11,
                    "date"     => 29,
                    "hour"     => 15,
                    "minute"   => 10,
                    "second"   => 53,
                    "timezone" => 'Z'
                ],
            ],
        ];

    }

    function testDateAndOrTime_DateWithYearMonthDay() {

        $this->assertDateAndOrTimeEqualsTo(
            '20150128',
            [
                'year'  => '2015',
                'month' => '01',
                'date'  => '28'
            ]
        );

    }

    function testDateAndOrTime_DateWithYearMonth() {

        $this->assertDateAndOrTimeEqualsTo(
            '2015-01',
            [
                'year'  => '2015',
                'month' => '01'
            ]
        );

    }

    function testDateAndOrTime_DateWithMonth() {

        $this->assertDateAndOrTimeEqualsTo(
            '--01',
            [
                'month' => '01'
            ]
        );

    }

    function testDateAndOrTime_DateWithMonthDay() {

        $this->assertDateAndOrTimeEqualsTo(
            '--0128',
            [
                'month' => '01',
                'date'  => '28'
            ]
        );

    }

    function testDateAndOrTime_DateWithDay() {

        $this->assertDateAndOrTimeEqualsTo(
            '---28',
            [
                'date' => '28'
            ]
        );

    }

    function testDateAndOrTime_TimeWithHour() {

        $this->assertDateAndOrTimeEqualsTo(
            '13',
            [
                'hour' => '13'
            ]
        );

    }

    function testDateAndOrTime_TimeWithHourMinute() {

        $this->assertDateAndOrTimeEqualsTo(
            '1353',
            [
                'hour'   => '13',
                'minute' => '53'
            ]
        );

    }

    function testDateAndOrTime_TimeWithHourSecond() {

        $this->assertDateAndOrTimeEqualsTo(
            '135301',
            [
                'hour'   => '13',
                'minute' => '53',
                'second' => '01'
            ]

        );

    }

    function testDateAndOrTime_TimeWithMinute() {

        $this->assertDateAndOrTimeEqualsTo(
            '-53',
            [
                'minute' => '53'
            ]
        );

    }

    function testDateAndOrTime_TimeWithMinuteSecond() {

        $this->assertDateAndOrTimeEqualsTo(
            '-5301',
            [
                'minute' => '53',
                'second' => '01'
            ]
        );

    }

    function testDateAndOrTime_TimeWithSecond() {

        $this->assertTrue(true);

        /**
         * This is unreachable due to a conflict between date and time pattern.
         * This is an error in the specification, not in our implementation.
         */
    }

    function testDateAndOrTime_TimeWithSecondZ() {

        $this->assertDateAndOrTimeEqualsTo(
            '--01Z',
            [
                'second'   => '01',
                'timezone' => 'Z'
            ]
        );

    }

    function testDateAndOrTime_TimeWithSecondTZ() {

        $this->assertDateAndOrTimeEqualsTo(
            '--01+1234',
            [
                'second'   => '01',
                'timezone' => '+1234'
            ]
        );

    }

    function testDateAndOrTime_DateTimeWithYearMonthDayHour() {

        $this->assertDateAndOrTimeEqualsTo(
            '20150128T13',
            [
                'year'  => '2015',
                'month' => '01',
                'date'  => '28',
                'hour'  => '13'
            ]
        );

    }

    function testDateAndOrTime_DateTimeWithMonthDayHour() {

        $this->assertDateAndOrTimeEqualsTo(
            '--0128T13',
            [
                'month' => '01',
                'date'  => '28',
                'hour'  => '13'
            ]
        );

    }

    function testDateAndOrTime_DateTimeWithDayHour() {

        $this->assertDateAndOrTimeEqualsTo(
            '---28T13',
            [
                'date' => '28',
                'hour' => '13'
            ]
        );

    }

    function testDateAndOrTime_DateTimeWithDayHourMinute() {

        $this->assertDateAndOrTimeEqualsTo(
            '---28T1353',
            [
                'date'   => '28',
                'hour'   => '13',
                'minute' => '53'
            ]
        );

    }

    function testDateAndOrTime_DateTimeWithDayHourMinuteSecond() {

        $this->assertDateAndOrTimeEqualsTo(
            '---28T135301',
            [
                'date'   => '28',
                'hour'   => '13',
                'minute' => '53',
                'second' => '01'
            ]
        );

    }

    function testDateAndOrTime_DateTimeWithDayHourZ() {

        $this->assertDateAndOrTimeEqualsTo(
            '---28T13Z',
            [
                'date'     => '28',
                'hour'     => '13',
                'timezone' => 'Z'
            ]
        );

    }

    function testDateAndOrTime_DateTimeWithDayHourTZ() {

        $this->assertDateAndOrTimeEqualsTo(
            '---28T13+1234',
            [
                'date'     => '28',
                'hour'     => '13',
                'timezone' => '+1234'
            ]
        );

    }

    protected function assertDateAndOrTimeEqualsTo($date, $parts) {

        $this->assertSame(
            DateTimeParser::parseVCardDateAndOrTime($date),
            array_merge(
                [
                    'year'     => null,
                    'month'    => null,
                    'date'     => null,
                    'hour'     => null,
                    'minute'   => null,
                    'second'   => null,
                    'timezone' => null
                ],
                $parts
            )
        );

    }

}
