<?php

namespace SilverStripe\ORM\Tests;

use SilverStripe\ORM\FieldType\DBField;
use SilverStripe\ORM\FieldType\DBDatetime;
use SilverStripe\ORM\DataObject;
use SilverStripe\Core\Config\Config;
use SilverStripe\Dev\SapphireTest;
use SilverStripe\Security\Member;

class DBDateTest extends SapphireTest {

	protected $originalTZ;

	public function setUp() {
		// Set timezone to support timestamp->date conversion.
		$this->originalTZ = date_default_timezone_get();
		date_default_timezone_set('Pacific/Auckland');
		parent::setUp();
	}

	public function tearDown() {
		date_default_timezone_set($this->originalTZ);
		parent::tearDown();
	}

	public function testNiceDate() {
		$this->assertEquals('31/03/2008', DBField::create_field('Date', 1206968400)->Nice(),
			"Date->Nice() works with timestamp integers"
		);
		$this->assertEquals('30/03/2008', DBField::create_field('Date', 1206882000)->Nice(),
			"Date->Nice() works with timestamp integers"
		);
		$this->assertEquals('31/03/2008', DBField::create_field('Date', '1206968400')->Nice(),
			"Date->Nice() works with timestamp strings"
		);
		$this->assertEquals('30/03/2008', DBField::create_field('Date', '1206882000')->Nice(),
			"Date->Nice() works with timestamp strings"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '4/3/03')->Nice(),
			"Date->Nice() works with D/M/YY format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '04/03/03')->Nice(),
			"Date->Nice() works with DD/MM/YY format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '4/3/03')->Nice(),
			"Date->Nice() works with D/M/YY format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '4/03/03')->Nice(),
			"Date->Nice() works with D/M/YY format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '4/3/2003')->Nice(),
			"Date->Nice() works with D/M/YYYY format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '4-3-2003')->Nice(),
			"Date->Nice() works with D-M-YYYY format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '2003-03-04')->Nice(),
			"Date->Nice() works with YYYY-MM-DD format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '04/03/2003')->Nice(),
			"Date->Nice() works with DD/MM/YYYY format"
		);
		$this->assertEquals('04/03/2003', DBField::create_field('Date', '04-03-2003')->Nice(),
			"Date->Nice() works with DD/MM/YYYY format"
		);

		$date = DBField::create_field('Date', '2003-03-04');
		Config::inst()->update('SilverStripe\\ORM\\FieldType\\DBDate', 'nice_format', 'd F Y');
		$this->assertEquals('04 March 2003', $date->Nice());
	}

	public function testNiceUS(){
		$this->assertEquals('03/31/2008', DBField::create_field('Date', 1206968400)->NiceUs(),
			"Date->NiceUs() works with timestamp integers"
		);
	}

	public function testYear(){
		$this->assertEquals('2008', DBField::create_field('Date', 1206968400)->Year(),
			"Date->Year() works with timestamp integers"
		);
	}

	public function testDay(){
		$this->assertEquals('Monday', DBField::create_field('Date', 1206968400)->Day(),
			"Date->Day() works with timestamp integers"
		);
	}

	public function testMonth(){
		$this->assertEquals('March', DBField::create_field('Date', 1206968400)->Month(),
			"Date->Month() works with timestamp integers"
		);
	}

	public function testShortMonth(){
		$this->assertEquals('Mar', DBField::create_field('Date', 1206968400)->ShortMonth(),
			"Date->ShortMonth() works with timestamp integers"
		);
	}

	public function testLongDate() {
		$this->assertEquals('31 March 2008', DBField::create_field('Date', 1206968400)->Long(),
			"Date->Long() works with numeric timestamp"
		);
		$this->assertEquals('31 March 2008', DBField::create_field('Date', '1206968400')->Long(),
			"Date->Long() works with string timestamp"
		);
		$this->assertEquals('30 March 2008', DBField::create_field('Date', 1206882000)->Long(),
			"Date->Long() works with numeric timestamp"
		);
		$this->assertEquals('30 March 2008', DBField::create_field('Date', '1206882000')->Long(),
			"Date->Long() works with numeric timestamp"
		);
		$this->assertEquals('3 April 2003', DBField::create_field('Date', '2003-4-3')->Long(),
			"Date->Long() works with YYYY-M-D"
		);
		$this->assertEquals('3 April 2003', DBField::create_field('Date', '3/4/2003')->Long(),
			"Date->Long() works with D/M/YYYY"
		);
	}

	public function testFull(){
		$this->assertEquals('31 Mar 2008', DBField::create_field('Date', 1206968400)->Full(),
			"Date->Full() works with timestamp integers"
		);
	}

	public function testSetNullAndZeroValues() {
		$date = DBField::create_field('Date', '');
		$this->assertNull($date->getValue(), 'Empty string evaluates to NULL');

		$date = DBField::create_field('Date', null);
		$this->assertNull($date->getValue(), 'NULL is set as NULL');

		$date = DBField::create_field('Date', false);
		$this->assertNull($date->getValue(), 'Boolean FALSE evaluates to NULL');

		$date = DBField::create_field('Date', array());
		$this->assertNull($date->getValue(), 'Empty array evaluates to NULL');

		$date = DBField::create_field('Date', '0');
		$this->assertEquals('1970-01-01', $date->getValue(), 'Zero is UNIX epoch date');

		$date = DBField::create_field('Date', 0);
		$this->assertEquals('1970-01-01', $date->getValue(), 'Zero is UNIX epoch date');
	}

	public function testDayOfMonth() {
		$date = DBField::create_field('Date', '2000-10-10');
		$this->assertEquals('10', $date->DayOfMonth());
		$this->assertEquals('10th', $date->DayOfMonth(true));

		$range = $date->RangeString(DBField::create_field('Date', '2000-10-20'));
		$this->assertEquals('10 - 20 Oct 2000', $range);
		$range = $date->RangeString(DBField::create_field('Date', '2000-10-20'), true);
		$this->assertEquals('10th - 20th Oct 2000', $range);
	}

	public function testExtendedDates() {
		$date = DBField::create_field('Date', '1800-10-10');
		$this->assertEquals('10 Oct 1800', $date->Format('d M Y'));

		$date = DBField::create_field('Date', '1500-10-10');
		$this->assertEquals('10 Oct 1500', $date->Format('d M Y'));

		$date = DBField::create_field('Date', '3000-4-3');
		$this->assertEquals('03 Apr 3000', $date->Format('d M Y'));
	}

	public function testAgoInPast() {
		DBDatetime::set_mock_now('2000-12-31 12:00:00');

		$this->assertEquals(
			'1 month ago',
			DBField::create_field('Date', '2000-11-26')->Ago(true, 1),
			'Past match on days, less than two months, lowest significance'
		);

		$this->assertEquals(
			'50 days ago', // Rounded from 49.5 days up
			DBField::create_field('Date', '2000-11-12')->Ago(),
			'Past match on days, less than two months'
		);

		$this->assertEquals(
			'2 months ago',
			DBField::create_field('Date', '2000-10-27')->Ago(),
			'Past match on days, over two months'
		);

		$this->assertEquals(
			'66 days ago', // rounded from 65.5 days up
			DBField::create_field('Date', '2000-10-27')->Ago(true, 3),
			'Past match on days, over two months, significance of 3'
		);

		$this->assertEquals(
			'10 years ago',
			DBField::create_field('Date', '1990-12-31')->Ago(),
			'Exact past match on years'
		);

		$this->assertEquals(
			'10 years ago',
			DBField::create_field('Date', '1990-12-30')->Ago(),
			'Approximate past match on years'
		);

		$this->assertEquals(
			'1 year ago',
			DBField::create_field('Date', '1999-12-30')->Ago(true, 1),
			'Approximate past match in singular, lowest significance'
		);

		$this->assertEquals(
			'12 months ago',
			DBField::create_field('Date', '1999-12-30')->Ago(),
			'Approximate past match in singular'
		);

		DBDatetime::clear_mock_now();
	}

	public function testAgoInFuture() {
		DBDatetime::set_mock_now('2000-12-31 00:00:00');

		$this->assertEquals(
			'in 10 years',
			DBField::create_field('Date', '2010-12-31')->Ago(),
			'Exact past match on years'
		);

		$this->assertEquals(
			'in 1 day',
			DBField::create_field('Date', '2001-01-01')->Ago(true, 1),
			'Approximate past match on minutes'
		);

		$this->assertEquals(
			'in 24 hours',
			DBField::create_field('Date', '2001-01-01')->Ago(),
			'Approximate past match on minutes'
		);

		DBDatetime::clear_mock_now();
	}

	public function testFormatFromSettings() {

		$memberID = $this->logInWithPermission();
		$member = DataObject::get_by_id(Member::class, $memberID);
		$member->DateFormat = 'dd/MM/YYYY';
		$member->write();

		$fixtures = array(
			'2000-12-31' => '31/12/2000',
			'31-12-2000' => '31/12/2000',
			'31/12/2000' => '31/12/2000',
			'2014-04-01' => '01/04/2014'
		);

		foreach($fixtures as $from => $to) {
			$date = DBField::create_field('Date', $from);
			// With member
			$this->assertEquals($to, $date->FormatFromSettings($member));
			// Without member
			$this->assertEquals($to, $date->FormatFromSettings());
		}
	}

}