<?php

use Combodo\iTop\Test\UnitTest\ItopDataTestCase;

class DBObjectSetTest extends ItopDataTestCase
{
	public const USE_TRANSACTION = true;

	protected function setUp(): void
	{
		parent::setUp(); // TODO: Change the autogenerated stub
		$this->CreateURs();
	}

	protected function tearDown(): void
	{
		CMDBSource::TriggerExceptionWhenSqlQuery(null);
		parent::tearDown(); // TODO: Change the autogenerated stub
	}

	private function CreateURs()
	{
		$this->CreateTestOrganization();
		for ($i = 0; $i < 10; $i++) {
			$this->CreateTicket($i);
		}
	}

	public function testCount()
	{
		$oSearch = DBObjectSearch::FromOQL_AllData("SELECT UserRequest");
		$oSet = new DBObjectSet($oSearch);

		$iCount = $oSet->Count();
		$oSet->Fetch();
		$this->assertEquals($iCount, $oSet->Count());
		$this->assertEquals($iCount, $oSet->CountWithLimit(0));
		$this->assertTrue($oSet->CountExceeds(0));

		//no DB SQL query: exception will be raised after here
		CMDBSource::TriggerExceptionWhenSqlQuery(__METHOD__.' :'.__LINE__);
		$this->assertEquals($iCount, $oSet->Count(), 'should use cache and not call DB again');
	}

	public function testRewind()
	{
		$oSearch = DBObjectSearch::FromOQL_AllData("SELECT UserRequest");
		$oSet = new DBObjectSet($oSearch);

		while ($oObj = $oSet->Fetch()) {
			$this->assertNotEquals(0, $oObj->GetKey());
		}

		//no DB SQL query: exception will be raised after here
		CMDBSource::TriggerExceptionWhenSqlQuery(__METHOD__.' :'.__LINE__);
		$oSet->Rewind();
		while ($oObj = $oSet->Fetch()) {
			$this->assertNotEquals(0, $oObj->GetKey());
		}
	}

	public function testDBObjectSetComparator()
	{
		$oSearch = DBObjectSearch::FromOQL_AllData("SELECT UserRequest");
		$DBObjectSet1 = new DBObjectSet($oSearch);
		$DBObjectSet3 = new DBObjectSet($oSearch);
		$oDBObjectSetComparator = new DBObjectSetComparator($DBObjectSet1, $DBObjectSet3);
		$this->assertTrue($oDBObjectSetComparator->SetsAreEquivalent());
	}

	public function testDBObjectSetComparator_CheckCache()
	{
		$oSearch = DBObjectSearch::FromOQL_AllData("SELECT UserRequest");
		$DBObjectSet1 = new DBObjectSet($oSearch);
		$DBObjectSet3 = new DBObjectSet($oSearch);
		$oDBObjectSetComparator = new DBObjectSetComparator($DBObjectSet1, $DBObjectSet3);
		$this->assertTrue($oDBObjectSetComparator->SetsAreEquivalent());

		$sMsg = __METHOD__.' :'.__LINE__;
		//no DB SQL query: exception will be raised after here
		CMDBSource::TriggerExceptionWhenSqlQuery($sMsg);
		$oDBObjectSetComparator = new DBObjectSetComparator($DBObjectSet1, $DBObjectSet3);
		$this->assertTrue($oDBObjectSetComparator->SetsAreEquivalent());

		$oDBObjectSetComparator = new DBObjectSetComparator($DBObjectSet1, new DBObjectSet($oSearch));
		$this->expectExceptionMessage($sMsg, "should call DB again this time");
		$this->assertTrue($oDBObjectSetComparator->SetsAreEquivalent());
	}

	public static function JeffreyProvider()
	{
		return [
			'basic'     => [false],
			'opt trick' => [true],
		];
	}

	/**
	 * @dataProvider JeffreyProvider
	 */
	public function testJeffrey(bool $bTrick)
	{
		echo '<p>-------</p>';

		$this->doesNotPerformAssertions();
		$iMax = 100;


		$oFilter = DBObjectSearch::FromOQL_AllData('SELECT UserRequest');
		$oSet = new DBObjectSet($oFilter);
		$oSet->OptimizeColumnLoad([
			'UserRequest' => ['ref', 'status', 'title'],
		]);

		if ($bTrick) {
			$oNewSet = DBObjectSet::FromScratch($oSet->GetClass());
			while ($oObj = $oSet->Fetch()) {
				$oNewSet->AddObject($oObj);
			}
			$oSet = $oNewSet;
		}

		echo '<p>Start: '.date('Y-m-d H:i:s').'</p>';
		$i = 0;
		while ($i < $iMax) {
			$oSet->Rewind();
			while ($oObj = $oSet->Fetch()) {
				// Do nothing
				$s = $oObj->Get('title');
			}

			$i += 1;
		}

		$peak = memory_get_peak_usage(true) / 1000000;
		echo '<p>End: '.date('Y-m-d H:i:s').'</p><p>Peak memory: '.$peak.'</p> \n';
	}
}