<?php
declare(strict_types=1);
namespace JKingWeb\Arsse;


class TestDbDriverSQLite3 extends \PHPUnit\Framework\TestCase {
    use Test\Tools;

    protected $data;
	protected $drv;

    function setUp() {
		$conf = new Conf();
		$conf->dbDriver = Db\SQLite3\Driver::class;
		$conf->dbSQLite3File = tempnam(sys_get_temp_dir(), 'ook');
		$this->data = new Test\RuntimeData($conf);
		$this->drv = new Db\SQLite3\Driver($this->data, true);
    }

    function tearDown() {
        unset($this->drv);
		unlink($this->data->conf->dbSQLite3File);
    }

	function testFetchDriverName() {
		$class = $this->data->conf->dbDriver;
		$this->assertTrue(strlen($class::driverName()) > 0);
	}
	
	function testExecAValidStatement() {
		$this->assertTrue($this->drv->exec("CREATE TABLE test(id integer primary key)"));
	}

	function testExecAnInvalidStatement() {
		$this->assertException("engineErrorGeneral", "Db");
		$this->drv->exec("And the meek shall inherit the earth...");
	}

	function testExecMultipleStatements() {
		$this->assertTrue($this->drv->exec("CREATE TABLE test(id integer primary key); INSERT INTO test(id) values(2112)"));
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->assertEquals(2112, $ch->querySingle("SELECT id from test"));
	}

	function testExecTimeout() {
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$ch->exec("BEGIN EXCLUSIVE TRANSACTION");
		$this->assertException("general", "Db", "ExceptionTimeout");
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
	}

	function testExecConstraintViolation() {
		$this->drv->exec("CREATE TABLE test(id integer not null)");
		$this->assertException("constraintViolation", "Db", "ExceptionInput");
		$this->drv->exec("INSERT INTO test(id) values(null)");
	}

	function testExecTypeViolation() {
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->assertException("typeViolation", "Db", "ExceptionInput");
		$this->drv->exec("INSERT INTO test(id) values('ook')");
	}

	function testMakeAValidQuery() {
		$this->assertInstanceOf(Db\SQLite3\Result::class, $this->drv->query("SELECT 1"));
	}

	function testMakeAnInvalidQuery() {
		$this->assertException("engineErrorGeneral", "Db");
		$this->drv->query("Apollo was astonished; Dionysus thought me mad");
	}

	function testQueryTimeout() {
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$ch->exec("BEGIN EXCLUSIVE TRANSACTION");
		$this->assertException("general", "Db", "ExceptionTimeout");
		$this->drv->query("CREATE TABLE test(id integer primary key)");
	}

	function testQueryConstraintViolation() {
		$this->drv->exec("CREATE TABLE test(id integer not null)");
		$this->assertException("constraintViolation", "Db", "ExceptionInput");
		$this->drv->query("INSERT INTO test(id) values(null)");
	}

	function testQueryTypeViolation() {
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->assertException("typeViolation", "Db", "ExceptionInput");
		$this->drv->query("INSERT INTO test(id) values('ook')");
	}

	function testPrepareAValidQuery() {
		$s = $this->drv->prepare("SELECT ?, ?", "int", "int");
		$this->assertInstanceOf(Db\SQLite3\Statement::class, $s);
	}

	function testPrepareAnInvalidQuery() {
		$this->assertException("engineErrorGeneral", "Db");
		$s = $this->drv->prepare("This is an invalid query", "int", "int");
	}

	function testBeginTransaction() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->query($insert);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
	}

	function testCommitTransaction() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->commit();
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(1, $ch->querySingle($select));
	}

	function testRollbackTransaction() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->rollback();
		$this->assertEquals(0, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
	}

	function testBeginChainedTransactions() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
	}

	function testCommitChainedTransactions() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->commit();
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->commit();
		$this->assertEquals(2, $ch->querySingle($select));
	}

	function testRollbackChainedTransactions() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->rollback();
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->rollback();
		$this->assertEquals(0, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
	}

	function testPartiallyRollbackChainedTransactions() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->rollback();
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->commit();
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(1, $ch->querySingle($select));
	}

	function testFullyRollbackChainedTransactions() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->rollback(true);
		$this->assertEquals(0, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
	}

	function testFullyCommitChainedTransactions() {
		$select = "SELECT count(*) FROM test";
		$insert = "INSERT INTO test(id) values(null)";
		$ch = new \SQLite3($this->data->conf->dbSQLite3File);
		$this->drv->exec("CREATE TABLE test(id integer primary key)");
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(1, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->begin();
		$this->drv->query($insert);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(0, $ch->querySingle($select));
		$this->drv->commit(true);
		$this->assertEquals(2, $this->drv->query($select)->getValue());
		$this->assertEquals(2, $ch->querySingle($select));
	}

	function testFetchSchemaVersion() {
		$this->assertSame(0, $this->drv->schemaVersion());
		$this->drv->exec("PRAGMA user_version=1");
		$this->assertSame(1, $this->drv->schemaVersion());
		$this->drv->exec("PRAGMA user_version=2");
		$this->assertSame(2, $this->drv->schemaVersion());

	}

	function testManipulateAdvisoryLock() {
		$this->assertTrue($this->drv->unlock());
		$this->assertFalse($this->drv->isLocked());
		$this->assertTrue($this->drv->lock());
		$this->assertFalse($this->drv->isLocked());
		$this->drv->exec("CREATE TABLE arsse_settings(key primary key, value, type) without rowid; PRAGMA user_version=1");
		$this->assertTrue($this->drv->lock());
		$this->assertTrue($this->drv->isLocked());
		$this->assertFalse($this->drv->lock());
		$this->drv->exec("PRAGMA user_version=0");
		$this->assertFalse($this->drv->isLocked());
		$this->assertTrue($this->drv->lock());
		$this->assertFalse($this->drv->isLocked());
		$this->drv->exec("PRAGMA user_version=1");
		$this->assertTrue($this->drv->isLocked());
		$this->assertTrue($this->drv->unlock());
		$this->assertFalse($this->drv->isLocked());
	}
}