/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.test.cut;

import java.lang.reflect.Member;
import java.math.BigDecimal;
import java.util.Currency;
import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.cfg.Configuration;
import org.hibernate.criterion.Restrictions;
import org.hibernate.dialect.DB2Dialect;
import org.hibernate.dialect.HSQLDialect;
import org.hibernate.dialect.SybaseASE15Dialect;
import org.hibernate.hql.internal.ast.QuerySyntaxException;

import org.hibernate.metamodel.model.domain.spi.PersistentAttributeDescriptor;
import org.hibernate.metamodel.model.domain.spi.SingularPersistentAttribute;
import org.hibernate.metamodel.spi.MetamodelImplementor;
import org.hibernate.testing.DialectChecks;
import org.hibernate.testing.RequiresDialectFeature;
import org.hibernate.testing.SkipForDialect;
import org.hibernate.testing.TestForIssue;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
import org.junit.Test;

import javax.persistence.metamodel.Attribute;
import javax.persistence.metamodel.ManagedType;
import javax.persistence.metamodel.SingularAttribute;

import static org.hibernate.testing.junit4.ExtraAssertions.assertTyping;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

/**
 * @author Gavin King
 */
public class CompositeUserTypeTest extends BaseCoreFunctionalTestCase {

	@Override
	public String[] getMappings() {
		return new String[] { "cut/types.hbm.xml", "cut/Transaction.hbm.xml" };
	}

	@Test
	public void testCompositeUserType() {
		Session s = openSession();
		org.hibernate.Transaction t = s.beginTransaction();
		
		Transaction tran = new Transaction();
		tran.setDescription("a small transaction");
		tran.setValue( new MonetoryAmount( new BigDecimal(1.5), Currency.getInstance("USD") ) );
		s.persist(tran);
		
		List result = s.createQuery("from Transaction tran where tran.value.amount > 1.0 and tran.value.currency = 'USD'").list();
		assertEquals( result.size(), 1 );
		tran.getValue().setCurrency( Currency.getInstance("AUD") );
		result = s.createQuery("from Transaction tran where tran.value.amount > 1.0 and tran.value.currency = 'AUD'").list();
		assertEquals( result.size(), 1 );
		
		if ( !(getDialect() instanceof HSQLDialect) ) {
		
			result = s.createQuery("from Transaction txn where txn.value = (1.5, 'AUD')").list();
			assertEquals( result.size(), 1 );
			result = s.createQuery("from Transaction where value = (1.5, 'AUD')").list();
			assertEquals( result.size(), 1 );
			result = s.createQuery( "from Transaction where value != (1.4, 'AUD')" ).list();
			assertEquals( result.size(), 1 );
		}
		
		s.delete(tran);
		t.commit();
		s.close();
	}

	@Test
	public void testMetamodel() {
		MetamodelImplementor metamodel = sessionFactory().getMetamodel();
		PersistentAttributeDescriptor<? super Transaction, ?> value = metamodel.managedType(Transaction.class).getAttribute("value");
		assertEquals(Attribute.PersistentAttributeType.EMBEDDED, value.getPersistentAttributeType());

		SingularPersistentAttribute<?, ?> singularPersistentAttribute = (SingularPersistentAttribute<?, ?>) value;
		ManagedType<?> attribute = (ManagedType<?>) singularPersistentAttribute.getType();
		SingularAttribute<?, ?> amount = attribute.getSingularAttribute("amount");
		assertNotNull(amount);

		Member javaMember = amount.getJavaMember();
		assertNull(javaMember);
	}
	
	@Test
	@SkipForDialect ( value = { SybaseASE15Dialect.class }, jiraKey = "HHH-6788" )
	@SkipForDialect ( value = { DB2Dialect.class }, jiraKey = "HHH-6867" )
	public void testCustomColumnReadAndWrite() {
		Session s = openSession();
		org.hibernate.Transaction t = s.beginTransaction();
		final BigDecimal AMOUNT = new BigDecimal(73000000d);
		final BigDecimal AMOUNT_MILLIONS = AMOUNT.divide(new BigDecimal(1000000d));
		MutualFund f = new MutualFund();
		f.setHoldings( new MonetoryAmount( AMOUNT, Currency.getInstance("USD") ) );
		s.persist(f);
		s.flush();

		// Test value conversion during insert
		BigDecimal amountViaSql = (BigDecimal)s.createSQLQuery("select amount_millions from MutualFund").uniqueResult();
		assertEquals(AMOUNT_MILLIONS.doubleValue(), amountViaSql.doubleValue(), 0.01d);
		
		// Test projection
		BigDecimal amountViaHql = (BigDecimal)s.createQuery("select f.holdings.amount from MutualFund f").uniqueResult();
		assertEquals(AMOUNT.doubleValue(), amountViaHql.doubleValue(), 0.01d);
		
		// Test restriction and entity load via criteria
		BigDecimal one = new BigDecimal(1);
		f = (MutualFund)s.createCriteria(MutualFund.class)
			.add(Restrictions.between("holdings.amount", AMOUNT.subtract(one), AMOUNT.add(one)))
			.uniqueResult();
		assertEquals(AMOUNT.doubleValue(), f.getHoldings().getAmount().doubleValue(), 0.01d);
		
		// Test predicate and entity load via HQL
		f = (MutualFund)s.createQuery("from MutualFund f where f.holdings.amount between ?1 and ?2")
			.setBigDecimal(1, AMOUNT.subtract(one))
			.setBigDecimal(2, AMOUNT.add(one))
			.uniqueResult();
		assertEquals(AMOUNT.doubleValue(), f.getHoldings().getAmount().doubleValue(), 0.01d);
				
		s.delete(f);
		t.commit();
		s.close();
		
	}

	/**
	 * Tests the {@code =} operator on composite types.
	 */
	public void testEqualOperator() {
		final Session s = openSession();
		s.getTransaction().begin();

		final Transaction txn = new Transaction();
		txn.setDescription( "foo" );
		txn.setValue( new MonetoryAmount( new BigDecimal( 42 ), Currency.getInstance( "AUD" ) ) );
		txn.setTimestamp( new CompositeDateTime( 2014, 8, 23, 14, 35, 0 ) );
		s.persist( txn );

		final Query q = s.createQuery( "from Transaction where value = :amount" );

		/* Both amount and currency match. */
		q.setParameter( "amount", new MonetoryAmount( new BigDecimal( 42 ), Currency.getInstance( "AUD" ) ) );
		assertEquals( 1, q.list().size() );

		/* Only currency matches. */
		q.setParameter( "amount", new MonetoryAmount( new BigDecimal( 36 ), Currency.getInstance( "AUD" ) ) );
		assertEquals( 0, q.list().size() );

		/* Only amount matches. */
		q.setParameter( "amount", new MonetoryAmount( new BigDecimal( 42 ), Currency.getInstance( "EUR" ) ) );
		assertEquals( 0, q.list().size() );

		/* None match. */
		q.setParameter( "amount", new MonetoryAmount( new BigDecimal( 76 ), Currency.getInstance( "USD" ) ) );
		assertEquals( 0, q.list().size() );

		final Query qTimestamp = s.createQuery( "from Transaction where timestamp = :timestamp" );

		/* All matches. */
		qTimestamp.setParameter( "timestamp", new CompositeDateTime( 2014, 8, 23, 14, 35, 0 ) );
		assertEquals( 1, qTimestamp.list().size() );

		/* None matches. */
		qTimestamp.setParameter( "timestamp", new CompositeDateTime( 2013, 9, 25, 12, 31, 25 ) );
		assertEquals( 0, qTimestamp.list().size() );

		/* Year doesn't match. */
		qTimestamp.setParameter( "timestamp", new CompositeDateTime( 2013, 8, 23, 14, 35, 0 ) );
		assertEquals( 0, qTimestamp.list().size() );

		/* Month doesn't match. */
		qTimestamp.setParameter( "timestamp", new CompositeDateTime( 2014, 9, 23, 14, 35, 0 ) );
		assertEquals( 0, qTimestamp.list().size() );

		/* Minute doesn't match. */
		qTimestamp.setParameter( "timestamp", new CompositeDateTime( 2014, 8, 23, 14, 41, 0 ) );
		assertEquals( 0, qTimestamp.list().size() );

		/* Second doesn't match. */
		qTimestamp.setParameter( "timestamp", new CompositeDateTime( 2014, 8, 23, 14, 35, 28 ) );
		assertEquals( 0, qTimestamp.list().size() );

		s.delete( txn );
		s.getTransaction().commit();
		s.close();
	}

	/**
	 * Tests the {@code <>} operator on composite types.
	 */
	@Test
	@TestForIssue( jiraKey = "HHH-5946" )
	public void testNotEqualOperator() {
		final Session s = openSession();
		s.getTransaction().begin();

		final Transaction t1 = new Transaction();
		t1.setDescription( "foo" );
		t1.setValue( new MonetoryAmount( new BigDecimal( 178 ), Currency.getInstance( "EUR" ) ) );
		t1.setTimestamp( new CompositeDateTime( 2014, 8, 23, 14, 23, 0 ) );
		s.persist( t1 );

		final Transaction t2 = new Transaction();
		t2.setDescription( "bar" );
		t2.setValue( new MonetoryAmount( new BigDecimal( 1000000 ), Currency.getInstance( "USD" ) ) );
		t1.setTimestamp( new CompositeDateTime( 2014, 8, 22, 14, 23, 0 ) );
		s.persist( t2 );

		final Transaction t3 = new Transaction();
		t3.setDescription( "bar" );
		t3.setValue( new MonetoryAmount( new BigDecimal( 1000000 ), Currency.getInstance( "EUR" ) ) );
		t3.setTimestamp( new CompositeDateTime( 2014, 8, 22, 14, 23, 01 ) );
		s.persist( t3 );

		final Query q1 = s.createQuery( "from Transaction where value <> :amount" );
		q1.setParameter( "amount", new MonetoryAmount( new BigDecimal( 178 ), Currency.getInstance( "EUR" ) ) );
		assertEquals( 2, q1.list().size() );

		final Query q2 = s.createQuery( "from Transaction where value <> :amount and description = :str" );
		q2.setParameter( "amount", new MonetoryAmount( new BigDecimal( 1000000 ), Currency.getInstance( "USD" ) ) );
		q2.setParameter( "str", "bar" );
		assertEquals( 1, q2.list().size() );

		final Query q3 = s.createQuery( "from Transaction where timestamp <> :timestamp" );
		q3.setParameter( "timestamp", new CompositeDateTime( 2014, 8, 23, 14, 23, 0 ) );
		assertEquals( 2, q3.list().size() );

		s.delete( t3 );
		s.delete( t2 );
		s.delete( t1 );
		s.getTransaction().commit();
		s.close();
	}

	/**
	 * Tests the {@code <} operator on composite types. As long as we don't support it, we need to throw an exception
	 * rather than create a random query.
	 */
	@Test
	@TestForIssue( jiraKey = "HHH-5946" )
	@RequiresDialectFeature( value = DialectChecks.DoesNotSupportRowValueConstructorSyntax.class )
	public void testLessThanOperator() {
		final Session s = openSession();
		try {
			final Query q = s.createQuery( "from Transaction where value < :amount" );
			q.setParameter( "amount", new MonetoryAmount( BigDecimal.ZERO, Currency.getInstance( "EUR" ) ) );
			q.list();
		}
		catch (IllegalArgumentException e) {
			assertTyping( QuerySyntaxException.class, e.getCause() );
			//expected
		}
		finally {
			s.close();
		}
	}

	/**
	 * Tests the {@code <=} operator on composite types. As long as we don't support it, we need to throw an exception
	 * rather than create a random query.
	 */
	@Test
	@TestForIssue( jiraKey = "HHH-5946" )
	@RequiresDialectFeature( value = DialectChecks.DoesNotSupportRowValueConstructorSyntax.class )
	public void testLessOrEqualOperator() {
		final Session s = openSession();
		try {
			final Query q = s.createQuery( "from Transaction where value <= :amount" );
			q.setParameter( "amount", new MonetoryAmount( BigDecimal.ZERO, Currency.getInstance( "USD" ) ) );
			q.list();
		}
		catch (IllegalArgumentException e) {
			assertTyping( QuerySyntaxException.class, e.getCause() );
			//expected
		}
		finally {
			s.close();
		}
	}

	/**
	 * Tests the {@code >} operator on composite types. As long as we don't support it, we need to throw an exception
	 * rather than create a random query.
	 */
	@Test
	@TestForIssue( jiraKey = "HHH-5946" )
	@RequiresDialectFeature( value = DialectChecks.DoesNotSupportRowValueConstructorSyntax.class )
	public void testGreaterThanOperator() {
		final Session s = openSession();
		try {
			final Query q = s.createQuery( "from Transaction where value > :amount" );
			q.setParameter( "amount", new MonetoryAmount( BigDecimal.ZERO, Currency.getInstance( "EUR" ) ) );
			q.list();
		}
		catch (IllegalArgumentException e) {
			assertTyping( QuerySyntaxException.class, e.getCause() );
			//expected
		}
		finally {
			s.close();
		}
	}

	/**
	 * Tests the {@code >=} operator on composite types. As long as we don't support it, we need to throw an exception
	 * rather than create a random query.
	 */
	@Test
	@TestForIssue( jiraKey = "HHH-5946" )
	@RequiresDialectFeature( value = DialectChecks.DoesNotSupportRowValueConstructorSyntax.class )
	public void testGreaterOrEqualOperator() {
		final Session s = openSession();
		try {
			final Query q = s.createQuery( "from Transaction where value >= :amount" );
			q.setParameter( "amount", new MonetoryAmount( BigDecimal.ZERO, Currency.getInstance( "USD" ) ) );
			q.list();
		}
		catch (IllegalArgumentException e) {
			assertTyping( QuerySyntaxException.class, e.getCause() );
			//expected
		}
		finally {
			s.close();
		}
	}

}
