/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.sling.api.wrappers.impl;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertNull;

import java.math.BigDecimal;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

import org.junit.Test;

public class ObjectConverterTest {
    
    private static final String STRING_1 = "item1";
    private static final String STRING_2 = "item2";
    private static final boolean BOOLEAN_1 = true;
    private static final boolean BOOLEAN_2 = false;
    private static final byte BYTE_1 = (byte)0x01;
    private static final byte BYTE_2 = (byte)0x02;
    private static final short SHORT_1 = (short)12;
    private static final short SHORT_2 = (short)34;
    private static final int INT_1 = 55;
    private static final int INT_2 = -123;
    private static final long LONG_1 = 1234L;
    private static final long LONG_2 = -4567L;
    private static final float FLOAT_1 = 1.23f;
    private static final float FLOAT_2 = -4.56f;
    private static final double DOUBLE_1 = 12.34d;
    private static final double DOUBLE_2 = -45.67d;
    private static final BigDecimal BIGDECIMAL_1 = new BigDecimal("12345.67");
    private static final BigDecimal BIGDECIMAL_2 = new BigDecimal("-23456.78");
    private static final Calendar CALENDAR_1 = Calendar.getInstance(TimeZone.getTimeZone("GMT"), Locale.US);
    private static final Calendar CALENDAR_2 = Calendar.getInstance(TimeZone.getTimeZone("GMT"), Locale.US);
    {
        CALENDAR_1.set(2016, 10, 15, 8, 20, 30);
        CALENDAR_2.set(2015, 6, 31, 19, 10, 20);
    }
    private static final Date DATE_1 = CALENDAR_1.getTime();
    private static final Date DATE_2 = CALENDAR_2.getTime();

    @Test
    public void testDateToString() {
        Convert.from(STRING_1, STRING_2).to(STRING_1, STRING_2).test();
        Convert.fromPrimitive(BOOLEAN_1, BOOLEAN_2).to(Boolean.toString(BOOLEAN_1), Boolean.toString(BOOLEAN_2)).test();
        Convert.from(BOOLEAN_1, BOOLEAN_2).to(Boolean.toString(BOOLEAN_1), Boolean.toString(BOOLEAN_2)).test();
        Convert.fromPrimitive(BYTE_1, BYTE_2).to(Byte.toString(BYTE_1), Byte.toString(BYTE_2)).test();
        Convert.from(BYTE_1, BYTE_2).to(Byte.toString(BYTE_1), Byte.toString(BYTE_2)).test();
        Convert.fromPrimitive(SHORT_1, SHORT_2).to(Short.toString(SHORT_1), Short.toString(SHORT_2)).test();
        Convert.from(SHORT_1, SHORT_2).to(Short.toString(SHORT_1), Short.toString(SHORT_2)).test();
        Convert.fromPrimitive(INT_1, INT_2).to(Integer.toString(INT_1), Integer.toString(INT_2)).test();
        Convert.from(INT_1, INT_2).to(Integer.toString(INT_1), Integer.toString(INT_2)).test();
        Convert.fromPrimitive(LONG_1, LONG_2).to(Long.toString(LONG_1), Long.toString(LONG_2)).test();
        Convert.from(LONG_1, LONG_2).to(Long.toString(LONG_1), Long.toString(LONG_2)).test();
        Convert.fromPrimitive(FLOAT_1, FLOAT_2).to(Float.toString(FLOAT_1), Float.toString(FLOAT_2)).test();
        Convert.from(FLOAT_1, FLOAT_2).to(Float.toString(FLOAT_1), Float.toString(FLOAT_2)).test();
        Convert.fromPrimitive(DOUBLE_1, DOUBLE_2).to(Double.toString(DOUBLE_1), Double.toString(DOUBLE_2)).test();
        Convert.from(DOUBLE_1, DOUBLE_2).to(Double.toString(DOUBLE_1), Double.toString(DOUBLE_2)).test();
        Convert.from(BIGDECIMAL_1, BIGDECIMAL_2).to(BIGDECIMAL_1.toString(), BIGDECIMAL_2.toString()).test();
        Convert.from(CALENDAR_1, CALENDAR_2).to(calendarToString(CALENDAR_1), calendarToString(CALENDAR_2)).test();
        Convert.from(DATE_1, DATE_2).to(calendarToString(toCalendar(DATE_1)), calendarToString(toCalendar(DATE_2))).test();
    }
    
    private String calendarToString(Calendar calendar) {
        return calendar.getTime().toInstant().toString();
    }

    private Calendar toCalendar(Date date1) {
        Calendar response = Calendar.getInstance();
        response.setTime(date1);
        return response;
    }

    @Test
    public void testToBoolean() {
        Convert.fromPrimitive(BOOLEAN_1, BOOLEAN_2).to(BOOLEAN_1, BOOLEAN_2).test();
        Convert.from(BOOLEAN_1, BOOLEAN_2).to(BOOLEAN_1, BOOLEAN_2).test();
        Convert.from(Boolean.toString(BOOLEAN_1), Boolean.toString(BOOLEAN_2)).to(BOOLEAN_1, BOOLEAN_2).test();
        Convert.<Integer,Boolean>from(INT_1, INT_2).to(true,true).test();
        Convert.<Integer,Boolean>from(1, 0).to(true,false).test();
        Convert.<Date,Boolean>from(DATE_1, DATE_2).to(false,false).test();
    }
    
    @Test
    public void testToByte() {
        Convert.fromPrimitive(BYTE_1, BYTE_2).to(BYTE_1, BYTE_2).test();
        Convert.from(BYTE_1, BYTE_2).to(BYTE_1, BYTE_2).test();
        Convert.from(Byte.toString(BYTE_1), Byte.toString(BYTE_2)).to(BYTE_1, BYTE_2).test();
        
        // test conversion from other number types
        Convert.from(INT_1, INT_2).to((byte)INT_1, (byte)INT_2).test();
        Convert.fromPrimitive(INT_1, INT_2).to((byte)INT_1, (byte)INT_2).test();

        // test other types that should not be converted
        Convert.<Date,Byte>from(DATE_1, DATE_2).toNull(Byte.class).test();
    }
    
    @Test
    public void testToShort() {
        Convert.fromPrimitive(SHORT_1, SHORT_2).to(SHORT_1, SHORT_2).test();
        Convert.from(SHORT_1, SHORT_2).to(SHORT_1, SHORT_2).test();
        Convert.from(Short.toString(SHORT_1), Short.toString(SHORT_2)).to(SHORT_1, SHORT_2).test();
        
        // test conversion from other number types
        Convert.from(INT_1, INT_2).to((short)INT_1, (short)INT_2).test();
        Convert.fromPrimitive(INT_1, INT_2).to((short)INT_1, (short)INT_2).test();

        // test other types that should not be converted
        Convert.<Date,Short>from(DATE_1, DATE_2).toNull(Short.class).test();
    }
    
    @Test
    public void testToInteger() {
        Convert.fromPrimitive(INT_1, INT_2).to(INT_1, INT_2).test();
        Convert.from(INT_1, INT_2).to(INT_1, INT_2).test();
        Convert.from(Integer.toString(INT_1), Integer.toString(INT_2)).to(INT_1, INT_2).test();
        
        // test conversion from other number types
        Convert.from(SHORT_1, SHORT_2).to((int)SHORT_1, (int)SHORT_2).test();
        Convert.fromPrimitive(SHORT_1, SHORT_2).to((int)SHORT_1, (int)SHORT_2).test();

        // test other types that should not be converted
        Convert.<Date,Integer>from(DATE_1, DATE_2).toNull(Integer.class).test();
    }
    
    @Test
    public void testToLong() {
        Convert.fromPrimitive(LONG_1, LONG_2).to(LONG_1, LONG_2).test();
        Convert.from(LONG_1, LONG_2).to(LONG_1, LONG_2).test();
        Convert.from(Long.toString(LONG_1), Long.toString(LONG_2)).to(LONG_1, LONG_2).test();
        
        // test conversion from other number types
        Convert.from(SHORT_1, SHORT_2).to((long)SHORT_1, (long)SHORT_2).test();
        Convert.fromPrimitive(SHORT_1, SHORT_2).to((long)SHORT_1, (long)SHORT_2).test();

        // test conversion from DATE to LONG
        Convert.<Date,Long>from(DATE_1, DATE_2).to(DATE_1.getTime(), DATE_2.getTime()).test();
    }
    
    @Test
    public void testToFloat() {
        Convert.fromPrimitive(FLOAT_1, FLOAT_2).to(FLOAT_1, FLOAT_2).test();
        Convert.from(FLOAT_1, FLOAT_2).to(FLOAT_1, FLOAT_2).test();
        Convert.from(Float.toString(FLOAT_1), Float.toString(FLOAT_2)).to(FLOAT_1, FLOAT_2).test();
        
        // test conversion from other number types
        Convert.from(SHORT_1, SHORT_2).to((float)SHORT_1, (float)SHORT_2).test();
        Convert.fromPrimitive(SHORT_1, SHORT_2).to((float)SHORT_1, (float)SHORT_2).test();

        // test other types that should not be converted
        Convert.<Date,Float>from(DATE_1, DATE_2).toNull(Float.class).test();
    }
    
    @Test
    public void testToDouble() {
        Convert.fromPrimitive(DOUBLE_1, DOUBLE_2).to(DOUBLE_1, DOUBLE_2).test();
        Convert.from(DOUBLE_1, DOUBLE_2).to(DOUBLE_1, DOUBLE_2).test();
        Convert.from(Double.toString(DOUBLE_1), Double.toString(DOUBLE_2)).to(DOUBLE_1, DOUBLE_2).test();
        
        // test conversion from other number types
        Convert.from(SHORT_1, SHORT_2).to((double)SHORT_1, (double)SHORT_2).test();
        Convert.fromPrimitive(SHORT_1, SHORT_2).to((double)SHORT_1, (double)SHORT_2).test();

        // test other types that should not be converted
        Convert.<Date,Double>from(DATE_1, DATE_2).toNull(Double.class).test();
    }
    
    @Test
    public void testToBigDecimal() {
        Convert.from(BIGDECIMAL_1, BIGDECIMAL_2).to(BIGDECIMAL_1, BIGDECIMAL_2).test();
        Convert.from(BIGDECIMAL_1.toString(), BIGDECIMAL_2.toString()).to(BIGDECIMAL_1, BIGDECIMAL_2).test();
        
        // test conversion from other number types
        Convert.from(LONG_1, LONG_2).to(BigDecimal.valueOf(LONG_1), BigDecimal.valueOf(LONG_2)).test();
        Convert.fromPrimitive(LONG_1, LONG_2).to(BigDecimal.valueOf(LONG_1), BigDecimal.valueOf(LONG_2)).test();
        Convert.from(DOUBLE_1, DOUBLE_2).to(BigDecimal.valueOf(DOUBLE_1), BigDecimal.valueOf(DOUBLE_2)).test();
        Convert.fromPrimitive(DOUBLE_1, DOUBLE_2).to(BigDecimal.valueOf(DOUBLE_1), BigDecimal.valueOf(DOUBLE_2)).test();

        // test other types that should not be converted
        Convert.<Date,BigDecimal>from(DATE_1, DATE_2).toNull(BigDecimal.class).test();
    }
    
    @Test
    public void testToCalendar() {
        Convert.from(CALENDAR_1, CALENDAR_2).to(CALENDAR_1, CALENDAR_2).test();
        Convert.from(calendarToString(CALENDAR_1), calendarToString(CALENDAR_2)).to(CALENDAR_1, CALENDAR_2).test();
        
        // test conversion from other date types
        Convert.from(DATE_1, DATE_2).to(toCalendar(DATE_1), toCalendar(DATE_2)).test();

        // test other types that should not be converted
        Convert.<String,Calendar>from(STRING_1, STRING_2).toNull(Calendar.class).test();
        Convert.<Boolean,Calendar>from(BOOLEAN_1, BOOLEAN_2).toNull(Calendar.class).test();
    }
    
    @Test
    public void testToDate() {
        Convert.from(DATE_1, DATE_2).to(DATE_1, DATE_2).test();
        Convert.from(dateToString(DATE_1), dateToString(DATE_2)).to(DATE_1, DATE_2).test();
        
        // test conversion from other date types
        Convert.from(CALENDAR_1, CALENDAR_2).to(toDate(CALENDAR_1), toDate(CALENDAR_2)).test();

        // test other types that should not be converted
        Convert.<String,Date>from(STRING_1, STRING_2).toNull(Date.class).test();
        Convert.<Boolean,Date>from(BOOLEAN_1, BOOLEAN_2).toNull(Date.class).test();
    }
    
    private Object toDate(Calendar calendar1) {
        return calendar1.getTime();
    }

    private Object dateToString(Date date1) {
        return date1.toInstant().toString();
    }

    @Test
    public void testPrimitiveByteArray() {
        byte[] array = new byte[] { 0x01, 0x02, 0x03 };
        assertArrayEquals(array, ObjectConverter.convert(array, byte[].class));
        assertArrayEquals(new byte[0], ObjectConverter.convert(new byte[0], byte[].class));
        assertNull(ObjectConverter.convert(null, byte[].class));
    }
    
}