/*   Copyright 2004 The Apache Software Foundation
 *
 *   Licensed 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 xmlcursor.checkin;

import org.apache.xmlbeans.XmlCursor;
import org.apache.xmlbeans.XmlCursor.TokenType;
import org.junit.jupiter.api.Test;
import xmlcursor.common.Common;

import static org.junit.jupiter.api.Assertions.*;
import static xmlcursor.common.BasicCursorTestCase.cur;
import static xmlcursor.common.BasicCursorTestCase.toNextTokenOfType;


public class ToPrevBookmarkTest {
    private static final SimpleBookmark _theBookmark = new SimpleBookmark("value");
    private static final SimpleBookmark _theBookmark1 = new SimpleBookmark("value1");
    private static final DifferentBookmark _difBookmark = new DifferentBookmark("diff");

    @Test
    void testToPrevBookmarkSameKey() throws Exception {
        try (XmlCursor m_xc = cur(Common.XML_FOO_TEXT)) {
            toNextTokenOfType(m_xc, TokenType.START);
            m_xc.setBookmark(_theBookmark);
            try (XmlCursor xc0 = m_xc.newCursor()) {
                toNextTokenOfType(m_xc, TokenType.END);
                m_xc.setBookmark(_theBookmark1);
                try (XmlCursor xc1 = m_xc.newCursor()) {
                    m_xc.toEndDoc();

                    assertEquals(_theBookmark1, m_xc.toPrevBookmark(SimpleBookmark.class));
                    assertTrue(m_xc.isAtSamePositionAs(xc1));
                    assertEquals(_theBookmark, m_xc.toPrevBookmark(SimpleBookmark.class));
                    assertTrue(m_xc.isAtSamePositionAs(xc0));
                    assertNull(m_xc.toPrevBookmark(SimpleBookmark.class));
                }
            }
        }
    }

    @Test
    void testToPrevBookmarkInvalidKey() throws Exception {
        try (XmlCursor m_xc = cur(Common.XML_FOO_TEXT)) {
            toNextTokenOfType(m_xc, TokenType.START);
            m_xc.setBookmark(_theBookmark);
            toNextTokenOfType(m_xc, TokenType.END);
            m_xc.setBookmark(_theBookmark1);
            m_xc.toEndDoc();
            assertNull(m_xc.toPrevBookmark(Object.class));
        }
    }

    @Test
    void testToPrevBookmarkDifferentKeys() throws Exception {
        try (XmlCursor m_xc = cur(Common.XML_FOO_TEXT)) {
            toNextTokenOfType(m_xc, TokenType.START);
            m_xc.setBookmark(_theBookmark);
            try (XmlCursor xc0 = m_xc.newCursor()) {
                toNextTokenOfType(m_xc, TokenType.END);
                m_xc.setBookmark(_difBookmark);

                try (XmlCursor xc1 = m_xc.newCursor()) {
                    m_xc.toEndDoc();

                    assertEquals(_difBookmark, m_xc.toPrevBookmark(DifferentBookmark.class));
                    assertTrue(m_xc.isAtSamePositionAs(xc1));
                    assertNull(m_xc.toPrevBookmark(DifferentBookmark.class));
                    assertEquals(_theBookmark, m_xc.toPrevBookmark(SimpleBookmark.class));
                    assertTrue(m_xc.isAtSamePositionAs(xc0));
                }
            }
        }
    }

    @Test
    void testToPrevBookmarkPostSetTextValue() throws Exception {
        try (XmlCursor m_xc = cur(Common.XML_FOO_TEXT)) {
            toNextTokenOfType(m_xc, TokenType.TEXT);
            m_xc.toNextChar(2);
            assertEquals("xt", m_xc.getChars());
            m_xc.setBookmark(_theBookmark);   // set bm in middle of TEXT
            try (XmlCursor xc1 = m_xc.newCursor()) {
                xc1.toEndDoc();
                m_xc.toPrevToken();
                m_xc.setTextValue("changed");  // changes text, should destroy bm
                m_xc.toEndDoc();

                assertNull(xc1.toPrevBookmark(SimpleBookmark.class));
                assertEquals(TokenType.ENDDOC, xc1.currentTokenType());
            }
        }
    }

    private static class SimpleBookmark extends XmlCursor.XmlBookmark {
        public String text;

        SimpleBookmark(String text) {
            this.text = text;
        }
    }

    private static class DifferentBookmark extends XmlCursor.XmlBookmark {
        public String text;

        DifferentBookmark(String text) {
            this.text = text;
        }
    }

}