/*
 * 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.commons.compress;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertThrows;
import static org.junit.Assert.assertTrue;

import org.apache.commons.compress.archivers.sevenz.SevenZArchiveEntry;
import org.apache.commons.compress.utils.ArchiveUtils;
import org.junit.jupiter.api.Test;

public class ArchiveUtilsTest extends AbstractTestCase {

    private static final int bytesToTest = 50;
    private static final byte[] byteTest = new byte[bytesToTest];
    
    static {
        for (int i = 0; i < byteTest.length;) {
            byteTest[i] = (byte) i;
            byteTest[i + 1] = (byte) -i;
            i += 2;
        }
    }

    @Test
    public void testCompareBA() {
        final byte[] buffer1 = {1, 2, 3};
        final byte[] buffer2 = {1, 2, 3, 0};
        final byte[] buffer3 = {1, 2, 3};
        assertTrue(ArchiveUtils.isEqual(buffer1, buffer2, true));
        assertFalse(ArchiveUtils.isEqual(buffer1, buffer2, false));
        assertFalse(ArchiveUtils.isEqual(buffer1, buffer2));
        assertTrue(ArchiveUtils.isEqual(buffer2, buffer1, true));
        assertFalse(ArchiveUtils.isEqual(buffer2, buffer1, false));
        assertFalse(ArchiveUtils.isEqual(buffer2, buffer1));
        assertTrue(ArchiveUtils.isEqual(buffer1, buffer3));
        assertTrue(ArchiveUtils.isEqual(buffer3, buffer1));
    }

    @Test
    public void testCompareAscii() {
        final byte[] buffer1 = {'a', 'b', 'c'};
        final byte[] buffer2 = {'d', 'e', 'f', 0};
        assertTrue(ArchiveUtils.matchAsciiBuffer("abc", buffer1));
        assertFalse(ArchiveUtils.matchAsciiBuffer("abc\0", buffer1));
        assertTrue(ArchiveUtils.matchAsciiBuffer("def\0", buffer2));
        assertFalse(ArchiveUtils.matchAsciiBuffer("def", buffer2));
    }

    @Test
    public void testAsciiConversions() {
        asciiToByteAndBackOK("");
        asciiToByteAndBackOK("abcd");
        asciiToByteAndBackFail("\u8025");
    }

    @Test
    public void sanitizeShortensString() {
        // @formatter:off
        final String input = "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901234567890123456789012345678901234567890123456789";
        final String expected = "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901234567890123456789012345678901234567890123456789"
            + "012345678901...";
        // @formatter:on
        assertEquals(expected, ArchiveUtils.sanitize(input));
    }

    @Test
    public void sanitizeLeavesShortStringsAlone() {
        final String input = "012345678901234567890123456789012345678901234567890123456789";
        assertEquals(input, ArchiveUtils.sanitize(input));
    }

    @Test
    public void sanitizeRemovesUnprintableCharacters() {
        final String input = "\b12345678901234567890123456789012345678901234567890123456789";
        final String expected = "?12345678901234567890123456789012345678901234567890123456789";
        assertEquals(expected, ArchiveUtils.sanitize(input));
    }

    @Test
    public void testIsEqualWithNullWithPositive() {
        final byte[] byteArray = new byte[8];
        byteArray[1] = (byte) (-77);
        assertFalse(ArchiveUtils.isEqualWithNull(byteArray, 0, (byte) 0, byteArray, (byte) 0, (byte) 80));
    }

    @Test
    public void testToAsciiBytes() {
        final byte[] byteArray = ArchiveUtils.toAsciiBytes("SOCKET");
        assertArrayEquals(new byte[] {(byte) 83, (byte) 79, (byte) 67, (byte) 75, (byte) 69, (byte) 84}, byteArray);
        assertFalse(ArchiveUtils.isEqualWithNull(byteArray, 0, 46, byteArray, 63, 0));
    }

    @Test
    public void testToStringWithNonNull() {
        final SevenZArchiveEntry sevenZArchiveEntry = new SevenZArchiveEntry();
        final String string = ArchiveUtils.toString(sevenZArchiveEntry);
        assertEquals("-       0 null", string);
    }

    @Test
    public void testIsEqual() {
        assertTrue(ArchiveUtils.isEqual(null, 0, 0, null, 0, 0));
    }

    @Test
    public void testToAsciiStringThrowsStringIndexOutOfBoundsException() {
        final byte[] byteArray = new byte[3];
        assertThrows(StringIndexOutOfBoundsException.class, () -> ArchiveUtils.toAsciiString(byteArray, 940, 2730));
    }

    private void asciiToByteAndBackOK(final String inputString) {
        assertEquals(inputString, ArchiveUtils.toAsciiString(ArchiveUtils.toAsciiBytes(inputString)));
    }

    private void asciiToByteAndBackFail(final String inputString) {
        assertNotEquals(inputString, ArchiveUtils.toAsciiString(ArchiveUtils.toAsciiBytes(inputString)));
    }
}