import jcifs.BaseTest;
import jcifs.Configuration;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.smb2.ServerMessageBlock2Response;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * Test class for Smb2OplockBreakNotification functionality
 */
@DisplayName("Smb2OplockBreakNotification Tests")
class Smb2OplockBreakNotificationTest extends BaseTest {

        bufferIndex += 8;
        this.changeTime = SMBUtil.readTime(buffer, bufferIndex);
        bufferIndex += 8;
        this.endOfFile = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;
        this.allocationSize = SMBUtil.readInt8(buffer, bufferIndex);
        bufferIndex += 8;
        this.extFileAttributes = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        final int start = bufferIndex;

        bufferIndex += 2; // reserved
        this.dataCompactionMode = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 4; // 2 reserved
        this.dataLength = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        this.dataOffset = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 12; // 10 reserved

        return bufferIndex - start;
    }

        final int start = bufferIndex;

        this.capabilities = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        System.arraycopy(buffer, bufferIndex, this.serverGuid, 0, 16);
        bufferIndex += 16;

        this.securityMode = SMBUtil.readInt2(buffer, bufferIndex);
        this.dialect = SMBUtil.readInt2(buffer, bufferIndex + 2);
        bufferIndex += 4;

        // Verify sid (2 bytes)
        assertEquals(TEST_SID, SMBUtil.readInt2(buffer, 0));

        // Verify maxItems (2 bytes)
        assertEquals(TEST_BATCH_COUNT, SMBUtil.readInt2(buffer, 2));

        // Verify informationLevel (2 bytes) - should be SMB_FILE_BOTH_DIRECTORY_INFO (0x104)
        assertEquals(Trans2FindFirst2.SMB_FILE_BOTH_DIRECTORY_INFO, SMBUtil.readInt2(buffer, 4));

        // Verify resumeKey (4 bytes)

        final int start = bufferIndex;
        final int structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if (structureSize != 16) {
            throw new SMBProtocolDecodingException("Structure size is not 16");
        }

        this.shareType = buffer[bufferIndex + 2];
        bufferIndex += 4;
        this.shareFlags = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // Server start time
        SMBUtil.writeTime(System.currentTimeMillis() - 3600000, buffer, offset + 48);

        // Security buffer offset and length
        SMBUtil.writeInt2(128, buffer, offset + 56); // Offset
        SMBUtil.writeInt2(0, buffer, offset + 58); // Length

        // Negotiate context offset
        SMBUtil.writeInt4(0, buffer, offset + 60);

        assertEquals(100, SMBUtil.readInt4(dst, 3));

        // Verify total data count (4 bytes at position 7)
        assertEquals(200, SMBUtil.readInt4(dst, 7));

        // Verify max parameter count (4 bytes at position 11)
        assertEquals(1024, SMBUtil.readInt4(dst, 11));

        // Verify max data count (4 bytes at position 15)
        assertEquals(2048, SMBUtil.readInt4(dst, 15));

        // Use SMBUtil to properly encode times in Windows FILETIME format
        SMBUtil.writeTime(TEST_CREATE_TIME, buffer, bufferIndex);
        SMBUtil.writeTime(TEST_LAST_ACCESS_TIME, buffer, bufferIndex + 8);
        SMBUtil.writeTime(TEST_LAST_WRITE_TIME, buffer, bufferIndex + 16);
        SMBUtil.writeTime(TEST_CHANGE_TIME, buffer, bufferIndex + 24);
        SMBUtil.writeInt4(TEST_ATTRIBUTES, buffer, bufferIndex + 32);

    }

    /**
     * Gets the flags as an integer value
     * @return flags
     */
    public int getFlags() {
        return SMBUtil.readInt4(this.getRaw(), 0);
    }

    private static byte[] encode(final int flags) {
        final byte[] raw = new byte[4];
        SMBUtil.writeInt4(flags, raw, 0);
        return raw;
    }