/*
      Copyright (C) 2002-2004 MySQL AB

      This program is free software; you can redistribute it and/or modify
      it under the terms of version 2 of the GNU General Public License as 
      published by the Free Software Foundation.

      There are special exceptions to the terms and conditions of the GPL 
      as it is applied to this software. View the full text of the 
      exception in file EXCEPTIONS-CONNECTOR-J in the directory of this 
      software distribution.

      This program is distributed in the hope that it will be useful,
      but WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      GNU General Public License for more details.

      You should have received a copy of the GNU General Public License
      along with this program; if not, write to the Free Software
      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



 */
package testsuite.simple;

import testsuite.BaseTestCase;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Properties;


/**
 * Tests BLOB functionality in the driver.
 *
 * @author  Mark Matthews
 * @version $Id: BlobTest.java,v 1.12.4.12 2004/12/02 20:52:55 mmatthew Exp $
 */
public class BlobTest extends BaseTestCase {
    //~ Static fields/initializers ---------------------------------------------

    private static File testBlobFile;
    
    //~ Constructors -----------------------------------------------------------

    /**
     * Creates a new BlobTest object.
     *
     * @param name the test to run
     */
    public BlobTest(String name) {
        super(name);
    }

    //~ Methods ----------------------------------------------------------------

    /**
     * Runs all test cases in this test suite
     *
     * @param args
     */
    public static void main(String[] args) {
        junit.textui.TestRunner.run(BlobTest.class);
    }

    /**
     * Setup the test case
     *
     * @throws Exception if an error occurs
     */
    public void setUp() throws Exception {
        super.setUp();
        
        if (versionMeetsMinimum(4, 0)) {
        	int requiredSize = 32 * 1024 * 1024;
        	
        	if (testBlobFile == null || testBlobFile.length() != requiredSize) {
        		createBlobFile(requiredSize);
        	}

        } else {
        	int requiredSize = 8 * 1024 * 1024;
        	
        	if (testBlobFile == null || testBlobFile.length() != requiredSize) {
        		createBlobFile(requiredSize);
        	}
        }
       
        createTestTable();
    }

    /**
     * Destroy resources created by test case
     *
     * @throws Exception if an error occurs
     */
    public void tearDown() throws Exception {
        try {
        	this.stmt.executeUpdate("DROP TABLE IF EXISTS BLOBTEST");
        } finally {
            super.tearDown();
        }
    }

    /**
     * Tests inserting blob data as a stream
     *
     * @throws Exception if an error occurs
     */
    public void testByteStreamInsert() throws Exception {
        BufferedInputStream bIn = new BufferedInputStream(new FileInputStream(testBlobFile));
        this.pstmt = this.conn.prepareStatement(
                "INSERT INTO BLOBTEST(blobdata) VALUES (?)");
        this.pstmt.setBinaryStream(1, bIn, (int)testBlobFile.length());
        this.pstmt.execute();

        this.pstmt.clearParameters();
        doRetrieval();
    }

    /**
     * Tests multi-packet functionality with NIO layer.
     * 
     * @throws Exception if an unexpected error occurs.
     */
    public void testBytesInsertNewIo() throws Exception {
    	Properties props = new Properties();
    	props.setProperty("useNewIO", "true");
    	
    	this.conn = getConnectionWithProps(props);
    	
    	testByteStreamInsert();
    }

    private boolean checkBlob(byte[] retrBytes) throws Exception {
        boolean passed = false;
        BufferedInputStream bIn = new BufferedInputStream(new FileInputStream(testBlobFile));
        
        try {
        int fileLength = (int)testBlobFile.length();
        if (retrBytes.length == fileLength) {
            for (int i = 0; i < fileLength; i++) {
            	byte fromFile = (byte)(bIn.read() & 0xff);
            	
                if (retrBytes[i] != fromFile) {
                    passed = false;
                    System.out.println("Byte pattern differed at position " + i
                        + " , " + retrBytes[i] + " != " + fromFile);

                    for (int j = 0; (j < (i + 10)) /*&& (j < i)*/; j++) {
                        System.out.print(Integer.toHexString(retrBytes[j] & 0xff)
                            + " ");
                    }


                    break;
                }

                passed = true;
            }
        } else {
            passed = false;
            System.out.println("retrBytes.length(" + retrBytes.length
                + ") != testBlob.length(" + fileLength + ")");
        }

        return passed;
        } finally {
        	if (bIn != null) {
        		bIn.close();
        	}
        }
    }

    private void createTestTable() throws Exception {
        //
        // Catch the error, the table might exist
        //
        try {
        	this.stmt.executeUpdate("DROP TABLE BLOBTEST");
        } catch (SQLException SQLE) {
            ;
        }

        this.stmt.executeUpdate(
            "CREATE TABLE BLOBTEST (pos int PRIMARY KEY auto_increment, "
            + "blobdata LONGBLOB)");
    }

	/**
	 * Mark this as deprecated to avoid warnings from compiler...
	 * 
	 * @deprecated
	 * 
	 * @throws Exception if an error occurs retrieving the value
	 */
    private void doRetrieval() throws Exception {
        boolean passed = false;
        this.rs = this.stmt.executeQuery(
                "SELECT blobdata from BLOBTEST LIMIT 1");
        this.rs.next();

        byte[] retrBytes = this.rs.getBytes(1);
        passed = checkBlob(retrBytes);
        assertTrue("Inserted BLOB data did not match retrieved BLOB data for getBytes().",
            passed);
        retrBytes = this.rs.getBlob(1).getBytes(1L, (int) this.rs.getBlob(1).length());
        passed = checkBlob(retrBytes);
        assertTrue("Inserted BLOB data did not match retrieved BLOB data for getBlob().",
            passed);

        InputStream inStr = this.rs.getBinaryStream(1);
        ByteArrayOutputStream bOut = new ByteArrayOutputStream();
        int b;

        while ((b = inStr.read()) != -1) {
            bOut.write((byte) b);
        }

        retrBytes = bOut.toByteArray();
        passed = checkBlob(retrBytes);
        assertTrue("Inserted BLOB data did not match retrieved BLOB data for getBinaryStream().",
            passed);
        inStr = this.rs.getAsciiStream(1);
        bOut = new ByteArrayOutputStream();

        while ((b = inStr.read()) != -1) {
            bOut.write((byte) b);
        }

        retrBytes = bOut.toByteArray();
        passed = checkBlob(retrBytes);
        assertTrue("Inserted BLOB data did not match retrieved BLOB data for getAsciiStream().",
            passed);
        inStr = this.rs.getUnicodeStream(1);
        bOut = new ByteArrayOutputStream();

        while ((b = inStr.read()) != -1) {
            bOut.write((byte) b);
        }

        retrBytes = bOut.toByteArray();
        passed = checkBlob(retrBytes);
        assertTrue("Inserted BLOB data did not match retrieved BLOB data for getUnicodeStream().",
            passed);
    }
    
    private void createBlobFile(int size) throws Exception {
    	if (testBlobFile != null && testBlobFile.length() != size) {
    		testBlobFile.delete();
    	}
    	
    	testBlobFile = File.createTempFile("testblob", ".dat");
    	testBlobFile.deleteOnExit();
    	
    	BufferedOutputStream bOut = new BufferedOutputStream(new FileOutputStream(testBlobFile));
    	
    	int dataRange = Byte.MAX_VALUE - Byte.MIN_VALUE;
    	 
    	for (int i = 0; i < size; i++) {
            bOut.write((byte) ((Math.random() * dataRange) + Byte.MIN_VALUE));
        }
    	
    	bOut.flush();
    	bOut.close();
    }
}