/* ====================================================================
   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.poi.hssf.usermodel;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.model.Sheet;
import org.apache.poi.hssf.record.NameRecord;
import org.apache.poi.hssf.record.Record;
import org.apache.poi.hssf.record.RecordFormatException;
import org.apache.poi.hssf.record.RecordInputStream;
import org.apache.poi.hssf.record.formula.Area3DPtg;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.TempFile;
/**
 *
 */
public final class TestHSSFWorkbook extends TestCase {
    private static HSSFWorkbook openSample(String sampleFileName) {
        return HSSFTestDataSamples.openSampleWorkbook(sampleFileName);
    }

    public void testSetRepeatingRowsAndColumns() {
        // Test bug 29747
        HSSFWorkbook b = new HSSFWorkbook( );
        b.createSheet();
        b.createSheet();
        b.createSheet();
        b.setRepeatingRowsAndColumns( 2, 0,1,-1,-1 );
        NameRecord nameRecord = b.getWorkbook().getNameRecord( 0 );
        assertEquals(3, nameRecord.getSheetNumber());
    }

    public void testCaseInsensitiveNames() {
        HSSFWorkbook b = new HSSFWorkbook( );
        HSSFSheet originalSheet = b.createSheet("Sheet1");
        HSSFSheet fetchedSheet = b.getSheet("sheet1");
        if(fetchedSheet == null) {
            throw new AssertionFailedError("Identified bug 44892");
        }
        assertEquals(originalSheet, fetchedSheet);
        try {
            b.createSheet("sHeeT1");
            fail("should have thrown exceptiuon due to duplicate sheet name");
        } catch (IllegalArgumentException e) {
            // expected during successful test
            assertEquals("The workbook already contains a sheet of this name", e.getMessage());
        }
    }

    public void testDuplicateNames() {
        HSSFWorkbook b = new HSSFWorkbook( );
        b.createSheet("Sheet1");
        b.createSheet();
        b.createSheet("name1");
        try
        {
            b.createSheet("name1");
            fail();
        }
        catch ( IllegalArgumentException pass )
        {
        }
        b.createSheet();
        try
        {
            b.setSheetName( 3,  "name1" );
            fail();
        }
        catch ( IllegalArgumentException pass )
        {
        }

        try
        {
            b.setSheetName( 3,  "name1" );
            fail();
        }
        catch ( IllegalArgumentException pass )
        {
        }

        b.setSheetName( 3,  "name2" );
        b.setSheetName( 3,  "name2" );
        b.setSheetName( 3,  "name2" );

        HSSFWorkbook c = new HSSFWorkbook( );
        c.createSheet("Sheet1");
        c.createSheet("Sheet2");
        c.createSheet("Sheet3");
        c.createSheet("Sheet4");

    }

    public void testWindowOneDefaults() {
        HSSFWorkbook b = new HSSFWorkbook( );
        try {
            assertEquals(b.getActiveSheetIndex(), 0);
            assertEquals(b.getFirstVisibleTab(), 0);
        } catch (NullPointerException npe) {
            fail("WindowOneRecord in Workbook is probably not initialized");
        }
    }

    public void testSheetSelection() {
        HSSFWorkbook b = new HSSFWorkbook();
        b.createSheet("Sheet One");
        b.createSheet("Sheet Two");
        b.setActiveSheet(1);
        b.setSelectedTab(1);
        b.setFirstVisibleTab(1);
        assertEquals(1, b.getActiveSheetIndex());
        assertEquals(1, b.getFirstVisibleTab());
    }

    public void testSheetClone() {
        // First up, try a simple file
        HSSFWorkbook b = new HSSFWorkbook();
        assertEquals(0, b.getNumberOfSheets());
        b.createSheet("Sheet One");
        b.createSheet("Sheet Two");

        assertEquals(2, b.getNumberOfSheets());
        b.cloneSheet(0);
        assertEquals(3, b.getNumberOfSheets());

        // Now try a problem one with drawing records in it
        b = openSample("SheetWithDrawing.xls");
        assertEquals(1, b.getNumberOfSheets());
        b.cloneSheet(0);
        assertEquals(2, b.getNumberOfSheets());
    }

    public void testReadWriteWithCharts() {
        HSSFWorkbook b;
        HSSFSheet s;

        // Single chart, two sheets
        b = openSample("44010-SingleChart.xls");
        assertEquals(2, b.getNumberOfSheets());
        assertEquals("Graph2", b.getSheetName(1));
        s = b.getSheetAt(1);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(8, s.getLastRowNum());

        // Has chart on 1st sheet??
        // FIXME
        assertNotNull(b.getSheetAt(0).getDrawingPatriarch());
        assertNull(b.getSheetAt(1).getDrawingPatriarch());
        assertFalse(b.getSheetAt(0).getDrawingPatriarch().containsChart());

        // We've now called getDrawingPatriarch() so
        //  everything will be all screwy
        // So, start again
        b = openSample("44010-SingleChart.xls");

        b = writeRead(b);
        assertEquals(2, b.getNumberOfSheets());
        s = b.getSheetAt(1);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(8, s.getLastRowNum());


        // Two charts, three sheets
        b = openSample("44010-TwoCharts.xls");
        assertEquals(3, b.getNumberOfSheets());

        s = b.getSheetAt(1);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(8, s.getLastRowNum());
        s = b.getSheetAt(2);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(8, s.getLastRowNum());

        // Has chart on 1st sheet??
        // FIXME
        assertNotNull(b.getSheetAt(0).getDrawingPatriarch());
        assertNull(b.getSheetAt(1).getDrawingPatriarch());
        assertNull(b.getSheetAt(2).getDrawingPatriarch());
        assertFalse(b.getSheetAt(0).getDrawingPatriarch().containsChart());

        // We've now called getDrawingPatriarch() so
        //  everything will be all screwy
        // So, start again
        b = openSample("44010-TwoCharts.xls");

        b = writeRead(b);
        assertEquals(3, b.getNumberOfSheets());

        s = b.getSheetAt(1);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(8, s.getLastRowNum());
        s = b.getSheetAt(2);
        assertEquals(0, s.getFirstRowNum());
        assertEquals(8, s.getLastRowNum());
    }

    private static HSSFWorkbook writeRead(HSSFWorkbook b) {
        return HSSFTestDataSamples.writeOutAndReadBack(b);
    }


    public void testSelectedSheet_bug44523() {
        HSSFWorkbook wb=new HSSFWorkbook();
        HSSFSheet sheet1 = wb.createSheet("Sheet1");
        HSSFSheet sheet2 = wb.createSheet("Sheet2");
        HSSFSheet sheet3 = wb.createSheet("Sheet3");
        HSSFSheet sheet4 = wb.createSheet("Sheet4");

        confirmActiveSelected(sheet1, true);
        confirmActiveSelected(sheet2, false);
        confirmActiveSelected(sheet3, false);
        confirmActiveSelected(sheet4, false);

        wb.setSelectedTab(1);

        // Demonstrate bug 44525:
        // Well... not quite, since isActive + isSelected were also added in the same bug fix
        if (sheet1.isSelected()) {
            throw new AssertionFailedError("Identified bug 44523 a");
        }
        wb.setActiveSheet(1);
        if (sheet1.isActive()) {
            throw new AssertionFailedError("Identified bug 44523 b");
        }

        confirmActiveSelected(sheet1, false);
        confirmActiveSelected(sheet2, true);
        confirmActiveSelected(sheet3, false);
        confirmActiveSelected(sheet4, false);
    }

    public void testSelectMultiple() {
        HSSFWorkbook wb=new HSSFWorkbook();
        HSSFSheet sheet1 = wb.createSheet("Sheet1");
        HSSFSheet sheet2 = wb.createSheet("Sheet2");
        HSSFSheet sheet3 = wb.createSheet("Sheet3");
        HSSFSheet sheet4 = wb.createSheet("Sheet4");
        HSSFSheet sheet5 = wb.createSheet("Sheet5");
        HSSFSheet sheet6 = wb.createSheet("Sheet6");

        wb.setSelectedTabs(new int[] { 0, 2, 3});

        assertEquals(true, sheet1.isSelected());
        assertEquals(false, sheet2.isSelected());
        assertEquals(true, sheet3.isSelected());
        assertEquals(true, sheet4.isSelected());
        assertEquals(false, sheet5.isSelected());
        assertEquals(false, sheet6.isSelected());

        wb.setSelectedTabs(new int[] { 1, 3, 5});

        assertEquals(false, sheet1.isSelected());
        assertEquals(true, sheet2.isSelected());
        assertEquals(false, sheet3.isSelected());
        assertEquals(true, sheet4.isSelected());
        assertEquals(false, sheet5.isSelected());
        assertEquals(true, sheet6.isSelected());

        assertEquals(true, sheet1.isActive());
        assertEquals(false, sheet2.isActive());


        assertEquals(true, sheet1.isActive());
        assertEquals(false, sheet3.isActive());
        wb.setActiveSheet(2);
        assertEquals(false, sheet1.isActive());
        assertEquals(true, sheet3.isActive());

        if (false) { // helpful if viewing this workbook in excel:
            sheet1.createRow(0).createCell(0).setCellValue(new HSSFRichTextString("Sheet1"));
            sheet2.createRow(0).createCell(0).setCellValue(new HSSFRichTextString("Sheet2"));
            sheet3.createRow(0).createCell(0).setCellValue(new HSSFRichTextString("Sheet3"));
            sheet4.createRow(0).createCell(0).setCellValue(new HSSFRichTextString("Sheet4"));

            try {
                File fOut = TempFile.createTempFile("sheetMultiSelect", ".xls");
                FileOutputStream os = new FileOutputStream(fOut);
                wb.write(os);
                os.close();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
    }


    public void testActiveSheetAfterDelete_bug40414() {
        HSSFWorkbook wb=new HSSFWorkbook();
        HSSFSheet sheet0 = wb.createSheet("Sheet0");
        HSSFSheet sheet1 = wb.createSheet("Sheet1");
        HSSFSheet sheet2 = wb.createSheet("Sheet2");
        HSSFSheet sheet3 = wb.createSheet("Sheet3");
        HSSFSheet sheet4 = wb.createSheet("Sheet4");

        // confirm default activation/selection
        confirmActiveSelected(sheet0, true);
        confirmActiveSelected(sheet1, false);
        confirmActiveSelected(sheet2, false);
        confirmActiveSelected(sheet3, false);
        confirmActiveSelected(sheet4, false);

        wb.setActiveSheet(3);
        wb.setSelectedTab(3);

        confirmActiveSelected(sheet0, false);
        confirmActiveSelected(sheet1, false);
        confirmActiveSelected(sheet2, false);
        confirmActiveSelected(sheet3, true);
        confirmActiveSelected(sheet4, false);

        wb.removeSheetAt(3);
        // after removing the only active/selected sheet, another should be active/selected in its place
        if (!sheet4.isSelected()) {
            throw new AssertionFailedError("identified bug 40414 a");
        }
        if (!sheet4.isActive()) {
            throw new AssertionFailedError("identified bug 40414 b");
        }

        confirmActiveSelected(sheet0, false);
        confirmActiveSelected(sheet1, false);
        confirmActiveSelected(sheet2, false);
        confirmActiveSelected(sheet4, true);

        sheet3 = sheet4; // re-align local vars in this test case

        // Some more cases of removing sheets

        // Starting with a multiple selection, and different active sheet
        wb.setSelectedTabs(new int[] { 1, 3, });
        wb.setActiveSheet(2);
        confirmActiveSelected(sheet0, false, false);
        confirmActiveSelected(sheet1, false, true);
        confirmActiveSelected(sheet2, true,  false);
        confirmActiveSelected(sheet3, false, true);

        // removing a sheet that is not active, and not the only selected sheet
        wb.removeSheetAt(3);
        confirmActiveSelected(sheet0, false, false);
        confirmActiveSelected(sheet1, false, true);
        confirmActiveSelected(sheet2, true,  false);

        // removing the only selected sheet
        wb.removeSheetAt(1);
        confirmActiveSelected(sheet0, false, false);
        confirmActiveSelected(sheet2, true,  true);

        // The last remaining sheet should always be active+selected
        wb.removeSheetAt(1);
        confirmActiveSelected(sheet0, true,  true);
    }

    private static void confirmActiveSelected(HSSFSheet sheet, boolean expected) {
        confirmActiveSelected(sheet, expected, expected);
    }


    private static void confirmActiveSelected(HSSFSheet sheet,
            boolean expectedActive, boolean expectedSelected) {
        assertEquals("active", expectedActive, sheet.isActive());
        assertEquals("selected", expectedSelected, sheet.isSelected());
    }
    
    /**
     * If Sheet.getSize() returns a different result to Sheet.serialize(), this will cause the BOF
     * records to be written with invalid offset indexes.  Excel does not like this, and such 
     * errors are particularly hard to track down.  This test ensures that HSSFWorkbook throws
     * a specific exception as soon as the situation is detected. See bugzilla 45066
     */
    public void testSheetSerializeSizeMismatch_bug45066() {
        HSSFWorkbook wb = new HSSFWorkbook();
        Sheet sheet = wb.createSheet("Sheet1").getSheet();
        List sheetRecords = sheet.getRecords();
        // one way (of many) to cause the discrepancy is with a badly behaved record:
        sheetRecords.add(new BadlyBehavedRecord());
        // There is also much logic inside Sheet that (if buggy) might also cause the discrepancy
        try {
            wb.getBytes();
            throw new AssertionFailedError("Identified bug 45066 a");
        } catch (IllegalStateException e) {
            // Expected badly behaved sheet record to cause exception
            assertTrue(e.getMessage().startsWith("Actual serialized sheet size"));
        }
    }
    
    /**
     * Checks that us and HSSFName play nicely with named ranges
     *  that point to deleted sheets
     */
    public void testNamesToDeleteSheets() throws Exception {
        HSSFWorkbook b = openSample("30978-deleted.xls");
        assertEquals(3, b.getNumberOfNames());
        
        // Sheet 2 is deleted
        assertEquals("Sheet1", b.getSheetName(0));
        assertEquals("Sheet3", b.getSheetName(1));
        
        Area3DPtg ptg;
        NameRecord nr;
        HSSFName n;
        
        /* ======= Name pointing to deleted sheet ====== */
        
        // First at low level
        nr = b.getWorkbook().getNameRecord(0);
        assertEquals("On2", nr.getNameText());
        assertEquals(0, nr.getSheetNumber());
        assertEquals(1, nr.getExternSheetNumber());
        assertEquals(1, nr.getNameDefinition().length);
        
        ptg = (Area3DPtg)nr.getNameDefinition()[0];
        assertEquals(1, ptg.getExternSheetIndex());
        assertEquals(0, ptg.getFirstColumn());
        assertEquals(0, ptg.getFirstRow());
        assertEquals(0, ptg.getLastColumn());
        assertEquals(2, ptg.getLastRow());
        
        // Now at high level
        n = b.getNameAt(0);
        assertEquals("On2", n.getNameName());
        assertEquals("", n.getSheetName());
        assertEquals("#REF!$A$1:$A$3", n.getReference());
        
        
        /* ======= Name pointing to 1st sheet ====== */
        
        // First at low level
        nr = b.getWorkbook().getNameRecord(1);
        assertEquals("OnOne", nr.getNameText());
        assertEquals(0, nr.getSheetNumber());
        assertEquals(0, nr.getExternSheetNumber());
        assertEquals(1, nr.getNameDefinition().length);
        
        ptg = (Area3DPtg)nr.getNameDefinition()[0];
        assertEquals(0, ptg.getExternSheetIndex());
        assertEquals(0, ptg.getFirstColumn());
        assertEquals(2, ptg.getFirstRow());
        assertEquals(0, ptg.getLastColumn());
        assertEquals(3, ptg.getLastRow());
        
        // Now at high level
        n = b.getNameAt(1);
        assertEquals("OnOne", n.getNameName());
        assertEquals("Sheet1", n.getSheetName());
        assertEquals("Sheet1!$A$3:$A$4", n.getReference());
        
        
        /* ======= Name pointing to 3rd sheet ====== */
        
        // First at low level
        nr = b.getWorkbook().getNameRecord(2);
        assertEquals("OnSheet3", nr.getNameText());
        assertEquals(0, nr.getSheetNumber());
        assertEquals(2, nr.getExternSheetNumber());
        assertEquals(1, nr.getNameDefinition().length);
        
        ptg = (Area3DPtg)nr.getNameDefinition()[0];
        assertEquals(2, ptg.getExternSheetIndex());
        assertEquals(0, ptg.getFirstColumn());
        assertEquals(0, ptg.getFirstRow());
        assertEquals(0, ptg.getLastColumn());
        assertEquals(1, ptg.getLastRow());
        
        // Now at high level
        n = b.getNameAt(2);
        assertEquals("OnSheet3", n.getNameName());
        assertEquals("Sheet3", n.getSheetName());
        assertEquals("Sheet3!$A$1:$A$2", n.getReference());
    }
    
    /**
     * result returned by getRecordSize() differs from result returned by serialize()
     */
    private static final class BadlyBehavedRecord extends Record {
        public BadlyBehavedRecord() {
            // 
        }
        public short getSid() {
            return 0x777;
        }
        public int serialize(int offset, byte[] data) {
            return 4;
        }
        public int getRecordSize() {
            return 8;
        }
    }
    
    /**
     * The sample file provided with bug 45582 seems to have one extra byte after the EOFRecord
     */
    public void testExtraDataAfterEOFRecord() {
        try {
            HSSFTestDataSamples.openSampleWorkbook("ex45582-22397.xls");
        } catch (RecordFormatException e) {
            if (e.getCause() instanceof LittleEndian.BufferUnderrunException) {
                throw new AssertionFailedError("Identified bug 45582");
            }
        }
    }
    
    /**
     * Test to make sure that NameRecord.getSheetNumber() is interpreted as a
     * 1-based sheet tab index (not a 1-based extern sheet index)
     */
    public void testFindBuiltInNameRecord() {
        // testRRaC has multiple (3) built-in name records
        // The second print titles name record has getSheetNumber()==4
        HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("testRRaC.xls");
        NameRecord nr;
        assertEquals(3, wb.getWorkbook().getNumNames());
        nr = wb.getWorkbook().getNameRecord(2);
        // TODO - render full row and full column refs properly
        assertEquals("Sheet2!$A$1:$IV$1", nr.getAreaReference(wb)); // 1:1
        
        try {
            wb.setRepeatingRowsAndColumns(3, 4, 5, 8, 11);
        } catch (RuntimeException e) {
            if (e.getMessage().equals("Builtin (7) already exists for sheet (4)")) {
                // there was a problem in the code which locates the existing print titles name record 
                throw new RuntimeException("Identified bug 45720b");
            }
            throw e;
        }
        wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
        assertEquals(3, wb.getWorkbook().getNumNames());
        nr = wb.getWorkbook().getNameRecord(2);
        assertEquals("Sheet2!E:F,Sheet2!$A$9:$IV$12", nr.getAreaReference(wb)); // E:F,9:12
    }
}