package excelize

import (
	"bytes"
	"encoding/xml"
	"fmt"
	"path/filepath"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestRows(t *testing.T) {
	const sheet2 = "Sheet2"

	f, err := OpenFile(filepath.Join("test", "Book1.xlsx"))
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	rows, err := f.Rows(sheet2)
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	var collectedRows [][]string
	for rows.Next() {
		columns, err := rows.Columns()
		assert.NoError(t, err)
		collectedRows = append(collectedRows, trimSliceSpace(columns))
	}
	if !assert.NoError(t, rows.Error()) {
		t.FailNow()
	}
	assert.NoError(t, rows.Close())

	returnedRows, err := f.GetRows(sheet2)
	assert.NoError(t, err)
	for i := range returnedRows {
		returnedRows[i] = trimSliceSpace(returnedRows[i])
	}
	if !assert.Equal(t, collectedRows, returnedRows) {
		t.FailNow()
	}
	assert.NoError(t, f.Close())

	f.Pkg.Store("xl/worksheets/sheet1.xml", nil)
	_, err = f.Rows("Sheet1")
	assert.NoError(t, err)

	// Test reload the file to memory from system temporary directory.
	f, err = OpenFile(filepath.Join("test", "Book1.xlsx"), Options{UnzipXMLSizeLimit: 128})
	assert.NoError(t, err)
	value, err := f.GetCellValue("Sheet1", "A19")
	assert.NoError(t, err)
	assert.Equal(t, "Total:", value)
	// Test load shared string table to memory
	err = f.SetCellValue("Sheet1", "A19", "A19")
	assert.NoError(t, err)
	value, err = f.GetCellValue("Sheet1", "A19")
	assert.NoError(t, err)
	assert.Equal(t, "A19", value)
	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestSetRow.xlsx")))
	assert.NoError(t, f.Close())
}

func TestRowsIterator(t *testing.T) {
	sheetName, rowCount, expectedNumRow := "Sheet2", 0, 11
	f, err := OpenFile(filepath.Join("test", "Book1.xlsx"))
	require.NoError(t, err)

	rows, err := f.Rows(sheetName)
	require.NoError(t, err)

	for rows.Next() {
		rowCount++
		require.True(t, rowCount <= expectedNumRow, "rowCount is greater than expected")
	}
	assert.Equal(t, expectedNumRow, rowCount)
	assert.NoError(t, rows.Close())
	assert.NoError(t, f.Close())

	// Valued cell sparse distribution test
	f, sheetName, rowCount, expectedNumRow = NewFile(), "Sheet1", 0, 3
	cells := []string{"C1", "E1", "A3", "B3", "C3", "D3", "E3"}
	for _, cell := range cells {
		assert.NoError(t, f.SetCellValue(sheetName, cell, 1))
	}
	rows, err = f.Rows(sheetName)
	require.NoError(t, err)
	for rows.Next() {
		rowCount++
		require.True(t, rowCount <= expectedNumRow, "rowCount is greater than expected")
	}
	assert.Equal(t, expectedNumRow, rowCount)
}

func TestRowsGetRowOpts(t *testing.T) {
	sheetName := "Sheet2"
	expectedRowStyleID1 := RowOpts{Height: 17.0, Hidden: false, StyleID: 1}
	expectedRowStyleID2 := RowOpts{Height: 17.0, Hidden: false, StyleID: 0}
	expectedRowStyleID3 := RowOpts{Height: 17.0, Hidden: false, StyleID: 2}
	f, err := OpenFile(filepath.Join("test", "Book1.xlsx"))
	require.NoError(t, err)

	rows, err := f.Rows(sheetName)
	require.NoError(t, err)

	assert.Equal(t, true, rows.Next())
	_, err = rows.Columns()
	require.NoError(t, err)
	rowOpts := rows.GetRowOpts()
	assert.Equal(t, expectedRowStyleID1, rowOpts)
	assert.Equal(t, true, rows.Next())
	rowOpts = rows.GetRowOpts()
	assert.Equal(t, expectedRowStyleID2, rowOpts)
	assert.Equal(t, true, rows.Next())
	_, err = rows.Columns()
	require.NoError(t, err)
	rowOpts = rows.GetRowOpts()
	assert.Equal(t, expectedRowStyleID3, rowOpts)
}

func TestRowsError(t *testing.T) {
	f, err := OpenFile(filepath.Join("test", "Book1.xlsx"))
	if !assert.NoError(t, err) {
		t.FailNow()
	}
	_, err = f.Rows("SheetN")
	assert.EqualError(t, err, "sheet SheetN does not exist")
	assert.NoError(t, f.Close())
}

func TestRowHeight(t *testing.T) {
	f := NewFile()
	sheet1 := f.GetSheetName(0)

	assert.EqualError(t, f.SetRowHeight(sheet1, 0, defaultRowHeightPixels+1.0), newInvalidRowNumberError(0).Error())

	_, err := f.GetRowHeight("Sheet1", 0)
	assert.EqualError(t, err, newInvalidRowNumberError(0).Error())

	assert.NoError(t, f.SetRowHeight(sheet1, 1, 111.0))
	height, err := f.GetRowHeight(sheet1, 1)
	assert.NoError(t, err)
	assert.Equal(t, 111.0, height)

	// Test set row height overflow max row height limit.
	assert.EqualError(t, f.SetRowHeight(sheet1, 4, MaxRowHeight+1), ErrMaxRowHeight.Error())

	// Test get row height that rows index over exists rows.
	height, err = f.GetRowHeight(sheet1, 5)
	assert.NoError(t, err)
	assert.Equal(t, defaultRowHeight, height)

	// Test get row height that rows heights haven't changed.
	height, err = f.GetRowHeight(sheet1, 3)
	assert.NoError(t, err)
	assert.Equal(t, defaultRowHeight, height)

	// Test set and get row height on not exists worksheet.
	assert.EqualError(t, f.SetRowHeight("SheetN", 1, 111.0), "sheet SheetN does not exist")
	_, err = f.GetRowHeight("SheetN", 3)
	assert.EqualError(t, err, "sheet SheetN does not exist")

	// Test get row height with custom default row height.
	assert.NoError(t, f.SetSheetProps(sheet1, &SheetPropsOptions{
		DefaultRowHeight: float64Ptr(30.0),
		CustomHeight:     boolPtr(true),
	}))
	height, err = f.GetRowHeight(sheet1, 100)
	assert.NoError(t, err)
	assert.Equal(t, 30.0, height)

	// Test set row height with custom default row height with prepare XML.
	assert.NoError(t, f.SetCellValue(sheet1, "A10", "A10"))

	f.NewSheet("Sheet2")
	assert.NoError(t, f.SetCellValue("Sheet2", "A2", true))
	height, err = f.GetRowHeight("Sheet2", 1)
	assert.NoError(t, err)
	assert.Equal(t, 15.0, height)

	err = f.SaveAs(filepath.Join("test", "TestRowHeight.xlsx"))
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	assert.Equal(t, 0.0, convertColWidthToPixels(0))
}

func TestColumns(t *testing.T) {
	f := NewFile()
	rows, err := f.Rows("Sheet1")
	assert.NoError(t, err)

	rows.decoder = f.xmlNewDecoder(bytes.NewReader([]byte(`<worksheet><sheetData><row r="2"><c r="A1" t="s"><v>1</v></c></row></sheetData></worksheet>`)))
	_, err = rows.Columns()
	assert.NoError(t, err)
	rows.decoder = f.xmlNewDecoder(bytes.NewReader([]byte(`<worksheet><sheetData><row r="2"><c r="A1" t="s"><v>1</v></c></row></sheetData></worksheet>`)))
	rows.curRow = 1
	_, err = rows.Columns()
	assert.NoError(t, err)

	rows.decoder = f.xmlNewDecoder(bytes.NewReader([]byte(`<worksheet><sheetData><row r="A"><c r="A1" t="s"><v>1</v></c></row><row r="A"><c r="2" t="str"><v>B</v></c></row></sheetData></worksheet>`)))
	assert.True(t, rows.Next())
	_, err = rows.Columns()
	assert.EqualError(t, err, `strconv.Atoi: parsing "A": invalid syntax`)

	rows.decoder = f.xmlNewDecoder(bytes.NewReader([]byte(`<worksheet><sheetData><row r="1"><c r="A1" t="s"><v>1</v></c></row><row r="A"><c r="2" t="str"><v>B</v></c></row></sheetData></worksheet>`)))
	_, err = rows.Columns()
	assert.NoError(t, err)

	rows.decoder = f.xmlNewDecoder(bytes.NewReader([]byte(`<worksheet><sheetData><row r="1"><c r="A" t="s"><v>1</v></c></row></sheetData></worksheet>`)))
	assert.True(t, rows.Next())
	_, err = rows.Columns()
	assert.EqualError(t, err, newCellNameToCoordinatesError("A", newInvalidCellNameError("A")).Error())

	// Test token is nil
	rows.decoder = f.xmlNewDecoder(bytes.NewReader(nil))
	_, err = rows.Columns()
	assert.NoError(t, err)
}

func TestSharedStringsReader(t *testing.T) {
	f := NewFile()
	f.Pkg.Store(defaultXMLPathSharedStrings, MacintoshCyrillicCharset)
	f.sharedStringsReader()
	si := xlsxSI{}
	assert.EqualValues(t, "", si.String())
}

func TestRowVisibility(t *testing.T) {
	f, err := prepareTestBook1()
	if !assert.NoError(t, err) {
		t.FailNow()
	}
	f.NewSheet("Sheet3")
	assert.NoError(t, f.SetRowVisible("Sheet3", 2, false))
	assert.NoError(t, f.SetRowVisible("Sheet3", 2, true))
	visible, err := f.GetRowVisible("Sheet3", 2)
	assert.Equal(t, true, visible)
	assert.NoError(t, err)
	visible, err = f.GetRowVisible("Sheet3", 25)
	assert.Equal(t, false, visible)
	assert.NoError(t, err)
	assert.EqualError(t, f.SetRowVisible("Sheet3", 0, true), newInvalidRowNumberError(0).Error())
	assert.EqualError(t, f.SetRowVisible("SheetN", 2, false), "sheet SheetN does not exist")

	visible, err = f.GetRowVisible("Sheet3", 0)
	assert.Equal(t, false, visible)
	assert.EqualError(t, err, newInvalidRowNumberError(0).Error())
	_, err = f.GetRowVisible("SheetN", 1)
	assert.EqualError(t, err, "sheet SheetN does not exist")

	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestRowVisibility.xlsx")))
}

func TestRemoveRow(t *testing.T) {
	f := NewFile()
	sheet1 := f.GetSheetName(0)
	r, err := f.workSheetReader(sheet1)
	assert.NoError(t, err)
	const (
		colCount = 10
		rowCount = 10
	)
	fillCells(f, sheet1, colCount, rowCount)

	assert.NoError(t, f.SetCellHyperLink(sheet1, "A5", "https://github.com/xuri/excelize", "External"))

	assert.EqualError(t, f.RemoveRow(sheet1, -1), newInvalidRowNumberError(-1).Error())

	assert.EqualError(t, f.RemoveRow(sheet1, 0), newInvalidRowNumberError(0).Error())

	assert.NoError(t, f.RemoveRow(sheet1, 4))
	if !assert.Len(t, r.SheetData.Row, rowCount-1) {
		t.FailNow()
	}

	assert.NoError(t, f.MergeCell(sheet1, "B3", "B5"))

	assert.NoError(t, f.RemoveRow(sheet1, 2))
	if !assert.Len(t, r.SheetData.Row, rowCount-2) {
		t.FailNow()
	}

	assert.NoError(t, f.RemoveRow(sheet1, 4))
	if !assert.Len(t, r.SheetData.Row, rowCount-3) {
		t.FailNow()
	}

	err = f.AutoFilter(sheet1, "A2", "A2", `{"column":"A","expression":"x != blanks"}`)
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	assert.NoError(t, f.RemoveRow(sheet1, 1))
	if !assert.Len(t, r.SheetData.Row, rowCount-4) {
		t.FailNow()
	}

	assert.NoError(t, f.RemoveRow(sheet1, 2))
	if !assert.Len(t, r.SheetData.Row, rowCount-5) {
		t.FailNow()
	}

	assert.NoError(t, f.RemoveRow(sheet1, 1))
	if !assert.Len(t, r.SheetData.Row, rowCount-6) {
		t.FailNow()
	}

	assert.NoError(t, f.RemoveRow(sheet1, 10))
	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestRemoveRow.xlsx")))

	// Test remove row on not exist worksheet
	assert.EqualError(t, f.RemoveRow("SheetN", 1), `sheet SheetN does not exist`)
}

func TestInsertRows(t *testing.T) {
	f := NewFile()
	sheet1 := f.GetSheetName(0)
	r, err := f.workSheetReader(sheet1)
	assert.NoError(t, err)
	const (
		colCount = 10
		rowCount = 10
	)
	fillCells(f, sheet1, colCount, rowCount)

	assert.NoError(t, f.SetCellHyperLink(sheet1, "A5", "https://github.com/xuri/excelize", "External"))

	assert.NoError(t, f.InsertRows(sheet1, 1, 1))
	if !assert.Len(t, r.SheetData.Row, rowCount+1) {
		t.FailNow()
	}

	assert.NoError(t, f.InsertRows(sheet1, 4, 1))
	if !assert.Len(t, r.SheetData.Row, rowCount+2) {
		t.FailNow()
	}

	assert.NoError(t, f.InsertRows(sheet1, 4, 2))
	if !assert.Len(t, r.SheetData.Row, rowCount+4) {
		t.FailNow()
	}

	assert.EqualError(t, f.InsertRows(sheet1, -1, 1), newInvalidRowNumberError(-1).Error())
	assert.EqualError(t, f.InsertRows(sheet1, 0, 1), newInvalidRowNumberError(0).Error())
	assert.EqualError(t, f.InsertRows(sheet1, 4, 0), ErrParameterInvalid.Error())
	assert.EqualError(t, f.InsertRows(sheet1, 4, TotalRows), ErrMaxRows.Error())
	assert.EqualError(t, f.InsertRows(sheet1, 4, TotalRows-5), ErrMaxRows.Error())
	assert.EqualError(t, f.InsertRows(sheet1, TotalRows, 1), ErrMaxRows.Error())

	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestInsertRows.xlsx")))
}

// Test internal structure state after insert operations. It is important
// for insert workflow to be constant to avoid side effect with functions
// related to internal structure.
func TestInsertRowsInEmptyFile(t *testing.T) {
	f := NewFile()
	sheet1 := f.GetSheetName(0)
	r, err := f.workSheetReader(sheet1)
	assert.NoError(t, err)
	assert.NoError(t, f.InsertRows(sheet1, 1, 1))
	assert.Len(t, r.SheetData.Row, 0)
	assert.NoError(t, f.InsertRows(sheet1, 2, 1))
	assert.Len(t, r.SheetData.Row, 0)
	assert.NoError(t, f.InsertRows(sheet1, 99, 1))
	assert.Len(t, r.SheetData.Row, 0)
	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestInsertRowInEmptyFile.xlsx")))
}

func TestDuplicateRowFromSingleRow(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	t.Run("FromSingleRow", func(t *testing.T) {
		f := NewFile()
		assert.NoError(t, f.SetCellStr(sheet, "A1", cells["A1"]))
		assert.NoError(t, f.SetCellStr(sheet, "B1", cells["B1"]))

		assert.NoError(t, f.DuplicateRow(sheet, 1))
		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "FromSingleRow_1"))) {
			t.FailNow()
		}
		expect := map[string]string{
			"A1": cells["A1"], "B1": cells["B1"],
			"A2": cells["A1"], "B2": cells["B1"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}

		assert.NoError(t, f.DuplicateRow(sheet, 2))
		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "FromSingleRow_2"))) {
			t.FailNow()
		}
		expect = map[string]string{
			"A1": cells["A1"], "B1": cells["B1"],
			"A2": cells["A1"], "B2": cells["B1"],
			"A3": cells["A1"], "B3": cells["B1"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowUpdateDuplicatedRows(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	t.Run("UpdateDuplicatedRows", func(t *testing.T) {
		f := NewFile()
		assert.NoError(t, f.SetCellStr(sheet, "A1", cells["A1"]))
		assert.NoError(t, f.SetCellStr(sheet, "B1", cells["B1"]))

		assert.NoError(t, f.DuplicateRow(sheet, 1))

		assert.NoError(t, f.SetCellStr(sheet, "A2", cells["A2"]))
		assert.NoError(t, f.SetCellStr(sheet, "B2", cells["B2"]))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "UpdateDuplicatedRows"))) {
			t.FailNow()
		}
		expect := map[string]string{
			"A1": cells["A1"], "B1": cells["B1"],
			"A2": cells["A2"], "B2": cells["B2"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowFirstOfMultipleRows(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	newFileWithDefaults := func() *File {
		f := NewFile()
		for cell, val := range cells {
			assert.NoError(t, f.SetCellStr(sheet, cell, val))
		}
		return f
	}

	t.Run("FirstOfMultipleRows", func(t *testing.T) {
		f := newFileWithDefaults()

		assert.NoError(t, f.DuplicateRow(sheet, 1))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "FirstOfMultipleRows"))) {
			t.FailNow()
		}
		expect := map[string]string{
			"A1": cells["A1"], "B1": cells["B1"],
			"A2": cells["A1"], "B2": cells["B1"],
			"A3": cells["A2"], "B3": cells["B2"],
			"A4": cells["A3"], "B4": cells["B3"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowZeroWithNoRows(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	t.Run("ZeroWithNoRows", func(t *testing.T) {
		f := NewFile()

		assert.EqualError(t, f.DuplicateRow(sheet, 0), newInvalidRowNumberError(0).Error())

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "ZeroWithNoRows"))) {
			t.FailNow()
		}

		val, err := f.GetCellValue(sheet, "A1")
		assert.NoError(t, err)
		assert.Equal(t, "", val)
		val, err = f.GetCellValue(sheet, "B1")
		assert.NoError(t, err)
		assert.Equal(t, "", val)
		val, err = f.GetCellValue(sheet, "A2")
		assert.NoError(t, err)
		assert.Equal(t, "", val)
		val, err = f.GetCellValue(sheet, "B2")
		assert.NoError(t, err)
		assert.Equal(t, "", val)

		assert.NoError(t, err)
		expect := map[string]string{
			"A1": "", "B1": "",
			"A2": "", "B2": "",
		}

		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowMiddleRowOfEmptyFile(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	t.Run("MiddleRowOfEmptyFile", func(t *testing.T) {
		f := NewFile()

		assert.NoError(t, f.DuplicateRow(sheet, 99))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "MiddleRowOfEmptyFile"))) {
			t.FailNow()
		}
		expect := map[string]string{
			"A98":  "",
			"A99":  "",
			"A100": "",
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowWithLargeOffsetToMiddleOfData(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	newFileWithDefaults := func() *File {
		f := NewFile()
		for cell, val := range cells {
			assert.NoError(t, f.SetCellStr(sheet, cell, val))
		}
		return f
	}

	t.Run("WithLargeOffsetToMiddleOfData", func(t *testing.T) {
		f := newFileWithDefaults()

		assert.NoError(t, f.DuplicateRowTo(sheet, 1, 3))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "WithLargeOffsetToMiddleOfData"))) {
			t.FailNow()
		}
		expect := map[string]string{
			"A1": cells["A1"], "B1": cells["B1"],
			"A2": cells["A2"], "B2": cells["B2"],
			"A3": cells["A1"], "B3": cells["B1"],
			"A4": cells["A3"], "B4": cells["B3"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowWithLargeOffsetToEmptyRows(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	newFileWithDefaults := func() *File {
		f := NewFile()
		for cell, val := range cells {
			assert.NoError(t, f.SetCellStr(sheet, cell, val))
		}
		return f
	}

	t.Run("WithLargeOffsetToEmptyRows", func(t *testing.T) {
		f := newFileWithDefaults()

		assert.NoError(t, f.DuplicateRowTo(sheet, 1, 7))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "WithLargeOffsetToEmptyRows"))) {
			t.FailNow()
		}
		expect := map[string]string{
			"A1": cells["A1"], "B1": cells["B1"],
			"A2": cells["A2"], "B2": cells["B2"],
			"A3": cells["A3"], "B3": cells["B3"],
			"A7": cells["A1"], "B7": cells["B1"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowInsertBefore(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	newFileWithDefaults := func() *File {
		f := NewFile()
		for cell, val := range cells {
			assert.NoError(t, f.SetCellStr(sheet, cell, val))
		}
		return f
	}

	t.Run("InsertBefore", func(t *testing.T) {
		f := newFileWithDefaults()

		assert.NoError(t, f.DuplicateRowTo(sheet, 2, 1))
		assert.NoError(t, f.DuplicateRowTo(sheet, 10, 4))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "InsertBefore"))) {
			t.FailNow()
		}

		expect := map[string]string{
			"A1": cells["A2"], "B1": cells["B2"],
			"A2": cells["A1"], "B2": cells["B1"],
			"A3": cells["A2"], "B3": cells["B2"],
			"A5": cells["A3"], "B5": cells["B3"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v, cell) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowInsertBeforeWithLargeOffset(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	newFileWithDefaults := func() *File {
		f := NewFile()
		for cell, val := range cells {
			assert.NoError(t, f.SetCellStr(sheet, cell, val))
		}
		return f
	}

	t.Run("InsertBeforeWithLargeOffset", func(t *testing.T) {
		f := newFileWithDefaults()

		assert.NoError(t, f.DuplicateRowTo(sheet, 3, 1))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "InsertBeforeWithLargeOffset"))) {
			t.FailNow()
		}

		expect := map[string]string{
			"A1": cells["A3"], "B1": cells["B3"],
			"A2": cells["A1"], "B2": cells["B1"],
			"A3": cells["A2"], "B3": cells["B2"],
			"A4": cells["A3"], "B4": cells["B3"],
		}
		for cell, val := range expect {
			v, err := f.GetCellValue(sheet, cell)
			assert.NoError(t, err)
			if !assert.Equal(t, val, v) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowInsertBeforeWithMergeCells(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	newFileWithDefaults := func() *File {
		f := NewFile()
		for cell, val := range cells {
			assert.NoError(t, f.SetCellStr(sheet, cell, val))
		}
		assert.NoError(t, f.MergeCell(sheet, "B2", "C2"))
		assert.NoError(t, f.MergeCell(sheet, "C6", "C8"))
		return f
	}

	t.Run("InsertBeforeWithLargeOffset", func(t *testing.T) {
		f := newFileWithDefaults()

		assert.NoError(t, f.DuplicateRowTo(sheet, 2, 1))
		assert.NoError(t, f.DuplicateRowTo(sheet, 1, 8))

		if !assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, "InsertBeforeWithMergeCells"))) {
			t.FailNow()
		}

		expect := []MergeCell{
			{"B3:C3", "B2 Value"},
			{"C7:C10", ""},
			{"B1:C1", "B2 Value"},
		}

		mergeCells, err := f.GetMergeCells(sheet)
		assert.NoError(t, err)
		for idx, val := range expect {
			if !assert.Equal(t, val, mergeCells[idx]) {
				t.FailNow()
			}
		}
	})
}

func TestDuplicateRowInvalidRowNum(t *testing.T) {
	const sheet = "Sheet1"
	outFile := filepath.Join("test", "TestDuplicateRow.InvalidRowNum.%s.xlsx")

	cells := map[string]string{
		"A1": "A1 Value",
		"A2": "A2 Value",
		"A3": "A3 Value",
		"B1": "B1 Value",
		"B2": "B2 Value",
		"B3": "B3 Value",
	}

	invalidIndexes := []int{-100, -2, -1, 0}

	for _, row := range invalidIndexes {
		name := fmt.Sprintf("%d", row)
		t.Run(name, func(t *testing.T) {
			f := NewFile()
			for col, val := range cells {
				assert.NoError(t, f.SetCellStr(sheet, col, val))
			}

			assert.EqualError(t, f.DuplicateRow(sheet, row), newInvalidRowNumberError(row).Error())

			for col, val := range cells {
				v, err := f.GetCellValue(sheet, col)
				assert.NoError(t, err)
				if !assert.Equal(t, val, v) {
					t.FailNow()
				}
			}
			assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, name)))
		})
	}

	for _, row1 := range invalidIndexes {
		for _, row2 := range invalidIndexes {
			name := fmt.Sprintf("[%d,%d]", row1, row2)
			t.Run(name, func(t *testing.T) {
				f := NewFile()
				for col, val := range cells {
					assert.NoError(t, f.SetCellStr(sheet, col, val))
				}

				assert.EqualError(t, f.DuplicateRowTo(sheet, row1, row2), newInvalidRowNumberError(row1).Error())

				for col, val := range cells {
					v, err := f.GetCellValue(sheet, col)
					assert.NoError(t, err)
					if !assert.Equal(t, val, v) {
						t.FailNow()
					}
				}
				assert.NoError(t, f.SaveAs(fmt.Sprintf(outFile, name)))
			})
		}
	}
}

func TestDuplicateRowTo(t *testing.T) {
	f, sheetName := NewFile(), "Sheet1"
	// Test duplicate row with invalid target row number
	assert.Equal(t, nil, f.DuplicateRowTo(sheetName, 1, 0))
	// Test duplicate row with equal source and target row number
	assert.Equal(t, nil, f.DuplicateRowTo(sheetName, 1, 1))
	// Test duplicate row on the blank worksheet
	assert.Equal(t, nil, f.DuplicateRowTo(sheetName, 1, 2))
	// Test duplicate row on the worksheet with illegal cell reference
	f.Sheet.Store("xl/worksheets/sheet1.xml", &xlsxWorksheet{
		MergeCells: &xlsxMergeCells{Cells: []*xlsxMergeCell{{Ref: "A:B1"}}},
	})
	assert.EqualError(t, f.DuplicateRowTo(sheetName, 1, 2), newCellNameToCoordinatesError("A", newInvalidCellNameError("A")).Error())
	// Test duplicate row on not exists worksheet
	assert.EqualError(t, f.DuplicateRowTo("SheetN", 1, 2), "sheet SheetN does not exist")
}

func TestDuplicateMergeCells(t *testing.T) {
	f := File{}
	ws := &xlsxWorksheet{MergeCells: &xlsxMergeCells{
		Cells: []*xlsxMergeCell{{Ref: "A1:-"}},
	}}
	assert.EqualError(t, f.duplicateMergeCells("Sheet1", ws, 0, 0), `cannot convert cell "-" to coordinates: invalid cell name "-"`)
	ws.MergeCells.Cells[0].Ref = "A1:B1"
	assert.EqualError(t, f.duplicateMergeCells("SheetN", ws, 1, 2), "sheet SheetN does not exist")
}

func TestGetValueFromInlineStr(t *testing.T) {
	c := &xlsxC{T: "inlineStr"}
	f := NewFile()
	d := &xlsxSST{}
	val, err := c.getValueFrom(f, d, false)
	assert.NoError(t, err)
	assert.Equal(t, "", val)
}

func TestGetValueFromNumber(t *testing.T) {
	c := &xlsxC{T: "n"}
	f := NewFile()
	d := &xlsxSST{}
	for input, expected := range map[string]string{
		"2.2.":                     "2.2.",
		"1.1000000000000001":       "1.1",
		"2.2200000000000002":       "2.22",
		"28.552":                   "28.552",
		"27.399000000000001":       "27.399",
		"26.245999999999999":       "26.246",
		"2422.3000000000002":       "2422.3",
		"2.220000ddsf0000000002-r": "2.220000ddsf0000000002-r",
	} {
		c.V = input
		val, err := c.getValueFrom(f, d, false)
		assert.NoError(t, err)
		assert.Equal(t, expected, val)
	}
}

func TestErrSheetNotExistError(t *testing.T) {
	err := ErrSheetNotExist{SheetName: "Sheet1"}
	assert.EqualValues(t, err.Error(), "sheet Sheet1 does not exist")
}

func TestCheckRow(t *testing.T) {
	f := NewFile()
	f.Pkg.Store("xl/worksheets/sheet1.xml", []byte(xml.Header+`<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" ><sheetData><row r="2"><c><v>1</v></c><c r="F2"><v>2</v></c><c><v>3</v></c><c><v>4</v></c><c r="M2"><v>5</v></c></row></sheetData></worksheet>`))
	_, err := f.GetRows("Sheet1")
	assert.NoError(t, err)
	assert.NoError(t, f.SetCellValue("Sheet1", "A1", false))
	f = NewFile()
	f.Pkg.Store("xl/worksheets/sheet1.xml", []byte(xml.Header+`<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" ><sheetData><row r="2"><c><v>1</v></c><c r="-"><v>2</v></c><c><v>3</v></c><c><v>4</v></c><c r="M2"><v>5</v></c></row></sheetData></worksheet>`))
	f.Sheet.Delete("xl/worksheets/sheet1.xml")
	delete(f.checked, "xl/worksheets/sheet1.xml")
	assert.EqualError(t, f.SetCellValue("Sheet1", "A1", false), newCellNameToCoordinatesError("-", newInvalidCellNameError("-")).Error())
}

func TestSetRowStyle(t *testing.T) {
	f := NewFile()
	style1, err := f.NewStyle(`{"fill":{"type":"pattern","color":["#63BE7B"],"pattern":1}}`)
	assert.NoError(t, err)
	style2, err := f.NewStyle(`{"fill":{"type":"pattern","color":["#E0EBF5"],"pattern":1}}`)
	assert.NoError(t, err)
	assert.NoError(t, f.SetCellStyle("Sheet1", "B2", "B2", style1))
	assert.EqualError(t, f.SetRowStyle("Sheet1", 5, -1, style2), newInvalidRowNumberError(-1).Error())
	assert.EqualError(t, f.SetRowStyle("Sheet1", 1, TotalRows+1, style2), ErrMaxRows.Error())
	// Test set row style with invalid style ID.
	assert.EqualError(t, f.SetRowStyle("Sheet1", 1, 1, -1), newInvalidStyleID(-1).Error())
	// Test set row style with not exists style ID.
	assert.EqualError(t, f.SetRowStyle("Sheet1", 1, 1, 10), newInvalidStyleID(10).Error())
	assert.EqualError(t, f.SetRowStyle("SheetN", 1, 1, style2), "sheet SheetN does not exist")
	assert.NoError(t, f.SetRowStyle("Sheet1", 5, 1, style2))
	cellStyleID, err := f.GetCellStyle("Sheet1", "B2")
	assert.NoError(t, err)
	assert.Equal(t, style2, cellStyleID)
	// Test cell inheritance rows style
	assert.NoError(t, f.SetCellValue("Sheet1", "C1", nil))
	cellStyleID, err = f.GetCellStyle("Sheet1", "C1")
	assert.NoError(t, err)
	assert.Equal(t, style2, cellStyleID)
	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestSetRowStyle.xlsx")))
}

func TestNumberFormats(t *testing.T) {
	f, err := OpenFile(filepath.Join("test", "Book1.xlsx"))
	if !assert.NoError(t, err) {
		t.FailNow()
	}
	cells := make([][]string, 0)
	cols, err := f.Cols("Sheet2")
	if !assert.NoError(t, err) {
		t.FailNow()
	}
	for cols.Next() {
		col, err := cols.Rows()
		assert.NoError(t, err)
		if err != nil {
			break
		}
		cells = append(cells, col)
	}
	assert.Equal(t, []string{"", "200", "450", "200", "510", "315", "127", "89", "348", "53", "37"}, cells[3])
	assert.NoError(t, f.Close())

	f = NewFile()
	numFmt1, err := f.NewStyle(&Style{NumFmt: 1})
	assert.NoError(t, err)
	numFmt2, err := f.NewStyle(&Style{NumFmt: 2})
	assert.NoError(t, err)
	numFmt3, err := f.NewStyle(&Style{NumFmt: 3})
	assert.NoError(t, err)
	numFmt9, err := f.NewStyle(&Style{NumFmt: 9})
	assert.NoError(t, err)
	numFmt10, err := f.NewStyle(&Style{NumFmt: 10})
	assert.NoError(t, err)
	numFmt37, err := f.NewStyle(&Style{NumFmt: 37})
	assert.NoError(t, err)
	numFmt38, err := f.NewStyle(&Style{NumFmt: 38})
	assert.NoError(t, err)
	numFmt39, err := f.NewStyle(&Style{NumFmt: 39})
	assert.NoError(t, err)
	numFmt40, err := f.NewStyle(&Style{NumFmt: 40})
	assert.NoError(t, err)
	for _, cases := range [][]interface{}{
		{"A1", numFmt1, 8.8888666665555493e+19, "88888666665555500000"},
		{"A2", numFmt1, 8.8888666665555487, "9"},
		{"A3", numFmt2, 8.8888666665555493e+19, "88888666665555500000.00"},
		{"A4", numFmt2, 8.8888666665555487, "8.89"},
		{"A5", numFmt3, 8.8888666665555493e+19, "88,888,666,665,555,500,000"},
		{"A6", numFmt3, 8.8888666665555487, "9"},
		{"A7", numFmt3, 123, "123"},
		{"A8", numFmt3, -1234, "-1,234"},
		{"A9", numFmt9, 8.8888666665555493e+19, "8888866666555550000000%"},
		{"A10", numFmt9, -8.8888666665555493e+19, "-8888866666555550000000%"},
		{"A11", numFmt9, 8.8888666665555487, "889%"},
		{"A12", numFmt9, -8.8888666665555487, "-889%"},
		{"A13", numFmt10, 8.8888666665555493e+19, "8888866666555550000000.00%"},
		{"A14", numFmt10, -8.8888666665555493e+19, "-8888866666555550000000.00%"},
		{"A15", numFmt10, 8.8888666665555487, "888.89%"},
		{"A16", numFmt10, -8.8888666665555487, "-888.89%"},
		{"A17", numFmt37, 8.8888666665555493e+19, "88,888,666,665,555,500,000 "},
		{"A18", numFmt37, -8.8888666665555493e+19, "(88,888,666,665,555,500,000)"},
		{"A19", numFmt37, 8.8888666665555487, "9 "},
		{"A20", numFmt37, -8.8888666665555487, "(9)"},
		{"A21", numFmt38, 8.8888666665555493e+19, "88,888,666,665,555,500,000 "},
		{"A22", numFmt38, -8.8888666665555493e+19, "(88,888,666,665,555,500,000)"},
		{"A23", numFmt38, 8.8888666665555487, "9 "},
		{"A24", numFmt38, -8.8888666665555487, "(9)"},
		{"A25", numFmt39, 8.8888666665555493e+19, "88,888,666,665,555,500,000.00 "},
		{"A26", numFmt39, -8.8888666665555493e+19, "(88,888,666,665,555,500,000.00)"},
		{"A27", numFmt39, 8.8888666665555487, "8.89 "},
		{"A28", numFmt39, -8.8888666665555487, "(8.89)"},
		{"A29", numFmt40, 8.8888666665555493e+19, "88,888,666,665,555,500,000.00 "},
		{"A30", numFmt40, -8.8888666665555493e+19, "(88,888,666,665,555,500,000.00)"},
		{"A31", numFmt40, 8.8888666665555487, "8.89 "},
		{"A32", numFmt40, -8.8888666665555487, "(8.89)"},
	} {
		cell, styleID, value, expected := cases[0].(string), cases[1].(int), cases[2], cases[3].(string)
		assert.NoError(t, f.SetCellStyle("Sheet1", cell, cell, styleID))
		assert.NoError(t, f.SetCellValue("Sheet1", cell, value))
		result, err := f.GetCellValue("Sheet1", cell)
		assert.NoError(t, err)
		assert.Equal(t, expected, result)
	}
	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestNumberFormats.xlsx")))
}

func BenchmarkRows(b *testing.B) {
	f, _ := OpenFile(filepath.Join("test", "Book1.xlsx"))
	for i := 0; i < b.N; i++ {
		rows, _ := f.Rows("Sheet2")
		for rows.Next() {
			row, _ := rows.Columns()
			for i := range row {
				if i >= 0 {
					continue
				}
			}
		}
		if err := rows.Close(); err != nil {
			b.Error(err)
		}
	}
	if err := f.Close(); err != nil {
		b.Error(err)
	}
}

// trimSliceSpace trim continually blank element in the tail of slice.
func trimSliceSpace(s []string) []string {
	for {
		if len(s) > 0 && s[len(s)-1] == "" {
			s = s[:len(s)-1]
		} else {
			break
		}
	}
	return s
}