package excelize

import (
	"fmt"
	"path/filepath"
	"strconv"
	"testing"

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

func TestRows(t *testing.T) {
	xlsx, err := OpenFile(filepath.Join("test", "Book1.xlsx"))
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	rows, err := xlsx.Rows("Sheet2")
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	rowStrs := make([][]string, 0)
	var i = 0
	for rows.Next() {
		i++
		columns := rows.Columns()
		rowStrs = append(rowStrs, columns)
	}

	if !assert.NoError(t, rows.Error()) {
		t.FailNow()
	}

	dstRows := xlsx.GetRows("Sheet2")
	if !assert.Equal(t, len(rowStrs), len(dstRows)) {
		t.FailNow()
	}

	for i := 0; i < len(rowStrs); i++ {
		if !assert.Equal(t, trimSliceSpace(dstRows[i]), trimSliceSpace(rowStrs[i])) {
			t.FailNow()
		}
	}

	r := Rows{}
	r.Columns()
}

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

func TestRowHeight(t *testing.T) {
	xlsx := NewFile()
	sheet1 := xlsx.GetSheetName(1)

	xlsx.SetRowHeight(sheet1, 0, defaultRowHeightPixels+1.0) // should no effect
	assert.Equal(t, defaultRowHeightPixels, xlsx.GetRowHeight("Sheet1", 0))

	xlsx.SetRowHeight(sheet1, 1, 111.0)
	assert.Equal(t, 111.0, xlsx.GetRowHeight(sheet1, 1))

	xlsx.SetRowHeight(sheet1, 4, 444.0)
	assert.Equal(t, 444.0, xlsx.GetRowHeight(sheet1, 4))

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

	convertColWidthToPixels(0)
}

func TestRemoveRow(t *testing.T) {
	xlsx := NewFile()
	sheet1 := xlsx.GetSheetName(1)
	r := xlsx.workSheetReader(sheet1)

	const (
		cellCount = 10
		rowCount  = 10
	)
	for j := 1; j <= cellCount; j++ {
		for i := 1; i <= rowCount; i++ {
			axis := ToAlphaString(i) + strconv.Itoa(j)
			xlsx.SetCellStr(sheet1, axis, axis)
		}
	}
	xlsx.SetCellHyperLink(sheet1, "A5", "https://github.com/360EntSecGroup-Skylar/excelize", "External")

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

	xlsx.RemoveRow(sheet1, 0)
	if !assert.Len(t, r.SheetData.Row, rowCount) {
		t.FailNow()
	}

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

	xlsx.MergeCell(sheet1, "B3", "B5")

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

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

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

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

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

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

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

func TestInsertRow(t *testing.T) {
	xlsx := NewFile()
	sheet1 := xlsx.GetSheetName(1)
	r := xlsx.workSheetReader(sheet1)

	const (
		cellCount = 10
		rowCount  = 10
	)
	for j := 1; j <= cellCount; j++ {
		for i := 1; i < rowCount; i++ {
			axis := ToAlphaString(i) + strconv.Itoa(j)
			xlsx.SetCellStr(sheet1, axis, axis)
		}
	}
	xlsx.SetCellHyperLink(sheet1, "A5", "https://github.com/360EntSecGroup-Skylar/excelize", "External")

	xlsx.InsertRow(sheet1, -1)
	if !assert.Len(t, r.SheetData.Row, rowCount) {
		t.FailNow()
	}

	xlsx.InsertRow(sheet1, 0)
	if !assert.Len(t, r.SheetData.Row, rowCount) {
		t.FailNow()
	}

	xlsx.InsertRow(sheet1, 1)
	if !assert.Len(t, r.SheetData.Row, rowCount+1) {
		t.FailNow()
	}

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

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

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

func TestDuplicateRow(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 {
			f.SetCellStr(sheet, cell, val)

		}
		return f
	}

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

		xlsx.DuplicateRow(sheet, 1)
		if !assert.NoError(t, xlsx.SaveAs(fmt.Sprintf(outFile, "TestDuplicateRow.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 {
			if !assert.Equal(t, val, xlsx.GetCellValue(sheet, cell), cell) {
				t.FailNow()
			}
		}

		xlsx.DuplicateRow(sheet, 2)
		if !assert.NoError(t, xlsx.SaveAs(fmt.Sprintf(outFile, "TestDuplicateRow.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 {
			if !assert.Equal(t, val, xlsx.GetCellValue(sheet, cell), cell) {
				t.FailNow()
			}
		}
	})

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

		xlsx.DuplicateRow(sheet, 1)

		xlsx.SetCellStr(sheet, "A2", cells["A2"])
		xlsx.SetCellStr(sheet, "B2", cells["B2"])

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

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

		xlsx.DuplicateRow(sheet, 1)

		if !assert.NoError(t, xlsx.SaveAs(fmt.Sprintf(outFile, "TestDuplicateRow.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 {
			if !assert.Equal(t, val, xlsx.GetCellValue(sheet, cell), cell) {
				t.FailNow()
			}
		}
	})

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

		xlsx.DuplicateRow(sheet, 0)

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

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

		xlsx.DuplicateRow(sheet, 99)

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

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

		xlsx.DuplicateRowTo(sheet, 1, 3)

		if !assert.NoError(t, xlsx.SaveAs(fmt.Sprintf(outFile, "TestDuplicateRow.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 {
			if !assert.Equal(t, val, xlsx.GetCellValue(sheet, cell), cell) {
				t.FailNow()
			}
		}
	})

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

		xlsx.DuplicateRowTo(sheet, 1, 7)

		if !assert.NoError(t, xlsx.SaveAs(fmt.Sprintf(outFile, "TestDuplicateRow.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 {
			if !assert.Equal(t, val, xlsx.GetCellValue(sheet, cell), cell) {
				t.FailNow()
			}
		}
	})

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

		xlsx.DuplicateRowTo(sheet, 2, 1)

		if !assert.NoError(t, xlsx.SaveAs(fmt.Sprintf(outFile, "TestDuplicateRow.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"],
			"A4": cells["A3"], "B4": cells["B3"],
		}
		for cell, val := range expect {
			if !assert.Equal(t, val, xlsx.GetCellValue(sheet, cell), cell) {
				t.FailNow()
			}
		}
	})

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

		xlsx.DuplicateRowTo(sheet, 3, 1)

		if !assert.NoError(t, xlsx.SaveAs(fmt.Sprintf(outFile, "TestDuplicateRow.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 {
			if !assert.Equal(t, val, xlsx.GetCellValue(sheet, cell)) {
				t.FailNow()
			}
		}
	})
}

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

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

	testRows := []int{-2, -1}

	testRowPairs := []struct {
		row1 int
		row2 int
	}{
		{-1, -1},
		{-1, 0},
		{-1, 1},
		{0, -1},
		{0, 0},
		{0, 1},
		{1, -1},
		{1, 1},
		{1, 0},
	}

	for i, row := range testRows {
		name := fmt.Sprintf("TestRow_%d", i+1)
		t.Run(name, func(t *testing.T) {
			xlsx := NewFile()
			for col, val := range cells {
				xlsx.SetCellStr(sheet, col, val)
			}
			xlsx.DuplicateRow(sheet, row)

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

	for i, pair := range testRowPairs {
		name := fmt.Sprintf("TestRowPair_%d", i+1)
		t.Run(name, func(t *testing.T) {
			xlsx := NewFile()
			for col, val := range cells {
				xlsx.SetCellStr(sheet, col, val)
			}
			xlsx.DuplicateRowTo(sheet, pair.row1, pair.row2)

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

func trimSliceSpace(s []string) []string {
	for {
		if len(s) > 0 && s[len(s)-1] == "" {
			s = s[:len(s)-1]
		} else {
			break
		}
	}
	return s
}