// Copyright 2016 - 2023 The excelize Authors. All rights reserved. Use of
// this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
//
// Package excelize providing a set of functions that allow you to write to and
// read from XLAM / XLSM / XLSX / XLTM / XLTX files. Supports reading and
// writing spreadsheet documents generated by Microsoft Excel™ 2007 and later.
// Supports complex components by high compatibility, and provided streaming
// API for generating or reading data from a worksheet with huge amounts of
// data. This library needs Go version 1.16 or later.

package excelize

import (
	"encoding/xml"
	"io"
	"sort"
	"strings"
)

// sparklineGroupPresets defined the list of sparkline group to create
// x14:sparklineGroups element by given sparkline style ID.
var sparklineGroupPresets = []*xlsxX14SparklineGroup{
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(4), Tint: -0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(5)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(4), Tint: -0.499984740745262},
		ColorFirst:    &xlsxColor{Theme: intPtr(4), Tint: 0.39997558519241921},
		ColorLast:     &xlsxColor{Theme: intPtr(4), Tint: 0.39997558519241921},
		ColorHigh:     &xlsxColor{Theme: intPtr(4)},
		ColorLow:      &xlsxColor{Theme: intPtr(4)},
	}, // 0
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(4), Tint: -0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(5)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(4), Tint: -0.499984740745262},
		ColorFirst:    &xlsxColor{Theme: intPtr(4), Tint: 0.39997558519241921},
		ColorLast:     &xlsxColor{Theme: intPtr(4), Tint: 0.39997558519241921},
		ColorHigh:     &xlsxColor{Theme: intPtr(4)},
		ColorLow:      &xlsxColor{Theme: intPtr(4)},
	}, // 1
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(5), Tint: -0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(6)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(5), Tint: -0.499984740745262},
		ColorFirst:    &xlsxColor{Theme: intPtr(5), Tint: 0.39997558519241921},
		ColorLast:     &xlsxColor{Theme: intPtr(5), Tint: 0.39997558519241921},
		ColorHigh:     &xlsxColor{Theme: intPtr(5)},
		ColorLow:      &xlsxColor{Theme: intPtr(5)},
	}, // 2
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(6), Tint: -0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(7)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(6), Tint: -0.499984740745262},
		ColorFirst:    &xlsxColor{Theme: intPtr(6), Tint: 0.39997558519241921},
		ColorLast:     &xlsxColor{Theme: intPtr(6), Tint: 0.39997558519241921},
		ColorHigh:     &xlsxColor{Theme: intPtr(6)},
		ColorLow:      &xlsxColor{Theme: intPtr(6)},
	}, // 3
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(7), Tint: -0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(8)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(7), Tint: -0.499984740745262},
		ColorFirst:    &xlsxColor{Theme: intPtr(7), Tint: 0.39997558519241921},
		ColorLast:     &xlsxColor{Theme: intPtr(7), Tint: 0.39997558519241921},
		ColorHigh:     &xlsxColor{Theme: intPtr(7)},
		ColorLow:      &xlsxColor{Theme: intPtr(7)},
	}, // 4
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(8), Tint: -0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(9)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(8), Tint: -0.499984740745262},
		ColorFirst:    &xlsxColor{Theme: intPtr(8), Tint: 0.39997558519241921},
		ColorLast:     &xlsxColor{Theme: intPtr(8), Tint: 0.39997558519241921},
		ColorHigh:     &xlsxColor{Theme: intPtr(8)},
		ColorLow:      &xlsxColor{Theme: intPtr(8)},
	}, // 5
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(9), Tint: -0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(4)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(9), Tint: -0.499984740745262},
		ColorFirst:    &xlsxColor{Theme: intPtr(9), Tint: 0.39997558519241921},
		ColorLast:     &xlsxColor{Theme: intPtr(9), Tint: 0.39997558519241921},
		ColorHigh:     &xlsxColor{Theme: intPtr(9)},
		ColorLow:      &xlsxColor{Theme: intPtr(9)},
	}, // 6
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorNegative: &xlsxColor{Theme: intPtr(5)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(5)},
		ColorLow:      &xlsxColor{Theme: intPtr(5)},
	}, // 7
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorNegative: &xlsxColor{Theme: intPtr(6)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
	}, // 8
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorNegative: &xlsxColor{Theme: intPtr(7)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
	}, // 9
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorNegative: &xlsxColor{Theme: intPtr(8)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
	}, // 10
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorNegative: &xlsxColor{Theme: intPtr(9)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
	}, // 11
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorNegative: &xlsxColor{Theme: intPtr(4)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
	}, // 12
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(4)},
		ColorNegative: &xlsxColor{Theme: intPtr(5)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
	}, // 13
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(5)},
		ColorNegative: &xlsxColor{Theme: intPtr(6)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
	}, // 14
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(6)},
		ColorNegative: &xlsxColor{Theme: intPtr(7)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
	}, // 15
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(7)},
		ColorNegative: &xlsxColor{Theme: intPtr(8)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
	}, // 16
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(8)},
		ColorNegative: &xlsxColor{Theme: intPtr(9)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
	}, // 17
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(9)},
		ColorNegative: &xlsxColor{Theme: intPtr(4)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
	}, // 18
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(4), Tint: 0.39997558519241921},
		ColorNegative: &xlsxColor{Theme: intPtr(0), Tint: -0.499984740745262},
		ColorMarkers:  &xlsxColor{Theme: intPtr(4), Tint: 0.79998168889431442},
		ColorFirst:    &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(4), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(4), Tint: -0.499984740745262},
		ColorLow:      &xlsxColor{Theme: intPtr(4), Tint: -0.499984740745262},
	}, // 19
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(5), Tint: 0.39997558519241921},
		ColorNegative: &xlsxColor{Theme: intPtr(0), Tint: -0.499984740745262},
		ColorMarkers:  &xlsxColor{Theme: intPtr(5), Tint: 0.79998168889431442},
		ColorFirst:    &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(5), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(5), Tint: -0.499984740745262},
		ColorLow:      &xlsxColor{Theme: intPtr(5), Tint: -0.499984740745262},
	}, // 20
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(6), Tint: 0.39997558519241921},
		ColorNegative: &xlsxColor{Theme: intPtr(0), Tint: -0.499984740745262},
		ColorMarkers:  &xlsxColor{Theme: intPtr(6), Tint: 0.79998168889431442},
		ColorFirst:    &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(6), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(6), Tint: -0.499984740745262},
		ColorLow:      &xlsxColor{Theme: intPtr(6), Tint: -0.499984740745262},
	}, // 21
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(7), Tint: 0.39997558519241921},
		ColorNegative: &xlsxColor{Theme: intPtr(0), Tint: -0.499984740745262},
		ColorMarkers:  &xlsxColor{Theme: intPtr(7), Tint: 0.79998168889431442},
		ColorFirst:    &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(7), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(7), Tint: -0.499984740745262},
		ColorLow:      &xlsxColor{Theme: intPtr(7), Tint: -0.499984740745262},
	}, // 22
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(8), Tint: 0.39997558519241921},
		ColorNegative: &xlsxColor{Theme: intPtr(0), Tint: -0.499984740745262},
		ColorMarkers:  &xlsxColor{Theme: intPtr(8), Tint: 0.79998168889431442},
		ColorFirst:    &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(8), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(8), Tint: -0.499984740745262},
		ColorLow:      &xlsxColor{Theme: intPtr(8), Tint: -0.499984740745262},
	}, // 23
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(9), Tint: 0.39997558519241921},
		ColorNegative: &xlsxColor{Theme: intPtr(0), Tint: -0.499984740745262},
		ColorMarkers:  &xlsxColor{Theme: intPtr(9), Tint: 0.79998168889431442},
		ColorFirst:    &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(9), Tint: -0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(9), Tint: -0.499984740745262},
		ColorLow:      &xlsxColor{Theme: intPtr(9), Tint: -0.499984740745262},
	}, // 24
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(1), Tint: 0.499984740745262},
		ColorNegative: &xlsxColor{Theme: intPtr(1), Tint: 0.249977111117893},
		ColorMarkers:  &xlsxColor{Theme: intPtr(1), Tint: 0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(1), Tint: 0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(1), Tint: 0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(1), Tint: 0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(1), Tint: 0.249977111117893},
	}, // 25
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(1), Tint: 0.34998626667073579},
		ColorNegative: &xlsxColor{Theme: intPtr(0), Tint: 0.249977111117893},
		ColorMarkers:  &xlsxColor{Theme: intPtr(0), Tint: 0.249977111117893},
		ColorFirst:    &xlsxColor{Theme: intPtr(0), Tint: 0.249977111117893},
		ColorLast:     &xlsxColor{Theme: intPtr(0), Tint: 0.249977111117893},
		ColorHigh:     &xlsxColor{Theme: intPtr(0), Tint: 0.249977111117893},
		ColorLow:      &xlsxColor{Theme: intPtr(0), Tint: 0.249977111117893},
	}, // 26
	{
		ColorSeries:   &xlsxColor{RGB: "FF323232"},
		ColorNegative: &xlsxColor{RGB: "FFD00000"},
		ColorMarkers:  &xlsxColor{RGB: "FFD00000"},
		ColorFirst:    &xlsxColor{RGB: "FFD00000"},
		ColorLast:     &xlsxColor{RGB: "FFD00000"},
		ColorHigh:     &xlsxColor{RGB: "FFD00000"},
		ColorLow:      &xlsxColor{RGB: "FFD00000"},
	}, // 27
	{
		ColorSeries:   &xlsxColor{RGB: "FF000000"},
		ColorNegative: &xlsxColor{RGB: "FF0070C0"},
		ColorMarkers:  &xlsxColor{RGB: "FF0070C0"},
		ColorFirst:    &xlsxColor{RGB: "FF0070C0"},
		ColorLast:     &xlsxColor{RGB: "FF0070C0"},
		ColorHigh:     &xlsxColor{RGB: "FF0070C0"},
		ColorLow:      &xlsxColor{RGB: "FF0070C0"},
	}, // 28
	{
		ColorSeries:   &xlsxColor{RGB: "FF376092"},
		ColorNegative: &xlsxColor{RGB: "FFD00000"},
		ColorMarkers:  &xlsxColor{RGB: "FFD00000"},
		ColorFirst:    &xlsxColor{RGB: "FFD00000"},
		ColorLast:     &xlsxColor{RGB: "FFD00000"},
		ColorHigh:     &xlsxColor{RGB: "FFD00000"},
		ColorLow:      &xlsxColor{RGB: "FFD00000"},
	}, // 29
	{
		ColorSeries:   &xlsxColor{RGB: "FF0070C0"},
		ColorNegative: &xlsxColor{RGB: "FF000000"},
		ColorMarkers:  &xlsxColor{RGB: "FF000000"},
		ColorFirst:    &xlsxColor{RGB: "FF000000"},
		ColorLast:     &xlsxColor{RGB: "FF000000"},
		ColorHigh:     &xlsxColor{RGB: "FF000000"},
		ColorLow:      &xlsxColor{RGB: "FF000000"},
	}, // 30
	{
		ColorSeries:   &xlsxColor{RGB: "FF5F5F5F"},
		ColorNegative: &xlsxColor{RGB: "FFFFB620"},
		ColorMarkers:  &xlsxColor{RGB: "FFD70077"},
		ColorFirst:    &xlsxColor{RGB: "FF5687C2"},
		ColorLast:     &xlsxColor{RGB: "FF359CEB"},
		ColorHigh:     &xlsxColor{RGB: "FF56BE79"},
		ColorLow:      &xlsxColor{RGB: "FFFF5055"},
	}, // 31
	{
		ColorSeries:   &xlsxColor{RGB: "FF5687C2"},
		ColorNegative: &xlsxColor{RGB: "FFFFB620"},
		ColorMarkers:  &xlsxColor{RGB: "FFD70077"},
		ColorFirst:    &xlsxColor{RGB: "FF777777"},
		ColorLast:     &xlsxColor{RGB: "FF359CEB"},
		ColorHigh:     &xlsxColor{RGB: "FF56BE79"},
		ColorLow:      &xlsxColor{RGB: "FFFF5055"},
	}, // 32
	{
		ColorSeries:   &xlsxColor{RGB: "FFC6EFCE"},
		ColorNegative: &xlsxColor{RGB: "FFFFC7CE"},
		ColorMarkers:  &xlsxColor{RGB: "FF8CADD6"},
		ColorFirst:    &xlsxColor{RGB: "FFFFDC47"},
		ColorLast:     &xlsxColor{RGB: "FFFFEB9C"},
		ColorHigh:     &xlsxColor{RGB: "FF60D276"},
		ColorLow:      &xlsxColor{RGB: "FFFF5367"},
	}, // 33
	{
		ColorSeries:   &xlsxColor{RGB: "FF00B050"},
		ColorNegative: &xlsxColor{RGB: "FFFF0000"},
		ColorMarkers:  &xlsxColor{RGB: "FF0070C0"},
		ColorFirst:    &xlsxColor{RGB: "FFFFC000"},
		ColorLast:     &xlsxColor{RGB: "FFFFC000"},
		ColorHigh:     &xlsxColor{RGB: "FF00B050"},
		ColorLow:      &xlsxColor{RGB: "FFFF0000"},
	}, // 34
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(3)},
		ColorNegative: &xlsxColor{Theme: intPtr(9)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(8)},
		ColorFirst:    &xlsxColor{Theme: intPtr(4)},
		ColorLast:     &xlsxColor{Theme: intPtr(5)},
		ColorHigh:     &xlsxColor{Theme: intPtr(6)},
		ColorLow:      &xlsxColor{Theme: intPtr(7)},
	}, // 35
	{
		ColorSeries:   &xlsxColor{Theme: intPtr(1)},
		ColorNegative: &xlsxColor{Theme: intPtr(9)},
		ColorMarkers:  &xlsxColor{Theme: intPtr(8)},
		ColorFirst:    &xlsxColor{Theme: intPtr(4)},
		ColorLast:     &xlsxColor{Theme: intPtr(5)},
		ColorHigh:     &xlsxColor{Theme: intPtr(6)},
		ColorLow:      &xlsxColor{Theme: intPtr(7)},
	}, // 36
}

// AddSparkline provides a function to add sparklines to the worksheet by
// given formatting options. Sparklines are small charts that fit in a single
// cell and are used to show trends in data. Sparklines are a feature of Excel
// 2010 and later only. You can write them to an XLSX file that can be read by
// Excel 2007, but they won't be displayed. For example, add a grouped
// sparkline. Changes are applied to all three:
//
//	err := f.AddSparkline("Sheet1", &excelize.SparklineOptions{
//	    Location: []string{"A1", "A2", "A3"},
//	    Range:    []string{"Sheet2!A1:J1", "Sheet2!A2:J2", "Sheet2!A3:J3"},
//	    Markers:  true,
//	})
//
// The following shows the formatting options of sparkline supported by excelize:
//
//	 Parameter   | Description
//	-------------+--------------------------------------------
//	 Location    | Required, must have the same number with 'Range' parameter
//	 Range       | Required, must have the same number with 'Location' parameter
//	 Type        | Enumeration value: line, column, win_loss
//	 Style       | Value range: 0 - 35
//	 Hight       | Toggle sparkline high points
//	 Low         | Toggle sparkline low points
//	 First       | Toggle sparkline first points
//	 Last        | Toggle sparkline last points
//	 Negative    | Toggle sparkline negative points
//	 Markers     | Toggle sparkline markers
//	 Axis        | Used to specify if show horizontal axis
//	 Reverse     | Used to specify if enable plot data right-to-left
//	 SeriesColor | An RGB Color is specified as RRGGBB
func (f *File) AddSparkline(sheet string, opts *SparklineOptions) error {
	var (
		err                 error
		ws                  *xlsxWorksheet
		sparkType           string
		sparkTypes          map[string]string
		specifiedSparkTypes string
		ok                  bool
		group               *xlsxX14SparklineGroup
		groups              *xlsxX14SparklineGroups
	)

	// parameter validation
	if ws, err = f.parseFormatAddSparklineSet(sheet, opts); err != nil {
		return err
	}
	// Handle the sparkline type
	sparkType = "line"
	sparkTypes = map[string]string{"line": "line", "column": "column", "win_loss": "stacked"}
	if opts.Type != "" {
		if specifiedSparkTypes, ok = sparkTypes[opts.Type]; !ok {
			err = ErrSparklineType
			return err
		}
		sparkType = specifiedSparkTypes
	}
	group = sparklineGroupPresets[opts.Style]
	group.Type = sparkType
	group.ColorAxis = &xlsxColor{RGB: "FF000000"}
	group.DisplayEmptyCellsAs = "gap"
	group.High = opts.High
	group.Low = opts.Low
	group.First = opts.First
	group.Last = opts.Last
	group.Negative = opts.Negative
	group.DisplayXAxis = opts.Axis
	group.Markers = opts.Markers
	if opts.SeriesColor != "" {
		group.ColorSeries = &xlsxColor{
			RGB: getPaletteColor(opts.SeriesColor),
		}
	}
	if opts.Reverse {
		group.RightToLeft = opts.Reverse
	}
	f.addSparkline(opts, group)
	if err = f.appendSparkline(ws, group, groups); err != nil {
		return err
	}
	f.addSheetNameSpace(sheet, NameSpaceSpreadSheetX14)
	return err
}

// parseFormatAddSparklineSet provides a function to validate sparkline
// properties.
func (f *File) parseFormatAddSparklineSet(sheet string, opts *SparklineOptions) (*xlsxWorksheet, error) {
	ws, err := f.workSheetReader(sheet)
	if err != nil {
		return ws, err
	}
	if opts == nil {
		return ws, ErrParameterRequired
	}
	if len(opts.Location) < 1 {
		return ws, ErrSparklineLocation
	}
	if len(opts.Range) < 1 {
		return ws, ErrSparklineRange
	}
	// The range and locations must match
	if len(opts.Location) != len(opts.Range) {
		return ws, ErrSparkline
	}
	if opts.Style < 0 || opts.Style > 35 {
		return ws, ErrSparklineStyle
	}
	if ws.ExtLst == nil {
		ws.ExtLst = &xlsxExtLst{}
	}
	return ws, err
}

// addSparkline provides a function to create a sparkline in a sparkline group
// by given properties.
func (f *File) addSparkline(opts *SparklineOptions, group *xlsxX14SparklineGroup) {
	for idx, location := range opts.Location {
		group.Sparklines.Sparkline = append(group.Sparklines.Sparkline, &xlsxX14Sparkline{
			F:     opts.Range[idx],
			Sqref: location,
		})
	}
}

// appendSparkline provides a function to append sparkline to sparkline
// groups.
func (f *File) appendSparkline(ws *xlsxWorksheet, group *xlsxX14SparklineGroup, groups *xlsxX14SparklineGroups) error {
	var (
		err                                                    error
		idx                                                    int
		appendMode                                             bool
		decodeExtLst                                           = new(decodeExtLst)
		decodeSparklineGroups                                  *decodeX14SparklineGroups
		ext                                                    *xlsxExt
		sparklineGroupsBytes, sparklineGroupBytes, extLstBytes []byte
	)
	sparklineGroupBytes, _ = xml.Marshal(group)
	if ws.ExtLst != nil { // append mode ext
		if err = f.xmlNewDecoder(strings.NewReader("<extLst>" + ws.ExtLst.Ext + "</extLst>")).
			Decode(decodeExtLst); err != nil && err != io.EOF {
			return err
		}
		for idx, ext = range decodeExtLst.Ext {
			if ext.URI == ExtURISparklineGroups {
				decodeSparklineGroups = new(decodeX14SparklineGroups)
				if err = f.xmlNewDecoder(strings.NewReader(ext.Content)).
					Decode(decodeSparklineGroups); err != nil && err != io.EOF {
					return err
				}
				if groups == nil {
					groups = &xlsxX14SparklineGroups{}
				}
				groups.XMLNSXM = NameSpaceSpreadSheetExcel2006Main.Value
				groups.Content = decodeSparklineGroups.Content + string(sparklineGroupBytes)
				sparklineGroupsBytes, _ = xml.Marshal(groups)
				decodeExtLst.Ext[idx].Content = string(sparklineGroupsBytes)
				appendMode = true
			}
		}
	}
	if !appendMode {
		sparklineGroupsBytes, _ = xml.Marshal(&xlsxX14SparklineGroups{
			XMLNSXM:         NameSpaceSpreadSheetExcel2006Main.Value,
			SparklineGroups: []*xlsxX14SparklineGroup{group},
		})
		decodeExtLst.Ext = append(decodeExtLst.Ext, &xlsxExt{
			URI: ExtURISparklineGroups, Content: string(sparklineGroupsBytes),
		})
	}
	sort.Slice(decodeExtLst.Ext, func(i, j int) bool {
		return inStrSlice(worksheetExtURIPriority, decodeExtLst.Ext[i].URI, false) <
			inStrSlice(worksheetExtURIPriority, decodeExtLst.Ext[j].URI, false)
	})
	extLstBytes, err = xml.Marshal(decodeExtLst)
	ws.ExtLst = &xlsxExtLst{Ext: strings.TrimSuffix(strings.TrimPrefix(string(extLstBytes), "<extLst>"), "</extLst>")}
	return err
}