timechart.go

package tui

import (
	"image/color"
	"sort"
	"strconv"
	"strings"
	"sync"
	"time"

	"get-container/cmd/hytop/tchart"
	"get-container/utils"

	"github.com/NimbleMarkets/ntcharts/canvas/runes"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"
	zone "github.com/lrstanley/bubblezone"
	"github.com/lucasb-eyer/go-colorful"
)

const (
	A = "├"
)

var (
	axisFStyle = lipgloss.NewStyle().Inline(true).Foreground(lipgloss.Color("#4d4d4dff"))
)

// genXAxis 生成X轴，参数l是x轴的长度
func genXAxis(l int) string {
	t60 := l / 30
	t30 := l >= 18
	var result string
	if t30 {
		result = A + strings.Repeat("─", 14)
		result = axisFStyle.Render("30s") + result
	} else {
		return strings.Repeat("─", l)
	}
	// 长度不超过33
	if l < 33 {
		return strings.Repeat("─", l-18) + result
	}
	for i := 1; i <= t60+1; i++ {
		timeStr := strconv.Itoa(i*60) + "s"
		timeStrLen := len(timeStr)
		timeStr = axisFStyle.Render(timeStr)
		targetLen := timeStrLen + i*30
		if l < targetLen {
			// 不渲染标记，仅增加轴长度
			result = strings.Repeat("─", l-lipgloss.Width(result)) + result
			break
		}
		// 渲染标记
		result = timeStr + A + strings.Repeat("─", targetLen-lipgloss.Width(result)-timeStrLen-1) + result
	}
	return result
}

// MyTimeChartMsg 时间流表消息，用于插入数据
type MyTimeChartMsg struct {
	Points []tchart.TimePoint
}

// MyTimeChart 特化的时间流表，时间区域就是宽度的2倍，单位是秒
type MyTimeChart struct {
	chart         *tchart.Model      // 原始图表
	zM            *zone.Manager      // 区域管理
	points        []tchart.TimePoint // 数据点
	width, height int                // 图表的高度和宽度
	max, min      float64            // y轴的最值
	lockPoints    sync.RWMutex       // 保护dataSet的并发读写
	color         []color.Color
}

// New 新建图表，其中dataSet的Key为数据集名称，value为数据集的颜色
func NewTimeChart(width, height int, vmin, vmax float64, color []color.Color) *MyTimeChart {
	result := MyTimeChart{}
	result.max = vmax
	result.min = vmin
	result.width = width
	result.height = height
	zoneManager := zone.New()
	result.zM = zoneManager
	result.lockPoints = sync.RWMutex{}
	result.lockPoints.Lock()
	result.points = make([]tchart.TimePoint, (result.width*2)+1)
	// 准备数据，数据间隔为1秒
	now := time.Now()
	for i := result.width * 2; i >= 0; i-- {
		result.points[i] = tchart.TimePoint{Time: now.Add(time.Duration(-i) * time.Second), Value: vmin}
	}
	result.lockPoints.Unlock()
	s := tchart.New(width, height+1,
		tchart.WithLineStyle(runes.ThinLineStyle),
		tchart.WithZoneManager(zoneManager),
		tchart.WithYRange(vmin, vmax),
		tchart.WithXYSteps(0, 0),
		tchart.WithTimeSeries(result.points),
	)
	result.chart = &s
	result.color = color
	return &result
}

func (m *MyTimeChart) PutPoint(points []tchart.TimePoint) {
	ops := append(m.points, points...)
	// 排序
	sort.Slice(ops, func(i, j int) bool {
		return ops[i].Time.Before(ops[j].Time)
	})
	threshold := time.Now().Add(time.Second * time.Duration(-2*m.width))
	targetIndex := 0
	for i, p := range ops {
		if !p.Time.Before(threshold) {
			targetIndex = i
			break
		}
	}
	nps := append(make([]tchart.TimePoint, 0), ops[targetIndex:]...)
	m.points = nps
	s := tchart.New(m.width, m.height+1,
		tchart.WithLineStyle(runes.ThinLineStyle),
		tchart.WithZoneManager(m.zM),
		tchart.WithYRange(m.min, m.max),
		tchart.WithXYSteps(0, 0),
		tchart.WithTimeSeries(m.points),
	)
	// 插入数据
	m.chart = nil
	m.chart = &s
	m.chart.DrawXYAxisAndLabel()
	m.chart.DrawBrailleAll()
}

func (m *MyTimeChart) Init() tea.Cmd {
	m.chart.DrawXYAxisAndLabel()
	m.chart.DrawBrailleAll()
	return nil
}

func (m *MyTimeChart) Update(inputMsg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := inputMsg.(type) {
	case MyTimeChartMsg:
		m.PutPoint(msg.Points)
		return m, nil
	}
	return m, nil
}

func (m *MyTimeChart) View() string {
	str := m.zM.Scan(m.chart.View())
	sb := strings.Builder{}
	sb.WriteString(str[m.width+1:])
	str = sb.String()
	// return str

	lines := strings.Split(strings.Trim(str, "\n"), "\n")
	runes := make([][]rune, len(lines))
	for k, v := range lines {
		runes[k] = []rune(v)
	}
	width := lipgloss.Width(str)
	height := lipgloss.Height(str)
	for col := range width {
		firstLine := -1
		var charStat utils.CharType = utils.CharEmpty
		for line := range height {
			c := runes[line][col]
			charType := utils.GetCharType(c)
			if charType != utils.CharEmpty && firstLine == -1 {
				firstLine = line
			}
			if firstLine == -1 {
				continue
			}
			if firstLine == line {
				// 遇到了一列的第一个非空字符
				if t, have := utils.MM[c]; have {
					runes[line][col] = t
				}
				charStat = utils.CharTypeOr(charStat, utils.GetCharType(runes[line][col]))
			} else {
				// 第一个非空字符下面的字符
				switch charType {
				case utils.CharEmpty:
					switch charStat {
					case utils.CharLeft:
						runes[line][col] = utils.LeftFullMW
					case utils.CharRight:
						runes[line][col] = utils.RightFullMW
					case utils.CharFull:
						runes[line][col] = utils.FullMW
					}
				case utils.CharLeft:
					switch utils.CharTypeOr(charStat, utils.CharLeft) {
					case utils.CharLeft:
						runes[line][col] = utils.LeftFullMW
					case utils.CharRight:
						runes[line][col] = utils.RightFullMW
					case utils.CharFull:
						runes[line][col] = utils.FullMW
					}
					charStat = utils.CharTypeOr(charStat, utils.CharLeft)
				case utils.CharRight:
					switch utils.CharTypeOr(charStat, utils.CharRight) {
					case utils.CharLeft:
						runes[line][col] = utils.LeftFullMW
					case utils.CharRight:
						runes[line][col] = utils.RightFullMW
					case utils.CharFull:
						runes[line][col] = utils.FullMW
					}
					charStat = utils.CharTypeOr(charStat, utils.CharRight)
				case utils.CharFull:
					charStat = utils.CharFull
				}

			}
		}
	}
	resultLines := make([]string, height)
	for k, v := range runes {
		resultLines[k] = string(v)
	}
	if len(m.color) == height {
		for k, v := range resultLines {
			c, _ := colorful.MakeColor(m.color[k])
			resultLines[k] = lipgloss.NewStyle().Foreground(lipgloss.Color(c.Hex())).Render(v)
		}
	}
	return strings.Join(resultLines, "\n")
}