package main

import ui "github.com/gizak/termui"
import tm "github.com/nsf/termbox-go"
import "math"

import "time"

func main() {
	err := ui.Init()
	if err != nil {
		panic(err)
	}
	defer ui.Close()

	ui.UseTheme("helloworld")

	p := ui.NewPar(":PRESS q TO QUIT DEMO")
	p.Height = 3
	p.Width = 50
	p.Border.Label = "Text Box"

	strs := []string{"[0] gizak/termui", "[1] editbox.go", "[2] iterrupt.go", "[3] keyboard.go", "[4] output.go", "[5] random_out.go", "[6] dashboard.go", "[7] nsf/termbox-go"}
	list := ui.NewList()
	list.Items = strs
	list.Border.Label = "List"
	list.Height = 7
	list.Width = 25
	list.Y = 4

	g := ui.NewGauge()
	g.Percent = 50
	g.Width = 50
	g.Height = 3
	g.Y = 11
	g.Border.Label = "Gauge"

	spark := ui.NewSparkline()
	spark.Title = "srv 0:"
	spdata := []int{4, 2, 1, 6, 3, 9, 1, 4, 2, 15, 14, 9, 8, 6, 10, 13, 15, 12, 10, 5, 3, 6, 1, 7, 10, 10, 14, 13, 6}
	spark.Data = spdata

	spark1 := ui.NewSparkline()
	spark1.Title = "srv 1:"
	spark1.Data = spdata

	sp := ui.NewSparklines(spark, spark1)
	sp.Width = 25
	sp.Height = 7
	sp.Border.Label = "Sparkline"
	sp.Y = 4
	sp.X = 25

	lc := ui.NewLineChart()
	sinps := (func() []float64 {
		n := 100
		ps := make([]float64, n)
		for i := range ps {
			ps[i] = 1 + math.Sin(float64(i)/4)
		}
		return ps
	})()

	lc.Border.Label = "Line Chart"
	lc.Data = sinps
	lc.Width = 50
	lc.Height = 11
	lc.X = 0
	lc.Y = 14
	lc.Mode = "dot"

	bc := ui.NewBarChart()
	bcdata := []int{3, 2, 5, 3, 9, 5, 3, 2, 5, 8, 3, 2, 4, 5, 3, 2, 5, 7, 5, 3, 2, 6, 7, 4, 6, 3, 6, 7, 8, 3, 6, 4, 5, 3, 2, 4, 6, 4, 8, 5, 9, 4, 3, 6, 5, 3, 6}
	bclabels := []string{"S0", "S1", "S2", "S3", "S4", "S5"}
	bc.Border.Label = "Bar Chart"
	bc.Width = 26
	bc.Height = 10
	bc.X = 51
	bc.Y = 0
	bc.DataLabels = bclabels

	lc1 := ui.NewLineChart()
	lc1.Border.Label = "Line Chart"
	rndwalk := (func() []float64 {
		n := 150
		d := make([]float64, n)
		for i := 1; i < n; i++ {
			if i < 20 {
				d[i] = d[i-1] + 0.01
			}
			if i > 20 {
				d[i] = d[i-1] - 0.05
			}
		}
		return d
	})()
	lc1.Data = rndwalk
	lc1.Width = 26
	lc1.Height = 11
	lc1.X = 51
	lc1.Y = 14

	p1 := ui.NewPar("Hey!\nI am a borderless block!")
	p1.HasBorder = false
	p1.Width = 26
	p1.Height = 2
	p1.X = 52
	p1.Y = 11

	draw := func(t int) {
		g.Percent = t % 101
		list.Items = strs[t%9:]
		sp.Lines[0].Data = spdata[t%10:]
		sp.Lines[1].Data = spdata[t/2%10:]
		lc.Data = sinps[t/2:]
		lc1.Data = rndwalk[t:]
		bc.Data = bcdata[t/2%10:]
		ui.Render(p, list, g, sp, lc, bc, lc1, p1)
	}

	evt := make(chan tm.Event)
	go func() {
		for {
			evt <- tm.PollEvent()
		}
	}()

	i := 0
	for {
		select {
		case e := <-evt:
			if e.Type == tm.EventKey && e.Ch == 'q' {
				return
			}
		default:
			draw(i)
			i++
			if i == 102 {
				return
			}
			time.Sleep(time.Second / 2)
		}
	}
}