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package cointop
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import (
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"fmt"
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"strings"
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"time"
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"github.com/miguelmota/cointop/pkg/color"
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"github.com/miguelmota/cointop/pkg/fcache"
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"github.com/miguelmota/cointop/pkg/termui"
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)
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var oneWeek = (time.Hour * 24) * 7
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func (ct *Cointop) updateChart() error {
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maxX := ct.maxtablewidth - 3
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coin := ct.selectedCoinName()
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ct.chartPoints(maxX, coin)
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if len(ct.chartpoints) != 0 {
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ct.chartview.Clear()
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}
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var body string
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for i := range ct.chartpoints {
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var s string
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for j := range ct.chartpoints[i] {
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p := ct.chartpoints[i][j]
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s = fmt.Sprintf("%s%c", s, p.Ch)
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}
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body = fmt.Sprintf("%s%s\n", body, s)
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}
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ct.update(func() {
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fmt.Fprint(ct.chartview, color.White(body))
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})
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return nil
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}
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func (ct *Cointop) chartPoints(maxX int, coin string) error {
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chart := termui.NewLineChart()
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chart.Height = 10
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chart.AxesColor = termui.ColorWhite
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chart.LineColor = termui.ColorCyan
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chart.Border = false
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now := time.Now()
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secs := now.Unix()
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start := secs - int64(oneWeek.Seconds())
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end := secs
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var data []float64
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cachekey := strings.ToLower(coin)
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if cachekey == "" {
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cachekey = "globaldata"
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}
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cached, found := ct.cache.Get(cachekey)
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if found {
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// cache hit
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data, _ = cached.([]float64)
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ct.debuglog("soft cache hit")
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}
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if len(data) == 0 {
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if coin == "" {
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graphData, err := ct.api.GetGlobalMarketGraphData(start, end)
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if err != nil {
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return nil
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}
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for i := range graphData.MarketCapByAvailableSupply {
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data = append(data, graphData.MarketCapByAvailableSupply[i][1]/1E9)
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}
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} else {
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graphData, err := ct.api.GetCoinGraphData(coin, start, end)
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if err != nil {
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return nil
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}
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for i := range graphData.PriceUSD {
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data = append(data, graphData.PriceUSD[i][1])
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}
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}
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ct.cache.Set(cachekey, data, 10*time.Second)
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go func() {
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_ = fcache.Set(cachekey, data, 24*time.Hour)
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}()
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}
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chart.Data = data
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termui.Body = termui.NewGrid()
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termui.Body.Width = maxX
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termui.Body.AddRows(
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termui.NewRow(
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termui.NewCol(12, 0, chart),
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),
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)
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var points [][]termui.Cell
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// calculate layout
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termui.Body.Align()
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w := termui.Body.Width
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h := 10
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row := termui.Body.Rows[0]
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b := row.Buffer()
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for i := 0; i < h; i = i + 1 {
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var rowpoints []termui.Cell
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for j := 0; j < w; j = j + 1 {
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p := b.At(j, i)
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rowpoints = append(rowpoints, p)
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}
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points = append(points, rowpoints)
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}
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ct.chartpoints = points
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return nil
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}
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func (ct *Cointop) selectedCoinName() string {
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coin := ct.selectedcoin
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if coin != nil {
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return coin.Name
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}
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return ""
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}
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func (ct *Cointop) toggleCoinChart() error {
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highlightedcoin := ct.highlightedRowCoin()
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if ct.selectedcoin == highlightedcoin {
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ct.selectedcoin = nil
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} else {
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ct.selectedcoin = highlightedcoin
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}
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ct.updateChart()
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ct.updateMarketbar()
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return nil
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}
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