50 lines
1.5 KiB
Go
50 lines
1.5 KiB
Go
package mujica
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import (
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"fmt"
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"time"
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"github.com/egoist/mygo/ui"
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"mujicaui/theme"
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)
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// CandleCountdownOptions configure a CandleCountdown.
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type CandleCountdownOptions struct {
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// Location aligns days and weeks; nil is UTC, as exchanges count.
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Location *time.Location
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}
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// CandleCountdown shows the time left until the current candle of interval closes; it wakes once a second only while shown.
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func CandleCountdown(c *ui.Context, interval Interval, opts CandleCountdownOptions) *ui.Element {
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loc := opts.Location
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if loc == nil {
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loc = time.UTC
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}
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now := c.Now()
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left := interval.Close(now, loc).Sub(now)
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k := Tokens(c)
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text := candleCountdownText(left)
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e := ui.Row(c).Gap(Density(c).Unit()).AlignItems(ui.Center).Role(ui.RoleText).Label(fmt.Sprintf(msg(c, "candle_countdown.label"), string(interval), text))
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e.Children(func() {
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ui.Text(c, string(interval)).FontSize(FontSize(c, theme.CaptionSize)).TextColor(k.TextMuted)
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ui.Text(c, text).FontFeatures("tnum").FontWeight(500).TextColor(k.Text).SingleLine()
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})
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// The next whole second, so the text never skips one.
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c.After(left - left.Truncate(time.Second) + time.Millisecond)
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return e
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}
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// candleCountdownText writes d as 59:58, 3:59:58 or 2d 03:59:58.
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func candleCountdownText(d time.Duration) string {
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s := int(d.Seconds())
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days, h, m, sec := s/86400, s/3600%24, s/60%60, s%60
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switch {
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case days > 0:
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return fmt.Sprintf("%dd %02d:%02d:%02d", days, h, m, sec)
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case h > 0:
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return fmt.Sprintf("%d:%02d:%02d", h, m, sec)
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}
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return fmt.Sprintf("%02d:%02d", m, sec)
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}
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