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|
package cmd
import (
"log"
"math"
"strconv"
"time"
"github.com/spf13/cobra"
"github.com/nsfisis/term-clock/internal/term"
)
func drawCountdown(scr *term.Screen, leftSeconds int, bgStyle, fgStyle term.Style) {
if leftSeconds <= 0 {
if int(math.Abs(float64(leftSeconds)))%2 == 0 {
bgStyle, fgStyle = fgStyle, bgStyle
}
leftSeconds = 0
}
// Clear the entire screen.
scr.Clear(bgStyle)
// Calculate number of digits needed
numDigits := 1
if leftSeconds > 0 {
n := leftSeconds
numDigits = 0
for n > 0 {
numDigits++
n /= 10
}
}
scrW, scrH := scr.Size()
// Calculate square size based on number of digits
squareW := scrW / (numDigits*4 + 2)
squareH := min(scrH/(5+2), squareW)
if squareW > squareH*3/2 {
squareW = squareH * 3 / 2
}
xOffset := (scrW - squareW*numDigits*4) / 2
yOffset := (scrH - squareH*5) / 2
// Extract and display each digit
n := leftSeconds
for i := numDigits - 1; i >= 0; i-- {
digit := n % 10
term.DrawNumber(scr, digit, xOffset+squareW*i*4, yOffset, squareW, squareH, fgStyle)
n /= 10
}
}
func cmdCountdown(cmd *cobra.Command, args []string) {
totalSeconds, err := strconv.Atoi(args[0])
if err != nil {
log.Fatalf("%+v", err)
}
if totalSeconds > 9999 {
log.Fatal("Duration over 9999 seconds is not supported.")
}
scr, err := term.NewScreen()
if err != nil {
log.Fatalf("%+v", err)
}
defer scr.Close()
startTime := time.Now()
calcLeftSeconds := func(t time.Time) int {
elapsed := int(t.Sub(startTime).Seconds())
return totalSeconds - elapsed
}
drawCountdown(scr, calcLeftSeconds(time.Now()), term.BgStyle, term.FgStyle)
scr.OnResize(func() bool {
drawCountdown(scr, calcLeftSeconds(time.Now()), term.BgStyle, term.FgStyle)
return false
})
go scr.DoEventLoop()
t := time.NewTicker(1 * time.Second)
defer t.Stop()
for {
select {
case <-scr.QuitC:
return
case now := <-t.C:
drawCountdown(scr, calcLeftSeconds(now), term.BgStyle, term.FgStyle)
scr.Show()
}
}
}
var countdownCmd = &cobra.Command{
Use: "countdown",
Short: "Countdown mode",
Run: cmdCountdown,
Args: cobra.ExactArgs(1),
}
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