package ui
import (
"fmt"
"time"
)
var spinnerChan chan bool
func StartSpinner(msg string) {
style := `⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏`
frames := []rune(style)
length := len(frames)
spinnerChan = make(chan bool)
ticker := time.NewTicker(100 * time.Millisecond)
go func() {
pos := 0
for {
select {
case <-spinnerChan:
ticker.Stop()
return
case <-ticker.C:
fmt.Printf("\r%s ... %s", msg, string(frames[pos%length]))
pos += 1
}
}
}()
}
func StopSpinner() {
// Gracefully handle the case where the spinner is already stopped
// and the channel is closed, yet client code calls StopSpinner() again.
defer func() {
_ = recover()
}()
close(spinnerChan)
fmt.Printf("\r")
fmt.Println()
}
