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package loading
import (
"fmt"
"sync"
"github.com/liamg/tml"
"github.com/liamg/clinch/terminal"
)
type Bar struct {
lock sync.Mutex
complete bool
}
// NewBar creates a new loading bar
func NewBar() *Bar {
return &Bar{}
}
// SetPercent sets the current percentage completion of the bar, and renders it to the current line
func (bar *Bar) SetPercent(percent float64) {
bar.lock.Lock()
defer bar.lock.Unlock()
if bar.complete {
return
}
w, h := terminal.Size()
terminal.HideCursor()
terminal.MoveCursorTo(0, h-1)
if percent > 100 {
percent = 100
} else if percent < 0 {
percent = 0
}
barWidth := w - 5
size := int(percent * float64(barWidth) / 100)
remaining := int((100 - percent) * float64(barWidth) / 100)
terminal.ClearLine()
for i := 0; i < size; i++ {
tml.Printf("<bg-blue> </bg-blue>")
}
for remaining > 0 {
fmt.Printf(" ")
remaining--
}
fmt.Printf(" %d%%", int(percent))
}
// Log logs a messages to the terminal without disrupting the rendered loading bar
func (bar *Bar) Log(msg string) {
bar.lock.Lock()
defer bar.lock.Unlock()
terminal.ClearLine()
fmt.Println(msg)
}
// Close hides the loading bar and tidies up
func (bar *Bar) Close() {
bar.lock.Lock()
defer bar.lock.Unlock()
bar.complete = true
_, h := terminal.Size()
terminal.MoveCursorTo(0, h-1)
terminal.ClearLine()
terminal.ShowCursor()
}
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