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package status // import "hhvn.uk/hbspbar/status"
import (
"os"
"path"
"errors"
"strings"
"image/color"
// "hhvn.uk/hbspbar/drw"
"hhvn.uk/hbspbar/config"
"hhvn.uk/hbspbar/common"
)
func bat(name string) error {
dir := "/sys/class/power_supply"
const (
nothing = iota
charging
discharging
)
u := newUpdate(name)
dirs, err := os.ReadDir(dir)
if dirs == nil { return err }
totalcap := 0
usedcap := 0
stati := nothing
for _, d := range dirs {
if !strings.HasPrefix(d.Name(), "BAT") { continue }
caps, err := common.FileAsLines(path.Join(dir, d.Name(), "capacity"))
if err != nil { return err }
capi, err := common.Intify(caps[0])
if err != nil { return err }
totalcap += 100
usedcap += capi
stats, err := common.FileAsLines(path.Join(dir, d.Name(), "status"))
if err != nil { return err }
// Doesn't deal with 1 battery charging, and another discharging but w/e
switch stats[0] {
case "Charging": if charging > stati { stati = charging }
case "Discharging": if discharging > stati { stati = discharging}
}
}
if totalcap == 0 {
return errors.New("no batteries")
}
avgcap := (usedcap * 100) / totalcap
var c color.Color
// Colour of outline = charge indicator
switch stati {
case nothing: c = config.Fg
case charging: c = config.Green
case discharging: c = config.Red
}
var iw int = 20
var ih int = int(config.H) - 8
var w int = iw * avgcap / 100
// Draw nose
u.drawRect(2, int((config.H - 5) / 2), 2, 5, c, true)
// Draw border
u.drawRect(4, 3, iw + 2, ih + 2, c, false)
switch {
case avgcap < 25: c = config.Red
case avgcap >= 99: c = config.Green
default: c = config.FgDark
}
// Fill
u.drawRect(4 + iw - w, 4, w + 1, ih, c, true)
updates <- u
sleep(1)
return nil
}
func init() {
name := "bat"
register(name)
go func(){
for {
checkError(name, bat(name))
}
}()
}
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