func invalidPin(pin string, fe *frontend.Frontend) {
fmt.Printf("Invalid PIN: %s\n", pin)
fe.LcdSet("Invalid PIN!")
fe.LED(2, 3000)
go func() {
fe.IgnoreKeypress = true
time.Sleep(2 * time.Second)
if tuerstatus.CurrentStatus().Open {
fe.LcdSet(" \nOpen")
} else {
fe.LcdSet(" \nClosed")
}
fe.IgnoreKeypress = false
}()
}
// Reads keypresses from the specified frontend, verifies entered pins using
// the given pinstore and sends open/close commands to the specified hometec
// channel.
func ValidatePin(ps *pinstore.Pinstore, fe *frontend.Frontend, ht chan string) {
var keypressBuffer bytes.Buffer
for {
keypress := <-fe.Keypresses
b := []byte(keypress.Key)
fe.LED(1, 50)
fe.Beep(2)
if b[0] != byte('#') {
if keypressBuffer.Len() == 0 {
fe.LcdSet("PIN: *")
} else {
fe.LcdPut("*")
}
keypressBuffer.WriteByte(b[0])
continue
}
pin := keypressBuffer.String()
keypressBuffer.Reset()
if pin == "666" {
fmt.Printf("Got close pin, locking door\n")
fe.LcdSet("Locking door...")
fe.LED(3, 3000)
fe.LED(2, 1)
ht <- "close"
continue
}
if len(pin) != 6 || !validPin.Match([]byte(pin)) {
invalidPin(pin, fe)
continue
}
// The pin is complete, let’s validate it.
if handle, ok := ps.Pins[pin]; ok {
fmt.Printf("%s unlocked the door\n", handle)
fe.LcdSet("Unlocking door...")
fe.LED(3, 3000)
fe.LED(2, 1)
ht <- "open"
continue
}
fmt.Printf("No such PIN: %s\n", pin)
invalidPin(pin, fe)
}
}