package button

import (
	"mayhem-party/src/device/input/raw"
	"os"
)

type Plaintext struct {
	src     raw.Raw
	release byte
}

func NewPlaintext(src raw.Raw) Plaintext {
	releaseChar := byte('!')
	if v := os.Getenv("BUTTON_PLAINTEXT_RELEASE"); v != "" {
		releaseChar = byte(v[0])
	}
	return Plaintext{
		src:     src,
		release: releaseChar,
	}
}

func (p Plaintext) Close() { p.src.Close() }

func (p Plaintext) Read() []Button {
	b := p.src.Read()
	buttons := make([]Button, 0, len(b))
	down := true
	for i := range b {
		if b[i] == p.release {
			down = false
		} else {
			if b[i] != '\n' {
				buttons = append(buttons, Button{Char: b[i], Down: down})
			}
			down = true
		}
	}
	return buttons
}