package mainwindow

import (
	blt "lab.zaar.be/thefish/bearlibterminal"
)

type Layer struct {
	idx          int
	defaultColor uint32
}

func AddLayer(idx int, colorName string) Layer {
	c := blt.ColorFromName(colorName)
	return Layer{idx: idx, defaultColor: c}
}

func (layer *Layer) before() *Layer {
	blt.Layer(layer.idx)
	return layer
}

func (layer *Layer) WithColor(colorName string) *Layer {
	layer.before()
	c := blt.ColorFromName(colorName)
	blt.Color(c)
	return layer
}

func (layer *Layer) after() *Layer {
	blt.Color(layer.defaultColor)
	blt.Layer(0)
	return layer
}

func (layer Layer) Put(x, y int, symbol interface{}) {
	if symbol == nil {
		return
	}
	rnes := []rune(symbol.(string))
	if (len(rnes)) > 0 {
		blt.Put(x, y, int(rnes[0]))
	}
}

func (layer Layer) Print(x, y int, txt string) (w, h int) {
	return blt.Print(x, y, txt)
}

func (layer *Layer) Decorate(f func(args ...interface{})) func(args ...interface{}) {
	return func(args ...interface{}) {
		layer.before()
		f(args)
		layer.after()
	}
}

func (layer *Layer) Render() {

}