package ui

import (
	"git.sr.ht/~rockorager/vaxis"
)

type Context struct {
	Window vaxis.Window
	x, y   int
}

type View interface {
	Event(state *State, event vaxis.Event) bool
	// MouseEvent(localX int, localY int, event vaxis.Event)
}

var Events = make(chan vaxis.Event)
var Quit = make(chan struct{})
var ViewChange = make(chan View, 1)

type State struct {
	content View
	vx      *vaxis.Vaxis
}

func New(view View) (state State, err error) {
	vx, err := vaxis.New(vaxis.Options{
		DisableMouse: false,
		CSIuBitMask:  vaxis.CSIuDisambiguate | vaxis.CSIuReportEvents | vaxis.CSIuAlternateKeys | vaxis.CSIuAllKeys | vaxis.CSIuAssociatedText,
	})
	if err != nil {
		return
	}
	state = State{
		content: view,
		vx:      vx,
	}
	state.vx.SetTitle("neofeels")

	go func() {
		for event := range state.vx.Events() {
			state.vx.Window().Clear()
			Events <- event
		}
		close(Events)
	}()

	return
}

func (state *State) HandleEvent(event vaxis.Event) {
	state.content.Event(state, event)
	state.vx.Render()
}

func (state *State) HandleViewChange(view View) {
	state.vx.Window().Clear()
	state.content = view
	state.content.Event(state, vaxis.Redraw{})
	state.vx.Render()
}

func (state *State) Close() {
	state.vx.Close()
}

func (state *State) PostEvent() func(ev vaxis.Event) {
	return state.vx.PostEvent
}

func (state *State) Events() chan vaxis.Event {
	return state.vx.Events()
}

func (state *State) Render() {
	state.vx.Render()
}

func (state *State) Window() vaxis.Window {
	return state.vx.Window()
}