package main

import (
	"log"

	"gioui.org/app"
	"gioui.org/op"
	"gioui.org/text"
	"gioui.org/unit"

	"pad/internal/ui"
)

func main() {
	go func() {
		w := new(app.Window)
		w.Option(app.Title("Pad"))
		w.Option(app.Size(unit.Dp(390), unit.Dp(844)))
		if err := run(w); err != nil {
			log.Fatal(err)
		}
	}()
	app.Main()
}

func run(w *app.Window) error {
	var ops op.Ops

	shaper := text.NewShaper()
	renderer := ui.New(ui.Theme{FontSize: 14}, shaper)

	elems := starterElements()

	for {
		switch e := w.Event().(type) {
		case app.DestroyEvent:
			return e.Err
		case app.FrameEvent:
			gtx := app.NewContext(&ops, e)
			renderer.Draw(gtx, elems)
			e.Frame(&ops)
		}
	}
}

// starterElements returns a hardcoded set of elements for initial testing.
func starterElements() []ui.Element {
	return []ui.Element{
		ui.NewLabel("Pad", 20, ui.Region{X: 0, Y: 0, W: 390, H: 48}),
		ui.NewListView(ui.Region{X: 0, Y: 48, W: 390, H: 700},
			[]ui.ListItem{
				{Text: "notes.txt"},
				{Text: "ideas.txt"},
				{Text: "todo.txt"},
			}),
	}
}