package tracker

import (
	"image"

	"gioui.org/layout"
	"gioui.org/op/clip"
	"gioui.org/op/paint"
	"gioui.org/unit"
	"gioui.org/widget"
	"gioui.org/widget/material"
)

func smallButton(icStyle material.IconButtonStyle) material.IconButtonStyle {
	icStyle.Size = unit.Dp(14)
	icStyle.Inset = layout.UniformInset(unit.Dp(1))
	return icStyle
}

func enableButton(icStyle material.IconButtonStyle, enabled bool) material.IconButtonStyle {
	if !enabled {
		icStyle.Background = disabledContainerColor
		icStyle.Color = disabledTextColor
	}
	return icStyle
}

func trackButton(t *material.Theme, w *widget.Clickable, text string, enabled bool) material.ButtonStyle {
	ret := material.Button(t, w, text)
	if !enabled {
		ret.Background = disabledContainerColor
		ret.Color = disabledTextColor
	}
	return ret
}

func (t *Tracker) Layout(gtx layout.Context) {
	paint.FillShape(gtx.Ops, backgroundColor, clip.Rect(image.Rect(0, 0, gtx.Constraints.Max.X, gtx.Constraints.Max.Y)).Op())
	t.VerticalSplit.Layout(gtx,
		t.layoutTop,
		t.layoutBottom)
	t.updateInstrumentScroll()
}

func (t *Tracker) layoutBottom(gtx layout.Context) layout.Dimensions {
	return t.BottomHorizontalSplit.Layout(gtx,
		func(gtx C) D {
			return Surface{Gray: 24, Focus: t.EditMode == 0}.Layout(gtx, t.layoutPatterns)
		},
		func(gtx C) D {
			return Surface{Gray: 24, Focus: t.EditMode == 1}.Layout(gtx, t.layoutTracker)
		},
	)
}

func (t *Tracker) layoutTop(gtx layout.Context) layout.Dimensions {
	for t.NewInstrumentBtn.Clicked() {
		t.AddInstrument()
	}

	return t.TopHorizontalSplit.Layout(gtx,
		t.layoutSongPanel,
		t.layoutInstruments,
	)

}