local BAR_ALPHA = 191;

local TOP_BAR_HEIGHT = 110
local TOP_BAR_LINE_MARGIN = 20
local TOP_BAR_LINE_WIDTH = 48

local BOTTOM_BAR_HEIGTH = 128

local titleText = 'MODE SELECT'
local titleWidth = 250

-- Animation related
local entryTransitionScale = 0;
local entryTransitionTopBarOffset = 0;
local entryTransitionBottomBarOffset = 0;

local legend = {
    {
        control = 'START',
        text = 'Confirm selection'
    },
    {
        control = 'KNOB',
        text = 'Scroll'
    },
}

local set = function (title)
    
end



local drawLine = function(fx,fy,tx,ty,width,cr,cg,cb,ca)
    gfx.Save()
	gfx.BeginPath()
	
	gfx.MoveTo(fx,fy)
	gfx.LineTo(tx,ty)

	gfx.StrokeWidth(width or 1)
	gfx.StrokeColor(cr,cg,cb, ca or 255)
	gfx.Stroke()

    gfx.ClosePath()

	gfx.Restore()
end

local drawTopBarLines = function ()
    -- 'Glow' left lines
    glowOffsetIterations = {
        {-1.5,-1.5},
        {-1.5,1.5},
        {1.5,-1.5},
        {1.5,1.5}
    }

    for key, offests in ipairs(glowOffsetIterations) do
        drawLine(
            resx/2-titleWidth/2-TOP_BAR_LINE_MARGIN+offests[1],
            TOP_BAR_HEIGHT/2+offests[2],
            resx/2-titleWidth/2-TOP_BAR_LINE_MARGIN-TOP_BAR_LINE_WIDTH+offests[1],
            TOP_BAR_HEIGHT/2+offests[2],
            4,
            128,200,255,128
        )
        drawLine(
            resx/2+titleWidth/2+TOP_BAR_LINE_MARGIN+offests[1],
            TOP_BAR_HEIGHT/2+offests[2],
            resx/2+titleWidth/2+TOP_BAR_LINE_MARGIN+TOP_BAR_LINE_WIDTH+offests[1],
            TOP_BAR_HEIGHT/2+offests[2],
            4,
            128,200,255,128
        )
    end

    -- Main left line
    drawLine(
        resx/2-titleWidth/2-TOP_BAR_LINE_MARGIN,
        TOP_BAR_HEIGHT/2,
        resx/2-titleWidth/2-TOP_BAR_LINE_MARGIN-TOP_BAR_LINE_WIDTH,
        TOP_BAR_HEIGHT/2,
        4,
        255,255,255
    )
    -- Main right line
    drawLine(
        resx/2+titleWidth/2+TOP_BAR_LINE_MARGIN,
        TOP_BAR_HEIGHT/2,
        resx/2+titleWidth/2+TOP_BAR_LINE_MARGIN+TOP_BAR_LINE_WIDTH,
        TOP_BAR_HEIGHT/2,
        4,
        255,255,255
    )
end

local drawBottomBar = function ()
    gfx.BeginPath();
    gfx.FillColor(0,0,0,BAR_ALPHA);
    gfx.Rect(0,resy-BOTTOM_BAR_HEIGTH+entryTransitionBottomBarOffset,resx, BOTTOM_BAR_HEIGTH);
    gfx.Fill();
    gfx.ClosePath();
end

local progressTransitions = function ()
	entryTransitionScale = entryTransitionScale + 1/60 / 0.5;
	if (entryTransitionScale > 1) then
		entryTransitionScale = 1;
    end

    entryTransitionTopBarOffset = -TOP_BAR_HEIGHT*(1-entryTransitionScale)
    entryTransitionBottomBarOffset = BOTTOM_BAR_HEIGTH*(1-entryTransitionScale)
end

local draw = function ()
    gfx.Save()
    resx, resy = game.GetResolution();

    -- Draw top background
    gfx.BeginPath();
    gfx.FillColor(0,0,0,BAR_ALPHA);
    gfx.Rect(0,entryTransitionTopBarOffset,resx, TOP_BAR_HEIGHT);
    gfx.Fill();
    gfx.ClosePath();

    -- -- Draw the 'glow' effect
    -- gfx.LoadSkinFont("Digital-Serial-Bold.ttf");
    -- gfx.TextAlign(gfx.TEXT_ALIGN_CENTER + gfx.TEXT_ALIGN_MIDDLE);
	-- gfx.FontSize(47);
	-- gfx.FillColor(128,200,255,190);

    -- gfx.Text(titleText, resx/2+1, TOP_BAR_HEIGHT/2+1);
    -- gfx.Text(titleText, resx/2+1, TOP_BAR_HEIGHT/2-1);
    -- gfx.Text(titleText, resx/2-1, TOP_BAR_HEIGHT/2+1);
    -- gfx.Text(titleText, resx/2-1, TOP_BAR_HEIGHT/2+1);

    -- -- Draw top label

	-- gfx.FillColor(255,255,255);
    -- gfx.Text(titleText, resx/2, TOP_BAR_HEIGHT/2);
    -- -- Draw the top label lines
    -- drawTopBarLines()
    gfx.LoadSkinFont("NotoSans-Regular.ttf");

    drawBottomBar();

    progressTransitions();
    gfx.Restore()
end

return {
    set = set,
    draw = draw
};