package elements

import (
	"context"
	"image/color"

	"git.vezzani.net/ben/games/common/ux/v1"
	"github.com/hajimehoshi/ebiten/v2"
	"github.com/hajimehoshi/ebiten/v2/vector"
	"golang.org/x/image/font"
)

type Block struct {
	Label string
	Style struct {
		Width           float32
		Height          float32
		XAlign          XAlign
		YAlign          YAlign
		Offset          int
		Font            *font.Face
		BackgroundColor *color.Color
	}
}

func (b *Block) backgroundColor() color.Color {
	var c *color.Color
	if b.Style.BackgroundColor != nil {
		c = b.Style.BackgroundColor
	} else {
		c = &ux.BackgroundColor
	}

	return *c
}

func (b *Block) size(ctx context.Context) (x, y float32) {
	x = b.Style.Width
	y = b.Style.Height

	if x == 0 || y == 0 {
		px, py := GetContainerSize(ctx)
		if x == 0 {
			x = px
		}
		if y == 0 {
			y = py
		}
	}

	return
}

func (b *Block) Draw(ctx context.Context, image *ebiten.Image) error {
	xz, yz := GetZero(ctx)
	w, h := b.size(ctx)

	vector.StrokeRect(image, xz, yz, w, h, 1, b.backgroundColor(), true)

	return nil
}