package assetstore

import (
	"image"
	"os"

	"github.com/hajimehoshi/ebiten"
	_ "github.com/samuel/go-pcx/pcx" // PCX support
)

func (a *AssetStore) Image(name string) (*ebiten.Image, error) {
	name = canonical(name)
	if img, ok := a.images[name]; ok {
		return img, nil
	}

	// baps, ordoor, geas store .pcx files in Pic
	// TODO: SL stores .bmp files in Res
	filename, err := a.lookup(name, "pcx", "Pic")
	if err != nil {
		return nil, err
	}

	f, err := os.Open(filename)
	if err != nil {
		return nil, err
	}
	defer f.Close()

	rawImg, _, err := image.Decode(f)
	if err != nil {
		return nil, err
	}

	img, err := ebiten.NewImageFromImage(rawImg, ebiten.FilterDefault)
	if err != nil {
		return nil, err
	}

	a.images[name] = img
	return img, nil
}