package assets

import (
	"image/color"
	"image/png"
	"log"
	"net/http"
	"path"
	"strings"

	"github.com/hajimehoshi/ebiten/v2"
	"github.com/hajimehoshi/ebiten/v2/text/v2"

	"muhq.space/muhqs-game/go/font"
)

const (
	IMAGE_URL_PART  string = "html/build/latex-build"
	TILE_URL_PART   string = "assets/tiles"
	SYMBOL_URL_PART string = "assets/symbols/40x40"
)

func retrieveAsset(path string) *ebiten.Image {
	log.Printf("loading asset %s\n", path)
	resp, err := http.Get(PROTOCOL + path)
	if err != nil {
		log.Println(err)
		return nil
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return nil
	}

	img, err := png.Decode(resp.Body)
	if err != nil {
		log.Fatal("decoding ", err)
	}
	return ebiten.NewImageFromImage(img)
}

var cards = map[string]map[string]map[string]*ebiten.Image{}

func GetCard(cardPath string, language string) *ebiten.Image {
	card := path.Base(cardPath)
	set := path.Dir(cardPath)
	img, found := cards[language][set][card]
	if !found {
		url := path.Join(BASE_URL, IMAGE_URL_PART, language, cardPath+".png")
		img = retrieveAsset(url)

		if cards[language] == nil {
			cards[language] = map[string]map[string]*ebiten.Image{}
		}

		if cards[language][set] == nil {
			cards[language][set] = map[string]*ebiten.Image{}
		}

		cards[language][set][card] = img
	}
	return img
}

var tiles = map[string]*ebiten.Image{}

func GetTile(tile string) *ebiten.Image {
	img, found := tiles[tile]
	if !found {
		url := path.Join(BASE_URL, TILE_URL_PART, strings.ReplaceAll(tile, " ", "_")+".png")
		img = retrieveAsset(url)
		tiles[tile] = img
	}
	return img
}

var symbols = map[string]*ebiten.Image{}

func GetSymbol(symbol string) *ebiten.Image {
	img, found := symbols[symbol]
	if !found {
		url := path.Join(BASE_URL, SYMBOL_URL_PART, symbol+".png")
		img = retrieveAsset(url)
		symbols[symbol] = img
	}
	return img
}

func GetGenericSymbol(symbol string) *ebiten.Image {
	img, found := symbols[symbol]
	if !found {
		genericBase := GetSymbol("generic_base")
		img = ebiten.NewImageFromImage(genericBase)
		op := &text.DrawOptions{}
		op.GeoM.Translate(5, 7)
		op.ColorScale.ScaleWithColor(color.Black)
		text.Draw(img, symbol, font.Font24, op)
	}
	return img
}