import { encodeBase64 } from "@std/encoding/base64";
import { readDirFiles } from "../util/readDir.ts";

interface BlockItem {
  name: string;
  resourceLocation: string;
  images: string[];
}

export const readBlocks = async (path: string) => {
  const blocks: BlockItem[] =
    (await readDirFiles(path + "/assets/minecraft/blockstates"))
      .map((b) => ({
        name: b.replace(".json", ""),
        resourceLocation: "minecraft:" + b.replace(".json", ""),
        images: [],
      }));

  const texPath = path + "/assets/minecraft/textures/block";
  for await (const image of Deno.readDir(texPath)) {
    for (const block of blocks) {
      if (image.name.startsWith(block.name)) {
        const data = await Deno.readFile(texPath + "/" + image.name);
        block.images.push("image/png;base64," + encodeBase64(data));
      }
    }
  }
  return blocks;
};

export const readItems = async (path: string) => {
  const items: BlockItem[] =
    (await readDirFiles(path + "/assets/minecraft/models/item")).map((i) => ({
      name: i.replace(".json", ""),
      resourceLocation: "minecraft:" + i.replace(".json", ""),
      images: [],
    })).slice(0, 10);

  for (const item of items) {
    const data = await Deno.readFile(
      path + "/assets/minecraft/models/item/" + item.name + ".json",
    );
    const json = JSON.parse(new TextDecoder().decode(data));
    const texDir = path + "/assets/minecraft/textures/";
    if (json.textures) {
      const texLoc = json.textures.layer0;
      if (texLoc) {
        const data = await Deno.readFile(
          texDir + texLoc.replace("minecraft:", "") + ".png",
        );
        item.images.push("image/png;base64," + encodeBase64(data));
      }
    } else if (json.parent) {
      const parent = await Deno.readFile(
        path + "/assets/minecraft/models/" +
          json.parent.replace("minecraft:", "") + ".json",
      );
      const parentJson = JSON.parse(new TextDecoder().decode(parent));
      if (parentJson.textures) {
        let texLoc = parentJson.textures.all;
        if (!texLoc) texLoc = parentJson.textures.side;
        if (!texLoc) texLoc = parentJson.textures.top;
        if (!texLoc) texLoc = parentJson.textures.bottom;
        if (texLoc) {
          const data = await Deno.readFile(
            texDir + texLoc.replace("minecraft:", "") + ".png",
          );
          item.images.push("image/png;base64," + encodeBase64(data));
        }
      }
    }
  }

  return items;
};

if (import.meta.main) {
  const path = "./resources/1.21.1";
  console.log(await readItems(path));
}