resource extraction and reading

server/resources/readers.ts

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+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));
+}

server/resources/routes.ts

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+import type { Router } from "../router.ts";
+import { readDirDirs } from "../util/readDir.ts";
+import { versionCompat } from "../util/versionCompat.ts";
+import { readBlocks } from "./readers.ts";
+
+export const createResourcesRoutes = (router: Router) => {
+  router.route("/api/resources/:path*")
+    .get(async (req, ctx) => {
+      const path = ctx.params.path;
+      if (!path) {
+        return new Response("no path provided", { status: 400 });
+      }
+      const format = ctx.url.searchParams.get("format");
+      if (!format) {
+        return new Response("no format provided", { status: 400 });
+      }
+      const packVersion = await Deno.readTextFile(
+        "./pack_versions/" + format + ".json",
+      );
+      const packVersionJson = JSON.parse(packVersion);
+      const mcVersion = packVersionJson.mcVersion;
+      const resourceVersions = await readDirDirs("./resources");
+      for (const resourceVersion of resourceVersions) {
+        if (versionCompat(resourceVersion, mcVersion)) {
+          const resourcePath = "./resources/" + resourceVersion;
+          const splitPath = path.split("/");
+          switch (splitPath[0]) {
+            case "blocks": {
+              return new Response(
+                JSON.stringify(await readBlocks(resourcePath)),
+              );
+            }
+          }
+        }
+      }
+    });
+};

server/resources/unzip.ts

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+import { BearMetalStore } from "@bearmetal/store";
+import { ZipReader } from "@zip.js/zip.js";
+import { ensureFile } from "@std/fs";
+
+export async function unzipResources(mcVersion?: string) {
+  using store = new BearMetalStore();
+  mcVersion = mcVersion || await currentVersion(store);
+
+  console.log("mcVersion", mcVersion);
+
+  if (!mcVersion) return;
+
+  const blob = await Deno.open(
+    store.get("mcPath") + "/versions/" + mcVersion + "/" + mcVersion + ".jar",
+  );
+
+  const zip = new ZipReader(blob);
+
+  for (const entry of await zip.getEntries()) {
+    if (
+      entry.filename.startsWith("assets/") || entry.filename.startsWith("data/")
+    ) {
+      // console.log("entry", entry);
+      await ensureFile(`./resources/${mcVersion}/${entry.filename}`);
+      const writer = await Deno.open(
+        `./resources/${mcVersion}/${entry.filename}`,
+        { write: true },
+      );
+      await entry.getData?.(writer);
+    }
+  }
+}
+
+async function currentVersion(store: BearMetalStore) {
+  const mcPath = store.get("mcPath");
+  if (!mcPath) return;
+
+  const versions = Array.from(Deno.readDirSync(mcPath + "/versions")).filter(
+    (d) => d.isDirectory,
+  ).map((d) => d.name).sort();
+  let version = versions.pop();
+  let found = false;
+  versionC:
+  while (!found) {
+    for await (const file of Deno.readDir(mcPath + "/versions/" + version)) {
+      if (file.name.endsWith(".jar")) {
+        found = true;
+        break versionC;
+      }
+    }
+    version = versions.pop();
+  }
+  return version;
+}
+
+if (import.meta.main) {
+  unzipResources();
+}