From 0adf4b32644bdfd95047e7879c578bed4e45b008 Mon Sep 17 00:00:00 2001
From: neoapps-dev <asd22.info@gmail.com>
Date: Tue, 11 Aug 2026 02:10:11 +0300
Subject: [PATCH] feat: android!

---
 .github/workflows/experimental.yml  |  3 +
 .github/workflows/publish.yml       |  3 +
 package.json                        |  1 +
 scripts/download-android-assets.mjs | 87 +++++++++++++++++++++++++++++
 4 files changed, 94 insertions(+)
 create mode 100644 scripts/download-android-assets.mjs

diff --git a/.github/workflows/experimental.yml b/.github/workflows/experimental.yml
index 36879a7..3a8bb8d 100644
--- a/.github/workflows/experimental.yml
+++ b/.github/workflows/experimental.yml
@@ -208,6 +208,9 @@ jobs:
       - name: install frontend dependencies
         run: pnpm install
 
+      - name: download android bundled assets
+        run: pnpm android:assets
+
       - name: restore gradle wrapper jar
         run: |
           VER=$(sed -n 's/.*gradle-\([0-9][0-9.]*\)-bin\.zip.*/\1/p' src-tauri/gen/android/gradle/wrapper/gradle-wrapper.properties)
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 9513ea8..6b48f19 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -180,6 +180,9 @@ jobs:
       - name: install frontend dependencies
         run: pnpm install
 
+      - name: download android bundled assets
+        run: pnpm android:assets
+
       - name: restore gradle wrapper jar
         run: |
           VER=$(sed -n 's/.*gradle-\([0-9][0-9.]*\)-bin\.zip.*/\1/p' src-tauri/gen/android/gradle/wrapper/gradle-wrapper.properties)
diff --git a/package.json b/package.json
index 86f812c..e4f62a2 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
     "tauri": "tauri",
     "tauri:build": "tauri build && pnpm run post-build:macos",
     "post-build:macos": "bash src-tauri/scripts/post-build-macos.sh",
+    "android:assets": "node scripts/download-android-assets.mjs",
     "flatpak": "flatpak-builder --user --install-deps-from=flathub --repo=emerald-repo --force-clean build-flatpak flatpak/io.github.Emerald_Legacy_Launcher.Emerald_Legacy_Launcher.yml && flatpak build-bundle emerald-repo emerald.flatpak io.github.Emerald_Legacy_Launcher.Emerald_Legacy_Launcher"
   },
   "dependencies": {
diff --git a/scripts/download-android-assets.mjs b/scripts/download-android-assets.mjs
new file mode 100644
index 0000000..49ef2bb
--- /dev/null
+++ b/scripts/download-android-assets.mjs
@@ -0,0 +1,87 @@
+#!/usr/bin/env node
+import {
+  createWriteStream,
+  createReadStream,
+  existsSync,
+  rename,
+} from "node:fs";
+import { mkdir } from "node:fs/promises";
+import { createHash } from "node:crypto";
+import { fileURLToPath } from "node:url";
+import path from "node:path";
+const RELEASE_TAG = "android-assets-v1";
+const REPO = "LCE-Hub/LCE-Emerald-Launcher";
+const ASSET_DIR = fileURLToPath(
+  new URL("../src-tauri/gen/android/app/src/main/assets/", import.meta.url),
+);
+
+const ASSETS = [
+  {
+    file: "imagefs.tar.zst",
+    sha256: "7838756e6a05c91afff68f4bf12aa2780f815877753f8dd354e203e99b9caf8a",
+  },
+  {
+    file: "proton-11.0-arm64ec.tar.zst",
+    sha256: "ceb768396c2d44256518f94ae236f0c1f40738cf050a52e990e2fef67ff161df",
+  },
+];
+
+function sha256File(file) {
+  return new Promise((resolve, reject) => {
+    const hash = createHash("sha256");
+    const stream = createReadStream(file);
+    stream.on("data", (chunk) => hash.update(chunk));
+    stream.on("end", () => resolve(hash.digest("hex")));
+    stream.on("error", reject);
+  });
+}
+
+async function download(url, dest) {
+  const res = await fetch(url, { redirect: "follow" });
+  if (!res.ok) {
+    throw new Error(`HTTP ${res.status} ${res.statusText} for ${url}`);
+  }
+  const fileStream = createWriteStream(dest);
+  await new Promise((resolve, reject) => {
+    res.body.pipe(fileStream);
+    res.body.on("error", reject);
+    fileStream.on("finish", resolve);
+    fileStream.on("error", reject);
+  });
+}
+
+let failed = false;
+for (const asset of ASSETS) {
+  const target = path.join(ASSET_DIR, asset.file);
+  const exists = existsSync(target);
+  if (exists) {
+    const actual = await sha256File(target);
+    if (actual === asset.sha256) {
+      console.log(`ok   ${asset.file} (up to date)`);
+      continue;
+    }
+    console.error(
+      `error ${asset.file}: sha256 mismatch (expected ${asset.sha256}, got ${actual}); delete it and rerun`,
+    );
+    failed = true;
+    continue;
+  }
+
+  const url = `https://github.com/${REPO}/releases/download/${RELEASE_TAG}/${asset.file}`;
+  console.log(`get  ${asset.file} <- ${url}`);
+  await mkdir(path.dirname(target), { recursive: true });
+  const tmp = target + ".part";
+  await download(url, tmp);
+  const actual = await sha256File(tmp);
+  if (actual !== asset.sha256) {
+    console.error(
+      `error ${asset.file}: downloaded sha256 mismatch (expected ${asset.sha256}, got ${actual})`,
+    );
+    failed = true;
+    continue;
+  }
+  await rename(tmp, target);
+  console.log(`okay   ${asset.file} (downloaded)`);
+}
+
+process.exit(failed ? 1 : 0);