Add additional build flavours for Vencord Desktop (#765)

src/main/updater/http.ts

@@ -0,0 +1,104 @@
+/*
+ * Vencord, a modification for Discord's desktop app
+ * Copyright (c) 2022 Vendicated and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { VENCORD_USER_AGENT } from "@utils/constants";
+import IpcEvents from "@utils/IpcEvents";
+import { ipcMain } from "electron";
+import { writeFile } from "fs/promises";
+import { join } from "path";
+
+import gitHash from "~git-hash";
+import gitRemote from "~git-remote";
+
+import { get } from "../utils/simpleGet";
+import { calculateHashes, serializeErrors } from "./common";
+
+const API_BASE = `https://api.github.com/repos/${gitRemote}`;
+let PendingUpdates = [] as [string, string][];
+
+async function githubGet(endpoint: string) {
+    return get(API_BASE + endpoint, {
+        headers: {
+            Accept: "application/vnd.github+json",
+            // "All API requests MUST include a valid User-Agent header.
+            // Requests with no User-Agent header will be rejected."
+            "User-Agent": VENCORD_USER_AGENT
+        }
+    });
+}
+
+async function calculateGitChanges() {
+    const isOutdated = await fetchUpdates();
+    if (!isOutdated) return [];
+
+    const res = await githubGet(`/compare/${gitHash}...HEAD`);
+
+    const data = JSON.parse(res.toString("utf-8"));
+    return data.commits.map((c: any) => ({
+        // github api only sends the long sha
+        hash: c.sha.slice(0, 7),
+        author: c.author.login,
+        message: c.commit.message
+    }));
+}
+
+const FILES_TO_DOWNLOAD = [
+    IS_DISCORD_DESKTOP ? "patcher.js" : "vencordDesktopMain.js",
+    "preload.js",
+    IS_DISCORD_DESKTOP ? "renderer.js" : "vencordDesktopRenderer.js",
+    "renderer.css"
+];
+
+async function fetchUpdates() {
+    const release = await githubGet("/releases/latest");
+
+    const data = JSON.parse(release.toString());
+    const hash = data.name.slice(data.name.lastIndexOf(" ") + 1);
+    if (hash === gitHash)
+        return false;
+
+    data.assets.forEach(({ name, browser_download_url }) => {
+        if (FILES_TO_DOWNLOAD.some(s => name.startsWith(s))) {
+            PendingUpdates.push([name, browser_download_url]);
+        }
+    });
+    return true;
+}
+
+async function applyUpdates() {
+    await Promise.all(PendingUpdates.map(
+        async ([name, data]) => writeFile(
+            join(
+                __dirname,
+                IS_VENCORD_DESKTOP
+                    // vencordDesktopRenderer.js -> renderer.js
+                    ? name.replace(/vencordDesktop(\w)/, (_, c) => c.toLowerCase())
+                    : name
+            ),
+            await get(data)
+        )
+    ));
+    PendingUpdates = [];
+    return true;
+}
+
+ipcMain.handle(IpcEvents.GET_HASHES, serializeErrors(calculateHashes));
+ipcMain.handle(IpcEvents.GET_REPO, serializeErrors(() => `https://github.com/${gitRemote}`));
+ipcMain.handle(IpcEvents.GET_UPDATES, serializeErrors(calculateGitChanges));
+ipcMain.handle(IpcEvents.UPDATE, serializeErrors(fetchUpdates));
+ipcMain.handle(IpcEvents.BUILD, serializeErrors(applyUpdates));