Add basic update notifications (#9)

src/updater/main.ts

@@ -0,0 +1,98 @@
+/*
+ * SPDX-License-Identifier: GPL-3.0
+ * Vencord Desktop, a desktop app aiming to give you a snappier Discord Experience
+ * Copyright (c) 2023 Vendicated and Vencord contributors
+ */
+
+import { app, BrowserWindow, ipcMain, shell } from "electron";
+import { Settings } from "main/settings";
+import { githubGet, ReleaseData } from "main/utils/vencordLoader";
+import { join } from "path";
+import { SplashProps } from "shared/browserWinProperties";
+import { IpcEvents } from "shared/IpcEvents";
+import { STATIC_DIR } from "shared/paths";
+
+export interface UpdateData {
+    currentVersion: string;
+    latestVersion: string;
+    release: ReleaseData;
+}
+
+let updateData: UpdateData;
+
+ipcMain.handle(IpcEvents.UPDATER_GET_DATA, () => updateData);
+ipcMain.handle(IpcEvents.UPDATER_DOWNLOAD, () => {
+    const { assets } = updateData.release;
+    const url = (() => {
+        switch (process.platform) {
+            case "win32":
+                return assets.find(a => a.name.endsWith(".exe"))!.browser_download_url;
+            case "darwin":
+                return assets.find(a => a.name.endsWith(".dmg"))!.browser_download_url;
+            case "linux":
+                return updateData.release.html_url;
+            default:
+                throw new Error(`Unsupported platform: ${process.platform}`);
+        }
+    })();
+
+    shell.openExternal(url);
+});
+
+ipcMain.handle(IpcEvents.UPDATE_IGNORE, () => {
+    Settings.store.skippedUpdate = updateData.latestVersion;
+});
+
+function isOutdated(oldVersion: string, newVersion: string) {
+    const oldParts = oldVersion.split(".");
+    const newParts = newVersion.split(".");
+
+    if (oldParts.length !== newParts.length)
+        throw new Error(`Incompatible version strings (old: ${oldVersion}, new: ${newVersion})`);
+
+    for (let i = 0; i < oldParts.length; i++) {
+        const oldPart = Number(oldParts[i]);
+        const newPart = Number(newParts[i]);
+
+        if (isNaN(oldPart) || isNaN(newPart))
+            throw new Error(`Invalid version string (old: ${oldVersion}, new: ${newVersion})`);
+
+        if (oldPart < newPart) return true;
+        if (oldPart > newPart) return false;
+    }
+
+    return false;
+}
+
+export async function checkUpdates() {
+    // if (IS_DEV) return;
+    try {
+        const raw = await githubGet("/repos/Vencord/Desktop/releases/latest");
+        const data = JSON.parse(raw.toString("utf-8")) as ReleaseData;
+
+        const oldVersion = app.getVersion();
+        const newVersion = data.tag_name.replace(/^v/, "");
+        if (Settings.store.skippedUpdate !== newVersion && isOutdated(oldVersion, newVersion)) {
+            updateData = {
+                currentVersion: oldVersion,
+                latestVersion: newVersion,
+                release: data
+            };
+
+            openNewUpdateWindow();
+        }
+    } catch (e) {
+        console.error("AppUpdater: Failed to check for updates\n", e);
+    }
+}
+
+function openNewUpdateWindow() {
+    const win = new BrowserWindow({
+        ...SplashProps,
+        webPreferences: {
+            preload: join(__dirname, "updaterPreload.js")
+        }
+    });
+
+    win.loadFile(join(STATIC_DIR, "updater.html"));
+}