make spellcheck use all system locales

src/main/ipc.ts

@@ -4,7 +4,7 @@
  * Copyright (c) 2023 Vendicated and Vencord contributors
  */
 
-import { app, dialog, ipcMain, shell } from "electron";
+import { app, dialog, ipcMain, session, shell } from "electron";
 import { existsSync, readFileSync, watch } from "fs";
 import { open, readFile } from "fs/promises";
 import { join } from "path";
@@ -60,6 +60,14 @@ ipcMain.handle(IpcEvents.CLOSE, e => {
     e.sender.close();
 });
 
+ipcMain.handle(IpcEvents.SPELLCHECK_SET_LANGUAGES, (_, languages: string[]) => {
+    const ses = session.defaultSession;
+
+    const available = ses.availableSpellCheckerLanguages;
+    const applicable = languages.filter(l => available.includes(l)).slice(0, 3);
+    if (applicable.length) ses.setSpellCheckerLanguages(applicable);
+});
+
 ipcMain.handle(IpcEvents.SELECT_VENCORD_DIR, async () => {
     const res = await dialog.showOpenDialog(mainWin!, {
         properties: ["openDirectory"]

src/preload/VencordDesktopNative.ts

@@ -23,6 +23,10 @@ export const VencordDesktopNative = {
         get: () => sendSync<Settings>(IpcEvents.GET_SETTINGS),
         set: (settings: Settings, path?: string) => invoke<void>(IpcEvents.SET_SETTINGS, settings, path)
     },
+    spellcheck: {
+        setLanguages: (languages: readonly string[]) => invoke<void>(IpcEvents.SPELLCHECK_SET_LANGUAGES, languages)
+        // todo: perhaps add ways to learn words
+    },
     win: {
         focus: () => invoke<void>(IpcEvents.FOCUS)
     }

src/preload/index.ts

@@ -39,5 +39,6 @@ if (IS_DEV) {
         document.getElementById("vcd-css-core")!.textContent = readFileSync(rendererCss, "utf-8");
     });
 }
-
 // #endregion
+
+VencordDesktopNative.spellcheck.setLanguages(window.navigator.languages);

src/shared/IpcEvents.ts

@@ -25,5 +25,7 @@ export const enum IpcEvents {
     UPDATER_DOWNLOAD = "VCD_UPDATER_DOWNLOAD",
     UPDATE_IGNORE = "VCD_UPDATE_IGNORE",
 
+    SPELLCHECK_SET_LANGUAGES = "VCD_SPELLCHECK_SET_LANGUAGES",
+
     CLOSE = "VCD_CLOSE"
 }