Auto-translate, proxy-aware network, update check, uninstall cleanup, zh installer

Renderer / plugin:
- Auto-translate new messages only (per-channel baseline; never retroactive),
  with built-in skip-same-language (CJK/Cyrillic script detection in shared/language.js).
- Move all toggles into the settings page; remove the floating ⚙ menu entirely.
- Persistent translation cache (loads on start, debounced save, size-capped).
- Single-pass DOM maintenance: query visible messages once per tick and share.

Main process:
- Route provider/update requests through Electron net.fetch so they honor the
  system/Discord proxy (fixes "TypeError: fetch failed" for proxied users);
  fall back to global fetch. Clear Chinese network-failure messages.
- 30s translate timeout with a friendly auto-cancel message.
- GitHub release update check + in-app notice with a download link.

Uninstall:
- Wipe the stored config (settings.json, api-keys.json, cache.json) on uninstall
  across the JS path, the Go installer, and the PowerShell uninstaller; tests use a
  temp config dir so they never touch real user data.

Windows installer:
- Chinese UI with Microsoft YaHei font; larger type, separators, blurple primary button.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

Author: 2 people

installer/internal/core/core.go

@@ -28,7 +28,7 @@ var (
 	vanillaRe  = regexp.MustCompile(`^\s*module\.exports\s*=\s*require\(["']\./core\.asar["']\);\s*$`)
 )
 
-// DiscordBaseDir returns the platform Discord user-data directory.
+// DiscordBaseDir returns the platform Discord modules directory (Local on Windows).
 func DiscordBaseDir() string {
 	if v := os.Getenv("LOCALAPPDATA"); v != "" {
 		return filepath.Join(v, "Discord")
@@ -37,6 +37,20 @@ func DiscordBaseDir() string {
 	return filepath.Join(home, "AppData", "Local", "Discord")
 }
 
+// ConfigStoreDir returns the plugin's config directory (settings.json, api-keys.json,
+// cache.json). It lives under Electron's userData dir (Roaming on Windows), which is
+// NOT the same as the Discord modules dir (Local) used for patching.
+func ConfigStoreDir() string {
+	if v := os.Getenv("BABEL_CONFIG_DIR"); v != "" {
+		return v
+	}
+	if v := os.Getenv("APPDATA"); v != "" {
+		return filepath.Join(v, "discord", PayloadDirName)
+	}
+	home, _ := os.UserHomeDir()
+	return filepath.Join(home, "AppData", "Roaming", "discord", PayloadDirName)
+}
+
 func fileExists(p string) bool {
 	_, err := os.Stat(p)
 	return err == nil
@@ -231,5 +245,13 @@ func Uninstall(baseDir string) (string, error) {
 			}
 		}
 	}
+
+	// Wipe the user's stored config (settings, API keys, cache) so nothing is left behind.
+	if store := ConfigStoreDir(); fileExists(store) {
+		if err := os.RemoveAll(store); err == nil {
+			changed++
+		}
+	}
+
 	return fmt.Sprintf("Removed Babel from %d desktop core item(s).", changed), nil
 }

installer/internal/core/core_test.go

@@ -54,6 +54,15 @@ func TestResolveCoreDirPicksNewestVersion(t *testing.T) {
 
 func TestInstallThenUninstallRoundTrips(t *testing.T) {
 	base := fakeDiscord(t, "1.0.0")
+	// Redirect the config store to a temp dir so the test never deletes the real
+	// user config, and so we can assert uninstall wipes it.
+	configStore := filepath.Join(t.TempDir(), "babel-store")
+	t.Setenv("BABEL_CONFIG_DIR", configStore)
+	if err := os.MkdirAll(configStore, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	write(t, filepath.Join(configStore, "api-keys.json"), "{}")
+
 	core, _ := ResolveCoreDir(base)
 	indexPath := filepath.Join(core, "index.js")
 
@@ -88,6 +97,9 @@ func TestInstallThenUninstallRoundTrips(t *testing.T) {
 	if _, err := os.Stat(filepath.Join(core, PayloadDirName)); err == nil {
 		t.Fatal("payload not removed")
 	}
+	if _, err := os.Stat(configStore); err == nil {
+		t.Fatal("config store (api keys / settings) not removed on uninstall")
+	}
 }
 
 func TestInstallRefusesUnknownIndex(t *testing.T) {

installer/main.go

@@ -2,11 +2,13 @@
 // the Vencord installer approach. The plugin payload is embedded into the exe, so
 // it is a single self-contained file with no Node.js requirement.
 //
-// The GUI text is English on purpose: Dear ImGui's default font has no CJK glyphs.
+// The UI is Chinese; we load Microsoft YaHei (msyh.ttc, shipped with Windows) so
+// Dear ImGui can render CJK glyphs — its default font cannot.
 package main
 
 import (
 	"embed"
+	"image/color"
 	"io/fs"
 
 	"github.com/AllenDang/giu"
@@ -17,8 +19,8 @@ import (
 //go:embed all:payload
 var payloadFS embed.FS
 
-var status = "Click Install to add the Babel plugin to Discord.\n" +
-	"After installing or removing, fully quit Discord (tray icon > Quit Discord) and reopen it."
+var status = "点击「安装」即可把 Babel 翻译插件装进 Discord。\n" +
+	"安装或卸载后，请彻底退出 Discord（托盘图标 > 退出 Discord）再重新打开。"
 
 func payloadRoot() fs.FS {
 	sub, err := fs.Sub(payloadFS, "payload")
@@ -31,38 +33,60 @@ func payloadRoot() fs.FS {
 func runInstall() {
 	msg, err := core.Install(core.DiscordBaseDir(), payloadRoot())
 	if err != nil {
-		status = "Install failed:\n" + err.Error()
+		status = "安装失败：\n" + err.Error()
 	} else {
-		status = msg + "\n\nNow fully quit Discord (tray > Quit Discord) and reopen it."
+		status = msg + "\n\n现在请彻底退出 Discord（托盘 > 退出 Discord）再重新打开。"
 	}
 	giu.Update()
 }
 
 func runUninstall() {
 	msg, err := core.Uninstall(core.DiscordBaseDir())
 	if err != nil {
-		status = "Uninstall failed:\n" + err.Error()
+		status = "卸载失败：\n" + err.Error()
 	} else {
-		status = msg + "\n\nRestart Discord."
+		status = msg + "\n\n请重启 Discord。"
 	}
 	giu.Update()
 }
 
+// Discord brand blurple, used for the primary (Install) button.
+var (
+	blurple        = color.RGBA{R: 0x58, G: 0x65, B: 0xF2, A: 0xff}
+	blurpleHovered = color.RGBA{R: 0x4a, G: 0x55, B: 0xd0, A: 0xff}
+	blurpleActive  = color.RGBA{R: 0x40, G: 0x49, B: 0xb8, A: 0xff}
+)
+
 func loop() {
 	giu.SingleWindow().Layout(
-		giu.Label("Babel · Discord Translator"),
-		giu.Label("Install or remove the plugin. No Node.js required."),
 		giu.Dummy(0, 8),
+		giu.Label("Babel · Discord 翻译插件"),
+		giu.Label("一键为 Discord 安装 / 卸载翻译插件，无需 Node.js。").Wrapped(true),
+		giu.Dummy(0, 12),
+		giu.Separator(),
+		giu.Dummy(0, 16),
 		giu.Row(
-			giu.Button("Install").OnClick(runInstall).Size(170, 38),
-			giu.Button("Uninstall").OnClick(runUninstall).Size(170, 38),
+			giu.Style().
+				SetColor(giu.StyleColorButton, blurple).
+				SetColor(giu.StyleColorButtonHovered, blurpleHovered).
+				SetColor(giu.StyleColorButtonActive, blurpleActive).
+				To(
+					giu.Button("安装").OnClick(runInstall).Size(190, 46),
+				),
+			giu.Button("卸载").OnClick(runUninstall).Size(190, 46),
 		),
+		giu.Dummy(0, 16),
+		giu.Separator(),
 		giu.Dummy(0, 10),
 		giu.Label(status).Wrapped(true),
 	)
 }
 
 func main() {
-	wnd := giu.NewMasterWindow("Babel Installer", 500, 340, giu.MasterWindowFlagsNotResizable)
+	wnd := giu.NewMasterWindow("Babel 安装器", 500, 360, giu.MasterWindowFlagsNotResizable)
+	// Microsoft YaHei ships with Windows and carries the CJK glyphs ImGui's default
+	// font lacks. giu auto-registers the strings used below, so the needed glyphs
+	// are rasterized; the larger size also makes the UI look cleaner.
+	giu.Context.FontAtlas.SetDefaultFont("msyh.ttc", 18)
 	wnd.Run(loop)
 }

scripts/desktop-core-action.js

@@ -60,12 +60,46 @@ function uninstallDiscordMod(options = {}) {
     }
   }
 
+  // Also wipe the user's stored config (settings.json, api-keys.json, cache.json) so
+  // uninstalling leaves nothing behind — no saved API keys, no preferences. Opt out
+  // with { keepConfig: true }.
+  let configRemoved = false;
+  if (!options.keepConfig) {
+    const storeDir = configStoreDir(options);
+    if (fs.existsSync(storeDir)) {
+      fs.rmSync(storeDir, { recursive: true, force: true });
+      configRemoved = true;
+      changed += 1;
+    }
+  }
+
   return {
     coreDirs,
-    changed
+    changed,
+    configRemoved
   };
 }
 
+// The plugin stores its config under Electron's userData dir, which is NOT the same
+// as the Discord modules dir on Windows (Roaming vs Local), so resolve it separately.
+function discordUserDataDir(options = {}) {
+  if (options.userDataDir) {
+    return path.resolve(options.userDataDir);
+  }
+  if (process.platform === "win32") {
+    const appData = process.env.APPDATA || path.join(os.homedir(), "AppData", "Roaming");
+    return path.join(appData, "discord");
+  }
+  if (process.platform === "darwin") {
+    return path.join(os.homedir(), "Library", "Application Support", "discord");
+  }
+  return path.join(process.env.XDG_CONFIG_HOME || path.join(os.homedir(), ".config"), "discord");
+}
+
+function configStoreDir(options = {}) {
+  return path.join(discordUserDataDir(options), PAYLOAD_DIR_NAME);
+}
+
 function resolveDiscordCoreDir(options = {}) {
   const coreDirs = resolveAllDiscordCoreDirs(options);
   if (coreDirs.length === 0) {
@@ -283,5 +317,6 @@ module.exports = {
   installDiscordMod,
   uninstallDiscordMod,
   resolveAllDiscordCoreDirs,
-  resolveDiscordCoreDir
+  resolveDiscordCoreDir,
+  configStoreDir
 };

scripts/windows/Uninstall-Babel.ps1

@@ -54,4 +54,12 @@ if (Test-Path $BaseDir) {
     }
 }
 
+# Wipe stored config (settings, API keys, cache) so nothing is left behind. This
+# lives under Electron's userData dir (Roaming), not the modules dir (Local).
+$configStore = Join-Path (Join-Path $env:APPDATA "discord") $PayloadDirName
+if (Test-Path $configStore) {
+  Remove-Item -Recurse -Force $configStore
+  $script:changed++
+}
+
 Write-Host "Removed Babel from $changed desktop core item(s). Restart Discord."