fix(keyboard): support OnePlus PLB110 fallback

src/utils/__tests__/platform-detect.test.ts

@@ -1,23 +1,52 @@
 import { describe, expect, it } from "vitest";
 
-import { PlatformDetector } from "../platform-detect";
+import {
+  isOnePlusKeyboardFallbackDevice,
+  PlatformDetector,
+} from "../platform-detect";
+
+function createOnePlusFacebookUa(model: string): string {
+  return (
+    `Mozilla/5.0 (Linux; Android 15; ${model} Build/AP3A.240617.008; wv) ` +
+    "AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 " +
+    "Chrome/126.0.0.0 Mobile Safari/537.36 FBAN/FB4A"
+  );
+}
 
 describe("PlatformDetector", () => {
   it("treats OnePlus PKC110 as an OPPO-family keyboard fallback device", () => {
-    const ua =
-      "Mozilla/5.0 (Linux; Android 15; OnePlus PKC110 Build/AP3A.240617.008; wv) " +
-      "AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 " +
-      "Chrome/126.0.0.0 Mobile Safari/537.36 FBAN/FB4A";
+    const ua = createOnePlusFacebookUa("PKC110");
 
+    expect(
+      isOnePlusKeyboardFallbackDevice({
+        model: "PKC110",
+        vendor: "OnePlus",
+      }),
+    ).toBe(true);
+    expect(PlatformDetector.isOppoFamilyDevice(ua)).toBe(true);
+  });
+
+  it("treats OnePlus PLB110 as an OPPO-family keyboard fallback device", () => {
+    const ua = createOnePlusFacebookUa("PLB110");
+
+    expect(
+      isOnePlusKeyboardFallbackDevice({
+        model: "PLB110",
+        vendor: "OnePlus",
+      }),
+    ).toBe(true);
     expect(PlatformDetector.isOppoFamilyDevice(ua)).toBe(true);
   });
 
   it("does not treat other OnePlus models as OPPO-family fallback devices", () => {
-    const ua =
-      "Mozilla/5.0 (Linux; Android 15; NE2210 Build/AP3A.240617.008; wv) " +
-      "AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 " +
-      "Chrome/126.0.0.0 Mobile Safari/537.36 FBAN/FB4A";
+    const ua = createOnePlusFacebookUa("NE2210");
 
+    expect(
+      isOnePlusKeyboardFallbackDevice({
+        model: "NE2210",
+        vendor: "OnePlus",
+      }),
+    ).toBe(false);
     expect(PlatformDetector.isOppoFamilyDevice(ua)).toBe(false);
   });
 

src/utils/platform-detect.ts

@@ -1,5 +1,7 @@
 import { UAParser } from "ua-parser-js";
 
+const ONEPLUS_KEYBOARD_FALLBACK_MODELS = new Set(["PKC110", "PLB110"]);
+
 export type PlatformName = "ios" | "android" | "desktop" | "unknown";
 
 export interface PlatformInfo {
@@ -98,7 +100,10 @@ export class PlatformDetector {
       `${info.deviceVendor} ${info.userAgent}`,
     );
     if (isOnePlusFamily) {
-      return /\bPKC110\b/i.test(`${info.deviceModel} ${info.userAgent}`);
+      return isOnePlusKeyboardFallbackDevice({
+        model: info.deviceModel,
+        vendor: info.deviceVendor,
+      });
     }
     return /\b(OPPO|OPlus|ColorOS|CPH\d{3,})\b/i.test(target);
   }
@@ -114,3 +119,12 @@ export class PlatformDetector {
     return navigator.platform === "MacIntel" && (navigator.maxTouchPoints ?? 0) > 1;
   }
 }
+
+export function isOnePlusKeyboardFallbackDevice(
+  device: { model: string; vendor: string },
+): boolean {
+  if (!/\bOnePlus\b/i.test(device.vendor)) return false;
+  return ONEPLUS_KEYBOARD_FALLBACK_MODELS.has(
+    device.model.trim().toUpperCase(),
+  );
+}