feat(DuckDuckGo): [PM-9388] Add new device type for DuckDuckGo browser

* Add new device type for DuckDuckGo browser

* Added feature support property for sync domains

* Added new features

* Added isDuckDuckGo() to CLI

* Addressed PR feedback.

* Renamed new property

* Fixed rename that missed CLI.

apps/web/src/app/core/web-file-download.service.ts

@@ -12,7 +12,7 @@ export class WebFileDownloadService implements FileDownloadService {
   download(request: FileDownloadRequest): void {
     const builder = new FileDownloadBuilder(request);
     const a = window.document.createElement("a");
-    if (!this.platformUtilsService.isSafari()) {
+    if (!this.platformUtilsService.supportsFileDownloads()) {
       a.rel = "noreferrer";
       a.target = "_blank";
     }

apps/web/src/app/core/web-platform-utils.service.spec.ts

@@ -1,5 +1,7 @@
 // FIXME: Update this file to be type safe and remove this and next line
 // @ts-strict-ignore
+import { DeviceType } from "@bitwarden/common/enums";
+
 import { WebPlatformUtilsService } from "./web-platform-utils.service";
 
 describe("Web Platform Utils Service", () => {
@@ -114,4 +116,91 @@ describe("Web Platform Utils Service", () => {
       expect(result).toBe("2022.10.2");
     });
   });
+  describe("getDevice", () => {
+    const originalUserAgent = navigator.userAgent;
+
+    const setUserAgent = (userAgent: string) => {
+      Object.defineProperty(navigator, "userAgent", {
+        value: userAgent,
+        configurable: true,
+      });
+    };
+
+    const setWindowProperties = (props?: Record<string, any>) => {
+      if (!props) {
+        return;
+      }
+      Object.keys(props).forEach((key) => {
+        Object.defineProperty(window, key, {
+          value: props[key],
+          configurable: true,
+        });
+      });
+    };
+
+    afterEach(() => {
+      // Reset to original after each test
+      setUserAgent(originalUserAgent);
+    });
+
+    const testData: {
+      userAgent: string;
+      expectedDevice: DeviceType;
+      windowProps?: Record<string, any>;
+    }[] = [
+      {
+        // DuckDuckGo macoOS browser v1.13
+        userAgent:
+          "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Safari/605.1.15 Ddg/18.3.1",
+        expectedDevice: DeviceType.DuckDuckGoBrowser,
+      },
+      // DuckDuckGo Windows browser v0.109.7, which does not present the Ddg suffix and is therefore detected as Edge
+      {
+        userAgent:
+          "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36 Edg/135.0.0.0",
+        expectedDevice: DeviceType.EdgeBrowser,
+      },
+      {
+        userAgent:
+          "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36",
+        expectedDevice: DeviceType.ChromeBrowser,
+        windowProps: { chrome: {} }, // set window.chrome = {} to simulate Chrome
+      },
+      {
+        userAgent:
+          "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0",
+        expectedDevice: DeviceType.FirefoxBrowser,
+      },
+      {
+        userAgent:
+          "Mozilla/5.0 (Macintosh; Intel Mac OS X 13_0) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Safari/605.1.15",
+        expectedDevice: DeviceType.SafariBrowser,
+      },
+      {
+        userAgent:
+          "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Edg/120.0.0.0 Chrome/120.0.0.0 Safari/537.36",
+        expectedDevice: DeviceType.EdgeBrowser,
+      },
+      {
+        userAgent:
+          "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.5481.65 Safari/537.36 OPR/95.0.4635.46",
+        expectedDevice: DeviceType.OperaBrowser,
+      },
+      {
+        userAgent:
+          "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.57 Safari/537.36 Vivaldi/6.5.3206.48",
+        expectedDevice: DeviceType.VivaldiBrowser,
+      },
+    ];
+
+    test.each(testData)(
+      "returns $expectedDevice for User-Agent: $userAgent",
+      ({ userAgent, expectedDevice, windowProps }) => {
+        setUserAgent(userAgent);
+        setWindowProperties(windowProps);
+        const result = webPlatformUtilsService.getDevice();
+        expect(result).toBe(expectedDevice);
+      },
+    );
+  });
 });

apps/web/src/app/core/web-platform-utils.service.ts

@@ -34,6 +34,13 @@ export class WebPlatformUtilsService implements PlatformUtilsService {
       this.browserCache = DeviceType.EdgeBrowser;
     } else if (navigator.userAgent.indexOf(" Vivaldi/") !== -1) {
       this.browserCache = DeviceType.VivaldiBrowser;
+    } else if (
+      // We are only detecting DuckDuckGo browser on macOS currently, as
+      // it is not presenting the Ddg suffix on Windows. DuckDuckGo users
+      // on Windows will be detected as Edge.
+      navigator.userAgent.indexOf("Ddg") !== -1
+    ) {
+      this.browserCache = DeviceType.DuckDuckGoBrowser;
     } else if (
       navigator.userAgent.indexOf(" Safari/") !== -1 &&
       navigator.userAgent.indexOf("Chrome") === -1
@@ -83,6 +90,10 @@ export class WebPlatformUtilsService implements PlatformUtilsService {
     return this.getDevice() === DeviceType.SafariBrowser;
   }
 
+  isWebKit(): boolean {
+    return true;
+  }
+
   isMacAppStore(): boolean {
     return false;
   }
@@ -120,6 +131,15 @@ export class WebPlatformUtilsService implements PlatformUtilsService {
     return true;
   }
 
+  supportsAutofill(): boolean {
+    return false;
+  }
+
+  // Safari support for blob downloads is inconsistent and requires workarounds
+  supportsFileDownloads(): boolean {
+    return !(this.getDevice() === DeviceType.SafariBrowser);
+  }
+
   showToast(
     type: "error" | "success" | "warning" | "info",
     title: string,