rework error handling & presentation

apps/desktop/desktop_native/chromium_importer/src/chromium/platform/macos.rs

@@ -15,6 +15,17 @@ pub mod sandbox {
     use anyhow::{anyhow, Result};
     use serde::{Deserialize, Serialize};
 
+    // Before requesting access outside of sandbox, determine if browser is actually installed
+    const BROWSER_BUNDLE_IDS: &[(&str, &str)] = &[
+        ("Chrome", "com.google.Chrome"),
+        ("Chromium", "org.chromium.Chromium"),
+        ("Microsoft Edge", "com.microsoft.edgemac"),
+        ("Brave", "com.brave.Browser"),
+        ("Arc", "company.thebrowser.Browser"),
+        ("Opera", "com.operasoftware.Opera"),
+        ("Vivaldi", "com.vivaldi.Vivaldi"),
+    ];
+
     #[derive(Debug, Deserialize)]
     #[serde(tag = "type")]
     enum CommandResult<T> {
@@ -61,6 +72,13 @@ pub mod sandbox {
                 .find(|b| b.name == browser_name)
                 .ok_or_else(|| anyhow!("Unsupported browser: {}", browser_name))?;
 
+            if !is_browser_installed(browser_name).await? {
+                return Err(anyhow!(
+                    "chromiumImporterBrowserNotInstalled:{}",
+                    browser_name
+                ));
+            }
+
             // For macOS, data_dir is always a single-element array
             let relative_path = config
                 .data_dir
@@ -163,6 +181,44 @@ pub mod sandbox {
             });
         }
     }
+
+    async fn is_browser_installed(browser_name: &str) -> Result<bool> {
+        let bundle_id = BROWSER_BUNDLE_IDS
+            .iter()
+            .find(|(name, _)| *name == browser_name)
+            .map(|(_, id)| *id);
+
+        let bundle_id = match bundle_id {
+            Some(id) => id,
+            None => return Ok(true),
+        };
+
+        let input = CommandInput {
+            namespace: "chromium_importer".to_string(),
+            command: "check_browser_installed".to_string(),
+            params: serde_json::json!({
+                "bundleId": bundle_id,
+            }),
+        };
+
+        let output = desktop_objc::run_command(serde_json::to_string(&input)?)
+            .await
+            .map_err(|e| anyhow!("Failed to call ObjC command: {}", e))?;
+
+        let result: CommandResult<CheckBrowserInstalledResponse> = serde_json::from_str(&output)
+            .map_err(|e| anyhow!("Failed to parse ObjC response: {}", e))?;
+
+        match result {
+            CommandResult::Success { value } => Ok(value.is_installed),
+            CommandResult::Error { error } => Err(anyhow!("{}", error)),
+        }
+    }
+
+    #[derive(Debug, Deserialize)]
+    struct CheckBrowserInstalledResponse {
+        #[serde(rename = "isInstalled")]
+        is_installed: bool,
+    }
 }
 
 //

apps/desktop/desktop_native/objc/src/native/chromium_importer/browser_access_manager.m

@@ -14,7 +14,7 @@
 }
 
 - (NSString *)requestAccessToBrowserDir:(NSString *)browserName relativePath:(NSString *)relativePath {
-    
+
     if (!relativePath) {
         return nil;
     }
@@ -53,14 +53,7 @@
 
     NSURL *localStatePath = [selectedURL URLByAppendingPathComponent:@"Local State"];
     if (![[NSFileManager defaultManager] fileExistsAtPath:localStatePath.path]) {
-        NSAlert *alert = [[NSAlert alloc] init];
-        alert.messageText = @"Invalid Folder";
-        alert.informativeText = [NSString stringWithFormat:
-            @"The selected folder doesn't appear to be a valid %@ data directory. Please select the correct folder.",
-            browserName];
-        alert.alertStyle = NSAlertStyleWarning;
-        [alert runModal];
-
+        // Invalid directory selected caller will handle
         return nil;
     }
 

apps/desktop/desktop_native/objc/src/native/chromium_importer/commands/check_browser_installed.h

@@ -0,0 +1,8 @@
+#ifndef CHECK_BROWSER_INSTALLED_H
+#define CHECK_BROWSER_INSTALLED_H
+
+#import <Foundation/Foundation.h>
+
+void checkBrowserInstalledCommand(void *context, NSDictionary *params);
+
+#endif

apps/desktop/desktop_native/objc/src/native/chromium_importer/commands/check_browser_installed.m

@@ -0,0 +1,29 @@
+#import <Foundation/Foundation.h>
+#import <CoreServices/CoreServices.h>
+#import "../../interop.h"
+#import "check_browser_installed.h"
+
+void checkBrowserInstalledCommand(void* context, NSDictionary *params) {
+  NSString *bundleId = params[@"bundleId"];
+
+  if (!bundleId) {
+    return _return(context, _error(@"Missing required parameter: bundleId"));
+  }
+
+  CFURLRef appURL = NULL;
+  OSStatus status = LSFindApplicationForInfo(
+    kLSUnknownCreator,
+    (__bridge CFStringRef)bundleId,
+    NULL,
+    NULL,
+    &appURL
+  );
+
+  BOOL isInstalled = (status == noErr && appURL != NULL);
+
+  if (appURL != NULL) {
+    CFRelease(appURL);
+  }
+
+  _return(context, _success(@{@"isInstalled": @(isInstalled)}));
+}

apps/desktop/desktop_native/objc/src/native/chromium_importer/commands/request_access.m

@@ -15,7 +15,7 @@ void requestAccessCommand(void* context, NSDictionary *params) {
   NSString *bookmarkData = [manager requestAccessToBrowserDir:browserName relativePath:relativePath];
 
   if (bookmarkData == nil) {
-    return _return(context, _error(@"User denied access or selected an invalid browser directory"));
+    return _return(context, _error(@"browserAccessDenied"));
   }
 
   _return(context, _success(@{@"bookmark": bookmarkData}));

apps/desktop/desktop_native/objc/src/native/chromium_importer/run_chromium_command.m

@@ -3,6 +3,7 @@
 #import "commands/has_stored_access.h"
 #import "commands/start_access.h"
 #import "commands/stop_access.h"
+#import "commands/check_browser_installed.h"
 #import "../interop.h"
 #import "../utils.h"
 #import "run_chromium_command.h"
@@ -19,6 +20,8 @@ void runChromiumCommand(void* context, NSDictionary *input) {
     return startAccessCommand(context, params);
   } else if ([command isEqual:@"stop_access"]) {
     return stopAccessCommand(context, params);
+  } else if ([command isEqual:@"check_browser_installed"]) {
+    return checkBrowserInstalledCommand(context, params);
   }
 
   _return(context, _error([NSString stringWithFormat:@"Unknown command: %@", command]));

apps/desktop/src/app/tools/import/import-desktop.component.ts

@@ -61,8 +61,26 @@ export class ImportDesktopComponent {
     try {
       // Request browser access (required for sandboxed builds, no-op otherwise)
       await ipc.tools.chromiumImporter.requestBrowserAccess(browser);
-    } catch {
-      throw new Error(this.i18nService.t("browserAccessDenied"));
+    } catch (error) {
+      const rawMessage = error instanceof Error ? error.message : "";
+
+      // Check verbose error chain for specific i18n key indicating browser not installed
+      const browserNotInstalledMatch = rawMessage.match(
+        /chromiumImporterBrowserNotInstalled:([^:]+)/,
+      );
+      let message: string;
+
+      if (browserNotInstalledMatch) {
+        message = this.i18nService.t(
+          "chromiumImporterBrowserNotInstalled",
+          browserNotInstalledMatch[1],
+        );
+      } else {
+        // Invalid folder, explicit permission denial, or system error
+        message = this.i18nService.t("browserAccessDenied");
+      }
+
+      throw new Error(message);
     }
     return ipc.tools.chromiumImporter.getAvailableProfiles(browser);
   }

apps/desktop/src/locales/en/messages.json

@@ -4299,5 +4299,14 @@
   },
   "sessionTimeoutSettingsSetUnlockMethodToChangeTimeoutAction": {
     "message": "Set an unlock method to change your timeout action"
+  },
+  "chromiumImporterBrowserNotInstalled": {
+    "message": "$BROWSER$ is not installed. Please install $BROWSER$ before importing passwords from it.",
+    "placeholders": {
+      "browser": {
+        "content": "$1",
+        "example": "Chrome"
+      }
+    }
   }
 }