[iOS][SK] Adds errors alert util

Adds an util that contains alerts for  shareKit flows.

Bug: 375587446
Change-Id: I64b17a0fdf42c9d7e759ca60c4cad58fbdd210ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5993850


Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Ewann Pellé <ewannpv@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1378936}

ios/chrome/browser/share_kit/ui/BUILD.gn

+# Copyright 2024 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+source_set("ui") {
+  sources = [
+    "share_kit_errors_alert_util.h",
+    "share_kit_errors_alert_util.mm",
+  ]
+  deps = [
+    "//base",
+    "//ios/chrome/app/strings",
+    "//ui/base",
+  ]
+}

ios/chrome/browser/share_kit/ui/OWNERS

+ewannpv@chromium.org

ios/chrome/browser/share_kit/ui/share_kit_errors_alert_util.h

+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_SHARE_KIT_UI_SHARE_KIT_ERRORS_ALERT_UTIL_H_
+#define IOS_CHROME_BROWSER_SHARE_KIT_UI_SHARE_KIT_ERRORS_ALERT_UTIL_H_
+
+#import <UIKit/UIKit.h>
+
+namespace share_kit {
+
+// Returns the alert displayed when the shared link is invalid.
+UIAlertController* InvalidLinkAlert();
+
+}  // namespace share_kit
+
+#endif  // IOS_CHROME_BROWSER_SHARE_KIT_UI_SHARE_KIT_ERRORS_ALERT_UTIL_H_

ios/chrome/browser/share_kit/ui/share_kit_errors_alert_util.mm

+// Copyright 2024 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/share_kit/ui/share_kit_errors_alert_util.h"
+
+#import "base/strings/sys_string_conversions.h"
+#import "ios/chrome/grit/ios_strings.h"
+#import "ui/base/l10n/l10n_util.h"
+
+namespace share_kit {
+
+namespace {
+
+// Returns an UIAlertController for the given parameters.
+UIAlertController* ConfigureAlertController(
+    int title,
+    int message,
+    int action_title,
+    void (^action_handler)(UIAlertAction*)) {
+  UIAlertController* alert = [UIAlertController
+      alertControllerWithTitle:l10n_util::GetNSString(title)
+                       message:l10n_util::GetNSString(message)
+                preferredStyle:UIAlertControllerStyleAlert];
+
+  UIAlertAction* action =
+      [UIAlertAction actionWithTitle:l10n_util::GetNSString(action_title)
+                               style:UIAlertActionStyleDefault
+                             handler:action_handler];
+  [alert addAction:action];
+  return alert;
+}
+
+}  // namespace
+
+UIAlertController* InvalidLinkAlert() {
+  return ConfigureAlertController(
+      IDS_IOS_SHARE_KIT_JOIN_ALERT_EXPIRED_TITLE,
+      IDS_IOS_SHARE_KIT_JOIN_ALERT_EXPIRED_MESSAGE,
+      IDS_IOS_SHARE_KIT_JOIN_ALERT_EXPIRED_ACTION_TITLE,
+      /*action_handler*/ nil);
+}
+
+}  // namespace share_kit