[iOS] Create IsUserEligibleParcelTrackingOptInPrompt util method

This CL creates a util method that will be used to check a
user's eligibility for the parcel tracking opt-in prompt.

Bug: 1473449
Change-Id: I74460cc747f21bc49238d985ce58302d0ca28cbf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4803184
Commit-Queue: Hira Mahmood <hiramahmood@google.com>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1187511}

ios/chrome/browser/parcel_tracking/BUILD.gn

@@ -7,5 +7,12 @@ source_set("util") {
     "parcel_tracking_util.h",
     "parcel_tracking_util.mm",
   ]
-  public_deps = [ "//base" ]
+  deps = [
+    "//base",
+    "//components/prefs",
+    "//components/signin/public/base",
+    "//ios/chrome/browser/shared/model/browser_state",
+    "//ios/chrome/browser/shared/model/prefs:pref_names",
+    "//ios/chrome/browser/signin",
+  ]
 }

ios/chrome/browser/parcel_tracking/DEPS

@@ -0,0 +1,3 @@
+include_rules = [
+  "+ios/chrome/browser/signin",
+]

ios/chrome/browser/parcel_tracking/parcel_tracking_util.h

@@ -7,10 +7,16 @@
 
 #import "base/feature_list.h"
 
+class ChromeBrowserState;
+
 // Feature flag to enable the parcel tracking feature.
 BASE_DECLARE_FEATURE(kIOSParcelTracking);
 
 // Returns true if the parcel tracking feature is enabled.
 bool IsIOSParcelTrackingEnabled();
 
+// Returns true if the user is eligible for the parcel tracking opt-in prompt.
+// The user must have never before seen the prompt and must be signed in.
+bool IsUserEligibleParcelTrackingOptInPrompt(ChromeBrowserState* browser_state);
+
 #endif  // IOS_CHROME_BROWSER_PARCEL_TRACKING_PARCEL_TRACKING_UTIL_H_

ios/chrome/browser/parcel_tracking/parcel_tracking_util.mm

@@ -4,10 +4,33 @@
 
 #import "ios/chrome/browser/parcel_tracking/parcel_tracking_util.h"
 
+#import "components/prefs/pref_service.h"
+#import "components/signin/public/base/consent_level.h"
+#import "ios/chrome/browser/shared/model/browser_state/chrome_browser_state.h"
+#import "ios/chrome/browser/shared/model/prefs/pref_names.h"
+#import "ios/chrome/browser/signin/authentication_service.h"
+#import "ios/chrome/browser/signin/authentication_service_factory.h"
+
 BASE_FEATURE(kIOSParcelTracking,
              "IOSParcelTracking",
              base::FEATURE_DISABLED_BY_DEFAULT);
 
 bool IsIOSParcelTrackingEnabled() {
   return base::FeatureList::IsEnabled(kIOSParcelTracking);
 }
+
+bool IsUserEligibleParcelTrackingOptInPrompt(
+    ChromeBrowserState* browser_state) {
+  PrefService* pref_service = browser_state->GetPrefs();
+  AuthenticationService* authentication_service =
+      AuthenticationServiceFactory::GetForBrowserState(browser_state);
+  if (!authentication_service || !authentication_service->initialized()) {
+    return false;
+  }
+  bool signed_in =
+      authentication_service->HasPrimaryIdentity(signin::ConsentLevel::kSignin);
+  return IsIOSParcelTrackingEnabled() &&
+         !pref_service->GetBoolean(
+             prefs::kIosParcelTrackingOptInPromptDisplayed) &&
+         signed_in;
+}

ios/chrome/browser/shared/model/prefs/browser_prefs.mm

@@ -487,6 +487,9 @@ void RegisterBrowserStatePrefs(user_prefs::PrefRegistrySyncable* registry) {
   // Preferences related to Save to Photos settings.
   registry->RegisterStringPref(prefs::kIosSaveToPhotosDefaultGaiaId,
                                std::string());
+
+  registry->RegisterBooleanPref(prefs::kIosParcelTrackingOptInPromptDisplayed,
+                                false);
 }
 
 // This method should be periodically pruned of year+ old migrations.

ios/chrome/browser/shared/model/prefs/pref_names.cc

@@ -185,6 +185,11 @@ const char kIosMagicStackSegmentationShortcutsImpressionsSinceFreshness[] =
 const char kIosMagicStackSegmentationSafetyCheckImpressionsSinceFreshness[] =
     "ios.magic_stack_segmentation.safety_check_freshness";
 
+// Boolean to represent if the parcel tracking opt-in prompt has been displayed
+// for the user.
+const char kIosParcelTrackingOptInPromptDisplayed[] =
+    "ios.parcel_tracking.opt_in_prompt_displayed";
+
 // The number of consecutive times the user dismissed the password bottom sheet.
 // This gets reset to 0 whenever the user selects a password from the bottom
 // sheet or from the keyboard accessory.

ios/chrome/browser/shared/model/prefs/pref_names.h

@@ -53,6 +53,7 @@ extern const char
     kIosMagicStackSegmentationShortcutsImpressionsSinceFreshness[];
 extern const char
     kIosMagicStackSegmentationSafetyCheckImpressionsSinceFreshness[];
+extern const char kIosParcelTrackingOptInPromptDisplayed[];
 extern const char kIosPasswordBottomSheetDismissCount[];
 extern const char kIosPreRestoreAccountInfo[];
 extern const char kIosPromosManagerActivePromos[];