Fix an issue that causes the fire dialog to show multiple times for t…

…he same website after dismissing it (#3305)

Task/Issue URL: https://app.asana.com/0/1206329551987282/1208180024223015/f

**Description**:
This PR addresses an issue that causes the fire dialog to show multiple times for the same website.

DuckDuckGo/DaxDialogs.swift

@@ -316,6 +316,9 @@ final class DaxDialogs: NewTabDialogSpecProvider, ContextualOnboardingLogic {
 
     func dismiss() {
         settings.isDismissed = true
+        // Reset last shown dialog as we don't have to show it anymore.
+        removeLastShownDaxDialog()
+        removeLastVisitedOnboardingWebsite()
     }
 
     func primeForUse() {
@@ -375,6 +378,7 @@ final class DaxDialogs: NewTabDialogSpecProvider, ContextualOnboardingLogic {
     }
 
     private func removeLastShownDaxDialog() {
+        guard isNewOnboarding else { return }
         settings.lastShownContextualOnboardingDialogType = nil
     }
 
@@ -499,11 +503,6 @@ final class DaxDialogs: NewTabDialogSpecProvider, ContextualOnboardingLogic {
 
     private func nextBrowsingMessageExperiment(privacyInfo: PrivacyInfo) -> BrowsingSpec? {
 
-        if let lastVisitedOnboardingWebsiteURLPath,
-            compareUrls(url1: URL(string: lastVisitedOnboardingWebsiteURLPath), url2: privacyInfo.url) {
-            return lastShownDaxDialog(privacyInfo: privacyInfo)
-        }
-
         func hasTrackers(host: String) -> Bool {
             isFacebookOrGoogle(privacyInfo.url) || isOwnedByFacebookOrGoogle(host) != nil || blockedEntityNames(privacyInfo.trackerInfo) != nil
         }
@@ -513,6 +512,11 @@ final class DaxDialogs: NewTabDialogSpecProvider, ContextualOnboardingLogic {
 
         guard isEnabled, nextHomeScreenMessageOverride == nil else { return nil }
 
+        if let lastVisitedOnboardingWebsiteURLPath,
+            compareUrls(url1: URL(string: lastVisitedOnboardingWebsiteURLPath), url2: privacyInfo.url) {
+            return lastShownDaxDialog(privacyInfo: privacyInfo)
+        }
+
         guard let host = privacyInfo.domain else { return nil }
 
         var spec: BrowsingSpec?

DuckDuckGoTests/DaxDialogTests.swift

@@ -1002,6 +1002,40 @@ final class DaxDialog: XCTestCase {
         XCTAssertEqual(result?.type, .siteOwnedByMajorTracker)
     }
 
+    func testWhenExperimentGroup_AndDismissIsCalled_ThenLastVisitedOnboardingWebsiteAndLastShownDaxDialogAreSetToNil() {
+        // GIVEN
+        let settings = InMemoryDaxDialogsSettings()
+        settings.lastShownContextualOnboardingDialogType = DaxDialogs.BrowsingSpec.fire.type.rawValue
+        settings.lastVisitedOnboardingWebsiteURLPath = "https://www.example.com"
+        let sut = makeExperimentSUT(settings: settings)
+        XCTAssertNotNil(settings.lastShownContextualOnboardingDialogType)
+        XCTAssertNotNil(settings.lastVisitedOnboardingWebsiteURLPath)
+
+        // WHEN
+        sut.dismiss()
+
+        // THEN
+        XCTAssertNil(settings.lastShownContextualOnboardingDialogType)
+        XCTAssertNil(settings.lastVisitedOnboardingWebsiteURLPath)
+    }
+
+    func testWhenExperimentGroup_AndIsEnabledIsFalse_AndReloadWebsite_ThenReturnNilBrowsingSpec() throws {
+        // GIVEN
+        let lastVisitedWebsitePath = "https://www.example.com"
+        let lastVisitedWebsiteURL = try XCTUnwrap(URL(string: lastVisitedWebsitePath))
+        let settings = InMemoryDaxDialogsSettings()
+        settings.lastShownContextualOnboardingDialogType = DaxDialogs.BrowsingSpec.fire.type.rawValue
+        settings.lastVisitedOnboardingWebsiteURLPath = lastVisitedWebsitePath
+        let sut = makeExperimentSUT(settings: settings)
+        sut.dismiss()
+
+        // WHEN
+        let result = sut.nextBrowsingMessageIfShouldShow(for: makePrivacyInfo(url: lastVisitedWebsiteURL))
+
+        // THEN
+        XCTAssertNil(result)
+    }
+
     private func detectedTrackerFrom(_ url: URL, pageUrl: String) -> DetectedRequest {
         let entity = entityProvider.entity(forHost: url.host!)
         return DetectedRequest(url: url.absoluteString,