only perform guid generation in getter

src/cascadia/LocalTests_SettingsModel/SerializationTests.cpp

@@ -272,7 +272,6 @@ namespace SettingsModelLocalTests
 
         // TODO CARLOS:
         // - temp/DebugBreak is only for testing. Remove after we're done here.
-        // - NiksaShell prints out a guid, when it shouldn't be
         // - BhojwaniShell is missing entirely
         const auto result{ settings->ToJson() };
         const auto temp{ toString(result) };

src/cascadia/TerminalSettingsModel/CascadiaSettings.cpp

@@ -223,11 +223,6 @@ void CascadiaSettings::_ValidateSettings()
     // Make sure to check that profiles exists at all first and foremost:
     _ValidateProfilesExist();
 
-    // Verify all profiles actually had a GUID specified, otherwise generate a
-    // GUID for them. Make sure to do this before de-duping profiles and
-    // checking that the default profile is set.
-    _ValidateProfilesHaveGuid();
-
     // Re-order profiles so that all profiles from the user's settings appear
     // before profiles that _weren't_ in the user profiles.
     _ReorderProfilesToMatchUserSettingsOrder();
@@ -284,19 +279,6 @@ void CascadiaSettings::_ValidateProfilesExist()
     }
 }
 
-// Method Description:
-// - Walks through each profile, and ensures that they had a GUID set at some
-//   point. If the profile did _not_ have a GUID ever set for it, generate a
-//   temporary runtime GUID for it. This validation does not add any warnings.
-void CascadiaSettings::_ValidateProfilesHaveGuid()
-{
-    for (auto profile : _profiles)
-    {
-        auto profileImpl = winrt::get_self<implementation::Profile>(profile);
-        profileImpl->GenerateGuidIfNecessary();
-    }
-}
-
 // Method Description:
 // - Resolves the "defaultProfile", which can be a profile name, to a GUID
 //   and stores it back to the globals.

src/cascadia/TerminalSettingsModel/CascadiaSettings.h

@@ -132,7 +132,6 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
 
         void _ValidateSettings();
         void _ValidateProfilesExist();
-        void _ValidateProfilesHaveGuid();
         void _ValidateDefaultProfileExists();
         void _ValidateNoDuplicateProfiles();
         void _ResolveDefaultProfile();

src/cascadia/TerminalSettingsModel/Profile.cpp

@@ -424,27 +424,6 @@ std::wstring Profile::EvaluateStartingDirectory(const std::wstring& directory)
     }
 }
 
-// Method Description:
-// - If this profile never had a GUID set for it, generate a runtime GUID for
-//   the profile. If a profile had their guid manually set to {0}, this method
-//   will _not_ change the profile's GUID.
-void Profile::GenerateGuidIfNecessary() noexcept
-{
-    if (!_getGuidImpl().has_value())
-    {
-        // Always use the name to generate the temporary GUID. That way, across
-        // reloads, we'll generate the same static GUID.
-        _Guid = Profile::_GenerateGuidForProfile(Name(), Source());
-
-        TraceLoggingWrite(
-            g_hSettingsModelProvider,
-            "SynthesizedGuidForProfile",
-            TraceLoggingDescription("Event emitted when a profile is deserialized without a GUID"),
-            TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-            TelemetryPrivacyDataTag(PDT_ProductAndServicePerformance));
-    }
-}
-
 // Function Description:
 // - Returns true if the given JSON object represents a dynamic profile object.
 //   If it is a dynamic profile object, we should make sure to only layer the

src/cascadia/TerminalSettingsModel/Profile.h

@@ -59,7 +59,6 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
 
         hstring EvaluatedStartingDirectory() const;
         hstring ExpandedBackgroundImagePath() const;
-        void GenerateGuidIfNecessary() noexcept;
         static guid GetGuidOrGenerateForJson(const Json::Value& json) noexcept;
 
         // BackgroundImageAlignment is 1 setting saved as 2 separate values