From f6b2be20793f01a0c0668c285a6826e3be41f49d Mon Sep 17 00:00:00 2001
From: Matt <m22mail@comcast.net>
Date: Mon, 4 Sep 2023 14:52:24 -0400
Subject: [PATCH] Generate Build Constants Button

---
 Editor/Build/BuildProject.cs                  | 36 +++++++++++++++++++
 .../UI/ProjectConfigurationsDrawer.cs         |  6 ++++
 2 files changed, 42 insertions(+)

diff --git a/Editor/Build/BuildProject.cs b/Editor/Build/BuildProject.cs
index e2e8c05..c4af464 100644
--- a/Editor/Build/BuildProject.cs
+++ b/Editor/Build/BuildProject.cs
@@ -78,6 +78,34 @@ public static void ConfigureEditor(string configKey, BuildOptions options = Buil
             );
         }
 
+        /// <summary>
+        /// Ignore the Editor configuration steps and only generate the BuildConstants.cs file,
+        /// to avoid dealing with platform and scene list switching
+        /// </summary>
+        /// <param name="configKey"></param>
+        /// <param name="options"></param>
+        public static void GenerateBuildConstantsOnlyButton(string configKey, BuildOptions options = BuildOptions.None)
+        {
+            DateTime configureTime = DateTime.Now;
+
+            // Clear any old notifications
+            BuildNotificationList.instance.RefreshAll();
+
+            // Report Build Constants generation
+            BuildNotificationList.instance.AddNotification(new BuildNotification(
+                BuildNotification.Category.Notification,
+                "Generating BuildConstants for: ", configKey,
+                true, null));
+
+            // Parse build config
+            BuildSettings.projectConfigurations.ParseKeychain(configKey, out BuildReleaseType releaseType, out BuildPlatform platform, out BuildArchitecture architecture,
+                out BuildScriptingBackend scriptingBackend, out BuildDistribution distribution);
+            string constantsFileLocation = BuildSettings.basicSettings.constantsFileLocation;
+
+            GenerateBuildConstants(releaseType, platform, architecture, scriptingBackend, distribution, configureTime, constantsFileLocation);
+
+        }
+
         public static string GenerateDefaultDefines(BuildReleaseType releaseType, BuildPlatform platform, BuildArchitecture arch,
             BuildScriptingBackend scriptingBackend, BuildDistribution dist)
         {
@@ -265,6 +293,14 @@ private static void ConfigureEnvironment(BuildReleaseType releaseType, BuildPlat
             releaseType.sceneList.Refresh();
         }
 
+        ///Create the buildConstants.cs file
+        private static void GenerateBuildConstants(BuildReleaseType releaseType, BuildPlatform platform, BuildArchitecture architecture,
+            BuildScriptingBackend scriptingBackend, BuildDistribution distribution, DateTime buildTime, string constantsFileLocation)
+        {
+            BuildConstantsGenerator.Generate(buildTime, constantsFileLocation, BuildSettings.productParameters.buildVersion,
+                releaseType, platform, scriptingBackend, architecture, distribution);
+        }
+
         private static void ReplaceFromFile(StringBuilder sb, string keyString, string filename)
         {
             if (sb.ToString().IndexOf(keyString) > -1)
diff --git a/Editor/Build/Settings/UI/ProjectConfigurationsDrawer.cs b/Editor/Build/Settings/UI/ProjectConfigurationsDrawer.cs
index 49099f5..4848f96 100644
--- a/Editor/Build/Settings/UI/ProjectConfigurationsDrawer.cs
+++ b/Editor/Build/Settings/UI/ProjectConfigurationsDrawer.cs
@@ -182,6 +182,12 @@ public override void OnGUI(Rect position, SerializedProperty property, GUIConten
                             }
                             EditorGUI.EndDisabledGroup();
 
+                            if (GUILayout.Button(new GUIContent("Generate Build Constants", "Only generate the BuildConstants.cs file without changing platform."), GUILayout.ExpandWidth(true)))
+                            {
+                                // Generate the Build Constants File
+                                BuildProject.GenerateBuildConstantsOnlyButton(selectedKeyChain.stringValue, buildOptions);
+                            }
+
                             if (GUILayout.Button(new GUIContent("Configure Editor Environment", "Switches platform, refreshes BuildConstants, applies scripting defines and variant settings and sets Build Settings scene list to match the selected build configuration"), GUILayout.ExpandWidth(true)))
                             {
                                 // Update Editor environment settings to match selected build configuration