[SDK-908] Feature/webview fix (#37)

-  ios build processor now correctly adds WebKit framework dependency

Editor/IOSBuildProcessor.cs

@@ -1,30 +1,63 @@
 #if UNITY_IOS
+using System;
 using System.IO;
+using UnityEditor.Callbacks;
 using UnityEditor;
-using UnityEditor.Build;
-using UnityEditor.Build.Reporting;
-using UnityEditor.iOS.Xcode;
+using UnityEngine;
 
 namespace ReadyPlayerMe.WebView.Editor
 {
-    public class IOSBuildProcessor : IPostprocessBuildWithReport
+    public class IOSBuildProcessor
     {
-        public int callbackOrder => 0;
 
-        public void OnPostprocessBuild(BuildReport report)
+        [PostProcessBuild(100)]
+        public static void OnPostprocessBuild(BuildTarget buildTarget, string path)
         {
-            if (report.summary.platform != BuildTarget.iOS) return;
+            if (buildTarget != BuildTarget.iOS) return;
 
-            var projectPath = $"{report.summary.outputPath}/Unity-iPhone.xcodeproj/project.pbxproj";
+            var projPath = path + "/Unity-iPhone.xcodeproj/project.pbxproj";
+            var type = Type.GetType("UnityEditor.iOS.Xcode.PBXProject, UnityEditor.iOS.Extensions.Xcode");
+            if (type == null)
+            {
+                Debug.LogError("unitywebview: failed to get PBXProject. please install iOS build support.");
+                return;
+            }
+            var src = File.ReadAllText(projPath);
+            var proj = type.GetConstructor(Type.EmptyTypes).Invoke(null);
+            {
+                var method = type.GetMethod("ReadFromString");
+                method.Invoke(proj, new object[] { src });
+            }
+            var target = "";
+            {
+                var method = type.GetMethod("GetUnityFrameworkTargetGuid");
+                target = (string) method.Invoke(proj, null);
+            }
 
-            var pbxProject = new PBXProject();
-            pbxProject.ReadFromFile(projectPath);
-
-            // Main
-            var targetGuid = pbxProject.GetUnityMainTargetGuid();
-            pbxProject.AddFrameworkToProject(targetGuid, "WebKit.framework", false);
-
-            pbxProject.WriteToFile(projectPath);
+            {
+                var method = type.GetMethod("AddFrameworkToProject");
+                method.Invoke(proj, new object[] { target, "WebKit.framework", false });
+            }
+            var cflags = "";
+            if (EditorUserBuildSettings.development)
+            {
+                cflags += " -DUNITYWEBVIEW_DEVELOPMENT";
+            }
+#if UNITYWEBVIEW_IOS_ALLOW_FILE_URLS
+            cflags += " -DUNITYWEBVIEW_IOS_ALLOW_FILE_URLS";
+#endif
+            cflags = cflags.Trim();
+            if (!string.IsNullOrEmpty(cflags))
+            {
+                var method = type.GetMethod("AddBuildProperty", new Type[] { typeof(string), typeof(string), typeof(string) });
+                method.Invoke(proj, new object[] { target, "OTHER_CFLAGS", cflags });
+            }
+            var dst = "";
+            {
+                var method = type.GetMethod("WriteToString");
+                dst = (string) method.Invoke(proj, null);
+            }
+            File.WriteAllText(projPath, dst);
         }
     }
 }