feat: add GoogleServices file and update pbxproj file

packages/flutterfire_cli/lib/src/commands/config.dart

@@ -16,6 +16,8 @@
  */
 
 import 'package:ansi_styles/ansi_styles.dart';
+import 'package:path/path.dart' as path;
+import 'dart:io';
 
 import '../common/platform.dart';
 import '../common/strings.dart';
@@ -199,7 +201,7 @@ class ConfigCommand extends FlutterFireCommand {
         if (!done) {
           return 'Creating new Firebase project ${AnsiStyles.cyan(newProjectId)}...';
         }
-        return 'New Firebase project ${AnsiStyles.cyan(newProjectId)} created succesfully.';
+        return 'New Firebase project ${AnsiStyles.cyan(newProjectId)} created successfully.';
       },
     );
     final newProject = await firebase.createProject(
@@ -395,6 +397,34 @@ class ConfigCommand extends FlutterFireCommand {
       );
     }
 
+    if (iosOptions != null) {
+      final googleServiceInfoFile = path.join(flutterApp!.iosDirectory.path, 'Runner',
+          iosOptions.optionsSourceFileName);
+
+      final file = File(googleServiceInfoFile);    
+
+      await file.writeAsString(iosOptions.optionsSourceContent);
+      //check exists here. write if not.
+
+      final pathToScript = path.split(Platform.script.toFilePath());
+
+      final sourceDirIndex = pathToScript.indexOf('.dart_tool');
+
+      final listToPbxScriptDir = pathToScript.sublist(0, sourceDirIndex);
+
+      final pathToPbxScript = path.joinAll([...listToPbxScriptDir, 'scripts', 'set_ios_pbxproj_file.rb']);
+
+      final xcodeProjFilePath = path.join(flutterApp!.iosDirectory.path, 'Runner.xcodeproj');
+
+
+      //TODO -check if google file already exists in project.pbxproj (update if not) & check if google file exists (update if not). 
+      if (Platform.isMacOS) {
+        final result = await Process.run('ruby', [ pathToPbxScript,'--googleFile=$googleServiceInfoFile','--xcodeFile=$xcodeProjFilePath']);
+        print('stdout: ${result.stdout}');
+        print('stderr: ${result.stderr}');
+      }
+    }
+
     await Future.wait<void>(futures);
 
     logger.stdout('');

scripts/set_ios_pbxproj_file.rb

@@ -0,0 +1,28 @@
+require 'xcodeproj'
+require 'optparse'
+
+
+options = {}
+OptionParser.new do |parser|
+  parser.banner = "Update project.pbxproj file for Xcode project."
+
+  parser.on("-x", "--xcodeFile=XCODEFILE", String, "File path of [PROJECT NAME].xcodeproj for adding file") do |xcodeFile|
+    options[:xcodeFile] = xcodeFile
+  end
+
+  parser.on("-g", "--googleFile=GOOGLEFILE", String, "File path for GoogleService-Info.plist to add to xcode project") do |googleFile|
+    options[:googleFile] = googleFile
+  end
+
+end.parse!
+
+# define the path to your .xcodeproj file
+project_path = options[:xcodeFile]
+# open the xcode project
+project = Xcodeproj::Project.open(project_path)
+# add GoogleService-Info.plist to your xcode project
+file = project.new_file(options[:googleFile])
+# save it
+project.save
+
+puts "Updated project.pbxproj file for Xcode project with GoogleService-Info.plist."