[google_sign_in] Endorse macOS implementation (flutter#5600)

Endorses the new macOS implementation in the app-facing plugin.

Fixes flutter#46157

Author: stuartmorgan-g

packages/google_sign_in/google_sign_in/CHANGELOG.md

@@ -1,6 +1,7 @@
-## NEXT
+## 6.2.0
 
-* Updates minimum supported SDK version to Flutter 3.10/Dart 3.0.
+* Adds support for macOS.
+* Updates minimum supported SDK version to Flutter 3.16.
 
 ## 6.1.6
 

packages/google_sign_in/google_sign_in/README.md

@@ -2,9 +2,9 @@
 
 A Flutter plugin for [Google Sign In](https://developers.google.com/identity/).
 
-|             | Android | iOS     | Web |
-|-------------|---------|---------|-----|
-| **Support** | SDK 16+ | iOS 11+ | Any |
+|             | Android | iOS   | macOS  | Web |
+|-------------|---------|-------|--------|-----|
+| **Support** | SDK 16+ | 11.0+ | 10.15+ | Any |
 
 ## Platform integration
 
@@ -42,6 +42,10 @@ The Flutter Favorite
 [sign_in_with_apple](https://pub.dev/packages/sign_in_with_apple) plugin could
 be an option.
 
+### macOS integration
+
+Please see [instructions on integrating Google Sign-In for macOS](https://pub.dev/packages/google_sign_in_ios#macos-setup).
+
 ### Web integration
 
 The new SDK used by the web has fully separated Authentication from Authorization,

packages/google_sign_in/google_sign_in/example/macos/.gitignore

@@ -0,0 +1,7 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/

packages/google_sign_in/google_sign_in/example/macos/Flutter/Flutter-Debug.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

packages/google_sign_in/google_sign_in/example/macos/Flutter/Flutter-Release.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

packages/google_sign_in/google_sign_in/example/macos/Podfile

@@ -0,0 +1,40 @@
+platform :osx, '10.15'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'ephemeral', 'Flutter-Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure \"flutter pub get\" is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Flutter-Generated.xcconfig, then run \"flutter pub get\""
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_macos_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  flutter_install_all_macos_pods File.dirname(File.realpath(__FILE__))
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_macos_build_settings(target)
+  end
+end