Add proper signing and github release support

fastlane/Fastfile

@@ -4,14 +4,12 @@ platform :android do
 desc 'Deploy to play store'
   lane :beta do |options|
 
-    # update csproj version
     update_version(
-      solution_path: 'osu.Android.sln',
       version: options[:version],
       build: options[:build],
     )
 
-    build()
+    build(options)
 
     supply(
       apk: './osu.Android/bin/Release/sh.ppy.osulazer-Signed.apk',
@@ -21,8 +19,35 @@ desc 'Deploy to play store'
     )
   end
 
+  desc 'Deploy to github release'
+  lane :build_github do |options|
+
+    update_version(
+      version: options[:version],
+      build: options[:build],
+    )
+
+    build(options)
+
+    client = HTTPClient.new
+    changelog = client.get_content 'https://gist.githubusercontent.com/peppy/aaa2ec1a323554b619671cac6dbbb776/raw'
+    changelog.gsub!('$BUILD_ID', options[:build])
+
+    set_github_release(
+      repository_name: "ppy/osu",
+      api_token: ENV["GITHUB_TOKEN"],
+      name: options[:build],
+      tag_name: options[:build],
+      is_draft: true,
+      description: changelog,
+      commitish: "master",
+      upload_assets: ["osu.Android/bin/Release/sh.ppy.osulazer.apk"]
+    )
+
+  end
+
   desc 'Compile the project'
-  lane :build do
+  lane :build do |options|
     nuget_restore(
       project_path: 'osu.Android.sln'
     )
@@ -31,11 +56,24 @@ desc 'Deploy to play store'
       build_configuration: 'Release',
       solution_path: 'osu.Android.sln',
       platform: "android",
+      output_path: "osu.Android/bin/Release/",
+      keystore_path: options[:keystore_path],
+      keystore_alias: options[:keystore_alias],
+      keystore_password: ENV["KEYSTORE_PASSWORD"]
     )
   end
 
   lane :update_version do |options|
-    app_version(options)
+
+    split = options[:build].split('.')
+    split[1] = split[1].to_s.rjust(4, '0')
+    android_build = split.join('')
+
+    app_version(
+      solution_path: 'osu.Android.sln',
+      version: options[:version],
+      build: android_build,
+    )
   end
 
 end

fastlane/README.md

@@ -21,6 +21,11 @@ or alternatively using `brew cask install fastlane`
 fastlane android beta
 ```
 Deploy to play store
+### android build_github
+```
+fastlane android build_github
+```
+Deploy to github release
 ### android build
 ```
 fastlane android build