1 files changed, 35 insertions, 0 deletions
diff --git a/app/services/projects/android_target_platform_detector_service.rb b/app/services/projects/android_target_platform_detector_service.rb
new file mode 100644
index 00000000000..11635ad18d5
--- /dev/null
+++ b/app/services/projects/android_target_platform_detector_service.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module Projects
+  # Service class to detect if a project is made to run on the Android platform.
+  #
+  # This service searches for an AndroidManifest.xml file which all Android app
+  # project must have. It returns the symbol :android if the given project is an
+  # Android app project.
+  #
+  # Ref: https://developer.android.com/guide/topics/manifest/manifest-intro
+  #
+  # Example usage:
+  # > AndroidTargetPlatformDetectorService.new(a_project).execute
+  # => nil
+  # > AndroidTargetPlatformDetectorService.new(an_android_project).execute
+  # => :android
+  class AndroidTargetPlatformDetectorService < BaseService
+    # <manifest> element is required and must occur once inside AndroidManifest.xml
+    MANIFEST_FILE_SEARCH_QUERY = '<manifest filename:AndroidManifest.xml'
+
+    def execute
+      detect
+    end
+
+    private
+
+    def file_finder
+      @file_finder ||= ::Gitlab::FileFinder.new(project, project.default_branch)
+    end
+
+    def detect
+      return :android if file_finder.find(MANIFEST_FILE_SEARCH_QUERY).present?
+    end
+  end
+end