Raw gitlab automerge feature

lib/gitlab_merge.rb

@@ -0,0 +1,26 @@
+class GitlabMerge
+  attr_accessor :project, :merge_path, :merge_request
+
+  def initialize(merge_request)
+    self.merge_request = merge_request
+    self.project = merge_request.project
+    self.merge_path = File.join(Rails.root, "tmp", "merge_repo", project.path)
+    FileUtils.rm_rf(merge_path)
+    FileUtils.mkdir_p merge_path
+  end
+
+  def merge
+    self.project.repo.git.clone({:branch => merge_request.target_branch}, project.url_to_repo, merge_path)
+    output = ""
+    Dir.chdir(merge_path) do
+      merge_repo = Grit::Repo.new('.')
+      output = merge_repo.git.pull({}, "origin", merge_request.source_branch)
+      if output =~ /Automatic merge failed/
+        return false  
+      else 
+        merge_repo.git.push({}, "origin", merge_request.target_branch)
+        return true
+      end
+    end
+  end
+end