Replace grit with rugged

Gemfile

@@ -38,7 +38,7 @@ gem 'whenever', require: false
 gem 'stamp'
 # Git support
-gem 'grit'
+gem 'rugged', '~> 0.17.0.b7'
 # Pagination
 gem 'kaminari'

Gemfile.lock

@@ -87,10 +87,6 @@ GEM
     foreman (0.60.2)
       thor (>= 0.13.6)
     gitlab_ci_meta (1.0)
-    grit (2.5.0)
-      diff-lcs (~> 1.1)
-      mime-types (~> 1.15)
-      posix-spawn (~> 0.3.6)
     growl (1.0.3)
     guard (1.3.2)
       listen (>= 0.4.2)
@@ -129,7 +125,6 @@ GEM
     orm_adapter (0.4.0)
     pg (0.14.1)
     polyglot (0.3.3)
-    posix-spawn (0.3.6)
     pry (0.9.10)
       coderay (~> 1.0.5)
       method_source (~> 0.8)
@@ -187,6 +182,7 @@ GEM
       railties (>= 3.0)
       rspec (~> 2.11.0)
     rubyzip (0.9.9)
+    rugged (0.17.0.b7)
     sass (3.2.1)
     sass-rails (3.2.5)
       railties (~> 3.2.0)
@@ -263,7 +259,6 @@ DEPENDENCIES
   font-awesome-sass-rails (~> 3.0.0)
   foreman
   gitlab_ci_meta
-  grit
   growl
   guard-rspec
   haml-rails
@@ -279,6 +274,7 @@ DEPENDENCIES
   rb-fsevent
   rb-inotify
   rspec-rails
+  rugged (~> 0.17.0.b7)
   sass-rails (~> 3.2.3)
   settingslogic
   shoulda-matchers

app/controllers/application_controller.rb

 class ApplicationController < ActionController::Base
   protect_from_forgery
-  rescue_from Grit::InvalidGitRepositoryError do |exception|
-    @error = "Project path is not a git repository"
-    render "errors/show", status: 500
-  end
-
   def authenticate_token!
     unless project.valid_token?(params[:token])
       return head(403)

app/models/build.rb

@@ -64,7 +64,7 @@ class Build < ActiveRecord::Base
   end
   def git_author_name
-    commit.author.name
+    commit.author[:name]
   rescue
     nil
   end

app/models/project.rb

@@ -27,7 +27,7 @@ class Project < ActiveRecord::Base
   def repo_present?
     repo
-  rescue Grit::NoSuchPathError, Grit::InvalidGitRepositoryError
+  rescue
     errors.add(:path, 'Project path is not a git repository')
     false
   end
@@ -109,11 +109,21 @@ class Project < ActiveRecord::Base
   end
   def repo
-    @repo ||= Grit::Repo.new(path)
+    @repo ||= Rugged::Repository.new(path)
   end
   def last_commit(ref = 'master')
-    repo.commits(ref, 1).first
+    branch = find_branch_by_name(ref)
+
+    if branch
+      repo.lookup(branch.target)
+    else
+      repo.lookup(ref)
+    end
+  end
+
+  def find_branch_by_name(name)
+    repo.branches.find { |branch| branch.name == name }
   end
   def tracked_refs
@@ -149,23 +159,3 @@ end
 #  token       :string(255)
 #  default_ref :string(255)
 #
-
-# == Schema Information
-#
-# Table name: projects
-#
-#  id               :integer(4)      not null, primary key
-#  name             :string(255)     not null
-#  path             :string(255)     not null
-#  timeout          :integer(4)      default(1800), not null
-#  scripts          :text            default(""), not null
-#  created_at       :datetime        not null
-#  updated_at       :datetime        not null
-#  token            :string(255)
-#  default_ref      :string(255)
-#  gitlab_url       :string(255)
-#  always_build     :boolean(1)      default(FALSE), not null
-#  polling_interval :integer(4)
-#  public           :boolean(1)      default(FALSE), not null
-#
-