Added Slack service integration.

3 files changed, 164 insertions, 1 deletions

diff --git a/app/models/project.rb b/app/models/project.rb
index 7d7edc45739..769ab217625 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -56,6 +56,7 @@ class Project < ActiveRecord::Base
   has_one :flowdock_service, dependent: :destroy
   has_one :assembla_service, dependent: :destroy
   has_one :gemnasium_service, dependent: :destroy
+  has_one :slack_service, dependent: :destroy
   has_one :forked_project_link, dependent: :destroy, foreign_key: "forked_to_project_id"
   has_one :forked_from_project, through: :forked_project_link
   # Merge Requests for target project should be removed with it
@@ -304,7 +305,7 @@ class Project < ActiveRecord::Base
   end
 
   def available_services_names
-    %w(gitlab_ci campfire hipchat pivotaltracker flowdock assembla emails_on_push gemnasium)
+    %w(gitlab_ci campfire hipchat pivotaltracker flowdock assembla emails_on_push gemnasium slack)
   end
 
   def gitlab_ci?
diff --git a/app/models/project_services/slack_message.rb b/app/models/project_services/slack_message.rb
new file mode 100644
index 00000000000..b2b8d6fed7a
--- /dev/null
+++ b/app/models/project_services/slack_message.rb
@@ -0,0 +1,95 @@
+require 'slack-notifier'
+
+class SlackMessage
+  def initialize(params)
+    @after = params.fetch(:after)
+    @before = params.fetch(:before)
+    @commits = params.fetch(:commits, [])
+    @project_name = params.fetch(:project_name)
+    @project_url = params.fetch(:project_url)
+    @ref = params.fetch(:ref).gsub('refs/heads/', '')
+    @username = params.fetch(:user_name)
+  end
+
+  def compose
+    format(message)
+  end
+
+  private
+
+  attr_reader :after
+  attr_reader :before
+  attr_reader :commits
+  attr_reader :project_name
+  attr_reader :project_url
+  attr_reader :ref
+  attr_reader :username
+
+  def message
+    if new_branch?
+      new_branch_message
+    elsif removed_branch?
+      removed_branch_message
+    else
+      push_message << commit_messages
+    end
+  end
+
+  def format(string)
+    Slack::Notifier::LinkFormatter.format(string)
+  end
+
+  def new_branch_message
+    "#{username} pushed new branch #{branch_link} to #{project_link}"
+  end
+
+  def removed_branch_message
+    "#{username} removed branch #{ref} from #{project_link}"
+  end
+
+  def push_message
+    "#{username} pushed to branch #{branch_link} of #{project_link} (#{compare_link})"
+  end
+
+  def commit_messages
+    commits.each_with_object('') do |commit, str|
+      str << compose_commit_message(commit)
+    end
+  end
+
+  def compose_commit_message(commit)
+    id = commit.fetch(:id)[0..5]
+    message = commit.fetch(:message)
+    url = commit.fetch(:url)
+
+    "\n - #{message} ([#{id}](#{url}))"
+  end
+
+  def new_branch?
+    before =~ /000000/
+  end
+
+  def removed_branch?
+    after =~ /000000/
+  end
+
+  def branch_url
+    "#{project_url}/commits/#{ref}"
+  end
+
+  def compare_url
+    "#{project_url}/compare/#{before}...#{after}"
+  end
+
+  def branch_link
+    "[#{ref}](#{branch_url})"
+  end
+
+  def project_link
+    "[#{project_name}](#{project_url})"
+  end
+
+  def compare_link
+    "[Compare changes](#{compare_url})"
+  end
+end
diff --git a/app/models/project_services/slack_service.rb b/app/models/project_services/slack_service.rb
new file mode 100644
index 00000000000..27648acf6d0
--- /dev/null
+++ b/app/models/project_services/slack_service.rb
@@ -0,0 +1,67 @@
+# == Schema Information
+#
+# Table name: services
+#
+#  id          :integer          not null, primary key
+#  type        :string(255)
+#  title       :string(255)
+#  token       :string(255)
+#  project_id  :integer          not null
+#  created_at  :datetime         not null
+#  updated_at  :datetime         not null
+#  active      :boolean          default(FALSE), not null
+#  project_url :string(255)
+#  subdomain   :string(255)
+#  room        :string(255)
+#  api_key     :string(255)
+#
+
+class SlackService < Service
+  attr_accessible :room
+  attr_accessible :subdomain
+
+  validates :room, presence: true, if: :activated?
+  validates :subdomain, presence: true, if: :activated?
+  validates :token, presence: true, if: :activated?
+
+  def title
+    'Slack'
+  end
+
+  def description
+    'A team communication tool for the 21st century'
+  end
+
+  def to_param
+    'slack'
+  end
+
+  def fields
+    [
+      { type: 'text', name: 'subdomain', placeholder: '' },
+      { type: 'text', name: 'token',     placeholder: '' },
+      { type: 'text', name: 'room',      placeholder: '' },
+    ]
+  end
+
+  def execute(push_data)
+    message = SlackMessage.new(push_data.merge(
+      project_url: project_url,
+      project_name: project_name
+    ))
+
+    notifier = Slack::Notifier.new(subdomain, token)
+    notifier.channel = room
+    notifier.ping(message.compose)
+  end
+
+  private
+
+  def project_name
+    project.name_with_namespace.gsub(/\s/, '')
+  end
+
+  def project_url
+    project.web_url
+  end
+end