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# == Schema Information
#
# Table name: projects
#
#  id                     :integer          not null, primary key
#  name                   :string(255)
#  path                   :string(255)
#  description            :text
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#  created_at             :datetime
#  updated_at             :datetime
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#  creator_id             :integer
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#  issues_enabled         :boolean          default(TRUE), not null
#  wall_enabled           :boolean          default(TRUE), not null
#  merge_requests_enabled :boolean          default(TRUE), not null
#  wiki_enabled           :boolean          default(TRUE), not null
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#  namespace_id           :integer
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#  issues_tracker         :string(255)      default("gitlab"), not null
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#  issues_tracker_id      :string(255)
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#  snippets_enabled       :boolean          default(TRUE), not null
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#  last_activity_at       :datetime
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#  import_url             :string(255)
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#  visibility_level       :integer          default(0), not null
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#  archived               :boolean          default(FALSE), not null
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#  avatar                 :string(255)
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#  import_status          :string(255)
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#  repository_size        :float            default(0.0)
#  star_count             :integer          default(0), not null
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#  import_type            :string(255)
#  import_source          :string(255)
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#  commit_count           :integer          default(0)
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#  import_error           :text
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#

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require 'carrierwave/orm/activerecord'
require 'file_size_validator'

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class Project < ActiveRecord::Base
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  include Gitlab::ConfigHelper
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  include Gitlab::ShellAdapter
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  include Gitlab::VisibilityLevel
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  include Gitlab::CurrentSettings
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  include Referable
  include Sortable
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  include AfterCommitQueue
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  include CaseSensitivity
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  extend Gitlab::ConfigHelper
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  UNKNOWN_IMPORT_URL = 'http://unknown.git'

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  default_value_for :archived, false
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  default_value_for :visibility_level, gitlab_config_features.visibility_level
  default_value_for :issues_enabled, gitlab_config_features.issues
  default_value_for :merge_requests_enabled, gitlab_config_features.merge_requests
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  default_value_for :builds_enabled, gitlab_config_features.builds
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  default_value_for :wiki_enabled, gitlab_config_features.wiki
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  default_value_for :wall_enabled, false
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  default_value_for :snippets_enabled, gitlab_config_features.snippets
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  default_value_for(:shared_runners_enabled) { current_application_settings.shared_runners_enabled }
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  # set last_activity_at to the same as created_at
  after_create :set_last_activity_at
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  def set_last_activity_at
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    update_column(:last_activity_at, self.created_at)
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  end

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  # update visibility_levet of forks
  after_update :update_forks_visibility_level
  def update_forks_visibility_level
    return unless visibility_level < visibility_level_was

    forks.each do |forked_project|
      if forked_project.visibility_level > visibility_level
        forked_project.visibility_level = visibility_level
        forked_project.save!
      end
    end
  end

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  ActsAsTaggableOn.strict_case_match = true
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  acts_as_taggable_on :tags
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  attr_accessor :new_default_branch
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  attr_accessor :old_path_with_namespace
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  # Relations
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  belongs_to :creator, foreign_key: 'creator_id', class_name: 'User'
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  belongs_to :group, -> { where(type: Group) }, foreign_key: 'namespace_id'
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  belongs_to :namespace
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  has_one :last_event, -> {order 'events.created_at DESC'}, class_name: 'Event', foreign_key: 'project_id'
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  # Project services
  has_many :services
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  has_one :campfire_service, dependent: :destroy
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  has_one :drone_ci_service, dependent: :destroy
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  has_one :emails_on_push_service, dependent: :destroy
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  has_one :builds_email_service, dependent: :destroy
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  has_one :irker_service, dependent: :destroy
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  has_one :pivotaltracker_service, dependent: :destroy
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  has_one :hipchat_service, dependent: :destroy
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  has_one :flowdock_service, dependent: :destroy
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  has_one :assembla_service, dependent: :destroy
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  has_one :asana_service, dependent: :destroy
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  has_one :gemnasium_service, dependent: :destroy
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  has_one :slack_service, dependent: :destroy
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  has_one :buildkite_service, dependent: :destroy
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  has_one :bamboo_service, dependent: :destroy
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  has_one :teamcity_service, dependent: :destroy
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  has_one :pushover_service, dependent: :destroy
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  has_one :jira_service, dependent: :destroy
  has_one :redmine_service, dependent: :destroy
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  has_one :custom_issue_tracker_service, dependent: :destroy
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  has_one :gitlab_issue_tracker_service, dependent: :destroy
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  has_one :external_wiki_service, dependent: :destroy
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  has_one  :forked_project_link,  dependent: :destroy, foreign_key: "forked_to_project_id"
  has_one  :forked_from_project,  through:   :forked_project_link

  has_many :forked_project_links, foreign_key: "forked_from_project_id"
  has_many :forks,                through:     :forked_project_links, source: :forked_to_project
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  # Merge Requests for target project should be removed with it
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  has_many :merge_requests,     dependent: :destroy, foreign_key: 'target_project_id'
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  # Merge requests from source project should be kept when source project was removed
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  has_many :fork_merge_requests, foreign_key: 'source_project_id', class_name: MergeRequest
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  has_many :issues,             dependent: :destroy
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  has_many :labels,             dependent: :destroy
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  has_many :services,           dependent: :destroy
  has_many :events,             dependent: :destroy
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  has_many :milestones,         dependent: :destroy
  has_many :notes,              dependent: :destroy
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  has_many :snippets,           dependent: :destroy, class_name: 'ProjectSnippet'
  has_many :hooks,              dependent: :destroy, class_name: 'ProjectHook'
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  has_many :protected_branches, dependent: :destroy
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  has_many :project_members, dependent: :destroy, as: :source, class_name: 'ProjectMember'
  has_many :users, through: :project_members
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  has_many :deploy_keys_projects, dependent: :destroy
  has_many :deploy_keys, through: :deploy_keys_projects
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  has_many :users_star_projects, dependent: :destroy
  has_many :starrers, through: :users_star_projects, source: :user
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  has_many :releases, dependent: :destroy
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  has_many :lfs_objects_projects, dependent: :destroy
  has_many :lfs_objects, through: :lfs_objects_projects
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  has_one :import_data, dependent: :destroy, class_name: "ProjectImportData"
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  has_many :commit_statuses, dependent: :destroy, class_name: 'CommitStatus', foreign_key: :gl_project_id
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  has_many :ci_commits, dependent: :destroy, class_name: 'Ci::Commit', foreign_key: :gl_project_id
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  has_many :builds, class_name: 'Ci::Build', foreign_key: :gl_project_id # the builds are created from the commit_statuses
  has_many :runner_projects, dependent: :destroy, class_name: 'Ci::RunnerProject', foreign_key: :gl_project_id
  has_many :runners, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'
  has_many :variables, dependent: :destroy, class_name: 'Ci::Variable', foreign_key: :gl_project_id
  has_many :triggers, dependent: :destroy, class_name: 'Ci::Trigger', foreign_key: :gl_project_id
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  accepts_nested_attributes_for :variables, allow_destroy: true
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  delegate :name, to: :owner, allow_nil: true, prefix: true
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  delegate :members, to: :team, prefix: true
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  # Validations
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  validates :creator, presence: true, on: :create
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  validates :description, length: { maximum: 2000 }, allow_blank: true
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  validates :name,
    presence: true,
    length: { within: 0..255 },
    format: { with: Gitlab::Regex.project_name_regex,
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              message: Gitlab::Regex.project_name_regex_message }
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  validates :path,
    presence: true,
    length: { within: 0..255 },
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    format: { with: Gitlab::Regex.project_path_regex,
              message: Gitlab::Regex.project_path_regex_message }
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  validates :issues_enabled, :merge_requests_enabled,
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            :wiki_enabled, inclusion: { in: [true, false] }
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  validates :issues_tracker_id, length: { maximum: 255 }, allow_blank: true
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  validates :namespace, presence: true
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  validates_uniqueness_of :name, scope: :namespace_id
  validates_uniqueness_of :path, scope: :namespace_id
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  validates :import_url,
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    url: { protocols: %w(ssh git http https) },
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    if: :external_import?
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  validates :star_count, numericality: { greater_than_or_equal_to: 0 }
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  validate :check_limit, on: :create
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  validate :avatar_type,
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    if: ->(project) { project.avatar.present? && project.avatar_changed? }
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  validates :avatar, file_size: { maximum: 200.kilobytes.to_i }
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  before_validation :set_runners_token_token
  def set_runners_token_token
    self.runners_token = SecureRandom.hex(15) if self.runners_token.blank?
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  end

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  mount_uploader :avatar, AvatarUploader
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  # Scopes
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  scope :sorted_by_activity, -> { reorder(last_activity_at: :desc) }
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  scope :sorted_by_stars, -> { reorder('projects.star_count DESC') }
  scope :sorted_by_names, -> { joins(:namespace).reorder('namespaces.name ASC, projects.name ASC') }

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  scope :without_user, ->(user)  { where('projects.id NOT IN (:ids)', ids: user.authorized_projects.map(&:id) ) }
  scope :without_team, ->(team) { team.projects.present? ? where('projects.id NOT IN (:ids)', ids: team.projects.map(&:id)) : scoped  }
  scope :not_in_group, ->(group) { where('projects.id NOT IN (:ids)', ids: group.project_ids ) }
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  scope :in_namespace, ->(namespace_ids) { where(namespace_id: namespace_ids) }
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  scope :in_group_namespace, -> { joins(:group) }
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  scope :personal, ->(user) { where(namespace_id: user.namespace_id) }
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  scope :joined, ->(user) { where('namespace_id != ?', user.namespace_id) }
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  scope :public_only, -> { where(visibility_level: Project::PUBLIC) }
  scope :public_and_internal_only, -> { where(visibility_level: Project.public_and_internal_levels) }
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  scope :non_archived, -> { where(archived: false) }

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  state_machine :import_status, initial: :none do
    event :import_start do
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      transition [:none, :finished] => :started
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    end

    event :import_finish do
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      transition started: :finished
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    end

    event :import_fail do
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      transition started: :failed
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    end

    event :import_retry do
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      transition failed: :started
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    end

    state :started
    state :finished
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    state :failed

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    after_transition any => :started, do: :schedule_add_import_job
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    after_transition any => :finished, do: :clear_import_data
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  end

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  class << self
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    def public_and_internal_levels
      [Project::PUBLIC, Project::INTERNAL]
    end

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    def abandoned
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      where('projects.last_activity_at < ?', 6.months.ago)
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    end
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    def publicish(user)
      visibility_levels = [Project::PUBLIC]
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      visibility_levels << Project::INTERNAL if user
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      where(visibility_level: visibility_levels)
    end
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    def with_push
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      joins(:events).where('events.action = ?', Event::PUSHED)
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    end

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    def active
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      joins(:issues, :notes, :merge_requests).order('issues.created_at, notes.created_at, merge_requests.created_at DESC')
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    end
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    def search(query)
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      joins(:namespace).
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        where('LOWER(projects.name) LIKE :query OR
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              LOWER(projects.path) LIKE :query OR
              LOWER(namespaces.name) LIKE :query OR
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              LOWER(projects.description) LIKE :query',
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              query: "%#{query.try(:downcase)}%")
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    end
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    def search_by_title(query)
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      where('projects.archived = ?', false).where('LOWER(projects.name) LIKE :query', query: "%#{query.downcase}%")
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    end

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    def find_with_namespace(id)
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      namespace_path, project_path = id.split('/')

      return nil if !namespace_path || !project_path

      # Use of unscoped ensures we're not secretly adding any ORDER BYs, which
      # have a negative impact on performance (and aren't needed for this
      # query).
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      projects = unscoped.
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        joins(:namespace).
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        iwhere('namespaces.path' => namespace_path)

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      projects.find_by('projects.path' => project_path) ||
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        projects.iwhere('projects.path' => project_path).take
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    end
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    def find_by_ci_id(id)
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      find_by(ci_id: id.to_i)
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    end

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    def visibility_levels
      Gitlab::VisibilityLevel.options
    end
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    def sort(method)
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      if method == 'repository_size_desc'
        reorder(repository_size: :desc, id: :desc)
      else
        order_by(method)
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      end
    end
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    def reference_pattern
      name_pattern = Gitlab::Regex::NAMESPACE_REGEX_STR
      %r{(?<project>#{name_pattern}/#{name_pattern})}
    end
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    def trending(since = 1.month.ago)
      # By counting in the JOIN we don't expose the GROUP BY to the outer query.
      # This means that calls such as "any?" and "count" just return a number of
      # the total count, instead of the counts grouped per project as a Hash.
      join_body = "INNER JOIN (
        SELECT project_id, COUNT(*) AS amount
        FROM notes
        WHERE created_at >= #{sanitize(since)}
        GROUP BY project_id
      ) join_note_counts ON projects.id = join_note_counts.project_id"

      joins(join_body).reorder('join_note_counts.amount DESC')
    end
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    def visible_to_user(user)
      where(id: user.authorized_projects.select(:id).reorder(nil))
    end
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  end

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  def team
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    @team ||= ProjectTeam.new(self)
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  end

  def repository
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    @repository ||= Repository.new(path_with_namespace, nil, self)
  end

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  def commit(id = 'HEAD')
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    repository.commit(id)
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  end

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  def saved?
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    id && persisted?
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  end

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  def schedule_add_import_job
    run_after_commit(:add_import_job)
  end

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  def add_import_job
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    if forked?
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      RepositoryForkWorker.perform_async(self.id, forked_from_project.path_with_namespace, self.namespace.path)
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    else
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      RepositoryImportWorker.perform_async(self.id)
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    end
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  end

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  def clear_import_data
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    update(import_error: nil)

    ProjectCacheWorker.perform_async(self.id)

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    self.import_data.destroy if self.import_data
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  end

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  def import?
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    external_import? || forked?
  end

  def external_import?
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    import_url.present?
  end

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  def imported?
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    import_finished?
  end

  def import_in_progress?
    import? && import_status == 'started'
  end

  def import_failed?
    import_status == 'failed'
  end

  def import_finished?
    import_status == 'finished'
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  end

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  def safe_import_url
    result = URI.parse(self.import_url)
    result.password = '*****' unless result.password.nil?
    result.to_s
  rescue
    original_url
  end

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  def check_limit
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    unless creator.can_create_project? or namespace.kind == 'group'
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      errors[:limit_reached] << ("Your project limit is #{creator.projects_limit} projects! Please contact your administrator to increase it")
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    end
  rescue
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    errors[:base] << ("Can't check your ability to create project")
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  end

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  def to_param
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    path
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  end

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  def to_reference(_from_project = nil)
    path_with_namespace
  end

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  def web_url
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    Gitlab::Application.routes.url_helpers.namespace_project_url(self.namespace, self)
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  end

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  def web_url_without_protocol
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    web_url.split('://')[1]
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  end

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  def build_commit_note(commit)
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    notes.new(commit_id: commit.id, noteable_type: 'Commit')
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  end
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  def last_activity
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    last_event
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  end

  def last_activity_date
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    last_activity_at || updated_at
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  end
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  def project_id
    self.id
  end
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  def get_issue(issue_id)
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    if default_issues_tracker?
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      issues.find_by(iid: issue_id)
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    else
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      ExternalIssue.new(issue_id, self)
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    end
  end

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  def issue_exists?(issue_id)
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    get_issue(issue_id)
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  end

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  def default_issue_tracker
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    gitlab_issue_tracker_service || create_gitlab_issue_tracker_service
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  end

  def issues_tracker
    if external_issue_tracker
      external_issue_tracker
    else
      default_issue_tracker
    end
  end

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  def default_issues_tracker?
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    !external_issue_tracker
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  end

  def external_issues_trackers
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    services.select(&:issue_tracker?).reject(&:default?)
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  end

  def external_issue_tracker
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    @external_issues_tracker ||= external_issues_trackers.find(&:activated?)
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  end

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  def can_have_issues_tracker_id?
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    self.issues_enabled && !self.default_issues_tracker?
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  end

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  def build_missing_services
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    services_templates = Service.where(template: true)

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    Service.available_services_names.each do |service_name|
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      service = find_service(services, service_name)
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      # If service is available but missing in db
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      if service.nil?
        # We should check if template for the service exists
        template = find_service(services_templates, service_name)

        if template.nil?
          # If no template, we should create an instance. Ex `create_gitlab_ci_service`
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          self.send :"create_#{service_name}_service"
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        else
          Service.create_from_template(self.id, template)
        end
      end
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    end
  end

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  def create_labels
    Label.templates.each do |label|
      label = label.dup
      label.template = nil
      label.project_id = self.id
      label.save
    end
  end

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  def find_service(list, name)
    list.find { |service| service.to_param == name }
  end
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  def ci_services
    services.select { |service| service.category == :ci }
  end

  def ci_service
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    @ci_service ||= ci_services.find(&:activated?)
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  end

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  def jira_tracker?
    issues_tracker.to_param == 'jira'
  end

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  def avatar_type
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    unless self.avatar.image?
      self.errors.add :avatar, 'only images allowed'
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    end
  end

  def avatar_in_git
    @avatar_file ||= 'logo.png' if repository.blob_at_branch('master', 'logo.png')
    @avatar_file ||= 'logo.jpg' if repository.blob_at_branch('master', 'logo.jpg')
    @avatar_file ||= 'logo.gif' if repository.blob_at_branch('master', 'logo.gif')
    @avatar_file
  end

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  def avatar_url
    if avatar.present?
      [gitlab_config.url, avatar.url].join
    elsif avatar_in_git
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      Gitlab::Application.routes.url_helpers.namespace_project_avatar_url(namespace, self)
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    end
  end

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  # For compatibility with old code
  def code
    path
  end

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  def items_for(entity)
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    case entity
    when 'issue' then
      issues
    when 'merge_request' then
      merge_requests
    end
  end
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  def send_move_instructions(old_path_with_namespace)
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    # New project path needs to be committed to the DB or notification will
    # retrieve stale information
    run_after_commit { NotificationService.new.project_was_moved(self, old_path_with_namespace) }
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  end
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  def owner
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    if group
      group
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    else
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      namespace.try(:owner)
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    end
  end
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  def project_member_by_name_or_email(name = nil, email = nil)
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    user = users.find_by('name like ? or email like ?', name, email)
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    project_members.where(user: user) if user
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  end

  # Get Team Member record by user id
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  def project_member_by_id(user_id)
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    project_members.find_by(user_id: user_id)
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  end

  def name_with_namespace
    @name_with_namespace ||= begin
                               if namespace
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                                 namespace.human_name + ' / ' + name
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                               else
                                 name
                               end
                             end
  end

  def path_with_namespace
    if namespace
      namespace.path + '/' + path
    else
      path
    end
  end

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  def execute_hooks(data, hooks_scope = :push_hooks)
    hooks.send(hooks_scope).each do |hook|
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      hook.async_execute(data, hooks_scope.to_s)
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    end
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  end

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  def execute_services(data, hooks_scope = :push_hooks)
    # Call only service hooks that are active for this scope
    services.send(hooks_scope).each do |service|
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      service.async_execute(data)
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    end
  end

  def update_merge_requests(oldrev, newrev, ref, user)
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    MergeRequests::RefreshService.new(self, user).
      execute(oldrev, newrev, ref)
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  end

  def valid_repo?
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    repository.exists?
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  rescue
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    errors.add(:path, 'Invalid repository path')
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    false
  end

  def empty_repo?
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    !repository.exists? || !repository.has_visible_content?
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  end

  def repo
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    repository.raw
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  end

  def url_to_repo
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    gitlab_shell.url_to_repo(path_with_namespace)
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  end

  def namespace_dir
    namespace.try(:path) || ''
  end

  def repo_exists?
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    @repo_exists ||= repository.exists?
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  rescue
    @repo_exists = false
  end

  def open_branches
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    all_branches = repository.branches

    if protected_branches.present?
      all_branches.reject! do |branch|
        protected_branches_names.include?(branch.name)
      end
    end

    all_branches
  end

  def protected_branches_names
    @protected_branches_names ||= protected_branches.map(&:name)
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  end

  def root_ref?(branch)
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    repository.root_ref == branch
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  end

  def ssh_url_to_repo
    url_to_repo
  end

  def http_url_to_repo
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    "#{web_url}.git"
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  end

  # Check if current branch name is marked as protected in the system
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  def protected_branch?(branch_name)
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    protected_branches_names.include?(branch_name)
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  end
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  def developers_can_push_to_protected_branch?(branch_name)
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    protected_branches.any? { |pb| pb.name == branch_name && pb.developers_can_push }
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  end

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  def forked?
    !(forked_project_link.nil? || forked_project_link.forked_from_project.nil?)
  end
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  def personal?
    !group
  end

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  def rename_repo
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    path_was = previous_changes['path'].first
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    old_path_with_namespace = File.join(namespace_dir, path_was)
    new_path_with_namespace = File.join(namespace_dir, path)

    if gitlab_shell.mv_repository(old_path_with_namespace, new_path_with_namespace)
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      # If repository moved successfully we need to send update instructions to users.
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      # However we cannot allow rollback since we moved repository
      # So we basically we mute exceptions in next actions
      begin
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        gitlab_shell.mv_repository("#{old_path_with_namespace}.wiki", "#{new_path_with_namespace}.wiki")
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        send_move_instructions(old_path_with_namespace)
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        reset_events_cache
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        @old_path_with_namespace = old_path_with_namespace

        SystemHooksService.new.execute_hooks_for(self, :rename)

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        @repository = nil
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      rescue
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        # Returning false does not rollback after_* transaction but gives
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        # us information about failing some of tasks
        false
      end
    else
      # if we cannot move namespace directory we should rollback
      # db changes in order to prevent out of sync between db and fs
      raise Exception.new('repository cannot be renamed')
    end
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    Gitlab::UploadsTransfer.new.rename_project(path_was, path, namespace.path)
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  end
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  def hook_attrs
    {
      name: name,
      ssh_url: ssh_url_to_repo,
      http_url: http_url_to_repo,
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      web_url: web_url,
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      namespace: namespace.name,
      visibility_level: visibility_level
    }
  end

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  # Reset events cache related to this project
  #
  # Since we do cache @event we need to reset cache in special cases:
  # * when project was moved
  # * when project was renamed
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  # * when the project avatar changes
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  # Events cache stored like  events/23-20130109142513.
  # The cache key includes updated_at timestamp.
  # Thus it will automatically generate a new fragment
  # when the event is updated because the key changes.
  def reset_events_cache
    Event.where(project_id: self.id).
      order('id DESC').limit(100).
      update_all(updated_at: Time.now)
  end
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  def project_member(user)
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    project_members.find_by(user_id: user)
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  end
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  def default_branch
    @default_branch ||= repository.root_ref if repository.exists?
  end
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  def reload_default_branch
    @default_branch = nil
    default_branch
  end
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  def visibility_level_field
    visibility_level
  end
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  def archive!
    update_attribute(:archived, true)
  end

  def unarchive!
    update_attribute(:archived, false)
  end
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  def change_head(branch)
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    # Cached divergent commit counts are based on repository head
    repository.expire_branch_cache
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    gitlab_shell.update_repository_head(self.path_with_namespace, branch)
    reload_default_branch
  end
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  def forked_from?(project)
    forked? && project == forked_from_project
  end
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  def update_repository_size
    update_attribute(:repository_size, repository.size)
  end
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  def update_commit_count
    update_attribute(:commit_count, repository.commit_count)
  end

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  def forks_count
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    forks.count
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  end
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  def find_label(name)
    labels.find_by(name: name)
  end
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  def origin_merge_requests
    merge_requests.where(source_project_id: self.id)
  end
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  def create_repository
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    # Forked import is handled asynchronously
    unless forked?
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      if gitlab_shell.add_repository(path_with_namespace)
        true
      else
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        errors.add(:base, 'Failed to create repository via gitlab-shell')
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        false
      end
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    end
  end

  def repository_exists?
    !!repository.exists?
  end

  def create_wiki
    ProjectWiki.new(self, self.owner).wiki
    true
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  rescue ProjectWiki::CouldNotCreateWikiError
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    errors.add(:base, 'Failed create wiki')
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    false
  end
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  def jira_tracker_active?
    jira_tracker? && jira_service.active
  end

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  def ci_commit(sha)
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    ci_commits.find_by(sha: sha)
  end

  def ensure_ci_commit(sha)
    ci_commit(sha) || ci_commits.create(sha: sha)
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  end
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  def enable_ci
    self.builds_enabled = true
  end
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  def unlink_fork
    if forked?
      forked_from_project.lfs_objects.find_each do |lfs_object|
        lfs_object.projects << self
      end

      forked_project_link.destroy
    end
  end
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  def any_runners?(&block)
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    if runners.active.any?(&block)
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      return true
    end

    shared_runners_enabled? && Ci::Runner.shared.active.any?(&block)
  end

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  def valid_runners_token? token
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    self.runners_token && self.runners_token == token
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  end

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  # TODO (ayufan): For now we use runners_token (backward compatibility)
  # In 8.4 every build will have its own individual token valid for time of build
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  def valid_build_token? token
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    self.builds_enabled? && self.runners_token && self.runners_token == token
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  end

  def build_coverage_enabled?
    build_coverage_regex.present?
  end

  def build_timeout_in_minutes
    build_timeout / 60
  end

  def build_timeout_in_minutes=(value)
    self.build_timeout = value.to_i * 60
  end
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  def open_issues_count
    issues.opened.count
  end
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  def visibility_level_allowed?(level)
    return true unless forked?
    Gitlab::VisibilityLevel.allowed_fork_levels(forked_from_project.visibility_level).include?(level.to_i)
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  end
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end