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path: root/app/models/note.rb
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# == Schema Information
#
# Table name: notes
#
#  id            :integer          not null, primary key
#  note          :text
#  noteable_id   :string(255)
#  noteable_type :string(255)
#  author_id     :integer
#  created_at    :datetime         not null
#  updated_at    :datetime         not null
#  project_id    :integer
#  attachment    :string(255)
#  line_code     :string(255)
#

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

class Note < ActiveRecord::Base

  attr_accessible :note, :noteable, :noteable_id, :noteable_type, :project_id,
                  :attachment, :line_code, :commit_id

  attr_accessor :notify
  attr_accessor :notify_author

  belongs_to :project
  belongs_to :noteable, polymorphic: true
  belongs_to :author, class_name: "User"

  delegate :name, to: :project, prefix: true
  delegate :name, :email, to: :author, prefix: true

  validates :note, :project, presence: true
  validates :attachment, file_size: { maximum: 10.megabytes.to_i }

  validates :noteable_id, presence: true, if: ->(n) { n.noteable_type.present? && n.noteable_type != 'Commit' }
  validates :commit_id, presence: true, if: ->(n) { n.noteable_type == 'Commit' }

  mount_uploader :attachment, AttachmentUploader

  # Scopes
  scope :for_commits, ->{ where(noteable_type: "Commit") }
  scope :common, ->{ where(noteable_id: nil, commit_id: nil) }
  scope :today, ->{ where("created_at >= :date", date: Date.today) }
  scope :last_week, ->{ where("created_at  >= :date", date: (Date.today - 7.days)) }
  scope :since, ->(day) { where("created_at  >= :date", date: (day)) }
  scope :fresh, ->{ order("created_at ASC, id ASC") }
  scope :inc_author_project, ->{ includes(:project, :author) }
  scope :inc_author, ->{ includes(:author) }

  def self.create_status_change_note(noteable, author, status)
    create({
      noteable: noteable,
      project: noteable.project,
      author: author,
      note: "_Status changed to #{status}_"
    }, without_protection: true)
  end

  def notify
    @notify ||= false
  end

  def notify_author
    @notify_author ||= false
  end

  # override to return commits, which are not active record
  def noteable
    if for_commit?
      project.commit(commit_id)
    else
      super
    end
  # Temp fix to prevent app crash
  # if note commit id doesnt exist
  rescue
    nil
  end

  # Check if we can notify commit author
  # with email about our comment
  #
  # If commit author email exist in project
  # and commit author is not passed user we can
  # send email to him
  #
  # params:
  #   user - current user
  #
  # return:
  #   Boolean
  #
  def notify_only_author?(user)
    for_commit? && commit_author &&
      commit_author.email != user.email
  end

  def for_commit?
    noteable_type == "Commit"
  end

  def for_diff_line?
    line_code.present?
  end

  def commit_author
    @commit_author ||=
      project.users.find_by_email(noteable.author_email) ||
      project.users.find_by_name(noteable.author_name)
  rescue
    nil
  end

  # Returns true if this is an upvote note,
  # otherwise false is returned
  def upvote?
    note.start_with?('+1') || note.start_with?(':+1:')
  end

  # Returns true if this is a downvote note,
  # otherwise false is returned
  def downvote?
    note.start_with?('-1') || note.start_with?(':-1:')
  end

  def noteable_type_name
    if noteable_type.present?
      noteable_type.downcase
    else
      "wall"
    end
  end
end