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

class Note < ActiveRecord::Base
  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

  attr_protected :author, :author_id
  attr_accessor :notify
  attr_accessor :notify_author

  validates_presence_of :project

  validates :note,
            :presence => true,
            :length   => { :within => 0..5000 }

  validates :attachment,
            :file_size => {
              :maximum => 10.megabytes.to_i
            }

  scope :common, where(:noteable_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, lambda { |day| where("created_at  >= :date", :date => (day)) }
  scope :fresh, order("created_at DESC")
  scope :inc_author_project, includes(:project, :author)
  scope :inc_author, includes(:author)

  mount_uploader :attachment, AttachmentUploader

  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

  def target
    if noteable_type == "Commit"
      project.commit(noteable_id)
    else
      noteable
    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)
    commit? && commit_author &&
      commit_author.email != user.email
  end

  def commit?
    noteable_type == "Commit"
  end

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

  # Returns true if this is an upvote note,
  # otherwise false is returned
  def upvote?
    note =~ /^\+1/ ? true : false
  end
end
# == Schema Information
#
# Table name: notes
#
#  id            :integer(4)      not null, primary key
#  note          :text
#  noteable_id   :string(255)
#  noteable_type :string(255)
#  author_id     :integer(4)
#  created_at    :datetime        not null
#  updated_at    :datetime        not null
#  project_id    :integer(4)
#  attachment    :string(255)
#  line_code     :string(255)
#