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path: root/app/models/account.rb
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class Account < ApplicationRecord
  include Targetable

  # Local users
  has_one :user, inverse_of: :account
  validates :username, presence: true, format: { with: /\A[a-z0-9_]+\z/i, message: 'only letters, numbers and underscores' }, uniqueness: { scope: :domain, case_sensitive: false }, if: 'local?'
  validates :username, presence: true, uniqueness: { scope: :domain, case_sensitive: true }, unless: 'local?'

  # Avatar upload
  has_attached_file :avatar, styles: { large: '300x300#', medium: '96x96#', small: '48x48#' }
  validates_attachment_content_type :avatar, content_type: /\Aimage\/.*\Z/
  validates_attachment_size :avatar, less_than: 2.megabytes

  # Header upload
  has_attached_file :header, styles: { medium: '700x335#' }
  validates_attachment_content_type :header, content_type: /\Aimage\/.*\Z/
  validates_attachment_size :header, less_than: 2.megabytes

  # Local user profile validations
  validates :display_name, length: { maximum: 30 }, if: 'local?'
  validates :note, length: { maximum: 124 }, if: 'local?'

  # Timelines
  has_many :stream_entries, inverse_of: :account
  has_many :statuses, inverse_of: :account
  has_many :favourites, inverse_of: :account
  has_many :mentions, inverse_of: :account

  # Follow relations
  has_many :active_relationships,  class_name: 'Follow', foreign_key: 'account_id',        dependent: :destroy
  has_many :passive_relationships, class_name: 'Follow', foreign_key: 'target_account_id', dependent: :destroy

  has_many :following, through: :active_relationships,  source: :target_account
  has_many :followers, through: :passive_relationships, source: :account

  has_many :media_attachments, dependent: :destroy

  MENTION_RE = /(?:^|\s|\.)@([a-z0-9_]+(?:@[a-z0-9\.\-]+)?)/i

  def follow!(other_account)
    self.active_relationships.where(target_account: other_account).first_or_create!(target_account: other_account)
  end

  def unfollow!(other_account)
    follow = self.active_relationships.find_by(target_account: other_account)
    follow.destroy unless follow.nil?
  end

  def following?(other_account)
    following.include?(other_account)
  end

  def local?
    self.domain.nil?
  end

  def acct
    local? ? self.username : "#{self.username}@#{self.domain}"
  end

  def subscribed?
    !(self.secret.blank? || self.verify_token.blank?)
  end

  def favourited?(status)
    (status.reblog? ? status.reblog : status).favourites.where(account: self).count > 0
  end

  def reblogged?(status)
    (status.reblog? ? status.reblog : status).reblogs.where(account: self).count > 0
  end

  def keypair
    self.private_key.nil? ? OpenSSL::PKey::RSA.new(self.public_key) : OpenSSL::PKey::RSA.new(self.private_key)
  end

  def subscription(webhook_url)
    @subscription ||= OStatus2::Subscription.new(self.remote_url, secret: self.secret, token: self.verify_token, webhook: webhook_url, hub: self.hub_url)
  end

  def ping!(atom_url, hubs)
    return unless local? && !Rails.env.development?
    OStatus2::Publication.new(atom_url, hubs).publish
  end

  def avatar_remote_url=(url)
    unless self[:avatar_remote_url] == url
      self.avatar = URI.parse(url)
    end

    self[:avatar_remote_url] = url
  end

  def object_type
    :person
  end

  def to_param
    self.username
  end

  def self.find_local!(username)
    self.find_remote!(username, nil)
  end

  def self.find_remote!(username, domain)
    table = self.arel_table
    self.where(table[:username].matches(username)).where(domain: domain).take!
  end

  def self.find_local(username)
    self.find_local!(username)
  rescue ActiveRecord::RecordNotFound
    nil
  end

  def self.find_remote(username, domain)
    self.find_remote!(username, domain)
  rescue ActiveRecord::RecordNotFound
    nil
  end

  before_create do
    if local?
      keypair = OpenSSL::PKey::RSA.new(Rails.env.test? ? 1024 : 2048)
      self.private_key = keypair.to_pem
      self.public_key  = keypair.public_key.to_pem
    end
  end
end