class MailboxerConversation < ActiveRecord::Base
  attr_reader :originator, :original_message, :last_sender, :last_message, :users
  has_many :mailboxer_messages
  has_many :mailboxer_mails, :through => :mailboxer_messages
  #  before_create :clean
  scope :participant, lambda {|participant|
    joins(:mailboxer_mails).select('DISTINCT mailboxer_conversations.*').where('mailboxer_mails.receiver_id' => participant.id,'mailboxer_mails.receiver_type' => participant.class.to_s)    
  }
  scope :inbox, lambda {|participant|
    joins(:mailboxer_mails).select('DISTINCT mailboxer_conversations.*').where('mailboxer_mails.receiver_id' => participant.id,'mailboxer_mails.receiver_type' => participant.class.to_s, 'mailboxer_mails.mailbox_type' => 'inbox','mailboxer_mails.trashed' => false) 
  }
  scope :sentbox, lambda {|participant|
    joins(:mailboxer_mails).select('DISTINCT mailboxer_conversations.*').where('mailboxer_mails.receiver_id' => participant.id,'mailboxer_mails.receiver_type' => participant.class.to_s, 'mailboxer_mails.mailbox_type' => 'sentbox','mailboxer_mails.trashed' => false)    
  }
  scope :trash, lambda {|participant|
    joins(:mailboxer_mails).select('DISTINCT mailboxer_conversations.*').where('mailboxer_mails.receiver_id' => participant.id,'mailboxer_mails.receiver_type' => participant.class.to_s,'mailboxer_mails.trashed' => true)
  }
  scope :unread,  lambda {|participant|
    joins(:mailboxer_mails).select('DISTINCT mailboxer_conversations.*').where('mailboxer_mails.receiver_id' => participant.id,'mailboxer_mails.receiver_type' => participant.class.to_s,'mailboxer_mails.read' => false)
  }
  
  class << self
    def total
      count('DISTINCT mailboxer_conversations.id')
    end
  end
  
  def mark_as_read(participant)
    return if participant.nil?
    return MailboxerMail.conversation(self).receiver(participant).mark_as_read
  end
  
  def mark_as_unread(participant)
    return if participant.nil?
    return MailboxerMail.conversation(self).receiver(participant).mark_as_unread
  end
  
  def move_to_trash(participant)
    return if participant.nil?
    return MailboxerMail.conversation(self).receiver(participant).move_to_trash
  end
  
  def untrash(participant)
    return if participant.nil?
    return MailboxerMail.conversation(self).receiver(participant).untrash
  end
  
  #originator of the conversation.
  def originator
    @orignator = self.original_message.sender if @originator.nil?
    return @orignator
  end
  
  #first message of the conversation.
  def original_message
    @original_message = self.mailboxer_messages.find(:first, :order => 'created_at') if @original_message.nil?
    return @original_message
  end
  
  #sender of the last message.
  def last_sender
    @last_sender = self.last_message.sender if @last_sender.nil?
    return @last_sender
  end
  
  #last message in the conversation.
  def last_message
    @last_message = self.mailboxer_messages.find(:first, :order => 'created_at DESC') if @last_message.nil?
    return @last_message
  end
  
  def mails(participant=nil)
    return MailboxerMail.conversation(self).receiver(participant) if participant
    return MailboxerMail.conversation(self)
  end
  
  #all users involved in the conversation.
  def recipients
    return last_message.get_recipients
  end
  
  def get_recipients
    return self.recipients
  end
  
  def messages
    self.mailboxer_messages
  end
  
  def count_messages
    return MailboxerMessage.conversation(self).count
  end
  
  def is_participant?(participant)
    return false if participant.nil?
    return MailboxerMail.conversation(self).receiver(participant).count != 0
  end
  #  protected
  #  #[empty method]
  #  #
  #  #this gets called before_create. Implement this if you wish to clean out illegal content such as scripts or anything that will break layout. This is left empty because what is considered illegal content varies.
  #  def clean
  #    return if subject.nil?
  #    #strip all illegal content here. (scripts, shit that will break layout, etc.)
  #  end
end