class JamRuby::Promotional < ActiveRecord::Base
  self.table_name = :promotionals

  default_scope { order('aasm_state ASC, position ASC, updated_at DESC') }

  attr_accessible :position, :aasm_state

  include AASM
  HIDDEN_STATE = :hidden
  ACTIVE_STATE = :active
  EXPIRED_STATE = :expired
  STATES = [HIDDEN_STATE, ACTIVE_STATE, EXPIRED_STATE]

  aasm do
    state HIDDEN_STATE, :initial => true
    state ACTIVE_STATE
    state EXPIRED_STATE
    
    event :activate do
      transitions :from => [HIDDEN_STATE, EXPIRED_STATE], :to => ACTIVE_STATE
    end
    
    event :expire do
      transitions :from => [HIDDEN_STATE, ACTIVE_STATE], :to => EXPIRED_STATE
    end

    event :hide do
      transitions :from => [HIDDEN_STATE, ACTIVE_STATE], :to => HIDDEN_STATE
    end

  end

  def state
    aasm_state
  end

  def self.active(max_count=10)
    rel = self.where(:aasm_state => ACTIVE_STATE)
    if 0 < (mc = max_count.to_i)
      rel = rel.limit(mc) 
    end
    rel
  end

end

class JamRuby::PromoBuzz < JamRuby::Promotional
  attr_accessible :image, :text_short, :text_long, :position, :aasm_state, :key
  
  def self.create_with_params(params)
    obj = self.new
    obj.update_with_params(params)
    obj.save!
    obj
  end

  def update_with_params(params)
    self.text_short = params[:text_short]
    self.text_long = params[:text_long]
    self.position = params[:position]
    self.aasm_state = params[:aasm_state]
    self.key = params[:key]
    self
  end

  def admin_title
    "Buzz #{created_at.strftime('%Y-%m-%d %H-%M')}"
  end

  def image_name
    fn = image ? image.path || image.filename : nil
    File.basename(fn) if fn
  end

  def image_url
    self.image.direct_fog_url(with_path: true)
  end

end

class JamRuby::PromoLatest < JamRuby::Promotional
  belongs_to :latest, :polymorphic => true

  attr_accessible :latest

  def music_session
    self.latest if self.latest.is_a? MusicSession
  end

  def recording
    self.latest if self.latest.is_a? Recording
  end

  def self.create_with_params(params)
    obj = self.new
    obj.update_with_params(params)
    obj.save!
    obj
  end

  def update_with_params(params)
    if (latest_id = params[:latest_id]).present?
      self.latest = Recording.where(:id => latest_id).limit(1).first ||
        MusicSession.where(:id => latest_id).limit(1).first
    end
    self.position = params[:position]
    self.aasm_state = params[:aasm_state]
    self
  end

  def self.latest_display_name(ll)
    return '' unless ll
    nm = if ll.is_a?(Recording)
           ll.band.present? ? ll.band.name : ll.owner.name
         else
           ll.band.present? ? ll.band.name : ll.user.name
         end
    "#{ll.class.name.demodulize}:  #{nm} (#{ll.created_at})"
  end

  def latest_display_name
    self.class.latest_display_name(self.latest)
  end

  def self.active_latests
    self.where(:aasm_state => 'active')
      .all
      .map(&:latest)
  end

  def self.active(max_count=10)
    super.includes(:latest).select { |pp| pp.latest.present? ? pp : nil }.compact
  end
end