class Event < ActiveRecord::Base
  include Ext::Integrations::Event
  include Ext::Resellable::Event
  include Ext::Uuid
  include Ticket::Reporting
  include EventPresenter
  require 'email_validator'

  CATEGORIES = ["Dance", "Film & Electronic Media", "Literary Arts", "Music", "Theater", "Visual Arts", "Other"]
  
  attr_accessible :name, :producer, :description, :contact_email, :contact_phone, :image, :venue_attributes,
                  :show_special_instructions, :special_instructions_caption, :public, :primary_category,
                  :secondary_categories, :primary_category_other, :secondary_category_other, :members_only
  
  belongs_to :organization
  belongs_to :venue
  belongs_to :import
  accepts_nested_attributes_for :venue
  has_many :charts
  has_many :shows, :order => :datetime
  has_many :tickets, :through => :shows
  has_many :discounts
  has_many :events_pass_types
  has_many :pass_types, :through => :events_pass_types
  validate :validate_contact_phone
  validates :contact_email, :presence => true, :email => true
  validates :name, :presence => true
  validates :organization_id, :presence => true

  has_attached_file :image,
    :storage => :s3,
    :path => ":attachment/:id/:style.:extension",
    :bucket => Rails.configuration.s3.bucket,
    :s3_protocol => 'https',
    :s3_credentials => {
      :access_key_id => Rails.configuration.s3.access_key_id,
      :secret_access_key => Rails.configuration.s3.secret_access_key
    },
    :styles => {
      :thumb => "140x140#"
    }
  validates_attachment_size :image, :less_than => 1.megabytes, :unless => Proc.new {|model| model.image }
  validates_attachment_content_type :image, :content_type => ["image/jpeg", "image/gif", "image/png"]

  before_create :set_primary_category
  before_create { self.public = true }
  after_create :create_default_chart

  serialize :secondary_categories, Array

  default_scope where(:deleted_at => nil).order("events.created_at DESC")
  scope :published, includes(:shows).where(:shows => { :state => "published" })
  scope :public, where(:public => true)

  delegate :time_zone, :to => :venue

  ANY_EVENT_TEXT = "(Any Event)"
  ANY_EVENT_ID   = "-1"

  def free?
    is_free?
  end

  def to_s
    name
  end

  def artfully_ticketed
    true
  end

  alias :destroy! :destroy
  def destroy
    update_attribute(:deleted_at, Time.now)
  end

  def single_show?
    shows.length == 1
  end

  #
  # The list of events do be deplayed on their event index
  #
  def self.for_event_storefront(organization, member = nil)
    event_rel = organization.events.joins(:shows).where('shows.datetime > ?', DateTime.now).group(:event_id).public
    event_rel = event_rel.where(:members_only => false) if member.nil?
    event_rel.all
  end

  #
  # Find a single event for the single event storefront view
  #
  def self.storefront_find(id, member = nil)
    event_rel = Event.includes(:venue)
    event_rel = event_rel.where(:members_only => false) if member.nil?
    event_rel.find(id)
  end
  
  def destroyable?
    items.blank?
  end
  
  def imported?
    !self.import_id.nil?
  end
  
  def items
    Item.where(:show_id => self.shows)
  end

  def filter_charts(charts)
    charts.reject { |chart| already_has_chart(chart) }
  end

  def set_primary_category
    self.primary_category ||= "Other"
  end
  
  def create_default_chart
    chart = self.charts.build({ :name => self.name, 
                                :is_template => false })
    chart.organization = self.organization
    chart.save
  end

  def default_chart
    charts.first
  end

  def upcoming_shows_rel
    shows.includes(:event => :venue).where('shows.datetime > ?', (DateTime.now - 1.hours))
  end

  #
  # You'll almost always want upcoming_public_shows instead
  #
  def upcoming_shows(limit = 5)
    shows_rel = upcoming_shows_rel
    shows_rel = upcoming_shows_rel.limit(limit) unless limit == :all
    @upcoming ||= shows_rel.all
    @upcoming
  end

  def played_shows(limit = 5)
    played = shows.select { |show| show.datetime_local_to_event < (DateTime.now - 1.hours) }
    return played if limit == :all
    played.take(limit)
  end

  def next_public_show
    upcoming_public_shows.empty? ? nil : upcoming_public_shows.first
  end

  def upcoming_public_shows
    upcoming_shows(:all).select(&:published?)
  end

  def next_show
    shows.build(:datetime => Show.next_datetime(shows.last))
    show = shows.pop
    show.chart = default_chart.dup!
    show
  end

  def as_widget_json(options = {})
    as_json(options.merge({:methods => ['venue', 'uuid'], :except => :members_only})).merge('performances' => upcoming_public_shows.as_json)
  end

  def as_full_calendar_json
    shows.includes(:event).collect do |p|
      { :title  => '',
        :start  => p.datetime_local_to_event,
        :allDay => false,
        :id     => p.id,
        :state  => p.state,
        :event_id => self.id
      }
    end
  end

  def as_json(options = {})
    super(options)
  end

  def assign_chart(chart)
    if already_has_chart(chart)
      self.errors[:base] << "Chart \"#{chart.name}\" has already been added to this event"
      return self
    end

    if is_free? && chart.has_paid_sections?
      self.errors[:base] << "Cannot add chart with paid sections to a free event"
      return self
    end
    chart.assign_to(self)
    self
  end

  def <=>(obj)
    return -1 unless obj.kind_of? Event

    self.name.downcase <=> obj.name.downcase
  end

  private
  
    #
    # This is a pretty basic validation to prevent them from entering an email in the phone
    # number field (we saw this in usability testing)
    # We can't disallow numbers because some people use them in their phones (718-555-4TIX)
    #
    def validate_contact_phone
      contains_at_sign = /\@/
      if (!contact_phone.nil?) && (contact_phone.match contains_at_sign)
        errors.add(:contact_phone, "doesn't look like a phone number.  Your changes have not been saved.")
      end
    end
  
    def already_has_chart(chart)
      !self.charts.select{|c| c.name == chart.name }.empty?
    end
end