[pettanr/pettanr.git] / app / models / ground_picture.rb

class GroundPicture < ActiveRecord::Base
  include ElementInspire
  belongs_to :panel
  belongs_to :picture
  
  validates :panel_id, :numericality => {:allow_blank => true}
  validates :repeat, :numericality => true, :inclusion => { :in => 0..3 }
  validates :x, :numericality => true
  validates :y, :numericality => true
  validates :picture_id, :numericality => true, :existence => {:both => false}
  validates :z, :presence => true, :numericality => {:greater_than => 0}
  validates :t, :presence => true, :numericality => {:greater_than_or_equal_to => 0}
  
  @@repeat_texts = ['repeat', 'repeat-x', 'repeat-y', 'no-repeat']
  
  before_validation :valid_encode
  
  def valid_encode
    ['caption'].each do |a|
      next if attributes[a] == nil
      raise Pettanr::BadRequest unless attributes[a].valid_encoding?
    end
  end
  
  def supply_default
    self.x = 0
    self.y = 0
    self.repeat = 0
    if self.panel
      self.t = self.panel.new_t 
      self.z = self.panel.new_z 
    end
  end
  
  def overwrite pid
    self.panel_id = pid
  end
  
  def visible? roles
    if MagicNumber['run_mode'] == 0
      return false unless guest_role_check(roles)
    else
      return false unless reader_role_check(roles)
    end
    return true if self.panel.own?(roles)
    self.panel.visible? roles
  end
  
  def opt_div_style full_url, spot = nil, opacity = 20
    o = (spot and spot != self) ? "opacity: #{opacity.to_f/100}; filter:alpha(opacity=#{opacity});" : ''
    "position: absolute; width:#{self.panel.width}px; height:#{self.panel.height}px; top: 0px; left: 0px;  z-index:#{self.z}; background-image: url(#{full_url}); background-repeat: #{self.repeat_text}; background-position: #{self.x}px #{self.y}px; #{o}"
  end
  
  def tmb_opt_img_tag
    tw, th = PettanImager.thumbnail_size(self.picture.width, self.picture.height)
    {:src => self.picture.url, :width => tw, :height => th, :alt => self.caption}
  end
  
  def tag_id c = nil
    'panel' + tag_panel_id + 'ground_picture' + tag_element_id + c.to_s
  end
  
  def field_tag_id f
    self.tag_id + f.to_s
  end
  
  def tag_panel_id
    self.panel.new_record? ? '0' : self.panel.id.to_s
  end
  
  def tag_element_id
    self.new_record? ? '0' : self.id.to_s
  end
  
  def tag_element_type
    'ground_picture'
  end
  
  def field_tree f
    'panels-' + self.tag_panel_id + '-ground_pictures_attributes-' + self.tag_element_id + '-' + f.to_s
  end
  
  def repeat_text
    @@repeat_texts[self.repeat]
  end
  
  def self.default_page_size
    25
  end
  
  def self.max_page_size
    100
  end
  
  def self.page prm = nil
    page = prm.to_i
    page = 1 if page < 1
    page
  end
  
  def self.page_size prm = self.default_page_size
    page_size = prm.to_i
    page_size = self.max_page_size if page_size > self.max_page_size
    page_size = self.default_page_size if page_size < 1
    page_size
  end
  
  def self.list_where
    'panels.publish > 0'
  end
  
  def self.mylist_where au
    ['panels.author_id = ?', au.id]
  end
  
  def self.himlist_where au
    ['panels.author_id = ? and panels.publish > 0', au.id]
  end
  
  def self.list page = 1, page_size = self.default_page_size
    GroundPicture.where(self.list_where()).includes(GroundPicture.list_opt).order('ground_pictures.updated_at desc').offset((page -1) * page_size).limit(page_size)
  end
  
  def self.mylist au, page = 1, page_size = Author.default_ground_picture_page_size
    GroundPicture.where(self.mylist_where(au)).includes(GroundPicture.list_opt).order('ground_pictures.updated_at desc').offset((page -1) * page_size).limit(page_size)
  end
  
  def self.himlist au, page = 1, page_size = Author.default_ground_picture_page_size
    GroundPicture.where(self.himlist_where(au)).includes(GroundPicture.list_opt).order('ground_pictures.updated_at desc').offset((page -1) * page_size).limit(page_size)
  end
  
  def self.list_paginate page = 1, page_size = self.default_page_size
    Kaminari.paginate_array(Array.new(GroundPicture.where(self.list_where()).includes(GroundPicture.list_opt).count, nil)).page(page).per(page_size)
  end
  
  def self.mylist_paginate au, page = 1, page_size = Author.default_ground_picture_page_size
    Kaminari.paginate_array(Array.new(GroundPicture.where(self.mylist_where(au)).includes(GroundPicture.list_opt).count, nil)).page(page).per(page_size)
  end
  
  def self.himlist_paginate au, page = 1, page_size = Author.default_ground_picture_page_size
    Kaminari.paginate_array(Array.new(GroundPicture.where(self.himlist_where(au)).includes(GroundPicture.list_opt).count, nil)).page(page).per(page_size)
  end
  
  def self.list_opt
    {:panel => {:author => {}}, :picture => {:artist => {}, :license => {}} }
  end
  
  def self.list_json_opt
    {:include => {:panel => {:include => {:author => {}}}, :picture => {:include => {:artist => {}, :license => {}}} }}
  end
  
  def self.show cid, au
    opt = {}
    opt.merge!(GroundPicture.show_opt)
    res = GroundPicture.find(cid, opt)
    raise ActiveRecord::Forbidden unless res.visible?(au)
    res
  end
  
  def self.show_opt
    {:include => {:panel => {:author => {}}, :picture => {:artist => {}, :license => {}}}}
  end
  
  def self.show_json_opt
    {:include => {:panel => {:include => {:author => {}}}, :picture => {:include => {:artist => {}, :license => {}}} }}
  end
  
  def store au
    if self.new_record?
      self.panel.ground_pictures.build(self.attributes)
    else
      self.panel.ground_pictures.each do |ground_picture|
        next unless ground_picture == self
        attr = self.attributes
        attr.delete 'id'
        ground_picture.attributes = attr
        break
      end
    end
    self.panel.store({}, au)
  end
  
  def remove au
    self.panel.remove_element(self, au)
  end
  
  def scenario
    if caption.blank?
      ''
    else
      '<p>' + ERB::Util.html_escape(self.caption) + '</p>'
    end
  end
  
  def plain_scenario
    if caption.blank?
      ''
    else
      self.caption + "\n"
    end
  end
  
end