#ストーリー
-class Story < ActiveRecord::Base
+class Story < Peta::Binder
+ load_manifest
+ has_many :story_sheets
+ belongs_to :comic
+
+ validates :comic_id, :presence => true, :numericality => true, :existence => {:both => false}
+ validates :title, :presence => true, :length => {:maximum => 100}
+ validates :visible, :presence => true, :numericality => true, :inclusion => {:in => 0..1}
+ validates :t, :presence => true, :numericality => {:greater_than_or_equal_to => 0}
+
+ def supply_default
+ self.comic_id = nil
+ self.visible = 0 if self.visible.blank?
+ self.t = nil
+ end
+
+ def overwrite
+ end
+
+ def visible? operators
+ return false unless super
+ self.visible > 0
+ end
+
+ def disp_t
+ self.t + 1
+ end
+
+ def disp_t_by_text
+ I18n.t('stories.show.t', :t => self.disp_t)
+ end
+
+ def title_with_t
+ self.disp_t_by_text + ':' + self.title
+ end
+
+ def story_sheets_count
+ StorySheet.where(['story_sheets.story_id = ?', self.id]).count
+ end
+
+ def self.public_list_where
+ 'stories.visible > 0'
+ end
+
+ def self.list_order
+ 'stories.updated_at desc'
+ end
+
+ def self.list_opt
+ {:comic => {:author => {}} }
+ end
+
+ def self.by_author_list_includes
+ {
+ :comic => {
+ :author => {}
+ }
+ }
+ end
+
+ def self.list_json_opt
+ {:include => {:comic => {:include => {:author => {}}} }}
+ end
+
+ def self.show_opt
+ {:include => {:comic => {:author => {}} }}
+ end
+
+ def self.show_json_opt
+ {:include => {:comic => {:include => {:author => {}}} }}
+ end
+
+ def self.visible_count
+ Story.count 'visible > 0'
+ end
+
+ def destroy_with_story_sheet
+ res = false
+ Story.transaction do
+ self.story_sheets.each do |story_sheet|
+ raise ActiveRecord::Rollback unless story_sheet.destroy
+ end
+ raise ActiveRecord::Rollback unless self.destroy
+ res = true
+ end
+ res
+ end
+
+ def self.new_t comic_id
+ r = Story.max_t(comic_id)
+ r.blank? ? 0 : r.to_i + 1
+ end
+
+ def self.max_t comic_id
+ Story.maximum(:t, :conditions => ['comic_id = ?', comic_id])
+ end
+
+ def self.find_t comic_id, t
+ Story.find(:first, :conditions => ['comic_id = ? and t = ?', comic_id, t])
+ end
+
+ def self.collect_t story
+ r = Story.find(:all, :conditions => ['comic_id = ?', story.comic_id], :order => 't')
+ r.map {|s| s.t}
+ end
+
+ def self.serial? ary
+ i = 0
+ ary.compact.sort.each do |t|
+ break false unless t == i
+ i += 1
+ end
+ ary.compact.size == i
+ end
+
+ def self.validate_t story
+ Story.serial?(Story.collect_t(story))
+ end
+
+ def insert_shift
+ Story.update_all('t = t + 1', ['comic_id = ? and t >= ?', self.comic_id, self.t])
+ end
+
+ def lesser_shift old_t
+ self.t = 0 if self.t < 0
+ Story.update_all('t = t + 1', ['comic_id = ? and (t >= ? and t < ?)', self.comic_id, self.t, old_t])
+ end
+
+ def higher_shift old_t
+ nf = Story.find_t(self.comic_id, self.t)
+ max_t = Story.max_t(self.comic_id).to_i
+ self.t = max_t if self.t > max_t
+ Story.update_all('t = t - 1', ['comic_id = ? and (t > ? and t <= ?)', self.comic_id, old_t, self.t])
+ end
+
+ def update_shift old_t
+ if self.t > old_t
+ higher_shift old_t
+ else
+ lesser_shift old_t
+ end
+ end
+
+ def rotate old_t = nil
+ if self.new_record?
+ if self.t.blank?
+ self.t = Story.new_t self.comic_id
+ else
+ self.insert_shift
+ end
+ else
+ if self.t.blank?
+ else
+ self.update_shift old_t
+ end
+ end
+ end
+
+ def allow? operators
+ return nil if self.comic_id == nil
+ self.comic.own?(operators)
+ end
+
+ def store operators, old_t = nil
+ res = false
+ Story.transaction do
+ case self.allow? operators
+ when true
+ self.rotate old_t
+ when false
+ raise ActiveRecord::Forbidden
+ else
+ end
+ res = self.save
+ raise ActiveRecord::Rollback unless res
+ res = Story.validate_t(self)
+ unless res
+ self.errors.add :t, 'unserialized'
+ raise ActiveRecord::Rollback
+ end
+ end
+ res
+ end
+
+ def destroy_and_shorten
+ res = false
+ Story.transaction do
+ Story.update_all('t = t - 1', ['comic_id = ? and (t > ?)', self.comic_id, self.t])
+ raise ActiveRecord::Rollback unless self.destroy_with_story_sheet
+ res = true
+ end
+ res
+ end
+
+
end
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