class RefactorOrderLogic < ActiveRecord::Migration
  def self.up
    # TODO: Combine migrations since foodsoft3-development into one file
    # and try to build a migration path from old data.

    # articles
    rename_column :articles, :net_price, :price
    remove_column :articles, :gross_price

    # orders
    drop_table :orders
    drop_table :group_order_results
    drop_table :order_article_results
    drop_table :group_order_article_results
    GroupOrder.delete_all; OrderArticle.delete_all; GroupOrderArticle.delete_all; GroupOrderArticleQuantity.delete_all

    create_table :orders do |t|
      t.references :supplier
      t.text :note
      t.datetime :starts
      t.datetime :ends
      t.string :state, :default => "open"   # Statemachine ... open -> finished -> closed
      t.integer :lock_version, :default => 0, :null => false
      t.integer :updated_by_user_id
    end

    # invoices
    add_column :invoices, :order_id, :integer
    add_column :invoices, :deposit, :decimal, :precision => 8, :scale => 2, :default => 0.0,  :null => false
    add_column :invoices, :deposit_credit, :decimal, :precision => 8, :scale => 2, :default => 0.0,  :null => false

    # comments
    drop_table :comments
    create_table :order_comments do |t|
      t.references :order
      t.references :user
      t.text :text
      t.datetime :created_at
    end

    # article_prices
    create_table :article_prices do |t|
      t.references :article
      t.decimal :price, :precision => 8, :scale => 2, :default => 0.0, :null => false
      t.decimal :tax, :precision => 8, :scale => 2, :default => 0.0, :null => false
      t.decimal :deposit, :precision => 8, :scale => 2, :default => 0.0, :null => false
      t.integer :unit_quantity
      t.datetime :created_at
    end
    # Create price history for every Article
    Article.all.each do |a|
      a.article_prices.create :price => a.price, :tax => a.tax,
        :deposit => a.deposit, :unit_quantity => a.unit_quantity
    end
    # Every Article has now a Category. Fix it if neccessary.
    Article.all(:conditions => { :article_category_id => nil }).each do |article|
        article.update_attribute(:article_category, ArticleCategory.first)
    end
    # order-articles
    add_column :order_articles, :article_price_id, :integer

    # ordergroups
    add_column :groups, :deleted_at, :datetime
  end

  def self.down
  end
end