require "awesome_print"
class SInventaire < ApplicationRecord
  acts_as_sorting :fields => {
    :date => {:name => "Date", :reorder => true},
    :done => {:name => "Fait ?", :reorder => true, :as => :boolean},
    :exhaustive => {:name => "Exhaustif ?", :reorder => true, :as => :boolean},
    :ok => {:name => "Validé ?", :reorder => true, :as => :boolean},
    :stock_ok => {:name => "Stock ok ?", :reorder => true, :as => :boolean},
    :actions => {:name => "Actions"},
  }
  
  has_many :s_inventaire_lines

  
  def generate_stock
    self.s_inventaire_lines.each do |s_inventaire_line|
      if s_inventaire_line.p_product_ref
        line_stocks = LineStock.where(p_product_ref: s_inventaire_line.p_product_ref)
        qte_difference = s_inventaire_line.qte - line_stocks.sum(:qte_available)
        if line_stocks.present?
          if qte_difference.positive?  #make a credit
            LineStock.create(:date => self.date, :p_product_ref => s_inventaire_line.p_product_ref, :description => "Entrée en stock par inventaire n°#{self.id}", :qte => qte_difference, :price_ht => s_inventaire_line.cc_pu_avg_ht * qte_difference, :s_inventaire => self, :s_inventaire_line => s_inventaire_line, :stockable => self)
          elsif qte_difference.negative?  #make a debit
            decr_line_stock = LineStock.create(:date => self.date, :p_product_ref => s_inventaire_line.p_product_ref, :description => "Sortie de stock par inventaire n°#{self.id}", :qte => qte_difference, :price_ht => 0.0, :s_inventaire => self, :s_inventaire_line => s_inventaire_line, :stockable => self)
            price = 0.0
            line_stock_usages = []

            qte_to_affect = qte_difference * -1
            LineStock.where(:p_product_ref_id => s_inventaire_line.p_product_ref).where("date <= ?", self.date).where("qte_available > 0.0").each do |ls|
              if qte_to_affect <= ls.qte_available
                qte_here = qte_to_affect
              else
                qte_here = ls.qte_available
              end

              qte_to_affect = qte_to_affect - qte_here

              lsu = LineStockUsage.create(:qte => qte_here, :line_stock => ls, :dest_line_stock_id => decr_line_stock.id)
              line_stock_usages << lsu
              price += lsu.price_ht
              ls.save

              break if qte_to_affect == 0.0
            end
            decr_line_stock.price_ht = price * -1
            decr_line_stock.save
          else #qte_difference == zero do nothing
          end
        else #make a credit
          LineStock.create(:date => self.date, :p_product_ref => s_inventaire_line.p_product_ref, :description => "Entrée en stock par inventaire n°#{self.id}", :qte => qte_difference, :price_ht => s_inventaire_line.cc_pu_avg_ht * qte_difference, :s_inventaire => self, :s_inventaire_line => s_inventaire_line, :stockable => self)
        end
      end
    end
    if self.exhaustive
      protected_refs = []
      self.s_inventaire_lines.each do |il|
        protected_refs << il.p_product_ref.id
      end
      line_stocks = LineStock.where.not(p_product_ref_id: protected_refs).where.not(qte_available: 0)
      line_stocks.each do |ls|
        decr_line_stock = LineStock.create(:date => self.date, :p_product_ref => ls.p_product_ref, :description => "Sortie de stock par inventaire n°#{self.id}", :qte => ls.qte_available * -1, :price_ht => 0.0, :s_inventaire => self, :stockable => self)
        lsu = LineStockUsage.create(:qte => ls.qte_available , :line_stock => ls, :dest_line_stock_id => decr_line_stock.id)
        decr_line_stock.price_ht = lsu.price_ht * -1
        decr_line_stock.save
        ls.save
      end

    end
    self.stock_ok = true
    self.save
  end
end