# frozen_string_literal: true

# = Informations
#
# == License
#
# Ekylibre - Simple agricultural ERP
# Copyright (C) 2008-2009 Brice Texier, Thibaud Merigon
# Copyright (C) 2010-2012 Brice Texier
# Copyright (C) 2012-2014 Brice Texier, David Joulin
# Copyright (C) 2015-2023 Ekylibre SAS
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see http://www.gnu.org/licenses.
#
# == Table: plant_counting_items
#
#  created_at        :datetime         not null
#  creator_id        :integer(4)
#  id                :integer(4)       not null, primary key
#  lock_version      :integer(4)       default(0), not null
#  plant_counting_id :integer(4)       not null
#  updated_at        :datetime         not null
#  updater_id        :integer(4)
#  value             :integer(4)       not null
#

class PlantCountingItem < ApplicationRecord
  belongs_to :plant_counting, inverse_of: :items

  after_save :update_average_value
  after_destroy :update_average_value

  # [VALIDATORS[ Do not edit these lines directly. Use `rake clean:validations`.
  validates :value, presence: true, numericality: { only_integer: true, greater_than: -2_147_483_649, less_than: 2_147_483_648 }
  validates :plant_counting, presence: true
  # ]VALIDATORS]
  validates :value, numericality: { only_integer: true, greater_than: 0, less_than: 2_147_483_648 }

  delegate :rows_count, :implanter_working_width, to: :plant_counting

  def update_average_value
    plant_counting.reload
    items = plant_counting.items
    average_value = items.any? ? items.average(:value) : 0
    plant_counting.update_column(:average_value, average_value)
  end

  def siblings
    plant_counting.items
  end

  def measured_seeding_density
    density = value * 10_000 / implanter_working_width.to_d(:meter)
    density.in :unity_per_hectare
  end
end
