# Copyright (C) 2024-2025 LibreWeddingPlanner contributors

# frozen_string_literal: true

class TableSimulatorJob < ApplicationJob
  queue_as :default

  MIN_PER_TABLE = 8
  MAX_PER_TABLE = 10

  def perform(wedding_id, tables_arrangement_id)
    Rails.logger.info "Starting table simulation #{tables_arrangement_id} for wedding #{wedding_id}"
    ActsAsTenant.with_tenant(Wedding.find(wedding_id)) do
      engine = VNS::Engine.new

      engine.add_optimization(Tables::Swap)
      engine.add_optimization(Tables::Shift)

      tables_arrangement = TablesArrangement.find(tables_arrangement_id)

      initial_solution = Tables::Distribution.new(
        min_per_table: MIN_PER_TABLE,
        max_per_table: MAX_PER_TABLE,
        tables_arrangement_id:
      )

      initial_solution.random_distribution(Guest.potential.shuffle)

      initial_solution.save!

      engine.notify_progress do |current_progress|
        tables_arrangement.update_columns(status: :in_progress, progress: current_progress)
      end

      engine.on_better_solution do |better_solution|
        better_solution.save!
        tables_arrangement.update_columns(discomfort: better_solution.discomfort) # TODO: remove?
      end

      engine.initial_solution = initial_solution

      engine.target_function(&:discomfort)

      best_solution = engine.run

      best_solution.save!

      tables_arrangement.update_columns(status: :completed)
    end
  end
end