bustikiller
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81 lines
2.3 KiB
Ruby
81 lines
2.3 KiB
Ruby
# Copyright (C) 2024-2025 LibreWeddingPlanner contributors
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# frozen_string_literal: true
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require_relative '../../extensions/tree_node_extension'
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module Tables
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class Distribution
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class << self
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def digest(wedding)
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Digest::UUID.uuid_v5(wedding.id, wedding.guests.potential.order(:id).pluck(:id).join)
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end
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end
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attr_accessor :tables, :min_per_table, :max_per_table, :hierarchy
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def initialize(min_per_table:, max_per_table:, hierarchy: AffinityGroupsHierarchy.new)
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@min_per_table = min_per_table
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@max_per_table = max_per_table
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@hierarchy = hierarchy
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@tables = []
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end
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def random_distribution(people, random: Random.new)
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min_tables = (people.count * 1.0 / @max_per_table).ceil
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max_tables = (people.count * 1.0 / @min_per_table).ceil
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table_size = random.rand(min_tables..max_tables)
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@tables = people.in_groups(table_size, false)
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.map { |group| Table.new(group) }
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.each { |table| table.min_per_table = @min_per_table }
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.each { |table| table.max_per_table = @max_per_table }
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end
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def discomfort
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@tables.map do |table|
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local_discomfort(table)
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end.sum
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end
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def inspect
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"#{@tables.count} tables, discomfort: #{discomfort}"
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end
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def deep_dup
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self.class.new(min_per_table: @min_per_table, max_per_table: @max_per_table,
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hierarchy: @hierarchy).tap do |new_distribution|
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new_distribution.tables = @tables.map(&:dup)
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end
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end
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def save!
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ActiveRecord::Base.transaction do
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arrangement = TablesArrangement.create!
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records_to_store = []
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tables.each_with_index do |table, table_number|
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table.each do |person|
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records_to_store << { guest_id: person.id, tables_arrangement_id: arrangement.id, table_number: }
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end
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end
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Seat.insert_all!(records_to_store)
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arrangement.update!(
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discomfort:,
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digest: self.class.digest(tables.first.first.wedding)
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)
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end
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end
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private
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def local_discomfort(table)
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table.discomfort ||= DiscomfortCalculator.new(table:, hierarchy:).calculate
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table.freeze
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table.discomfort
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end
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end
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end
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