# Copyright (C) 2024 Manuel Bustillo

# frozen_string_literal: true

class AffinitiesController < ApplicationController
  before_action :set_group

  def index
    overridden_affinities = @group.affinities
      .each_with_object({}) { |affinity, acc| acc[affinity.another_group(@group).id] = affinity.discomfort }
    Group.pluck(:id).index_with { |group_id| overridden_affinities[group_id] || GroupAffinity::NEUTRAL }
      .then { |affinities| render json: affinities }
  end

  def bulk_update
    params.expect(affinities: [[:group_id, :discomfort]]).map(&:to_h).map do |affinity|
      {
        group_a_id: @group.id,
        group_b_id: affinity[:group_id],
        discomfort: affinity[:discomfort]
      }
    end.then { |affinities| GroupAffinity.upsert_all(affinities) }
    render json: {}, status: :ok

  rescue ActiveRecord::InvalidForeignKey
    render json: { error: 'At least one of the group IDs provided does not exist.' }, status: :bad_request
  rescue ActiveRecord::StatementInvalid
    render json: { error: 'Invalid group ID or discomfort provided.' }
  end

  private

  def set_group
    @group = Group.find(params[:group_id])
  end
end