module MemberFilter
  extend ActiveSupport::Concern

  def filtered_members
    members = Member.all.order(sort_params.merge(number: :asc))

    filters = params.permit(:prefers_postal, :display_name, :email, :identification_number, status: [], category: [])

    Rails.logger.info filters

    status   = filters.fetch(:status, []) - ['any', '']
    category = filters.fetch(:category, []) - ['any', '']

    members = members.where(prefers_postal: true)  if filters[:prefers_postal] == 'yes'
    members = members.where(prefers_postal: false) if filters[:prefers_postal] == 'no'
    members = members.where(status: status)        if status != []
    members = members.where(category: category)    if category != []

    members.ransack(
      display_name_i_cont: filters[:display_name],
      email_i_cont: filters[:email],
      identification_number_i_cont: filters[:identification_number],
    ).result
  end

  def sort_params
    field, direction = params.fetch(:sort, "").split(".")

    directions = %w[ asc desc ]
    fields = %w[ number expires_on joined_on email status display_name ]

    if directions.include?(direction) && fields.include?(field)
      { field => direction }
    else
      { number: :asc }
    end
  end
end