class Api::V1::ParksController < ApplicationController
  DEFAULT_PAGE_SIZE = 10
  before_action :set_park, only: :show

  def index
    parks = Park.all
    if params[:state].present?
      parks = parks.where("states like '%' || ? || '%'", params[:state])
    end
    render json: parks.limit(per_page).offset((page - 1) * per_page)
  end

  def show
    render json: @park
  end

  private

  def per_page
    (params[:per_page].presence || DEFAULT_PAGE_SIZE).to_i
  end

  def page
    (params[:page].presence || 1).to_i
  end

  def set_park
    @park = Park.find_by(code: params[:code])
    head :not_found unless @park.present?
  end
end