rooms_controller.rb

class RoomsController < ApplicationController
  before_action :set_room, except: [:index, :new, :create]
  before_action :authenticate_user!, except: [:show]
  before_action :is_authorised, only: [:listing, :pricing, :description, :photo_upload, :amenities, :location, :update]

  def index
    @rooms = current_user.rooms
  end

  def new
    @hotels = current_user.hotels
    @room = current_user.rooms.build
  end

  def create
    @room = current_user.rooms.build(room_params)
    if @room.save
      redirect_to listing_room_path(@room), notice: "Сохранено..."
    else
      flash[:alert] = "Что-то пошло не так..."
      render :new
    end
  end

  def show
    @pictures = @room.pictures
    @guest_reviews = @room.guest_reviews
  end

  def listing
    @hotels = current_user.hotels
  end

  def pricing
  end

  def description
  end

  def photo_upload
    @pictures = @room.pictures
  end

  def amenities
  end

  def location
  end

  def update

    new_params = room_params
    new_params = room_params.merge(active: 1) if is_ready_room

    if @room.update(new_params)
      flash[:notice] = "Сохранено..."
    else
      flash[:alert] = "Что-то пошло не так..."
    end
    redirect_back(fallback_location: request.referer)
  end

  # --- Reservations ---
  def preload
    today = Date.today
    reservations = @room.reservations.where("(start_date >= ? OR end_date >= ?) AND status = ?", today, today, 1)
    unavailable_dates = @room.calendars.where("status = ? AND day > ?", 1, today)
    special_dates = @room.calendars.where("status = ? AND day > ? AND price <> ?", 0, today, @room.price)

    render json: {
      reservations: reservations,
      unavailable_dates: unavailable_dates,
      special_dates: special_dates
    }
  end

  def preview
    start_date = Date.parse(params[:start_date])
    end_date = Date.parse(params[:end_date])

    output = {
      conflict: is_conflict(start_date, end_date, @room)
    }

    render json: output
  end

  private
    def is_conflict(start_date, end_date, room)
      check = room.reservations.where("(? < start_date AND end_date < ?) AND status = ?", start_date, end_date, 1)
      check_2 = room.calendars.where("day BETWEEN ? AND ? AND status = ?", start_date, end_date, 1).limit(1)

      check.size > 0 || check_2.size > 0 ? true : false
    end

    def set_room
      @room = Room.find(params[:id])
    end

    def is_authorised
      redirect_to root_path, alert: "У вас нет доступа" unless current_user.id == @room.user_id
    end

    def is_ready_room
      !@room.active && !@room.price.blank? && !@room.listing_name.blank? && !@room.pictures.blank?
    end

    def room_params
      params.require(:room).permit(:home_type, :room_type, :accommodate, :bed_room, :bath_room, :listing_name, :summary, :address, :is_tv, :is_kitchen, :is_air, :is_heating, :is_internet, :price, :active, :instant, :hotel_id)
    end
end