class ReservesController < ApplicationController
  before_action :set_reserve, only: [:show, :edit, :update, :destroy]
  before_action :check_policy, only: [:index, :new, :create]
  before_action :prepare_options, only: [:new, :edit]
  before_action :get_user, only: [:index, :new]
  before_action :store_page
  after_action :convert_charset, only: :index
  helper_method :get_manifestation
  helper_method :get_item

  # GET /reserves
  # GET /reserves.json
  def index
    unless current_user.has_role?('Librarian')
      if @user
        if current_user == @user
          redirect_to reserves_url(format: params[:format])
          return
        else
          access_denied; return
        end
      end
    end

    search = Reserve.search
    query = @query = params[:query].to_s.strip
    sort_by = params[:sort_by].to_s.downcase
    if sort_by == 'title'
      @sort_by = :title
      sort_column = :title_transcription
      order = :asc
    else
      @sort_by = :created_at
      sort_column = :created_at
      order = :desc
    end
    if ['txt', 'rss'].include?(params[:format].to_s.downcase)
      per_page = 500
      page = 1
    else
      per_page = Reserve.default_per_page
      page = params[:page] || 1
    end

    if (params[:mode] == 'hold') && current_user.has_role?('Librarian')
      search.build do
        with(:hold).equal_to true
      end
    else
      if @user
        user = @user
        if current_user.has_role?('Librarian')
          search.build do
            with(:username).equal_to user.username
          end
        else
          access_denied; return
        end
      else
        unless current_user.has_role?('Librarian')
          search.build do
            with(:username).equal_to current_user.username
          end
        end
      end
    end

    begin
      reserved_from = Time.zone.parse(params[:reserved_from])
      @reserved_from = params[:reserved_from].to_s.strip
    rescue
      reserved_from = nil
    end

    begin
      reserved_until = Time.zone.parse(params[:reserved_until])
      @reserved_until = params[:reserved_until].to_s.strip
    rescue
      reserved_until = nil
    end

    if params[:state].present?
      state = params[:state].downcase
    end

    search.build do
      fulltext query
      if reserved_from
        with(:created_at).greater_than_or_equal_to reserved_from.beginning_of_day
      end
      if reserved_until
        with(:created_at).less_than reserved_until.tomorrow.beginning_of_day
      end
      order_by sort_column, order
      with(:state).equal_to state if state
      facet :state
      paginate page: page.to_i, per_page: per_page
    end

    @reserves = search.execute.results
    @state_facet = search.facet(:state).rows

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @reserves }
      format.rss  { render layout: false }
      format.atom
      format.txt
    end
  end

  # GET /reserves/1
  # GET /reserves/1.json
  def show
    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @reserve }
    end
  end

  # GET /reserves/new
  # GET /reserves/new.json
  def new
    @reserve = Reserve.new

    if current_user.has_role?('Librarian')
      @reserve.user = @user
    else
      if @user.present?
        if @user != current_user
          access_denied; return
        end
      end
      @reserve.user_number = current_user.profile.user_number
    end

    @manifestation = Manifestation.where(id: params[:manifestation_id]).first
    if @manifestation
      authorize @manifestation, :show?
      @reserve.manifestation = @manifestation
      if @reserve.user
        # @reserve.expired_at = @manifestation.reservation_expired_period(@reserve.user).days.from_now.end_of_day
        if @manifestation.is_reserved_by?(@reserve.user)
          flash[:notice] = t('reserve.this_manifestation_is_already_reserved')
          redirect_to @manifestation
          return
        end
      end
    end
  end

  # GET /reserves/1/edit
  def edit
    @reserve.item_identifier = @reserve.item.try(:item_identifier)
  end

  # POST /reserves
  # POST /reserves.json
  def create
    @reserve = Reserve.new(reserve_params)
    @reserve.set_user

    if current_user.has_role?('Librarian')
      unless @reserve.user
        @reserve.user = @user
      end
    else
      if @reserve.user != current_user
        if @user != current_user
          access_denied; return
        end
      end
    end

    respond_to do |format|
      if @reserve.save
        @reserve.transition_to!(:requested)

        format.html { redirect_to @reserve, notice: t('controller.successfully_created', model: t('activerecord.models.reserve')) }
        format.json { render json: @reserve, status: :created, location: reserve_url(@reserve) }
      else
        prepare_options
        format.html { render action: "new" }
        format.json { render json: @reserve.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /reserves/1
  # PUT /reserves/1.json
  def update
    unless current_user.has_role?('Librarian')
      if @reserve.user != current_user
        access_denied; return
      end
    end
    @reserve.assign_attributes(reserve_update_params)

    if @reserve.valid?
      if params[:mode] == 'cancel'
        @reserve.transition_to!(:canceled)
      else
        if @reserve.retained?
          if @reserve.item_identifier.present? && (@reserve.force_retaining == '1')
            @reserve.transition_to!(:retained)
          end
        else
          @reserve.transition_to!(:retained) if @reserve.item_identifier.present?
        end
      end
    end

    respond_to do |format|
      if @reserve.save
        if @reserve.current_state == 'canceled'
          flash[:notice] = t('reserve.reservation_was_canceled')
        else
          flash[:notice] = t('controller.successfully_updated', model: t('activerecord.models.reserve'))
        end
        format.html { redirect_to @reserve }
        format.json { head :no_content }
      else
        prepare_options
        format.html { render action: "edit" }
        format.json { render json: @reserve.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /reserves/1
  # DELETE /reserves/1.json
  def destroy
    @reserve.destroy
    # flash[:notice] = t('reserve.reservation_was_canceled')

    if @reserve.manifestation.is_reserved?
      if @reserve.item
        retain = @reserve.item.retain(User.find(1)) # TODO: システムからの送信ユーザの設定
        if retain.nil?
          flash[:message] = t('reserve.this_item_is_not_reserved')
        end
      end
    end

    respond_to do |format|
      format.html { redirect_to reserves_url, notice: t('controller.successfully_deleted', model: t('activerecord.models.reserve')) }
      format.json { head :no_content }
    end
  end

  private

  def set_reserve
    @reserve = Reserve.find(params[:id])
    authorize @reserve
  end

  def check_policy
    authorize Reserve
  end

  def reserve_params
    if current_user.try(:has_role?, 'Librarian')
      params.fetch(:reserve, {}).permit(
        :manifestation_id, :user_number,
        :pickup_location_id, :expired_at,
        :manifestation_id, :item_identifier, :user_number,
        :request_status_type, :canceled_at, :checked_out_at,
        :expiration_notice_to_patron, :expiration_notice_to_library, :item_id,
        :retained_at, :postponed_at, :force_retaining
      )
    elsif current_user.try(:has_role?, 'User')
      params.fetch(:reserve, {}).permit(
        :user_number, :manifestation_id, :expired_at, :pickup_location_id
      )
    end
  end

  def reserve_update_params
    if current_user.try(:has_role?, 'Librarian')
      params.fetch(:reserve, {}).permit(
        :manifestation_id, :user_number,
        :pickup_location_id, :expired_at,
        :manifestation_id, :item_identifier, :user_number,
        :request_status_type, :canceled_at, :checked_out_at,
        :expiration_notice_to_patron, :expiration_notice_to_library, :item_id,
        :retained_at, :postponed_at, :force_retaining
      )
    elsif current_user.try(:has_role?, 'User')
      params.fetch(:reserve, {}).permit(
        :expired_at, :pickup_location_id
      )
    end
  end

  def prepare_options
    @libraries = Library.real.order(:position)
  end
end