class UserController < ApplicationController
  before_filter :authenticate_user!
  layout 'phone'

  alias :list :active_list

  def home
    flash.now[:notice] = t('messages.the_list_has_been_closed', list: List.model_name.human) if params[:list_closed].present?
    flash.now[:notice] = t("messages.#{params[:message]}") if params[:message].present? && params[:message] =~ /^\w+$/
    render layout: 'phone'
  end

  # POST /user/create_list {table_id: 1234}
  #DEPRICATED
  def create_list
    @table = Table.find(params[:table_id])
    if @table.occupied?
      respond_to do |format|
        format.html { redirect_to root_path, alert: t('table.is_occupied') }
        format.json { render json: js_alert(t('messages.table_is_occupied'))}
      end
    else
      if @list = List.from_table( @table, current_user )
      end
      respond_to do |format|
        format.html { redirect_to user_list_products_path }
        format.json { render json: js_notice('table_created')}
      end
    end
  end

  def table_info
    @table = Table.find(params[:table_id])
    res = {}
    res[:occupied] = @table.occupied?
    res[:reserved] = @table.reserved?
    res[:supplier_closed] = @table.supplier.closed?
    if list.present?
      res[:other_supplier] = true if list.supplier_id != @table.supplier_id
      res[:current_table_id] = list.table_id
    end
    respond_to do |format|
      format.json do
        render json: res
      end
    end
  end

  # GET /suppliers/1/product_list
  # GET /suppliers/1/product_list.json
  def list_products
    @supplier = list.supplier
    respond_to do |format|
      format.html do
        render layout: 'phone'
      end
      format.json do
        products = list.supplier.products
        products.include_relation(:product_categories)
        products.sort_by!{|p| p.product_category.try(:position) || 90000}
        h = products.inject({table_number: list.table_number}){|h, p| n = p.product_category.try(:name) || 'other'; h[n] ||= []; h[n] << p; h}
        render json: h
      end
    end
  end

  def join_occupied_table
    @table = Table.find(params[:table_id])
  end

  def request_to_join_occupied_table
    @table = Table.find(params[:table_id])
    if @list = @table.active_list
      unless @list.join_requests.include?(current_user.id)
        @list.join_requests << current_user.id
        @list.is_dirty
        @list.save
      end

    end 
    render nothing: true
  end

  def reject_join_request
    return unless params[:user_id]
    if list && list.join_requests.include?(params[:user_id])
      list.join_requests.delete(params[:user_id])
      list.is_dirty
      list.save
    end
    render js: ''
  end
  def approve_join_request
    return unless params[:user_id]
    @user = User.find(params[:user_id])
    if list && list.join_requests.include?(params[:user_id])
      list.join_requests.delete(params[:user_id])
      @user.active_list_id = list.id 
      list.add_user(@user)
      @user.save
      list.is_dirty
      list.save
    end
    render nothing: true
  end

  # POST /user/check_table_join_status table_id:12345
  def check_table_join_status
    @table = Table.find(params[:table_id])
    if @list = @table.active_list
      if @list.user_ids.include?(current_user.id)
        render json: {approved: true}
      elsif @list.join_requests.include?(current_user.id)
        render json: {waiting: true}
      else
        render json: {rejected: true}
      end
    else
      render json: {rejected: true}
    end
  end

  def list_products_for_table
    @table = Table.find(params[:table_id])
    respond_to do |format|
      format.html do
        render layout: 'phone'
      end
      format.json do
        products = @table.supplier.products
        products.include_relation(:product_categories)
        products.sort_by!{|p| p.product_category.try(:position) || 90000}
        h = products.inject({table_number: @table.number}){|h, p| n = p.product_category.try(:name) || 'other'; h[n] ||= []; h[n] << p; h}
        render json: h
      end
    end
  end

  # GET /user/current_list.json
  # Information about the currently active list
  # This information includes detailed order information
  def active_list
    respond_to do |format|
      format.html do
        redirect_to(root_path, alert: t('messages.there_is_no_list_active')) and return unless list.present?
        render layout: 'phone'
      end
      format.json do
        @list = list
        @list.orders.include_relations(product_orders: :product)
        h = @list.as_json

        # Handle join requests
        if @list.join_requests.any?
          h[:join_requests] = []
          for user in CouchPotato.database.load_document(@list.join_requests)
            h[:join_requests] << {user_id: user.id, user_email: user.email}
          end
        end

        h[:orders] = []
        h[:list_active] = @list.active?
        list_total = 0.0
        for order in @list.orders
          ho = {products: []}
          order_total = 0.0
          for product_order in order.product_orders
            order_total += (product_order.amount * product_order.price).round(2)
            ho[:products] << {name: product_order.product.name, id: product_order.product_id, number: product_order.amount, price: product_order.price}
          end
          ho[:total_amount] = order_total.round(2)
          ho[:state] = order.state
          list_total += ho[:total_amount]
          h[:orders] << ho
        end 
        h[:total_amount] = list_total.round(2)
        render json: h
      end
    end
  end

  # GET /user/list_info.json
  # Information about the currently active list
  # Fast version to verify wether the is is still currently active
  # for handle_active_list
  def list_info
    respond_to do |format|
      format.json do
        if !list.try(:active?)
          current_user.list_is_closed!
          render json: {list_active: false}
          return
        else
          list_obj = list.as_json.merge(list_active: list.active? )

          # Handle join requests
          if list.join_requests.any?
            list_obj[:join_requests] = []
            for user in CouchPotato.database.load_document(list.join_requests)
              list_obj[:join_requests] << {user_id: user.id, user_email: user.email}
            end
          end
          render json: list_obj
        end
      end
    end
  end

  # POST /user/needs_help.json
  def needs_help
    respond_to do |format|
      format.json do
        render json: {list_active: false} and return unless list.present?
        list.needs_help = true
        list.save
        render json: list.as_json.merge(list_active: list.active?)
      end
    end
  end

  # POST /user/list_needs_payment.json
  def list_needs_payment
    respond_to do |format|
      format.json do
        render json: {list_active: false} and return unless list.present?
        list.needs_payment = true
        list.save
        render json: list.as_json.merge(list_active: list.active?)
      end
    end
  end

  ##
  # Displays the closed lists of the user
  # GET /user/list_history
  def list_history
    @lists = current_user.lists
    render layout: 'phone'
  end

  ##
  # Displays a closed list of the user
  # GET /user/list_history/:list_id
  def history_list
    @list = List.find(params[:list_id])
    if params[:list_closed].present? && current_user.active_list_id == @list.id
      current_user.list_is_closed!
      flash.now[:notice] = t('messages.the_list_has_been_closed', list: List.model_name.human)
    end
    redirect_to user_root_path, alert: t('messages.illegal_history_list_attempt') and return unless @list.user_ids.include?(current_user.id)
    render layout: 'phone'
  end


  def order_selected_products
    if list.present?
      @list = list
    else
      @table = Table.find(params[:table_id])
      if @table.occupied?
        #TODO handle placint order on occupied table
      else
        if @list = List.from_table( @table, current_user )
        else
          #TODO handle second list creation for user
        end
      end
    end
    respond_to do |format|
      format.html do
        redirect_to(root_path, alert: t('messages.cannot_order_on_non_active_list')) and return unless @list.active?
        @list.place_order current_user, params[:products]
        redirect_to root_path, notice: t('messages.order_is_placed')
      end
      format.js do
        render js: js_alert(t('messages.cannot_order_on_non_active_list')) and return unless @list.active?
        @list.place_order current_user, params[:products]
        render js:  js_notice( t('messages.order_is_placed'), location: user_active_list_path )
      end
    end
  end
  def move_table
    return unless list.present?
    @table = Table.find(params[:table_id])
    if @table.occupied?
      render json: {occupied: true}
    else
      list.move_to_table @table
      render json: {occupied: false}
    end
  end
end