app/controllers/notifications_controller.rb
# frozen_string_literal: true

#   Copyright (c) 2010-2011, Diaspora Inc.  This file is
#   licensed under the Affero General Public License version 3 or later.  See
#   the COPYRIGHT file.

class NotificationsController < ApplicationController
  before_action :authenticate_user!

  def index
    conditions = {recipient_id: current_user.id}
    types = NotificationService::NOTIFICATIONS_JSON_TYPES
    if params[:type] && types.has_key?(params[:type])
      conditions[:type] = types[params[:type]]
    end
    if params[:show] == "unread" then conditions[:unread] = true end
    page = params[:page] || 1
    per_page = params[:per_page] || 25
    @notifications = WillPaginate::Collection.create(page, per_page, Notification.where(conditions).count ) do |pager|
      result = Notification.where(conditions)
                           .includes(:target, actors: :profile)
                           .order("updated_at desc")
                           .limit(pager.per_page)
                           .offset(pager.offset)

      pager.replace(result)
    end
    @group_days = @notifications.group_by {|note| note.updated_at.strftime("%Y-%m-%d") }

    @unread_notification_count = current_user.unread_notifications.count

    @grouped_unread_notification_counts = {}

    types.each_with_object(current_user.unread_notifications.group_by(&:type)) {|(name, type), notifications|
      @grouped_unread_notification_counts[name] = notifications.has_key?(type) ? notifications[type].count : 0
    }

    respond_to do |format|
      format.html
      format.xml { render xml: @notifications.to_xml }
      format.json {
        render json: render_as_json(@unread_notification_count, @grouped_unread_notification_counts, @notifications)
      }
    end
  end

  def update
    note = Notification.where(recipient_id: current_user.id, id: params[:id]).first
    if note
      note.set_read_state(params[:set_unread] != "true")

      respond_to do |format|
        format.json { render json: {guid: note.id, unread: note.unread} }
      end
    else
      respond_to do |format|
        format.json { render json: {}.to_json }
      end
    end
  end

  def default_serializer_options
    {
      context: self,
      root:    false
    }
  end

  def read_all
    current_type = NotificationService::NOTIFICATIONS_JSON_TYPES[params[:type]]
    notifications = Notification.where(recipient_id: current_user.id, unread: true)
    notifications = notifications.where(type: current_type) if params[:type]
    notifications.update_all(unread: false)
    respond_to do |format|
      if current_user.unread_notifications.count > 0
        format.html { redirect_to notifications_path }
        format.mobile { redirect_to notifications_path }
      else
        format.html { redirect_to stream_path }
        format.mobile { redirect_to stream_path }
      end
      format.xml { render xml: {}.to_xml }
      format.json { render json: {}.to_json }
    end
  end

  private

  def render_as_json(unread_count, unread_count_by_type, notification_list)
    {
      unread_count:         unread_count,
      unread_count_by_type: unread_count_by_type,
      notification_list:    notification_list.map {|note|
        NotificationSerializer.new(note, default_serializer_options).as_json
      }
    }.as_json
  end
end
