require_relative '../helpers/indented_grid'
require 'net/http'
require 'json'
require 'ostruct'

Coprl::Presenters.define(:drag_drop) do
  helpers Demo::Helpers::IndentedGrid

  attach :top_nav
  attach :pattern_drawer
  page_title 'Drag and Drop Example'

  helpers do
    def dragons
      session = context[:session]
      return [] if session.nil?
      session[:dragons] ||=
          [{id: 1, sort: 4, name: 'Jabberwocky', body: 'Alice in Wonderland, Alice Through the Looking Glass'},
           {id: 2, sort: 3, name: 'Hydra', body: 'Hercules, Jason and the Argonauts'},
           {id: 3, sort: 2, name: 'Drogon, Viserion, Rhaegal', body: 'Game of Thrones'},
           {id: 4, sort: 1, name: 'Spike', body: 'My Little Pony: The Movie'}].to_json
      JSON.parse(session[:dragons], object_class: OpenStruct)
    end
  end

  indented_grid do
    grid do
      column 7 do
        headline 'Select a Dragon'
        subtitle 'Drag and Drop to reorder the dragons, or drop on card to right to learn more about your Dragon'
        list do
          dragons.sort_by(&:sort).each do |dragon|
            line draggable: {zone: :drag_zone_1, source_id: dragon.id, dragon_name: dragon.name, dragon_info: dragon.body},
                 drop_zone: {zone: :drag_zone_1} do
              text dragon.name

              event :drag do
                snackbar "#{dragon.name} is a real drag!"
              end

              event :dragend do
                snackbar "Done dragging #{dragon.name} around!"
              end

              event :drop do
                posts '_dragon_drop_change_order_', target_id: dragon.id
                loads :drag_drop
              end

              event :dropped do
                snackbar "Dropped the #{dragon.name}. Whoops!"
              end
            end
          end
        end
      end
      column 5 do
        attach :drop_zone
        content drop_zone: {zone: :drag_zone_2}, padding: :top do
          card do
            blank
            text "Try to drop something here"
            blank
          end
        end
      end
    end

    attach :code, file: __FILE__
  end
end

Coprl::Presenters.define(:drop_zone) do

  content id: :drop_zone, drop_zone: {zone: 'drag_zone_1'} do
    card do
      blank
      text "Drop a dragon here..."
      text "Last dropped dragon: **#{context.fetch(:dragon_name)}**" if context.key?(:dragon_name)
      text "Appeard In: **#{context.fetch(:dragon_info)}**" if context.key?(:dragon_info)
      blank
    end

    event :drop do
      # posts '_echo_'
      replaces :drop_zone, :drop_zone #, dragon_name: last_response.dragon_name
    end
  end
end