impress/app/models/pet.rb

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require 'rocketamf/remote_gateway'
require 'ostruct'
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class Pet < ActiveRecord::Base
GATEWAY_URL = 'http://www.neopets.com/amfphp/gateway.php'
PET_VIEWER = RocketAMF::RemoteGateway.new(GATEWAY_URL).
service('CustomPetService').action('getViewerData')
PET_NOT_FOUND_REMOTE_ERROR = 'PHP: Unable to retrieve records from the database.'
WARDROBE_PATH = '/wardrobe'
belongs_to :pet_type
attr_reader :items, :pet_state
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attr_accessor :contributor
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scope :with_pet_type_color_ids, lambda { |color_ids|
joins(:pet_type).where(PetType.arel_table[:id].in(color_ids))
}
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def load!(options={})
options[:locale] ||= I18n.default_locale
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I18n.with_locale(options.delete(:locale)) do
use_viewer_data(fetch_viewer_data(options.delete(:timeout)), options)
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end
true
end
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def use_viewer_data(viewer_data, options={})
options[:item_scope] ||= Item.scoped
pet_data = viewer_data[:custom_pet]
self.pet_type = PetType.find_or_initialize_by_species_id_and_color_id(
pet_data[:species_id].to_i,
pet_data[:color_id].to_i
)
self.pet_type.body_id = pet_data[:body_id]
self.pet_type.origin_pet = self
biology = pet_data[:biology_by_zone]
biology[0] = nil # remove effects if present
@pet_state = self.pet_type.add_pet_state_from_biology! biology
@pet_state.label_by_pet(self, pet_data[:owner])
@items = Item.collection_from_pet_type_and_registries(self.pet_type,
viewer_data[:object_info_registry], viewer_data[:object_asset_registry],
options[:item_scope])
end
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def fetch_viewer_data(timeout=4)
begin
neopets_language_code = I18n.compatible_neopets_language_code_for(I18n.locale)
envelope = PET_VIEWER.request([name, 0]).post(
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:timeout => timeout,
:headers => {
'Cookie' => "lang=#{neopets_language_code}"
}
)
rescue RocketAMF::RemoteGateway::AMFError => e
if e.message == PET_NOT_FOUND_REMOTE_ERROR
raise PetNotFound, "Pet #{name.inspect} does not exist"
end
raise DownloadError, e.message
rescue RocketAMF::RemoteGateway::ConnectionError => e
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raise DownloadError, e.message, e.backtrace
end
HashWithIndifferentAccess.new(envelope.messages[0].data.body)
end
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def wardrobe_query
{
:name => self.name,
:color => self.pet_type.color.id,
:species => self.pet_type.species.id,
:state => self.pet_state.id,
:objects => self.items.map(&:id)
}.to_query
end
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def contributables
contributables = [pet_type, @pet_state]
items.each do |item|
contributables << item
contributables += item.pending_swf_assets
end
contributables
end
def item_translation_candidates
{}.tap do |candidates|
if @items
@items.each do |item|
item.needed_translations.each do |locale|
candidates[locale] ||= []
candidates[locale] << item
end
end
end
end
end
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def translate_items
candidates = self.item_translation_candidates
until candidates.empty?
# Organize known items by ID
items_by_id = {}
@items.each { |i| items_by_id[i.id] = i }
# Fetch registry data in parallel
registries = Parallel.map(candidates.keys, :in_threads => 8) do |locale|
viewer_data = I18n.with_locale(locale) { fetch_viewer_data }
[locale, viewer_data[:object_info_registry]]
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end
# Look up any newly applied items on this pet, just in case
new_item_ids = []
registries.each do |locale, registry|
registry.each do |item_id, item_info|
item_id = item_id.to_i
new_item_ids << item_id unless items_by_id.has_key?(item_id)
end
end
Item.includes(:translations).find(new_item_ids).each do |item|
items_by_id[item.id] = item
end
# Apply translations, and figure out what items are currently being worn
current_items = Set.new
registries.each do |locale, registry|
I18n.with_locale(locale) do
registry.each do |item_id, item_info|
item = items_by_id[item_id.to_i]
item.origin_registry_info = item_info
current_items << item
end
end
end
@items = current_items
Item.transaction { @items.each { |i| i.save! if i.changed? } }
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previous_candidates = candidates
candidates = item_translation_candidates
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if previous_candidates == candidates
# This condition should never happen if Neopets responds with correct
# data, but, if Neopets somehow responds with incorrect data, this
# condition could throw us into an infinite loop if uncaught. Better
# safe than sorry when working with external services.
raise "No change when reloading #{name} for #{candidates}"
end
end
end
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before_validation do
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pet_type.save!
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if @pet_state
@pet_state.save!
@pet_state.handle_assets!
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end
if @items
@items.each do |item|
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item.save! if item.changed?
item.handle_assets!
end
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end
end
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def self.load(name, options={})
pet = Pet.find_or_initialize_by_name(name)
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pet.load!(options)
pet
end
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def self.from_viewer_data(viewer_data, options={})
pet = Pet.find_or_initialize_by_name(viewer_data[:custom_pet][:name])
pet.use_viewer_data(viewer_data, options)
pet
end
class PetNotFound < Exception;end
class DownloadError < Exception;end
end