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impress/app/models/item.rb

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class Item < ActiveRecord::Base
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include SwfAssetParent
SwfAssetType = 'object'
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NCRarities = [0, 500]
PaintbrushSetDescription = 'This item is part of a deluxe paint brush set!'
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set_table_name 'objects' # Neo & PHP Impress call them objects, but the class name is a conflict (duh!)
set_inheritance_column 'inheritance_type' # PHP Impress used "type" to describe category
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cattr_reader :per_page
@@per_page = 30
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scope :alphabetize, order('name ASC')
scope :join_swf_assets, joins('INNER JOIN parents_swf_assets psa ON psa.swf_asset_type = "object" AND psa.parent_id = objects.id').
joins('INNER JOIN swf_assets ON swf_assets.id = psa.swf_asset_id').
group('objects.id')
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# Not defining validations, since this app is currently read-only
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def nc?
NCRarities.include?(rarity_index)
end
def restricted_zones
unless @restricted_zones
@restricted_zones = []
zones_restrict.split(//).each_with_index do |switch, id|
@restricted_zones << Zone.find(id.to_i + 1) if switch == '1'
end
end
@restricted_zones
end
def occupied_zones
all_body_ids = []
zone_body_ids = {}
selected_assets = swf_assets.select('body_id, zone_id').each do |swf_asset|
zone_body_ids[swf_asset.zone_id] ||= []
body_ids = zone_body_ids[swf_asset.zone_id]
body_ids << swf_asset.body_id unless body_ids.include?(swf_asset.body_id)
all_body_ids << swf_asset.body_id unless all_body_ids.include?(swf_asset.body_id)
end
zones = []
total_body_ids = all_body_ids.size
zone_body_ids.each do |zone_id, body_ids|
zone = Zone.find(zone_id)
zone.sometimes = true if body_ids.size < total_body_ids
zones << zone
end
zones
end
def species_support_ids
@species_support_ids_array ||= read_attribute('species_support_ids').split(',').map(&:to_i)
end
def species_support_ids=(replacement)
@species_support_ids_array = nil
replacement = replacement.join(',') if replacement.is_a?(Array)
write_attribute('species_support_ids', replacement)
end
def supported_species
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@supported_species ||= species_support_ids.empty? ? Species.all : species_support_ids.sort.map { |id| Species.find(id) }
end
def self.search(query)
raise ArgumentError, "Please provide a search query" unless query
query = query.strip
raise ArgumentError, "Search queries should be at least 3 characters" if query.length < 3
query_conditions = [Condition.new]
in_phrase = false
query.each_char do |c|
if c == ' ' && !in_phrase
query_conditions << Condition.new
elsif c == '"'
in_phrase = !in_phrase
elsif c == ':' && !in_phrase
query_conditions.last.to_filter!
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elsif c == '-' && !in_phrase && query_conditions.last.empty?
query_conditions.last.negate!
else
query_conditions.last << c
end
end
query_conditions.inject(self.scoped) do |scope, condition|
condition.narrow(scope)
end
end
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def as_json(options = {})
{
:description => description,
:id => id,
:name => name,
:thumbnail_url => thumbnail_url,
:zones_restrict => zones_restrict,
:rarity_index => rarity_index
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}
end
private
SearchFilterScopes = []
def self.search_filter(name, args={})
SearchFilterScopes << name.to_s
scope "search_filter_#{name}", lambda { |str, negative|
condition = yield(str)
condition = condition.not if negative
rel = where(condition)
rel = rel & args[:scope] if args[:scope]
rel
}
end
search_filter :name do |name|
arel_table[:name].matches("%#{name}%")
end
search_filter :description do |description|
arel_table[:description].matches("%#{description}%")
end
ADJECTIVE_FILTERS = {
'nc' => arel_table[:rarity_index].in(NCRarities),
'pb' => arel_table[:description].eq(PaintbrushSetDescription)
}
search_filter :is do |adjective|
filter = ADJECTIVE_FILTERS[adjective]
unless filter
raise ArgumentError,
"We don't know how an item can be \"#{adjective}\". " +
"Did you mean is:nc or is:pb?"
end
filter
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end
search_filter :only do |species_name|
id = Species.require_by_name(species_name).id
arel_table[:species_support_ids].eq(id.to_s)
end
search_filter :species do |species_name|
id = Species.require_by_name(species_name).id
ids = arel_table[:species_support_ids]
ids.eq('').or(ids.matches_any(
id,
"#{id},%",
"%,#{id},%",
"%,#{id}"
))
end
search_filter :type, {:scope => join_swf_assets} do |zone_set_name|
zone_set = Zone::ItemZoneSets[zone_set_name]
raise ArgumentError, "Type \"#{zone_set_name}\" does not exist" unless zone_set
SwfAsset.arel_table[:zone_id].in(zone_set.map(&:id))
end
class Condition < String
def to_filter!
@filter = self.clone
self.replace ''
end
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def negate!
@negative = true
end
def narrow(scope)
if SearchFilterScopes.include?(filter)
scope & Item.send("search_filter_#{filter}", self, @negative)
else
raise ArgumentError, "Filter #{filter} does not exist"
end
end
def filter
@filter || 'name'
end
def inspect
@filter ? "#{@filter}:#{super}" : super
end
end
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end