333 lines
10 KiB
Ruby
333 lines
10 KiB
Ruby
# encoding=utf-8
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# ^ to put the regex in utf-8 mode
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class Item
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module Search
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class Query
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def initialize(filters, user, text=nil)
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@filters = filters
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@user = user
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@text = text
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end
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def results
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@filters.map(&:to_query).inject(Item.all, &:merge).order(:name)
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end
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def to_s
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@text || @filters.map(&:to_s).join(' ')
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end
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TEXT_FILTER_EXPR = /([+-]?)(?:(\p{Word}+):)?(?:"([^"]+)"|(\S+))/
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def self.from_text(text, user=nil)
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filters = []
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text.scan(TEXT_FILTER_EXPR) do |sign, key, quoted_value, unquoted_value|
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key = 'name' if key.blank?
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value = quoted_value || unquoted_value
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is_positive = (sign != '-')
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filter = parse_text_filter(key, value, is_positive, user)
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filters << filter if filter.present?
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end
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self.new(filters, user, text)
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end
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def self.from_params(params, user=nil)
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filters = []
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params.values.each do |filter_params|
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key = filter_params[:key]
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value = filter_params[:value]
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is_positive = filter_params[:is_positive] != 'false'
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filter = parse_params_filter(key, value, is_positive, user)
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filters << filter if filter.present?
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end
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self.new(filters, user)
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end
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private
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def self.parse_text_filter(key, value, is_positive, user)
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case key
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when 'name'
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is_positive ?
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Filter.name_includes(value) :
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Filter.name_excludes(value)
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when 'occupies'
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is_positive ? Filter.occupies(value) : Filter.not_occupies(value)
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when 'restricts'
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is_positive ? Filter.restricts(value) : Filter.not_restricts(value)
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when 'fits'
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match = value.match(/^([^-]+)-([^-]+)$/)
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if match.present?
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color_name, species_name = match.captures
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pet_type = load_pet_type_by_name(color_name, species_name)
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return is_positive ?
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Filter.fits_pet_type(pet_type, color_name:, species_name:) :
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Filter.not_fits_pet_type(pet_type, color_name:, species_name:)
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end
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raise_search_error "not_found.fits_target", value: value
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when 'species'
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begin
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species = Species.find_by_name!(value)
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color = Color.find_by_name!('blue')
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pet_type = PetType.where(color_id: color.id, species_id: species.id).first!
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rescue ActiveRecord::RecordNotFound
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raise_search_error "not_found.species",
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species_name: value.capitalize
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end
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is_positive ?
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Filter.fits_species(pet_type.body_id, value) :
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Filter.not_fits_species(pet_type.body_id, value)
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when 'user'
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if user.nil?
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raise_search_error "not_logged_in"
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end
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case value
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when 'owns'
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is_positive ? Filter.owned_by(user) : Filter.not_owned_by(user)
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when 'wants'
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is_positive ? Filter.wanted_by(user) : Filter.not_wanted_by(user)
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else
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raise_search_error "not_found.ownership", keyword: value
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end
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when 'is'
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case value
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when 'nc'
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is_positive ? Filter.is_nc : Filter.is_not_nc
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when 'np'
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is_positive ? Filter.is_np : Filter.is_not_np
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when 'pb'
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is_positive ? Filter.is_pb : Filter.is_not_pb
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else
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raise_search_error "not_found.label", label: "is:#{value}"
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end
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else
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raise_search_error "not_found.label", label: key
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end
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end
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def self.parse_params_filter(key, value, is_positive, user)
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case key
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when 'name'
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is_positive ?
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Filter.name_includes(value) :
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Filter.name_excludes(value)
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when 'is_nc'
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is_positive ? Filter.is_nc : Filter.is_not_nc
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when 'is_pb'
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is_positive ? Filter.is_pb : Filter.is_not_pb
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when 'is_np'
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is_positive ? Filter.is_np : Filter.is_not_np
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when 'occupied_zone_set_name'
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is_positive ? Filter.occupies(value) : Filter.not_occupies(value)
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when 'restricted_zone_set_name'
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is_positive ? Filter.restricts(value) : Filter.not_restricts(value)
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when 'fits'
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if value[:alt_style_id].present?
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alt_style = load_alt_style_by_id(value[:alt_style_id])
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is_positive ?
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Filter.fits_alt_style(alt_style) :
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Filter.fits_alt_style(alt_style)
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else
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pet_type = load_pet_type_by_color_and_species(
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value[:color_id], value[:species_id])
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is_positive ?
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Filter.fits_pet_type(pet_type) :
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Filter.not_fits_pet_type(pet_type)
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end
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when 'user_closet_hanger_ownership'
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case value
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when 'true'
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is_positive ?
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Filter.owned_by(user) :
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Filter.not_owned_by(user)
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when 'false'
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is_positive ?
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Filter.wanted_by(user) :
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Filter.not_wanted_by(user)
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end
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else
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Rails.logger.warn "Ignoring unexpected search filter key: #{key}"
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end
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end
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def self.load_pet_type_by_name(color_name, species_name)
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begin
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PetType.matching_name(color_name, species_name).first!
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rescue ActiveRecord::RecordNotFound
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raise_search_error "not_found.pet_type",
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name1: color_name.capitalize, name2: species_name.capitalize
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end
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end
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def self.load_pet_type_by_color_and_species(color_id, species_id)
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begin
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PetType.where(color_id: color_id, species_id: species_id).first!
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rescue ActiveRecord::RecordNotFound
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color_name = Color.find(color_id).name rescue "Color #{color_id}"
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species_name = Species.find(species_id).name rescue "Species #{species_id}"
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raise_search_error "not_found.pet_type",
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name1: color_name.capitalize, name2: species_name.capitalize
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end
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end
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def self.load_alt_style_by_id(alt_style_id)
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begin
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AltStyle.find(alt_style_id)
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rescue
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raise_search_error "not_found.alt_style",
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filter_text: "alt-style-#{alt_style_id}"
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end
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end
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def self.raise_search_error(kind, ...)
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raise Item::Search::Error,
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I18n.translate("items.search.errors.#{kind}", ...)
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end
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end
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class Error < Exception
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end
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private
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# A Filter is basically a wrapper for an Item scope, with extra info about
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# how to convert it into a search query string.
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class Filter
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def initialize(query, text)
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@query = query
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@text = text
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end
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def to_query
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@query
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end
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def to_s
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@text
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end
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def inspect
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"#<#{self.class.name} #{@text.inspect}>"
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end
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def self.name_includes(value)
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self.new Item.name_includes(value), "#{q value}"
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end
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def self.name_excludes(value)
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self.new Item.name_excludes(value), "-#{q value}"
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end
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def self.occupies(value)
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self.new Item.occupies(value), "occupies:#{q value}"
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end
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def self.not_occupies(value)
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self.new Item.not_occupies(value), "-occupies:#{q value}"
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end
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def self.restricts(value)
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self.new Item.restricts(value), "restricts:#{q value}"
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end
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def self.not_restricts(value)
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self.new Item.not_restricts(value), "-restricts:#{q value}"
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end
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def self.fits_pet_type(pet_type, color_name: nil, species_name: nil)
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value = pet_type_to_filter_text(pet_type, color_name:, species_name:)
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self.new Item.fits(pet_type.body_id), "fits:#{q value}"
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end
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def self.not_fits_pet_type(pet_type, color_name: nil, species_name: nil)
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value = pet_type_to_filter_text(pet_type, color_name:, species_name:)
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self.new Item.not_fits(pet_type.body_id), "-fits:#{q value}"
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end
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def self.fits_alt_style(alt_style)
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value = alt_style_to_filter_text(alt_style)
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self.new Item.fits(alt_style.body_id), "fits:#{q value}"
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end
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def self.not_fits_alt_style(alt_style)
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value = alt_style_to_filter_text(alt_style)
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self.new Item.not_fits(alt_style.body_id), "-fits:#{q value}"
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end
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def self.fits_species(body_id, species_name)
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self.new Item.fits(body_id), "species:#{q species_name}"
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end
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def self.not_fits_species(body_id, species_name)
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self.new Item.not_fits(body_id), "-species:#{q species_name}"
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end
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def self.owned_by(user)
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self.new user.owned_items, 'user:owns'
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end
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def self.not_owned_by(user)
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self.new user.unowned_items, 'user:owns'
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end
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def self.wanted_by(user)
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self.new user.wanted_items, 'user:wants'
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end
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def self.not_wanted_by(user)
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self.new user.unwanted_items, 'user:wants'
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end
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def self.is_nc
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self.new Item.is_nc, 'is:nc'
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end
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def self.is_not_nc
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self.new Item.is_not_nc, '-is:nc'
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end
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def self.is_np
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self.new Item.is_np, 'is:np'
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end
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def self.is_not_np
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self.new Item.is_not_np, '-is:np'
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end
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def self.is_pb
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self.new Item.is_pb, 'is:pb'
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end
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def self.is_not_pb
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self.new Item.is_not_pb, '-is:pb'
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end
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private
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# Add quotes around the value, if needed.
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def self.q(value)
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/\s/.match(value) ? '"' + value + '"' : value
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end
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def self.pet_type_to_filter_text(pet_type, color_name: nil, species_name: nil)
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# Load the color & species name if needed, or use them from the params
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# if already known (e.g. from parsing a "fits:blue-acara" text query).
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color_name ||= pet_type.color.name
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species_name ||= pet_type.species.name
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# NOTE: Some color syntaxes are weird, like `fits:"polka dot-aisha"`!
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"#{color_name}-#{species_name}".downcase
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end
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def self.alt_style_to_filter_text(alt_style)
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"alt-style-#{alt_style.id}"
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end
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end
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end
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end
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