66 lines
1.8 KiB
Ruby
66 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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#
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# Copyright (C) 2016 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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require "addressable/uri"
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module MathMan
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class InvalidConfigurationError < StandardError; end
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def self.url_for(latex:, target:, scale: '')
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scale_param = "&scale=#{scale}" if scale.present?
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uri = base_url.join(target.to_s)
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uri.query = "tex=#{latex}#{scale_param}"
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uri.to_s
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end
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def self.cache_key_for(latex, target)
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["mathman", dynamic_settings.fetch('version'), Digest::MD5.hexdigest(latex), target].compact.cache_key
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end
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def self.use_for_mml?
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Canvas::Plugin.value_to_boolean(plugin_settings[:use_for_mml])
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end
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def self.use_for_svg?
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Canvas::Plugin.value_to_boolean(plugin_settings[:use_for_svg])
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end
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class << self
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private
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def base_url
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url = dynamic_settings[:base_url]
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# if we get here, we should have already checked one of the booleans above
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raise InvalidConfigurationError unless url
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Addressable::URI.parse(url).tap do |uri|
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uri.path << '/' unless uri.path.end_with?('/')
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end
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end
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def plugin_settings
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Canvas::Plugin.find(:mathman).settings
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end
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def dynamic_settings
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Canvas::DynamicSettings.find('math-man')
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end
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end
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end
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