mirror of
https://github.com/discourse/discourse.git
synced 2024-12-15 17:03:39 +08:00
22789e0201
Discourse needs a bunch of data preloaded before it can start up. Normally we throw blobs of this into the HTML document that is requested but in some cases that's awkward to retrieve. For example with Ember CLI you have a separate javascript application that needs to make its own HTML. This API endpoint returns a JSON object with all the data Discourse needs to bootstrap and start up.
526 lines
14 KiB
Ruby
526 lines
14 KiB
Ruby
# coding: utf-8
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# frozen_string_literal: true
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require 'current_user'
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require 'canonical_url'
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module ApplicationHelper
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include CurrentUser
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include CanonicalURL::Helpers
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include ConfigurableUrls
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include GlobalPath
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def self.extra_body_classes
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@extra_body_classes ||= Set.new
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end
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def google_universal_analytics_json(ua_domain_name = nil)
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result = {}
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if ua_domain_name
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result[:cookieDomain] = ua_domain_name.gsub(/^http(s)?:\/\//, '')
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end
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if current_user.present?
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result[:userId] = current_user.id
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end
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if SiteSetting.ga_universal_auto_link_domains.present?
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result[:allowLinker] = true
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end
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result.to_json
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end
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def ga_universal_json
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google_universal_analytics_json(SiteSetting.ga_universal_domain_name)
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end
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def google_tag_manager_json
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google_universal_analytics_json
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end
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def shared_session_key
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if SiteSetting.long_polling_base_url != '/' && current_user
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sk = "shared_session_key"
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return request.env[sk] if request.env[sk]
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request.env[sk] = key = (session[sk] ||= SecureRandom.hex)
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Discourse.redis.setex "#{sk}_#{key}", 7.days, current_user.id.to_s
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key
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end
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end
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def is_brotli_req?
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request.env["HTTP_ACCEPT_ENCODING"] =~ /br/
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end
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def is_gzip_req?
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request.env["HTTP_ACCEPT_ENCODING"] =~ /gzip/
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end
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def script_asset_path(script)
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path = asset_path("#{script}.js")
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if GlobalSetting.use_s3? && GlobalSetting.s3_cdn_url
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if GlobalSetting.cdn_url
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folder = ActionController::Base.config.relative_url_root || "/"
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path = path.gsub(File.join(GlobalSetting.cdn_url, folder, "/"), File.join(GlobalSetting.s3_cdn_url, "/"))
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else
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# we must remove the subfolder path here, assets are uploaded to s3
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# without it getting involved
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if ActionController::Base.config.relative_url_root
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path = path.sub(ActionController::Base.config.relative_url_root, "")
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end
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path = "#{GlobalSetting.s3_cdn_url}#{path}"
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end
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if is_brotli_req?
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path = path.gsub(/\.([^.]+)$/, '.br.\1')
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elsif is_gzip_req?
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path = path.gsub(/\.([^.]+)$/, '.gz.\1')
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end
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elsif GlobalSetting.cdn_url&.start_with?("https") && is_brotli_req?
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path = path.gsub("#{GlobalSetting.cdn_url}/assets/", "#{GlobalSetting.cdn_url}/brotli_asset/")
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end
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if Rails.env == "development"
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if !path.include?("?")
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# cache breaker for mobile iOS
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path = path + "?#{Time.now.to_f}"
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end
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end
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path
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end
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def preload_script(script)
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path = script_asset_path(script)
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preload_script_url(path)
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end
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def preload_script_url(url)
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<<~HTML.html_safe
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<link rel="preload" href="#{url}" as="script">
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<script src="#{url}"></script>
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HTML
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end
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def discourse_csrf_tags
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# anon can not have a CSRF token cause these are all pages
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# that may be cached, causing a mismatch between session CSRF
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# and CSRF on page and horrible impossible to debug login issues
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if current_user
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csrf_meta_tags
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end
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end
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def html_classes
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list = []
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list << (mobile_view? ? 'mobile-view' : 'desktop-view')
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list << (mobile_device? ? 'mobile-device' : 'not-mobile-device')
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list << 'ios-device' if ios_device?
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list << 'rtl' if rtl?
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list << text_size_class
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list << 'anon' unless current_user
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list.join(' ')
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end
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def body_classes
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result = ApplicationHelper.extra_body_classes.to_a
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if @category && @category.url.present?
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result << "category-#{@category.url.sub(/^\/c\//, '').gsub(/\//, '-')}"
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end
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if current_user.present? &&
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current_user.primary_group_id &&
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primary_group_name = Group.where(id: current_user.primary_group_id).pluck_first(:name)
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result << "primary-group-#{primary_group_name.downcase}"
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end
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result.join(' ')
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end
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def text_size_class
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requested_cookie_size, cookie_seq = cookies[:text_size]&.split("|")
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server_seq = current_user&.user_option&.text_size_seq
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if cookie_seq && server_seq && cookie_seq.to_i >= server_seq &&
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UserOption.text_sizes.keys.include?(requested_cookie_size&.to_sym)
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cookie_size = requested_cookie_size
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end
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size = cookie_size || current_user&.user_option&.text_size || SiteSetting.default_text_size
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"text-size-#{size}"
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end
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def escape_unicode(javascript)
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if javascript
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javascript = javascript.scrub
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javascript.gsub!(/\342\200\250/u, '
')
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javascript.gsub!(/(<\/)/u, '\u003C/')
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javascript
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else
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''
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end
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end
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def format_topic_title(title)
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PrettyText.unescape_emoji strip_tags(title)
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end
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def with_format(format, &block)
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old_formats = formats
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self.formats = [format]
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block.call
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self.formats = old_formats
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nil
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end
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def age_words(secs)
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AgeWords.age_words(secs)
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end
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def short_date(dt)
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if dt.year == Time.now.year
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I18n.l(dt, format: :short_no_year)
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else
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I18n.l(dt, format: :date_only)
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end
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end
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def guardian
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@guardian ||= Guardian.new(current_user)
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end
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def admin?
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current_user.try(:admin?)
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end
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def moderator?
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current_user.try(:moderator?)
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end
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def staff?
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current_user.try(:staff?)
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end
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def rtl?
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["ar", "ur", "fa_IR", "he"].include? I18n.locale.to_s
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end
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def html_lang
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SiteSetting.default_locale.sub("_", "-")
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end
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# Creates open graph and twitter card meta data
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def crawlable_meta_data(opts = nil)
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opts ||= {}
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opts[:url] ||= "#{Discourse.base_url_no_prefix}#{request.fullpath}"
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if opts[:image].blank?
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twitter_summary_large_image_url = SiteSetting.site_twitter_summary_large_image_url
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if twitter_summary_large_image_url.present?
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opts[:twitter_summary_large_image] = twitter_summary_large_image_url
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end
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opts[:image] = SiteSetting.site_opengraph_image_url
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end
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# Use the correct scheme for opengraph/twitter image
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opts[:image] = get_absolute_image_url(opts[:image]) if opts[:image].present?
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opts[:twitter_summary_large_image] =
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get_absolute_image_url(opts[:twitter_summary_large_image]) if opts[:twitter_summary_large_image].present?
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# Add opengraph & twitter tags
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result = []
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result << tag(:meta, property: 'og:site_name', content: SiteSetting.title)
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if opts[:twitter_summary_large_image].present?
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result << tag(:meta, name: 'twitter:card', content: "summary_large_image")
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result << tag(:meta, name: "twitter:image", content: opts[:twitter_summary_large_image])
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elsif opts[:image].present?
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result << tag(:meta, name: 'twitter:card', content: "summary")
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result << tag(:meta, name: "twitter:image", content: opts[:image])
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else
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result << tag(:meta, name: 'twitter:card', content: "summary")
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end
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result << tag(:meta, property: "og:image", content: opts[:image]) if opts[:image].present?
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[:url, :title, :description].each do |property|
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if opts[property].present?
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content = (property == :url ? opts[property] : gsub_emoji_to_unicode(opts[property]))
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result << tag(:meta, { property: "og:#{property}", content: content }, nil, true)
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result << tag(:meta, { name: "twitter:#{property}", content: content }, nil, true)
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end
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end
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if opts[:read_time] && opts[:read_time] > 0 && opts[:like_count] && opts[:like_count] > 0
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result << tag(:meta, name: 'twitter:label1', value: I18n.t("reading_time"))
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result << tag(:meta, name: 'twitter:data1', value: "#{opts[:read_time]} mins 🕑")
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result << tag(:meta, name: 'twitter:label2', value: I18n.t("likes"))
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result << tag(:meta, name: 'twitter:data2', value: "#{opts[:like_count]} ❤")
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end
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if opts[:published_time]
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result << tag(:meta, property: 'article:published_time', content: opts[:published_time])
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end
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if opts[:ignore_canonical]
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result << tag(:meta, property: 'og:ignore_canonical', content: true)
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end
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result.join("\n")
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end
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def render_sitelinks_search_tag
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json = {
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'@context' => 'http://schema.org',
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'@type' => 'WebSite',
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url: Discourse.base_url,
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potentialAction: {
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'@type' => 'SearchAction',
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target: "#{Discourse.base_url}/search?q={search_term_string}",
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'query-input' => 'required name=search_term_string',
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}
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}
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content_tag(:script, MultiJson.dump(json).html_safe, type: 'application/ld+json')
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end
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def gsub_emoji_to_unicode(str)
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Emoji.gsub_emoji_to_unicode(str)
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end
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def application_logo_url
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@application_logo_url ||= begin
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if mobile_view? && SiteSetting.site_mobile_logo_url.present?
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SiteSetting.site_mobile_logo_url
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else
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SiteSetting.site_logo_url
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end
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end
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end
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def login_path
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"#{Discourse::base_uri}/login"
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end
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def mobile_view?
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MobileDetection.resolve_mobile_view!(request.user_agent, params, session)
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end
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def crawler_layout?
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controller&.use_crawler_layout?
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end
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def include_crawler_content?
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crawler_layout? || !mobile_view?
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end
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def mobile_device?
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MobileDetection.mobile_device?(request.user_agent)
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end
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def ios_device?
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MobileDetection.ios_device?(request.user_agent)
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end
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def customization_disabled?
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request.env[ApplicationController::NO_CUSTOM]
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end
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def include_ios_native_app_banner?
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current_user && current_user.trust_level >= 1 && SiteSetting.native_app_install_banner_ios
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end
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def ios_app_argument
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# argument only makes sense for DiscourseHub app
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SiteSetting.ios_app_id == "1173672076" ?
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", app-argument=discourse://new?siteUrl=#{Discourse.base_url}" : ""
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end
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def allow_plugins?
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!request.env[ApplicationController::NO_PLUGINS]
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end
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def allow_third_party_plugins?
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allow_plugins? && !request.env[ApplicationController::ONLY_OFFICIAL]
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end
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def normalized_safe_mode
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safe_mode = []
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safe_mode << ApplicationController::NO_CUSTOM if customization_disabled?
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safe_mode << ApplicationController::NO_PLUGINS if !allow_plugins?
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safe_mode << ApplicationController::ONLY_OFFICIAL if !allow_third_party_plugins?
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safe_mode.join(",")
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end
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def loading_admin?
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return false unless defined?(controller)
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controller.class.name.split("::").first == "Admin"
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end
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def category_badge(category, opts = nil)
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CategoryBadge.html_for(category, opts).html_safe
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end
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def self.all_connectors
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@all_connectors = Dir.glob("plugins/*/app/views/connectors/**/*.html.erb")
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end
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def server_plugin_outlet(name)
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# Don't evaluate plugins in test
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return "" if Rails.env.test?
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matcher = Regexp.new("/connectors/#{name}/.*\.html\.erb$")
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erbs = ApplicationHelper.all_connectors.select { |c| c =~ matcher }
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return "" if erbs.blank?
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result = +""
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erbs.each { |erb| result << render(inline: File.read(erb)) }
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result.html_safe
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end
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def topic_featured_link_domain(link)
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begin
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uri = UrlHelper.encode_and_parse(link)
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uri = URI.parse("http://#{uri}") if uri.scheme.nil?
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host = uri.host.downcase
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host.start_with?('www.') ? host[4..-1] : host
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rescue
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''
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end
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end
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def theme_ids
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if customization_disabled?
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[nil]
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else
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request.env[:resolved_theme_ids]
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end
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end
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def scheme_id
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return if theme_ids.blank?
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Theme
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.where(id: theme_ids.first)
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.pluck(:color_scheme_id)
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.first
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end
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def current_homepage
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current_user&.user_option&.homepage || SiteSetting.anonymous_homepage
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end
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def build_plugin_html(name)
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return "" unless allow_plugins?
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DiscoursePluginRegistry.build_html(name, controller) || ""
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end
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# If there is plugin HTML return that, otherwise yield to the template
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def replace_plugin_html(name)
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if (html = build_plugin_html(name)).present?
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html
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else
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yield
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nil
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end
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end
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def theme_lookup(name)
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Theme.lookup_field(theme_ids, mobile_view? ? :mobile : :desktop, name)
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end
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def theme_translations_lookup
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Theme.lookup_field(theme_ids, :translations, I18n.locale)
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end
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def theme_js_lookup
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Theme.lookup_field(theme_ids, :extra_js, nil)
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end
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def discourse_stylesheet_link_tag(name, opts = {})
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if opts.key?(:theme_ids)
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ids = opts[:theme_ids] unless customization_disabled?
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else
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ids = theme_ids
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end
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Stylesheet::Manager.stylesheet_link_tag(name, 'all', ids)
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end
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def preloaded_json
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return '{}' if @preloaded.blank?
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@preloaded.transform_values { |value| escape_unicode(value) }.to_json
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end
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def client_side_setup_data
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service_worker_url = Rails.env.development? ? 'service-worker.js' : Rails.application.assets_manifest.assets['service-worker.js']
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setup_data = {
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cdn: Rails.configuration.action_controller.asset_host,
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base_url: Discourse.base_url,
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base_uri: Discourse::base_uri,
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environment: Rails.env,
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letter_avatar_version: LetterAvatar.version,
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markdown_it_url: script_asset_path('markdown-it-bundle'),
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service_worker_url: service_worker_url,
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default_locale: SiteSetting.default_locale,
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asset_version: Discourse.assets_digest,
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disable_custom_css: loading_admin?,
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highlight_js_path: HighlightJs.path,
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svg_sprite_path: SvgSprite.path(theme_ids),
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enable_js_error_reporting: GlobalSetting.enable_js_error_reporting,
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}
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if Rails.env.development?
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setup_data[:svg_icon_list] = SvgSprite.all_icons(theme_ids)
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if ENV['DEBUG_PRELOADED_APP_DATA']
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setup_data[:debug_preloaded_app_data] = true
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end
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end
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if guardian.can_enable_safe_mode? && params["safe_mode"]
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setup_data[:safe_mode] = normalized_safe_mode
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end
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if SiteSetting.Upload.enable_s3_uploads
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setup_data[:s3_cdn] = SiteSetting.Upload.s3_cdn_url.presence
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setup_data[:s3_base_url] = SiteSetting.Upload.s3_base_url
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end
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setup_data
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end
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def get_absolute_image_url(link)
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absolute_url = link
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if link.start_with?('//')
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uri = URI(Discourse.base_url)
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absolute_url = "#{uri.scheme}:#{link}"
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elsif link.start_with?('/uploads/', '/images/', '/user_avatar/')
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absolute_url = "#{Discourse.base_url}#{link}"
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elsif GlobalSetting.relative_url_root && link.start_with?(GlobalSetting.relative_url_root)
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absolute_url = "#{Discourse.base_url_no_prefix}#{link}"
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end
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absolute_url
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end
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def can_sign_up?
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SiteSetting.allow_new_registrations &&
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!SiteSetting.invite_only &&
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!SiteSetting.enable_sso
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end
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def rss_creator(user)
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if user
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if SiteSetting.prioritize_username_in_ux
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"#{user.username}"
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else
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"#{user.name.presence || user.username }"
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end
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end
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end
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end
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