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# frozen_string_literal: true
module Banzai
module Filter
# HTML filter that appends state information to issuable links.
# Runs as a post-process filter as issuable state might change whilst
# Markdown is in the cache.
#
# This filter supports cross-project references.
class IssuableStateFilter < HTML::Pipeline::Filter
VISIBLE_STATES = %w(closed merged).freeze
def call
return doc unless context[:issuable_state_filter_enabled]
context = RenderContext.new(project, current_user)
extractor = Banzai::IssuableExtractor.new(context)
issuables = extractor.extract([doc])
issuables.each do |node, issuable|
next if !can_read_cross_project? && cross_reference?(issuable)
if VISIBLE_STATES.include?(issuable.state) && issuable_reference?(node.inner_html, issuable)
node.content += " (#{issuable.state})"
end
end
doc
end
private
def issuable_reference?(text, issuable)
CGI.unescapeHTML(text) == issuable.reference_link_text(project || group)
end
def cross_reference?(issuable)
return true if issuable.project != project
return true if issuable.respond_to?(:group) && issuable.group != group
false
end
def can_read_cross_project?
Ability.allowed?(current_user, :read_cross_project)
end
def current_user
context[:current_user]
end
def project
context[:project]
end
def group
context[:group]
end
end
end
end
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