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# frozen_string_literal: true
module Banzai
module Filter
module References
# HTML filter that replaces milestone references with links.
class MilestoneReferenceFilter < AbstractReferenceFilter
include Gitlab::Utils::StrongMemoize
self.reference_type = :milestone
def self.object_class
Milestone
end
# Links to project milestones contain the IID, but when we're handling
# 'regular' references, we need to use the global ID to disambiguate
# between group and project milestones.
def find_object(parent, id)
return unless valid_context?(parent)
find_milestone_with_finder(parent, id: id)
end
def find_object_from_link(parent, iid)
return unless valid_context?(parent)
find_milestone_with_finder(parent, iid: iid)
end
def valid_context?(parent)
strong_memoize(:valid_context) do
group_context?(parent) || project_context?(parent)
end
end
def group_context?(parent)
strong_memoize(:group_context) do
parent.is_a?(Group)
end
end
def project_context?(parent)
strong_memoize(:project_context) do
parent.is_a?(Project)
end
end
def references_in(text, pattern = Milestone.reference_pattern)
# We'll handle here the references that follow the `reference_pattern`.
# Other patterns (for example, the link pattern) are handled by the
# default implementation.
return super(text, pattern) if pattern != Milestone.reference_pattern
milestones = {}
unescaped_html = unescape_html_entities(text).gsub(pattern) do |match|
milestone = find_milestone($~[:project], $~[:namespace], $~[:milestone_iid], $~[:milestone_name])
if milestone
milestones[milestone.id] = yield match, milestone.id, $~[:project], $~[:namespace], $~
"#{REFERENCE_PLACEHOLDER}#{milestone.id}"
else
match
end
end
return text if milestones.empty?
escape_with_placeholders(unescaped_html, milestones)
end
def find_milestone(project_ref, namespace_ref, milestone_id, milestone_name)
project_path = full_project_path(namespace_ref, project_ref)
# Returns group if project is not found by path
parent = parent_from_ref(project_path)
return unless parent
milestone_params = milestone_params(milestone_id, milestone_name)
find_milestone_with_finder(parent, milestone_params)
end
def milestone_params(iid, name)
if name
{ name: name.tr('"', '') }
else
{ iid: iid.to_i }
end
end
def find_milestone_with_finder(parent, params)
finder_params = milestone_finder_params(parent, params[:iid].present?)
MilestonesFinder.new(finder_params).find_by(params)
end
def milestone_finder_params(parent, find_by_iid)
{ order: nil, state: 'all' }.tap do |params|
params[:project_ids] = parent.id if project_context?(parent)
# We don't support IID lookups because IIDs can clash between
# group/project milestones and group/subgroup milestones.
params[:group_ids] = self_and_ancestors_ids(parent) unless find_by_iid
end
end
def self_and_ancestors_ids(parent)
if group_context?(parent)
parent.self_and_ancestors.select(:id)
elsif project_context?(parent)
parent.group&.self_and_ancestors&.select(:id)
end
end
def url_for_object(milestone, project)
Gitlab::Routing
.url_helpers
.milestone_url(milestone, only_path: context[:only_path])
end
def object_link_text(object, matches)
milestone_link = escape_once(super)
reference = object.project&.to_reference_base(project)
if reference.present?
"#{milestone_link} <i>in #{reference}</i>".html_safe
else
milestone_link
end
end
def object_link_title(object, matches)
nil
end
end
end
end
end
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