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# frozen_string_literal: true
module Banzai
module Filter
# HTML filter that replaces merge request references with links. References
# to merge requests that do not exist are ignored.
#
# This filter supports cross-project references.
class MergeRequestReferenceFilter < IssuableReferenceFilter
self.reference_type = :merge_request
def self.object_class
MergeRequest
end
def url_for_object(mr, project)
h = Gitlab::Routing.url_helpers
h.project_merge_request_url(project, mr,
only_path: context[:only_path])
end
def object_link_title(object, matches)
object_link_commit_title(object, matches) || super
end
def object_link_text_extras(object, matches)
extras = super
if commit_ref = object_link_commit_ref(object, matches)
klass = reference_class(:commit, tooltip: false)
commit_ref_tag = %(<span class="#{klass}">#{commit_ref}</span>)
return extras.unshift(commit_ref_tag)
end
path = matches[:path] if matches.names.include?("path")
case path
when '/diffs'
extras.unshift "diffs"
when '/commits'
extras.unshift "commits"
when '/builds'
extras.unshift "builds"
end
extras
end
def parent_records(parent, ids)
parent.merge_requests
.where(iid: ids.to_a)
.includes(target_project: :namespace)
end
private
def object_link_commit_title(object, matches)
object_link_commit(object, matches)&.title
end
def object_link_commit_ref(object, matches)
object_link_commit(object, matches)&.short_id
end
def object_link_commit(object, matches)
return unless matches.names.include?('query') && query = matches[:query]
# Removes leading "?". CGI.parse expects "arg1&arg2&arg3"
params = CGI.parse(query.sub(/^\?/, ''))
return unless commit_sha = params['commit_id']&.first
if commit = find_commit_by_sha(object, commit_sha)
Commit.from_hash(commit.to_hash, object.project)
end
end
def find_commit_by_sha(object, commit_sha)
@all_commits ||= {}
@all_commits[object.id] ||= object.all_commits
@all_commits[object.id].find { |commit| commit.sha == commit_sha }
end
end
end
end
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