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# frozen_string_literal: true
# Cleanup GraphQL original response hash from unnecessary nesting
# 1. Remove ['data']['group'] or ['data']['project'] hash nesting
# 2. Remove ['edges'] & ['nodes'] array wrappings
# 3. Remove ['node'] hash wrapping
#
# @example
# data = {"data"=>{"group"=> {
# "name"=>"test",
# "fullName"=>"test",
# "description"=>"test",
# "labels"=>{"edges"=>[{"node"=>{"title"=>"label1"}}, {"node"=>{"title"=>"label2"}}, {"node"=>{"title"=>"label3"}}]}}}}
#
# BulkImports::Common::Transformers::GraphqlCleanerTransformer.new.transform(nil, data)
#
# {"name"=>"test", "fullName"=>"test", "description"=>"test", "labels"=>[{"title"=>"label1"}, {"title"=>"label2"}, {"title"=>"label3"}]}
module BulkImports
module Common
module Transformers
class GraphqlCleanerTransformer
EDGES = 'edges'
NODE = 'node'
def initialize(options = {})
@options = options
end
def transform(_, data)
return data unless data.is_a?(Hash)
data = data.dig('data', 'group') || data.dig('data', 'project') || data
clean_edges_and_nodes(data)
end
def clean_edges_and_nodes(data)
case data
when Array
data.map(&method(:clean_edges_and_nodes))
when Hash
if data.key?(NODE)
clean_edges_and_nodes(data[NODE])
else
data.transform_values { |value| clean_edges_and_nodes(value.try(:fetch, EDGES, value) || value) }
end
else
data
end
end
end
end
end
end
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