module GraphQL::StaticValidation::ArgumentNamesAreUnique

# File lib/graphql/static_validation/rules/argument_names_are_unique.rb, line 15
def on_directive(node, parent)
  validate_arguments(node)
  super
end

# File lib/graphql/static_validation/rules/argument_names_are_unique.rb, line 10
def on_field(node, parent)
  validate_arguments(node)
  super
end

# File lib/graphql/static_validation/rules/argument_names_are_unique.rb, line 20
def validate_arguments(node)
  argument_defns = node.arguments
  if argument_defns.size > 1
    seen = {}
    argument_defns.each do |a|
      name = a.name
      if seen.key?(name)
        prev = seen[name]
        if prev.is_a?(Array)
          prev << a
        else
          seen[name] = [prev, a]
        end
      else
        seen[name] = a
      end
    end
    seen.each do |name, val|
      if val.is_a?(Array)
        add_error(GraphQL::StaticValidation::ArgumentNamesAreUniqueError.new("There can be only one argument named \"#{name}\"", nodes: val, name: name))
      end
    end
  end
end