float.rb

# frozen_string_literal: true

module GraphQL
  module Types
    class Float < GraphQL::Schema::Scalar
      description "Represents signed double-precision fractional values as specified by [IEEE 754](https://en.wikipedia.org/wiki/IEEE_floating_point)."

      def self.coerce_input(value, _ctx)
        value.is_a?(Numeric) ? value.to_f : nil
      end

      def self.coerce_result(value, ctx)
        coerced_value = Float(value, exception: false)

        if coerced_value.nil? || !coerced_value.finite?
          error = GraphQL::ScalarCoercionError.new(
            "Float cannot represent non numeric value: #{value.inspect}",
            value: value,
            context: ctx
          )
          ctx.schema.type_error(error, ctx)
        else
          coerced_value
        end
      end

      default_scalar true
    end
  end
end