import gleam/dynamic/decode.{type Decoder}
import gleam/option.{type Option}
import spacetraders_sdk/models/ship_fuel_consumed.{type ShipFuelConsumed}

pub type ShipFuel {
  ShipFuel(current: Int, capacity: Int, consumed: Option(ShipFuelConsumed))
}

pub fn decoder() -> Decoder(ShipFuel) {
  use current <- decode.field("current", decode.int)
  use capacity <- decode.field("capacity", decode.int)
  use consumed <- decode.optional_field(
    "consumed",
    option.None,
    decode.optional(ship_fuel_consumed.decoder()),
  )
  decode.success(ShipFuel(current:, capacity:, consumed:))
}