import gleam/dynamic/decode.{type Decoder}
import gleam/option.{type Option}
import models/module_symbol.{type ModuleSymbol}
import models/ship_requirements.{type ShipRequirements}

pub type ShipModule {
  ShipModule(
    symbol: ModuleSymbol,
    name: String,
    description: String,
    capacity: Option(Int),
    range: Option(Int),
    requirements: ShipRequirements,
  )
}

pub fn decoder() -> Decoder(ShipModule) {
  use symbol <- decode.field("symbol", module_symbol.decoder())
  use name <- decode.field("name", decode.string)
  use description <- decode.field("description", decode.string)
  use capacity <- decode.optional_field(
    "capacity",
    option.None,
    decode.optional(decode.int),
  )
  use range <- decode.optional_field(
    "range",
    option.None,
    decode.optional(decode.int),
  )
  use requirements <- decode.field("requirements", ship_requirements.decoder())
  decode.success(ShipModule(
    symbol:,
    name:,
    description:,
    capacity:,
    range:,
    requirements:,
  ))
}