defmodule Polymarket.Schemas.ClobReward do
  @moduledoc """
  A CLOB liquidity-reward configuration attached to a `Polymarket.Schemas.Market`.

  Returned (as `clobRewards`) by the single-event Gamma endpoints
  (`GET /events/:id`, `/events/slug/:slug`); the keyset endpoint omits it.
  """

  use TypedEctoSchema

  alias Polymarket.JsonUtil
  alias Polymarket.Schemas.Coerce

  @primary_key false

  @derive Jason.Encoder
  typed_embedded_schema do
    field(:id, :string)
    field(:condition_id, :string)
    field(:asset_address, :string)
    field(:rewards_amount, :float)
    field(:rewards_daily_rate, :float)
    field(:start_date, :date)
    field(:end_date, :date)
  end

  @doc "Builds a `ClobReward` from a decoded (JSON) map, coercing each field."
  @spec from_attrs(map()) :: {:ok, t()}
  def from_attrs(attrs) do
    attrs = JsonUtil.snake_case_keys(attrs)

    {:ok,
     %__MODULE__{
       id: attrs["id"],
       condition_id: attrs["condition_id"],
       asset_address: attrs["asset_address"],
       rewards_amount: Coerce.to_float(attrs["rewards_amount"]),
       rewards_daily_rate: Coerce.to_float(attrs["rewards_daily_rate"]),
       start_date: Coerce.to_date(attrs["start_date"]),
       end_date: Coerce.to_date(attrs["end_date"])
     }}
  end
end