defmodule Microwaveprop.Propagation.GridScore do
  @moduledoc false
  use Ecto.Schema

  import Ecto.Changeset

  @primary_key {:id, :binary_id, autogenerate: true}

  schema "propagation_scores" do
    field :lat, :float
    field :lon, :float
    field :valid_time, :utc_datetime
    field :band_mhz, :integer
    field :score, :integer
    field :factors, :map

    timestamps(type: :utc_datetime)
  end

  @type t :: %__MODULE__{}

  @fields ~w(lat lon valid_time band_mhz score factors)a

  @spec changeset(t() | Ecto.Changeset.t(), map()) :: Ecto.Changeset.t()
  def changeset(grid_score, attrs) do
    grid_score
    |> cast(attrs, @fields)
    |> validate_required(@fields)
    |> unique_constraint([:lat, :lon, :valid_time, :band_mhz])
  end
end