defmodule Microwaveprop.Commercial do
  @moduledoc false

  import Ecto.Query

  alias Microwaveprop.Commercial.Link
  alias Microwaveprop.Commercial.Sample
  alias Microwaveprop.Repo

  @spec enabled_links() :: [Link.t()]
  def enabled_links do
    Link
    |> where([l], l.enabled == true)
    |> Repo.all()
  end

  @spec create_link(map()) :: {:ok, Link.t()} | {:error, Ecto.Changeset.t()}
  def create_link(attrs) do
    %Link{}
    |> Link.changeset(attrs)
    |> Repo.insert()
  end

  @spec create_sample(map()) :: {:ok, Sample.t()} | {:error, Ecto.Changeset.t()}
  def create_sample(attrs) do
    %Sample{}
    |> Sample.changeset(attrs)
    |> Repo.insert()
  end

  @spec weather_stations() :: [String.t()]
  def weather_stations do
    Link
    |> where([l], l.enabled == true and not is_nil(l.weather_station))
    |> select([l], l.weather_station)
    |> distinct(true)
    |> Repo.all()
  end
end