defmodule Nulla.Announces do
  @moduledoc """
  The Announces context.
  """

  import Ecto.Query, warn: false
  alias Nulla.Repo

  alias Nulla.Announces.Announce

  @doc """
  Returns the list of announces.

  ## Examples

      iex> list_announces()
      [%Announce{}, ...]

  """
  def list_announces do
    Repo.all(Announce)
  end

  def list_announces_by(by) when is_map(by) or is_list(by) do
    Announce
    |> where(^by)
    |> Repo.all()
  end

  @doc """
  Gets a single announce.

  Raises `Ecto.NoResultsError` if the Announce does not exist.

  ## Examples

      iex> get_announce!(123)
      %Announce{}

      iex> get_announce!(456)
      ** (Ecto.NoResultsError)

  """
  def get_announce!(id), do: Repo.get!(Announce, id)

  @doc """
  Creates a announce.

  ## Examples

      iex> create_announce(%{field: value})
      {:ok, %Announce{}}

      iex> create_announce(%{field: bad_value})
      {:error, %Ecto.Changeset{}}

  """
  def create_announce(attrs \\ %{}) do
    %Announce{}
    |> Announce.changeset(attrs)
    |> Repo.insert()
  end

  @doc """
  Updates a announce.

  ## Examples

      iex> update_announce(announce, %{field: new_value})
      {:ok, %Announce{}}

      iex> update_announce(announce, %{field: bad_value})
      {:error, %Ecto.Changeset{}}

  """
  def update_announce(%Announce{} = announce, attrs) do
    announce
    |> Announce.changeset(attrs)
    |> Repo.update()
  end

  @doc """
  Deletes a announce.

  ## Examples

      iex> delete_announce(announce)
      {:ok, %Announce{}}

      iex> delete_announce(announce)
      {:error, %Ecto.Changeset{}}

  """
  def delete_announce(%Announce{} = announce) do
    Repo.delete(announce)
  end

  @doc """
  Returns an `%Ecto.Changeset{}` for tracking announce changes.

  ## Examples

      iex> change_announce(announce)
      %Ecto.Changeset{data: %Announce{}}

  """
  def change_announce(%Announce{} = announce, attrs \\ %{}) do
    Announce.changeset(announce, attrs)
  end
end