defmodule SimpleshopTheme.Media do
  @moduledoc """
  The Media context for managing images and file uploads.
  """

  import Ecto.Query, warn: false
  alias SimpleshopTheme.Repo
  alias SimpleshopTheme.Media.Image

  @doc """
  Uploads an image and stores it in the database.

  ## Examples

      iex> upload_image(%{image_type: "logo", filename: "logo.png", ...})
      {:ok, %Image{}}

  """
  def upload_image(attrs) do
    %Image{}
    |> Image.changeset(attrs)
    |> Repo.insert()
  end

  @doc """
  Gets a single image by ID.

  ## Examples

      iex> get_image(id)
      %Image{}

      iex> get_image("nonexistent")
      nil

  """
  def get_image(id) do
    Repo.get(Image, id)
  end

  @doc """
  Gets the current logo image.

  ## Examples

      iex> get_logo()
      %Image{}

  """
  def get_logo do
    Repo.one(from i in Image, where: i.image_type == "logo", order_by: [desc: i.inserted_at], limit: 1)
  end

  @doc """
  Gets the current header image.

  ## Examples

      iex> get_header()
      %Image{}

  """
  def get_header do
    Repo.one(from i in Image, where: i.image_type == "header", order_by: [desc: i.inserted_at], limit: 1)
  end

  @doc """
  Deletes an image.

  ## Examples

      iex> delete_image(image)
      {:ok, %Image{}}

  """
  def delete_image(%Image{} = image) do
    Repo.delete(image)
  end

  @doc """
  Lists all images of a specific type.

  ## Examples

      iex> list_images_by_type("logo")
      [%Image{}, ...]

  """
  def list_images_by_type(type) do
    Repo.all(from i in Image, where: i.image_type == ^type, order_by: [desc: i.inserted_at])
  end
end