defmodule ImageProcessingLib.ImageProcessor do
  def resize_image(path, width, height) do
    case File.read(path) do
      {:ok, content} ->
        case :image.resize(content, width, height) do
          {:ok, resized_content} ->
            resized_path = "resized_#{File.basename(path)}"
            File.write(resized_path, resized_content)
            {:ok, resized_path}

          {:error, reason} ->
            {:error, "Error when resizing the image: #{reason}"}
        end

      {:error, reason} ->
        {:error, "Error reading the image: #{reason}"}
    end
  end

  def apply_filter(path, filter) do
    case File.read(path) do
      {:ok, content} ->
        case :image.apply_filter(content, filter) do
          {:ok, filtered_content} ->
            filtered_path = "filtered_#{File.basename(path)}"
            File.write(filtered_path, filtered_content)
            {:ok, filtered_path}

          {:error, reason} ->
            {:error, "Error when applying the filter to the image: #{reason}"}
        end

      {:error, reason} ->
        {:error, "Error reading the image: #{reason}"}
    end
  end
end