exiffer

defmodule Exiffer.CLI do
  # bakeware is declared as an optional dependency in `mix.exs`.
  # This allows use of exiffer **without** including bakeware.
  # Here, we skip any use of Bakeware if it is not present.
  quote do
    if function_exported?(Bakeware.Script, :__info__, 1) do
      use Bakeware.Script

      @impl Bakeware.Script
      def main([]) do
        IO.puts(:stderr, "Please supply a command")
        list_top_level_commands()
        1
      end

      def main(["help" | _args]) do
        list_top_level_commands()
        0
      end

      def main(["read", filename]) do
        Exiffer.CLI.Read.run(filename)
        0
      end

      def main(["rewrite", source, destination, gps]) do
        Exiffer.CLI.Rewrite.run(source, destination, gps)
        0
      end

      def main(args) do
        IO.puts(:stderr, "Unknown command: '#{Enum.join(args, " ")}'")
        1
      end

      defp list_top_level_commands do
        IO.puts("exiffer read|rewrite")
      end
    end
  end
end