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Easy deployment for Elixir apps

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deli lib deli shell.ex
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lib/deli/shell.ex 

defmodule Deli.Shell do

  @moduledoc "Provides conveniences for modules to deal with shell commands and files"



  def cmd(command) do

    with 0 <- Mix.shell().cmd(command) do

      :ok

    else

      signal ->

        IO.puts([

          IO.ANSI.reset(),

          IO.ANSI.red_background(),

          IO.ANSI.white(),

          "Deploy command failed: `#{command}`",

          IO.ANSI.reset()

        ])



        exit({:shutdown, signal})

    end

  end



  def cmd_result(command) do

    command

    |> to_charlist

    |> :os.cmd()

    |> to_string

    |> String.trim()

  end



  def edeliver(command) do

    cmd("mix edeliver #{command} --verbose")

  end



  def docker_compose(command) do

    no_tty = "COMPOSE_INTERACTIVE_NO_CLI=1"

    cmd("#{no_tty} docker-compose -f .deliver-docker-compose.yml #{command}")

  end



  def file_exists?(path) do

    path |> expand_path |> File.exists?()

  end



  def write_file(path, content, options \\ []) do

    path |> expand_path |> File.write!(content, options)

  end



  def expand_path(path) do

    path |> Path.expand(File.cwd!())

  end



  @spec error!(String.t()) :: no_return

  def error!(message) do

    Mix.shell().error(message)

    exit({:shutdown, 1})

  end

end