defmodule Enver.Mixfile do
  use Mix.Project

  ##########
  # Public #
  ##########

  def application() do
    [
      extra_applications: extra_applications(),
      mod:                mod()
    ]
  end

  def project() do
    [
      app:              app(),
      build_embedded:   Mix.env == :prod,
      deps:             deps(),
      description:      description(),
      elixir:           elixir(),
      package:          package(),
      start_permanent:  Mix.env == :prod,
      version:          version()
    ]
  end

  ###########
  # Private #
  ###########

  defp app() do
    :enver
  end

  defp deps() do
    [
      docs_generator()
    ]
  end

  defp description() do
    """
    A utility for managing application & system configuration data.
    """
  end

  defp docs_generator() do
    {:ex_doc, "~> 0.14", only: :dev}
  end

  defp elixir() do
    "~> 1.4"
  end

  defp extra_applications() do
    [
      :logger
    ]
  end

  defp files() do
    [
      "lib",
      "mix.exs",
      "CHANGELOG.md",
      "README.md",
      "LICENSE.md",
      "VERSION.txt"
    ]
  end

  defp licenses() do
    for license <- ["LICENSE.md"] do
      File.stream!(license)
      |> Enum.at(0)
      |> String.trim()
    end
  end

  defp links() do
    %{
      "GitHub" => "https://github.com/amorphid/enver-elixir"
    }
  end

  defp maintainers() do
    [
      "Michael Pope"
    ]
  end

  defp mod() do
    {Enver.Application, []}
  end

  defp package() do
    [
      files:        files(),
      licenses:     licenses(),
      links:        links(),
      maintainers:  maintainers()
    ]
  end

  defp version() do
    File.stream!("VERSION.txt")
    |> Enum.at(0)
    |> String.trim()
  end
end