feat: show fortune

lib/nerves_motd.ex

@@ -22,7 +22,10 @@ defmodule NervesMOTD do
   @typedoc """
   MOTD options
   """
-  @type option() :: {:logo, IO.ANSI.ansidata()} | {:extra_rows, [row()]}
+  @type option() ::
+          {:logo, IO.ANSI.ansidata()}
+          | {:extra_rows, [row()]}
+          | {:show_fortune?, boolean()}
 
   @typedoc """
   One row of information
@@ -48,6 +51,7 @@ defmodule NervesMOTD do
     an empty logo (`""`) to remove it completely.
   * `:extra_rows` - a list of custom rows or a callback for returning rows.
     The callback can be a 0-arity function reference or MFArgs tuple.
+  * `:show_fortune?` - a boolean flag to show fortune.
   """
   @spec print([option()]) :: :ok
   def print(opts \\ []) do
@@ -62,9 +66,7 @@ defmodule NervesMOTD do
         "\n",
         Enum.map(rows(apps, combined_opts), &format_row/1),
         "\n",
-        """
-        Nerves CLI help: https://hexdocs.pm/nerves/iex-with-nerves.html
-        """
+        fortune(opts)
       ]
       |> IO.ANSI.format()
       |> IO.puts()
@@ -82,6 +84,17 @@ defmodule NervesMOTD do
     Keyword.get(opts, :logo, @logo)
   end
 
+  @spec fortune([option()]) :: IO.ANSI.ansidata()
+  defp fortune(opts) do
+    case Code.ensure_compiled(Fortune) do
+      {:module, fortune_mod} ->
+        if opts[:show_fortune?], do: [fortune_mod.random!(), "\n"], else: []
+
+      _ ->
+        []
+    end
+  end
+
   @spec rows(map(), list()) :: [[cell()]]
   defp rows(apps, opts) do
     [

mix.exs

@@ -34,6 +34,8 @@ defmodule NervesMOTD.MixProject do
     [
       {:nerves_runtime, "~> 0.8"},
       {:nerves_time, "~> 0.4", optional: true},
+      {:nerves_tips, github: "nerves-project/nerves_tips", only: [:dev, :test], optional: true},
+      {:fortune, "~> 0.1", only: [:dev, :test], optional: true},
       {:credo, "~> 1.5", only: [:dev, :test], runtime: false},
       {:dialyxir, "~> 1.1", only: :dev, runtime: false},
       {:ex_doc, "~> 0.25", only: :docs, runtime: false},

mix.lock

@@ -7,6 +7,7 @@
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
   "ex_doc": {:hex, :ex_doc, "0.30.9", "d691453495c47434c0f2052b08dd91cc32bc4e1a218f86884563448ee2502dd2", [:mix], [{:earmark_parser, "~> 1.4.31", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "d7aaaf21e95dc5cddabf89063327e96867d00013963eadf2c6ad135506a8bc10"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
+  "fortune": {:hex, :fortune, "0.1.0", "cf607c436159ce03cd30a7dd832996d1cc673ad1538831d2415af7cd83d649aa", [:mix], [], "hexpm", "9bf386a8574a83e44e11b375512c5079470c8d281bbb51c108689ca5962e47eb"},
   "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
   "makeup": {:hex, :makeup, "1.1.0", "6b67c8bc2882a6b6a445859952a602afc1a41c2e08379ca057c0f525366fc3ca", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "0a45ed501f4a8897f580eabf99a2e5234ea3e75a4373c8a52824f6e873be57a6"},
   "makeup_elixir": {:hex, :makeup_elixir, "0.16.1", "cc9e3ca312f1cfeccc572b37a09980287e243648108384b97ff2b76e505c3555", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "e127a341ad1b209bd80f7bd1620a15693a9908ed780c3b763bccf7d200c767c6"},
@@ -18,6 +19,7 @@
   "nerves_runtime": {:hex, :nerves_runtime, "0.13.6", "aef9cb5e6232605d4e5421b297f41cde0535a53913c21e51c7ebe6c71c1b9cf6", [:mix], [{:nerves_logging, "~> 0.2.0", [hex: :nerves_logging, repo: "hexpm", optional: false]}, {:nerves_uevent, "~> 0.1.0", [hex: :nerves_uevent, repo: "hexpm", optional: false]}, {:uboot_env, "~> 1.0 or ~> 0.3.0", [hex: :uboot_env, repo: "hexpm", optional: false]}], "hexpm", "44b031f46542079d67d3ef0bd7b0c966e580909dd5cc61b7825a76e881e7cd5a"},
   "nerves_time": {:hex, :nerves_time, "0.4.6", "f02e5e866149f3884a4b125104a5b677f7e61d271c1f7d87bc989197dc02dae5", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}, {:muontrap, "~> 1.0 or ~> 0.5", [hex: :muontrap, repo: "hexpm", optional: false]}], "hexpm", "1fecb9e9dd098c0e93d35205a79e604831779f2d2313cfe7c31d181678e26ce6"},
   "nerves_time_zones": {:hex, :nerves_time_zones, "0.3.3", "4d1c2e2d852efe239845b16d0bb99dcaa761b74a0da6e84f6a3c4c5006fbe994", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}, {:zoneinfo, "~> 0.1.2", [hex: :zoneinfo, repo: "hexpm", optional: false]}], "hexpm", "46e260ebe0db65952a24d08fa8c2da6df5512ab22c567bde4f8cce60b7ff403a"},
+  "nerves_tips": {:git, "https://github.com/nerves-project/nerves_tips.git", "92e012d9885c7fa6406b8d6b29168cb459273ad1", []},
   "nerves_uevent": {:hex, :nerves_uevent, "0.1.0", "651111a46be9a238560cbf7946989fc500e5f33d7035fd9ea7194d07a281bc19", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}, {:property_table, "~> 0.2.0", [hex: :property_table, repo: "hexpm", optional: false]}], "hexpm", "cb0b1993c3ed3cefadbcdb534e910af0661f95c3445796ce8a7c8be3519a4e5f"},
   "nimble_parsec": {:hex, :nimble_parsec, "1.3.1", "2c54013ecf170e249e9291ed0a62e5832f70a476c61da16f6aac6dca0189f2af", [:mix], [], "hexpm", "2682e3c0b2eb58d90c6375fc0cc30bc7be06f365bf72608804fb9cffa5e1b167"},
   "property_table": {:hex, :property_table, "0.2.4", "c53e3684b6da8cb77ceee89f8c7a980d6c626429a6653473db29c210b9d53103", [:mix], [], "hexpm", "feae0e06fee2740452dd8375eb2c3407ece12317525491345f141dcbe1b9442c"},