From 3babe2935555a15067768b767cb05516a66a7a5e Mon Sep 17 00:00:00 2001
From: "exercism-solutions-syncer[bot]"
 <211797793+exercism-solutions-syncer[bot]@users.noreply.github.com>
Date: Thu, 7 Aug 2025 07:33:24 +0000
Subject: [PATCH] [Sync Iteration] elixir/secret-handshake/2

---
 .../2/lib/secret_handshake.ex                 | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 solutions/elixir/secret-handshake/2/lib/secret_handshake.ex

diff --git a/solutions/elixir/secret-handshake/2/lib/secret_handshake.ex b/solutions/elixir/secret-handshake/2/lib/secret_handshake.ex
new file mode 100644
index 0000000..5d58f16
--- /dev/null
+++ b/solutions/elixir/secret-handshake/2/lib/secret_handshake.ex
@@ -0,0 +1,37 @@
+defmodule SecretHandshake do
+  import Bitwise
+  
+  @doc """
+  Determine the actions of a secret handshake based on the binary
+  representation of the given `code`.
+
+  If the following bits are set, include the corresponding action in your list
+  of commands, in order from lowest to highest.
+
+  1 = wink
+  10 = double blink
+  100 = close your eyes
+  1000 = jump
+
+  10000 = Reverse the order of the operations in the secret handshake
+  """
+  @spec commands(code :: integer) :: list(String.t())
+  def commands(code), do: do_commands(code)
+
+  defp do_commands(code, actions \\ [])
+  defp do_commands(0, actions), do: Enum.reverse(actions)
+  defp do_commands(code, actions) when bor(code, 0b1) == code,
+    do: do_commands(code - 0b1, ["wink" | actions])
+    
+  defp do_commands(code, actions) when bor(code, 0b10) == code,
+    do: do_commands(code - 0b10, ["double blink" | actions])
+    
+  defp do_commands(code, actions) when bor(code, 0b100) == code,
+    do: do_commands(code - 0b100, ["close your eyes" | actions])
+    
+  defp do_commands(code, actions) when bor(code, 0b1000) == code,
+    do: do_commands(code - 0b1000, ["jump" | actions])
+    
+  defp do_commands(code, actions) when bor(code, 0b10000) == code, do: actions
+  defp do_commands(_, _), do: []
+end