diff --git a/exercises/command_parser.rb b/exercises/done/command_parser.rb
similarity index 60%
rename from exercises/command_parser.rb
rename to exercises/done/command_parser.rb
index 1e644c8..0af0bf6 100644
--- a/exercises/command_parser.rb
+++ b/exercises/done/command_parser.rb
@@ -48,5 +48,36 @@
 # => { action: :invalid }
 
 def parse_command(input)
-  # À compléter.
+  response = {}
+  parts = input.strip.split
+
+  case parts[0]
+  when "help"
+    if parts.size == 1
+      response[:action] = :help
+    else
+      response[:action] = :invalid
+    end
+  when "quit"
+    if parts.size == 1
+      response[:action] = :quit
+    else
+      response[:action] = :invalid
+    end
+  when "play"
+    if parts.size == 2 && parts[1].match?(/\A\d+\z/) && parts[1].to_i > 0
+      response[:action] = :play
+      response[:card] = parts[1].to_i
+    else
+      response[:action] = :invalid
+    end
+  else
+    response[:action] = :invalid
+  end
+
+  response
 end
+
+print "Entrez une action : "
+input = gets.chomp
+puts parse_command(input)