core: extract command

1 files changed, 33 insertions, 0 deletions

diff --git a/src/command.cpp b/src/command.cpp
new file mode 100644
index 0000000..092d69d
--- /dev/null
+++ b/src/command.cpp
@@ -0,0 +1,33 @@
+#include "command.hpp"
+
+namespace wanda
+{
+
+std::optional<message> command::message() const
+{
+    using namespace std::string_literals;
+    auto const command = [this] {
+        switch (id)
+        {
+        case command_id::change:
+            return "CHANGE"s;
+        default:
+            return ""s;
+        }
+    }();
+
+    auto argument_string = std::string{};
+    for (int index = 0ul; index < arguments.size(); ++index)
+    {
+        argument_string += (index) ? "," + arguments[index] : arguments[index];
+    }
+
+    if (command.empty())
+    {
+        return std::nullopt;
+    }
+
+    return wanda::message{"C", command, argument_string};
+}
+
+} // namespace wanda
\ No newline at end of file