1 files changed, 40 insertions, 0 deletions
diff --git a/components/adapter.rb b/components/adapter.rb
new file mode 100644
index 0000000..b906a27
--- /dev/null
+++ b/components/adapter.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require 'sweet-moon'
+
+module NanoBot
+  module Components
+    class Adapter
+      def self.apply(_direction, params)
+        content = params[:content]
+
+        if params[:fennel] && params[:lua]
+          raise StandardError, 'Adapter conflict: You can only use either Lua or Fennel, not both.'
+        end
+
+        if params[:fennel]
+          content = fennel(content, params[:fennel])
+        elsif params[:lua]
+          content = lua(content, params[:lua])
+        end
+
+        "#{params[:prefix]}#{content}#{params[:suffix]}"
+      end
+
+      def self.fennel(content, expression)
+        path = "#{File.expand_path('../static/fennel', __dir__)}/?.lua"
+        state = SweetMoon::State.new(package_path: path).fennel
+        state.fennel.eval("(set _G.adapter (fn [content] #{expression}))")
+        adapter = state.get(:adapter)
+        adapter.call([content])
+      end
+
+      def self.lua(content, expression)
+        state = SweetMoon::State.new
+        state.eval("adapter = function(content) return #{expression}; end")
+        adapter = state.get(:adapter)
+        adapter.call([content])
+      end
+    end
+  end
+end