feat: Add release command (in progress)

Author: ongaeshi

.gitignore

@@ -6,3 +6,4 @@
 /pkg/
 /spec/reports/
 /tmp/
+/.runa/

exe/runa

@@ -40,6 +40,34 @@ class RunaCli < Thor
     system("bundle exec ruby -Ilib main.rb #{args.join(" ")}")
   end
   map "run" => "run_command"
+
+  desc "release", "Release scripts for production execution"
+  def release
+    root_dir = File.expand_path(".")
+    release_script_name = File.basename(root_dir)
+    FileUtils.mkdir_p(RUNA_DIR)
+    Dir.chdir(RUNA_DIR) do
+      path = "#{release_script_name}.bat"
+      File.write(path, release_script(root_dir))
+      puts "'#{File.join(root_dir, RUNA_DIR, path)}' generated. It can be copied to any location."
+    end
+  end
+
+  private
+
+  RUNA_DIR = ".runa"
+
+  def release_script(root_dir)
+    # TODO: Linux
+    lib_dir = File.join(root_dir, "lib").gsub("/", "\\")
+    runa_dir = File.join(root_dir, RUNA_DIR).gsub("/", "\\")
+    main_rb = File.join(root_dir, "main.rb").gsub("/", "\\")
+
+    <<~EOS
+      @ECHO OFF
+      @ruby -I"#{lib_dir}" -I"#{runa_dir}" -rruna_load_path #{main_rb} %*"
+    EOS
+  end
 end
 
 RunaCli.start(ARGV)