1 files changed, 40 insertions, 0 deletions
diff --git a/app/lib/command_tag/commands/variables.rb b/app/lib/command_tag/commands/variables.rb
new file mode 100644
index 000000000..36ba0abd3
--- /dev/null
+++ b/app/lib/command_tag/commands/variables.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+module CommandTag::Commands::Variables
+  def handle_000_variables_startup
+    @vars.merge!(persistent_vars_from(@account.metadata.fields)) if @account.metadata.present?
+  end
+
+  def handle_999_variables_shutdown
+    @account.metadata.update!(fields: nonpersistent_vars_from(@account.metadata.fields).merge(persistent_vars_from(@vars)))
+  end
+
+  def handle_set_at_start(args)
+    return if args.blank?
+
+    args[0] = normalize(args[0])
+
+    case args.count
+    when 1
+      @vars.delete(args[0])
+    else
+      @vars[args[0]] = args[1..-1]
+    end
+  end
+
+  def do_unset_at_start(args)
+    args.each do |arg|
+      @vars.delete(normalize(arg))
+    end
+  end
+
+  private
+
+  def persistent_vars_from(vars)
+    vars.select { |key, value| key.start_with?('persist:') && value.present? && value.is_a?(Array) }
+  end
+
+  def nonpersistent_vars_from(vars)
+    vars.reject { |key, value| key.start_with?('persist:') || value.blank? }
+  end
+end