From 232378ea5e02231971ee90c30e6f67e8b55bee68 Mon Sep 17 00:00:00 2001
From: Samantaz Fox <coding@samantaz.fr>
Date: Tue, 10 Aug 2021 18:48:11 +0200
Subject: [PATCH] Add a few utility methods

---
 src/invidious/user/preferences.cr | 37 +++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/src/invidious/user/preferences.cr b/src/invidious/user/preferences.cr
index 82e381ba..b346ebca 100644
--- a/src/invidious/user/preferences.cr
+++ b/src/invidious/user/preferences.cr
@@ -66,6 +66,43 @@ class Preferences
 
   property volume : Int32 = 100
 
+  def initialize
+  end
+
+  # Duplicate (make a perfect copy of) the current object
+  def dup
+    other = Preferences.new
+
+    {% for ivar in @type.instance_vars %}
+      other.{{ ivar.id }} = {{ ivar.id }}
+    {% end %}
+
+    return other
+  end
+
+  # :nodoc:
+  def text_dump(include_defaults = false)
+    {% for ivar in @type.instance_vars %}
+      name    = {{ ivar.id.stringify }}
+      value   = {{ ivar.id }}
+      default = {{ ivar.default_value }}
+
+      puts "#{name} = #{value}" if (include_defaults || value != default)
+    {% end %}
+  end
+
+  # :nodoc:
+  def text_dump(other : Preferences)
+    # Macro that dumps, as text, all the contents of that struct
+    {% for ivar in @type.instance_vars %}
+      name = {{ ivar.id.stringify }}
+      val1 = self.{{ ivar.id }}
+      val2 = other.{{ ivar.id }}
+
+      puts "#{name} = #{val1}" if val1 != val2
+    {% end %}
+  end
+
   module BoolToString
     def self.to_json(value : String, json : JSON::Builder)
       json.string value