From 7f25cd49fec6488e7d9384ee1cdf29da905bd22b Mon Sep 17 00:00:00 2001
From: Cyberarm <matthewlikesrobots@gmail.com>
Date: Wed, 29 Jan 2020 18:22:24 -0600
Subject: [PATCH] Added ConfigFile for persistent hash storage

---
 lib/cyberarm_engine.rb             |  2 ++
 lib/cyberarm_engine/config_file.rb | 46 ++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 lib/cyberarm_engine/config_file.rb

diff --git a/lib/cyberarm_engine.rb b/lib/cyberarm_engine.rb
index a7c67f3..d534894 100644
--- a/lib/cyberarm_engine.rb
+++ b/lib/cyberarm_engine.rb
@@ -4,6 +4,7 @@ rescue LoadError => e
   pp e
   require "gosu"
 end
+require "json"
 
 require_relative "cyberarm_engine/version"
 
@@ -24,6 +25,7 @@ require_relative "cyberarm_engine/animator"
 
 require_relative "cyberarm_engine/text"
 require_relative "cyberarm_engine/timer"
+require_relative "cyberarm_engine/config_file"
 
 require_relative "cyberarm_engine/ui/dsl"
 
diff --git a/lib/cyberarm_engine/config_file.rb b/lib/cyberarm_engine/config_file.rb
new file mode 100644
index 0000000..ece9dbc
--- /dev/null
+++ b/lib/cyberarm_engine/config_file.rb
@@ -0,0 +1,46 @@
+module CyberarmEngine
+  class ConfigFile
+    def initialize(file:)
+      @file = file
+
+      if File.exist?(@file)
+        deserialize
+      else
+        @data = {}
+      end
+    end
+
+    def []= *keys, value
+      last_key = keys.last
+
+      if keys.size == 1
+        hash = @data
+      else
+        keys.pop
+        hash = @data[keys.shift] ||= {}
+
+        keys.each do |key|
+          hash[key] ||= {}
+        end
+      end
+
+      hash[last_key] = value
+    end
+
+    def get(*keys)
+      @data.dig(*keys)
+    end
+
+    def serialize
+      JSON.dump(@data)
+    end
+
+    def deserialize
+      @data = JSON.parse(File.read(@file), symbolize_names: true)
+    end
+
+    def save!
+      File.open(@file, "w") { |f| f.write(serialize) }
+    end
+  end
+end