1 files changed, 81 insertions, 0 deletions
diff --git a/lib/leap_cli/config/list.rb b/lib/leap_cli/config/list.rb
new file mode 100644
index 0000000..28ef499
--- /dev/null
+++ b/lib/leap_cli/config/list.rb
@@ -0,0 +1,81 @@
+module LeapCli
+  module Config
+    class List < Hash
+
+      def initialize(config=nil)
+        if config
+          self << config
+        end
+      end
+
+      #
+      # if the key is a hash, we treat it as a condition and filter all the configs using the condition
+      #
+      # for example:
+      #
+      #   nodes[:public_dns => true]
+      #
+      # will return a ConfigList with node configs that have public_dns set to true
+      #
+      def [](key)
+        if key.is_a? Hash
+          results = List.new
+          field, match_value = key.to_a.first
+          field = field.is_a?(Symbol) ? field.to_s : field
+          match_value = match_value.is_a?(Symbol) ? match_value.to_s : match_value
+          each do |name, config|
+            value = config[field]
+            if !value.nil?
+              if value.is_a? Array
+                if value.includes?(match_value)
+                  results[name] = config
+                end
+              else
+                if value == match_value
+                  results[name] = config
+                end
+              end
+            end
+          end
+          results
+        else
+          super
+        end
+      end
+
+      def <<(config)
+        if config.is_a? Config::List
+          self.deep_merge!(config)
+        elsif config['name']
+          self[config['name']] = config
+        else
+          raise ArgumentError.new('argument must be a Config::Base or a Config::List')
+        end
+      end
+
+      #
+      # converts the hash of configs into an array of hashes, with ONLY the specified fields
+      #
+      def fields(*fields)
+        result = []
+        keys.sort.each do |name|
+          result << self[name].pick(*fields)
+        end
+        result
+      end
+
+      #
+      # like fields(), but returns an array of values instead of an array of hashes.
+      #
+      def field(field)
+        field = field.to_s
+        result = []
+        keys.sort.each do |name|
+          result << self[name][field]
+        end
+        result
+      end
+
+    end
+  end
+end