1 files changed, 72 insertions, 0 deletions
diff --git a/lib/gitlab/changelog/config.rb b/lib/gitlab/changelog/config.rb
new file mode 100644
index 00000000000..105050936ce
--- /dev/null
+++ b/lib/gitlab/changelog/config.rb
@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Changelog
+    # Configuration settings used when generating changelogs.
+    class Config
+      # When rendering changelog entries, authors are not included.
+      AUTHORS_NONE = 'none'
+
+      # The path to the configuration file as stored in the project's Git
+      # repository.
+      FILE_PATH = '.gitlab/changelog_config.yml'
+
+      # The default date format to use for formatting release dates.
+      DEFAULT_DATE_FORMAT = '%Y-%m-%d'
+
+      # The default template to use for generating release sections.
+      DEFAULT_TEMPLATE = File.read(File.join(__dir__, 'template.tpl'))
+
+      attr_accessor :date_format, :categories, :template
+
+      def self.from_git(project)
+        if (yaml = project.repository.changelog_config)
+          from_hash(project, YAML.safe_load(yaml))
+        else
+          new(project)
+        end
+      end
+
+      def self.from_hash(project, hash)
+        config = new(project)
+
+        if (date = hash['date_format'])
+          config.date_format = date
+        end
+
+        if (template = hash['template'])
+          config.template = Parser.new.parse_and_transform(template)
+        end
+
+        if (categories = hash['categories'])
+          if categories.is_a?(Hash)
+            config.categories = categories
+          else
+            raise Error, 'The "categories" configuration key must be a Hash'
+          end
+        end
+
+        config
+      end
+
+      def initialize(project)
+        @project = project
+        @date_format = DEFAULT_DATE_FORMAT
+        @template = Parser.new.parse_and_transform(DEFAULT_TEMPLATE)
+        @categories = {}
+      end
+
+      def contributor?(user)
+        @project.team.contributor?(user)
+      end
+
+      def category(name)
+        @categories[name] || name
+      end
+
+      def format_date(date)
+        date.strftime(@date_format)
+      end
+    end
+  end
+end