1 files changed, 58 insertions, 0 deletions
diff --git a/lib/api/license_templates.rb b/lib/api/license_templates.rb
new file mode 100644
index 00000000000..d0552299ed0
--- /dev/null
+++ b/lib/api/license_templates.rb
@@ -0,0 +1,58 @@
+module API
+  # License Templates API
+  class LicenseTemplates < Grape::API
+    PROJECT_TEMPLATE_REGEX =
+      /[\<\{\[]
+        (project|description|
+        one\sline\s.+\swhat\sit\sdoes\.) # matching the start and end is enough here
+      [\>\}\]]/xi.freeze
+    YEAR_TEMPLATE_REGEX = /[<{\[](year|yyyy)[>}\]]/i.freeze
+    FULLNAME_TEMPLATE_REGEX =
+      /[\<\{\[]
+        (fullname|name\sof\s(author|copyright\sowner))
+      [\>\}\]]/xi.freeze
+
+    # Get the list of the available license templates
+    #
+    # Parameters:
+    #   popular - Filter licenses to only the popular ones
+    #
+    # Example Request:
+    #   GET /licenses
+    #   GET /licenses?popular=1
+    get 'licenses' do
+      options = {
+        featured: params[:popular].present? ? true : nil
+      }
+      present Licensee::License.all(options), with: Entities::RepoLicense
+    end
+
+    # Get text for specific license
+    #
+    # Parameters:
+    #   key (required) - The key of a license
+    #   project        - Copyrighted project name
+    #   fullname       - Full name of copyright holder
+    #
+    # Example Request:
+    #   GET /licenses/mit
+    #
+    get 'licenses/:key', requirements: { key: /[\w\.-]+/ } do
+      required_attributes! [:key]
+
+      not_found!('License') unless Licensee::License.find(params[:key])
+
+      # We create a fresh Licensee::License object since we'll modify its
+      # content in place below.
+      license = Licensee::License.new(params[:key])
+
+      license.content.gsub!(YEAR_TEMPLATE_REGEX, Time.now.year.to_s)
+      license.content.gsub!(PROJECT_TEMPLATE_REGEX, params[:project]) if params[:project].present?
+
+      fullname = params[:fullname].presence || current_user.try(:name)
+      license.content.gsub!(FULLNAME_TEMPLATE_REGEX, fullname) if fullname
+
+      present license, with: Entities::RepoLicense
+    end
+  end
+end