Add Mastodon::Source.url (#4643)

* Add Mastodon::Source.url

* Update spec

* Refactor

Move things frmo Mastodon::Source to Mastodon::Version

app/presenters/instance_presenter.rb

@@ -31,4 +31,8 @@ class InstancePresenter
   def version_number
     Mastodon::Version
   end
+
+  def source_url
+    Mastodon::Version.source_url
+  end
 end

app/views/about/more.html.haml

@@ -63,5 +63,5 @@
   .footer-links
     .container
       %p
-        = link_to t('about.source_code'), 'https://github.com/tootsuite/mastodon'
+        = link_to t('about.source_code'), @instance_presenter.source_url
         = " (#{@instance_presenter.version_number})"

app/views/about/show.html.haml

@@ -76,5 +76,5 @@
   .footer-links
     .container
       %p
-        = link_to t('about.source_code'), 'https://github.com/tootsuite/mastodon'
+        = link_to t('about.source_code'), @instance_presenter.source_url
         = " (#{@instance_presenter.version_number})"

lib/mastodon/version.rb

@@ -31,5 +31,22 @@ module Mastodon
     def to_s
       [to_a.join('.'), flags].join
     end
+
+    def source_base_url
+      'https://github.com/tootsuite/mastodon'
+    end
+
+    # specify git tag or commit hash here
+    def source_tag
+      nil
+    end
+
+    def source_url
+      if source_tag
+        "#{source_base_url}/tree/#{source_tag}"
+      else
+        source_base_url
+      end
+    end
   end
 end

spec/views/about/show.html.haml_spec.rb

@@ -13,6 +13,7 @@ describe 'about/show.html.haml', without_verify_partial_doubles: true do
                                 site_title: 'something',
                                 site_description: 'something',
                                 version_number: '1.0',
+                                source_url: 'https://github.com/tootsuite/mastodon',
                                 open_registrations: false,
                                 closed_registrations_message: 'yes')
     assign(:instance_presenter, instance_presenter)