Merge branch '13695-order-contributors-in-api' into 'master'

Adds ordering to projects contributors in API

Closes #13695

See merge request gitlab-org/gitlab-ce!15469

2 files changed, 21 insertions, 2 deletions

diff --git a/app/models/commit.rb b/app/models/commit.rb
index 307e4fcedfe..13c31111134 100644
--- a/app/models/commit.rb
+++ b/app/models/commit.rb
@@ -52,6 +52,20 @@ class Commit
       diffs.reduce(0) { |sum, d| sum + Gitlab::Git::Util.count_lines(d.diff) }
     end
 
+    def order_by(collection:, order_by:, sort:)
+      return collection unless %w[email name commits].include?(order_by)
+      return collection unless %w[asc desc].include?(sort)
+
+      collection.sort do |a, b|
+        operands = [a, b].tap { |o| o.reverse! if sort == 'desc' }
+
+        attr1, attr2 = operands.first.public_send(order_by), operands.second.public_send(order_by) # rubocop:disable PublicSend
+
+        # use case insensitive comparison for string values
+        order_by.in?(%w[email name]) ? attr1.casecmp(attr2) : attr1 <=> attr2
+      end
+    end
+
     # Truncate sha to 8 characters
     def truncate_sha(sha)
       sha[0..MIN_SHA_LENGTH]
diff --git a/app/models/repository.rb b/app/models/repository.rb
index c0e31eca8da..28f5fc28b8c 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -697,10 +697,14 @@ class Repository
     end
   end
 
-  def contributors
+  # Params:
+  #
+  # order_by: name|email|commits
+  # sort: asc|desc default: 'asc'
+  def contributors(order_by: nil, sort: 'asc')
     commits = self.commits(nil, limit: 2000, offset: 0, skip_merges: true)
 
-    commits.group_by(&:author_email).map do |email, commits|
+    commits = commits.group_by(&:author_email).map do |email, commits|
       contributor = Gitlab::Contributor.new
       contributor.email = email
 
@@ -714,6 +718,7 @@ class Repository
 
       contributor
     end
+    Commit.order_by(collection: commits, order_by: order_by, sort: sort)
   end
 
   def refs_contains_sha(ref_type, sha)