1 files changed, 50 insertions, 0 deletions
diff --git a/app/models/concerns/commit_signature.rb b/app/models/concerns/commit_signature.rb
new file mode 100644
index 00000000000..5bdfa9a2966
--- /dev/null
+++ b/app/models/concerns/commit_signature.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+module CommitSignature
+  extend ActiveSupport::Concern
+
+  included do
+    include ShaAttribute
+
+    sha_attribute :commit_sha
+
+    enum verification_status: {
+      unverified: 0,
+      verified: 1,
+      same_user_different_email: 2,
+      other_user: 3,
+      unverified_key: 4,
+      unknown_key: 5,
+      multiple_signatures: 6
+    }
+
+    belongs_to :project, class_name: 'Project', foreign_key: 'project_id', optional: false
+
+    validates :commit_sha, presence: true
+    validates :project_id, presence: true
+
+    scope :by_commit_sha, ->(shas) { where(commit_sha: shas) }
+  end
+
+  class_methods do
+    def safe_create!(attributes)
+      create_with(attributes)
+        .safe_find_or_create_by!(commit_sha: attributes[:commit_sha])
+    end
+
+    # Find commits that are lacking a signature in the database at present
+    def unsigned_commit_shas(commit_shas)
+      return [] if commit_shas.empty?
+
+      signed = by_commit_sha(commit_shas).pluck(:commit_sha)
+      commit_shas - signed
+    end
+  end
+
+  def commit
+    project.commit(commit_sha)
+  end
+
+  def user
+    commit.committer
+  end
+end