feat: Authenticate by SSO tokens (#1439)

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

app/models/concerns/sso_authenticatable.rb

@@ -0,0 +1,23 @@
+module SsoAuthenticatable
+  extend ActiveSupport::Concern
+
+  def generate_sso_auth_token
+    token = SecureRandom.hex(32)
+    ::Redis::Alfred.setex(sso_token_key(token), true, 5.minutes)
+    token
+  end
+
+  def invalidate_sso_auth_token(token)
+    ::Redis::Alfred.delete(sso_token_key(token))
+  end
+
+  def valid_sso_auth_token?(token)
+    ::Redis::Alfred.get(sso_token_key(token)).present?
+  end
+
+  private
+
+  def sso_token_key(token)
+    format(::Redis::RedisKeys::USER_SSO_AUTH_TOKEN, user_id: id, token: token)
+  end
+end