1 files changed, 47 insertions, 0 deletions
diff --git a/app/models/ci/freeze_period_status.rb b/app/models/ci/freeze_period_status.rb
new file mode 100644
index 00000000000..befa935e750
--- /dev/null
+++ b/app/models/ci/freeze_period_status.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+module Ci
+  class FreezePeriodStatus
+    attr_reader :project
+
+    def initialize(project:)
+      @project = project
+    end
+
+    def execute
+      project.freeze_periods.any? { |period| within_freeze_period?(period) }
+    end
+
+    def within_freeze_period?(period)
+      # previous_freeze_end, ..., previous_freeze_start, ..., NOW, ..., next_freeze_end, ..., next_freeze_start
+      # Current time is within a freeze period if
+      # it falls between a previous freeze start and next freeze end
+      start_freeze = Gitlab::Ci::CronParser.new(period.freeze_start, period.cron_timezone)
+      end_freeze = Gitlab::Ci::CronParser.new(period.freeze_end, period.cron_timezone)
+
+      previous_freeze_start = previous_time(start_freeze)
+      previous_freeze_end = previous_time(end_freeze)
+      next_freeze_start = next_time(start_freeze)
+      next_freeze_end = next_time(end_freeze)
+
+      previous_freeze_end < previous_freeze_start &&
+        previous_freeze_start <= time_zone_now &&
+        time_zone_now <= next_freeze_end &&
+        next_freeze_end < next_freeze_start
+    end
+
+    private
+
+    def previous_time(cron_parser)
+      cron_parser.previous_time_from(time_zone_now)
+    end
+
+    def next_time(cron_parser)
+      cron_parser.next_time_from(time_zone_now)
+    end
+
+    def time_zone_now
+      @time_zone_now ||= Time.zone.now
+    end
+  end
+end