1 files changed, 102 insertions, 0 deletions
diff --git a/tooling/danger/product_intelligence.rb b/tooling/danger/product_intelligence.rb
new file mode 100644
index 00000000000..0f77f6c6a71
--- /dev/null
+++ b/tooling/danger/product_intelligence.rb
@@ -0,0 +1,102 @@
+# frozen_string_literal: true
+# rubocop:disable Style/SignalException
+
+module Tooling
+  module Danger
+    module ProductIntelligence
+      WORKFLOW_LABELS = [
+        'product intelligence::approved',
+        'product intelligence::review pending'
+      ].freeze
+
+      TRACKING_FILES = [
+        'lib/gitlab/tracking.rb',
+        'spec/lib/gitlab/tracking_spec.rb',
+        'app/helpers/tracking_helper.rb',
+        'spec/helpers/tracking_helper_spec.rb',
+        'app/assets/javascripts/tracking.js',
+        'spec/frontend/tracking_spec.js',
+        'generator_templates/usage_metric_definition/metric_definition.yml',
+        'lib/generators/gitlab/usage_metric/usage_metric_generator.rb',
+        'lib/generators/gitlab/usage_metric_definition_generator.rb',
+        'lib/generators/gitlab/usage_metric_definition/redis_hll_generator.rb',
+        'spec/lib/generators/gitlab/usage_metric_generator_spec.rb',
+        'spec/lib/generators/gitlab/usage_metric_definition_generator_spec.rb',
+        'spec/lib/generators/gitlab/usage_metric_definition/redis_hll_generator_spec.rb',
+        'config/metrics/schema.json'
+      ].freeze
+
+      def missing_labels
+        return [] unless helper.ci?
+
+        labels = []
+        labels << 'product intelligence' unless helper.mr_has_labels?('product intelligence')
+        labels << 'product intelligence::review pending' unless helper.mr_has_labels?(WORKFLOW_LABELS)
+
+        labels
+      end
+
+      def matching_changed_files
+        tracking_changed_files = all_changed_files & TRACKING_FILES
+        usage_data_changed_files = all_changed_files.grep(%r{(usage_data)})
+
+        usage_data_changed_files + tracking_changed_files + metrics_changed_files + dictionary_changed_file + snowplow_changed_files
+      end
+
+      def need_dictionary_changes?
+        required_dictionary_update_changed_files.any? && dictionary_changed_file.empty?
+      end
+
+      private
+
+      def all_changed_files
+        helper.all_changed_files
+      end
+
+      def dictionary_changed_file
+        all_changed_files.grep(%r{(doc/development/usage_ping/dictionary\.md)})
+      end
+
+      def metrics_changed_files
+        all_changed_files.grep(%r{((ee/)?config/metrics/.*\.yml)})
+      end
+
+      def matching_files?(file, extension:, pattern:)
+        return unless file.end_with?(extension)
+
+        helper.changed_lines(file).grep(pattern).any?
+      end
+
+      def snowplow_changed_files
+        js_patterns = Regexp.union(
+          'Tracking.event',
+          /\btrack\(/,
+          'data-track-event',
+          'data-track-action'
+        )
+        all_changed_files.select do |file|
+          matching_files?(file, extension: '.rb', pattern: %r{Gitlab::Tracking\.(event|enabled\?|snowplow_options)$}) ||
+            matching_files?(file, extension: '.js', pattern: js_patterns) ||
+            matching_files?(file, extension: '.vue', pattern: js_patterns) ||
+            matching_files?(file, extension: '.haml', pattern: %r{data: \{ track})
+        end
+      end
+
+      def required_dictionary_update_changed_files
+        dictionary_pattern = Regexp.union(
+          'key_path:',
+          'description:',
+          'product_section:',
+          'product_stage:',
+          'product_group:',
+          'status:',
+          'tier:'
+        )
+
+        metrics_changed_files.select do |file|
+          matching_files?(file, extension: '.yml', pattern: dictionary_pattern)
+        end
+      end
+    end
+  end
+end