1 files changed, 41 insertions, 0 deletions
diff --git a/app/lib/admin/metrics/measure/tag_uses_measure.rb b/app/lib/admin/metrics/measure/tag_uses_measure.rb
new file mode 100644
index 000000000..b7667bc6c
--- /dev/null
+++ b/app/lib/admin/metrics/measure/tag_uses_measure.rb
@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+class Admin::Metrics::Measure::TagUsesMeasure < Admin::Metrics::Measure::BaseMeasure
+  def self.with_params?
+    true
+  end
+
+  def key
+    'tag_uses'
+  end
+
+  def total
+    tag.history.aggregate(time_period).uses
+  end
+
+  def previous_total
+    tag.history.aggregate(previous_time_period).uses
+  end
+
+  def data
+    time_period.map { |date| { date: date.to_time(:utc).iso8601, value: tag.history.get(date).uses.to_s } }
+  end
+
+  protected
+
+  def tag
+    @tag ||= Tag.find(params[:id])
+  end
+
+  def time_period
+    (@start_at.to_date..@end_at.to_date)
+  end
+
+  def previous_time_period
+    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
+  end
+
+  def params
+    @params.permit(:id)
+  end
+end