added 260907 version of worker toolkit

worker-toolkit-flaredown/repo/backend/app/models/promotion_rate.rb

@@ -0,0 +1,66 @@
+class PromotionRate
+  include Mongoid::Document
+  include Mongoid::Timestamps
+
+  MIN_SCORE_FOR_REVIWS = 8
+
+  field :date, type: Date
+  field :score, type: Integer
+  field :feedback, type: String
+  field :encrypted_user_id, type: String, encrypted: {type: :integer}
+  field :user_created_at, type: Date
+
+  belongs_to :checkin, index: true
+
+  index(date: 1, encrypted_user_id: 1)
+
+  validates :checkin, presence: true
+  validates :checkin_id, uniqueness: true
+
+  before_create :set_date_and_user_id
+
+  # '17-09-2017'
+  def self.group_by_score_and_date(start_str, end_str)
+    start_day = start_str.to_date
+    end_day = end_str.to_date
+
+    PromotionRate.collection.aggregate(
+      [
+        {"$match": {
+          date: {
+            "$gte": start_day,
+            "$lte": end_day
+          }
+        }},
+        "$group": {_id: "$score", count: {"$sum": 1}}
+      ]
+    )
+  end
+
+  # '17-09-2017'
+  def self.filter_low_scores_by_date(start_str, end_str)
+    start_day = start_str.to_date
+    end_day = end_str.to_date
+
+    PromotionRate.collection.aggregate(
+      [
+        {"$match": {
+          score: {
+            "$lte": MIN_SCORE_FOR_REVIWS
+          },
+          date: {
+            "$gte": start_day,
+            "$lte": end_day
+          }
+        }}
+      ]
+    )
+  end
+
+  protected
+
+  def set_date_and_user_id
+    self.date = checkin.date
+    self.encrypted_user_id = checkin.encrypted_user_id
+  end
+end