Add first_reply_created event in conversation (#4576)

db/migrate/20220513145010_add_first_reply_activity_at_to_conversation.rb

@@ -0,0 +1,23 @@
+class AddFirstReplyActivityAtToConversation < ActiveRecord::Migration[6.1]
+  def change
+    add_column :conversations, :first_reply_created_at, :datetime
+    add_index :conversations, :first_reply_created_at
+
+    # rubocop:disable Rails/SkipsModelValidations
+    ::Conversation.update_all(first_reply_created_at: Time.now.utc)
+    # rubocop:enable Rails/SkipsModelValidations
+
+    backfill_first_reply_activity_at_to_conversations
+  end
+
+  private
+
+  def backfill_first_reply_activity_at_to_conversations
+    ::Account.find_in_batches do |account_batch|
+      Rails.logger.info "Migrated till #{account_batch.first.id}\n"
+      account_batch.each do |account|
+        Migration::ConversationsFirstReplySchedulerJob.perform_later(account)
+      end
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2022_05_11_072655) do
+ActiveRecord::Schema.define(version: 2022_05_13_145010) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_stat_statements"
@@ -385,11 +385,13 @@ ActiveRecord::Schema.define(version: 2022_05_11_072655) do
     t.datetime "snoozed_until"
     t.jsonb "custom_attributes", default: {}
     t.datetime "assignee_last_seen_at"
+    t.datetime "first_reply_created_at"
     t.index ["account_id", "display_id"], name: "index_conversations_on_account_id_and_display_id", unique: true
     t.index ["account_id"], name: "index_conversations_on_account_id"
     t.index ["assignee_id", "account_id"], name: "index_conversations_on_assignee_id_and_account_id"
     t.index ["campaign_id"], name: "index_conversations_on_campaign_id"
     t.index ["contact_inbox_id"], name: "index_conversations_on_contact_inbox_id"
+    t.index ["first_reply_created_at"], name: "index_conversations_on_first_reply_created_at"
     t.index ["last_activity_at"], name: "index_conversations_on_last_activity_at"
     t.index ["status", "account_id"], name: "index_conversations_on_status_and_account_id"
     t.index ["team_id"], name: "index_conversations_on_team_id"