Add security prices provider (Synth integration) (#1039)

* User tickers as primary lookup symbol instead of isin

* Add security price provider

* Fetch security prices in bulk to improve sync performance

* Fetch prices in bulk, better mocking for tests

app/models/security/price/provided.rb

@@ -0,0 +1,55 @@
+module Security::Price::Provided
+  extend ActiveSupport::Concern
+
+  include Providable
+
+  class_methods do
+    private
+
+      def fetch_price_from_provider(ticker:, date:, cache: false)
+        return nil unless security_prices_provider.present?
+
+        response = security_prices_provider.fetch_security_prices \
+          ticker: ticker,
+          start_date: date,
+          end_date: date
+
+        if response.success? && response.prices.size > 0
+          price = Security::Price.new \
+            ticker: ticker,
+            date: response.prices.first[:date],
+            price: response.prices.first[:price],
+            currency: response.prices.first[:currency]
+
+          price.save! if cache
+          price
+        else
+          nil
+        end
+      end
+
+      def fetch_prices_from_provider(ticker:, start_date:, end_date:, cache: false)
+        return [] unless security_prices_provider.present?
+
+        response = security_prices_provider.fetch_security_prices \
+          ticker: ticker,
+          start_date: start_date,
+          end_date: end_date
+
+        if response.success?
+          response.prices.map do |price|
+            new_price = Security::Price.new \
+              ticker: ticker,
+              date: price[:date],
+              price: price[:price],
+              currency: price[:currency]
+
+            new_price.save! if cache
+            new_price
+          end
+        else
+          []
+        end
+      end
+  end
+end