Flat File Export and Daily Update Task

app/controllers/api/v1/data_controller.rb

@@ -16,6 +16,15 @@ class DataController < ApplicationController
       def index
 
         @data ||= DataView.all
+
+        # Specify the file name you want to check in the public directory
+        file_path = Rails.root.join("public", "all_data.json")
+
+        # Check if none of the params keys start with "query_" and if the file exists
+        if params.keys.none? { |key| key.to_s.start_with?('query_') } && File.exist?(file_path)
+            send_file(file_path)
+            return
+        end
 
         # lab_identifier (v1: labnr)
         unless params[:query_labnr].nil?
@@ -66,13 +75,8 @@ def index
           )
         end
 
-        logger.debug "====================="
-        logger.debug DataView.select("json_agg(json_build_object('measurement', measurement)) AS measurements").from(@data).to_sql
-        logger.debug "====================="
-
         #render json: @data.to_json      
-        render json: C14.connection.exec_query(DataView.select("json_agg(json_build_object('measurement', subquery)) AS measurements").from(@data).to_sql)[0]['measurements'], adapter: nil, serializer: nil        
-
+        render json: C14.connection.exec_query(DataView.select("json_agg(json_build_object('measurement', subquery)) AS measurements").from(@data).to_sql)[0]['measurements'], adapter: nil, serializer: nil
       end
 
       def show

app/models/data.rb

@@ -56,6 +56,20 @@ def filter_value_string(*args)
     @filters.dig(*args).join(",") if @filters.dig(*args).present?
   end
 
+  def self.store_data_as_json
+      query = <<-SQL
+        SELECT json_agg(json_build_object('measurement', subquery)) AS measurements
+        FROM (SELECT "data_views".* FROM "data_views") subquery
+      SQL
+
+      result = C14.connection.exec_query(query)
+      measurements = result[0]['measurements']
+
+      File.open(Rails.root.join('public', 'all_data.json'), 'w') do |file|
+        file.write(measurements)
+      end
+  end
+
   private
 
   def decode_range_filters(filters)

config/schedule.rb

@@ -29,4 +29,10 @@
   every :day, at: '12:00 am' do
     rake "refreshers:data_views"
   end
-end
+end
+
+if @environment == 'production'
+  every 1.day, at: '12:00 am' do
+    runner "Data.store_data_as_json"
+  end
+end