update start import and export menu

lib/tasks/receipt.rake

@@ -1,4 +1,44 @@
 namespace :consolidate do
+
+  
+  desc 'export sers who have logged in since 2017-06-30'
+  task :export => :environment do
+    puts "Export users who have logged in since 2017-06-30"
+
+    # get a file ready, the 'data' directory has already been added in Rails.root
+    filepath = File.join(Rails.root, 'data', 'recent_users.json')
+    puts "- exporting users into #{filepath}"
+
+    # the key here is to use 'as_json', otherwise you get an ActiveRecord_Relation object, which extends
+    # array, and works like in an array, but not for exporting
+    users = Employee.all.as_json
+puts users
+    # The pretty is nice so I can diff exports easily, if that's not important, JSON(users) will do
+    File.open(filepath, 'w') do |f|
+      f.write(JSON.pretty_generate(users))
+    end
+
+    puts "- dumped #{users.size} users"
+  end
+
+  desc 'import users from recent users dump'
+  task :import => :environment do
+    puts "Importing current users"
+
+    filepath = File.join(Rails.root, 'data', 'recent_users.json')
+    abort "Input file not found: #{filepath}" unless File.exist?(filepath)
+
+    current_users = JSON.parse(File.read(filepath))
+
+    current_users.each do |cu|
+      puts cu.to_json
+      Employee.create(cu)
+    end
+
+    puts "- imported #{current_users.size} users"
+  end
+
+
   desc "Receipt"
   task :receipt => :environment do
     Receipt.delete_all