add lookup result

Rakefile

@@ -11,30 +11,43 @@ OG_IDS = [
   'OG-2021-USCIS'
 ]
 INDEX_PATH    = './build/index.json'
+LOOKUP_PATH   = './build/anum_lookup.csv'
 HTML_PATH     = './build/index.html'
 TEMPLATE_PATH = './lib/template.html'
 
+FETCHED_OG_INDEXES = OG_IDS.map { |id| { id => JSON.parse(HTTParty.get("https://migrants-and-the-state.github.io/#{id.downcase}/index.json").body) } }.inject(:merge)
+
 def formatted_datetime(time = Time.now)
   fmt_date  = "#{time.month}/#{time.day}/#{time.year}"
   fmt_time  = "#{time.hour}:#{time.min.to_s.rjust(2, '0')}#{time.zone}"
   "#{fmt_date} at #{fmt_time}"
 end
 
 namespace :build do
+  desc 'build aggregated list of anums and order_group ids'
+  task :anums_lookup do 
+    lookup = []
+    FETCHED_OG_INDEXES.each { |og_id,index| index.each { |afile| lookup << [afile['id'],og_id]} }
+    puts "Writing anum lookup table to #{LOOKUP_PATH}"
+    File.open(LOOKUP_PATH, 'w') do |file| 
+      file.puts "anumber,og_id"
+      lookup.each { |pair| file.puts pair.join(",")}
+    end
+    puts "\nDone ✓\n"
+  end 
+
   desc 'build aggregated index'
   task :index do    
-    index = []
-
-    OG_IDS.each do |og_id|
-      url     = "https://migrants-and-the-state.github.io/#{og_id.downcase}/index.json"
-      hashes  = JSON.parse(HTTParty.get(url).body)
-      hashes.map! { |h| h['order_group'] = og_id; h }
-      puts "Adding #{hashes.length} items from #{og_id} to the index"
-      hashes.each { |hash| index << hash }
+    aggregate_index = []
+
+    FETCHED_OG_INDEXES.each do |og_id, index|
+      index.map! { |hash| hash['order_group'] = og_id; hash }
+      puts "Adding #{index.length} items from #{og_id} to the aggregate index"
+      index.each { |hash| aggregate_index << hash }
     end
 
-    puts "Writing aggregated index with #{index.length} items to #{INDEX_PATH}"
-    File.open(INDEX_PATH, 'w') { |file| file.write JSON.pretty_generate(index) }
+    puts "Writing aggregated index with #{aggregate_index.length} items to #{INDEX_PATH}"
+    File.open(INDEX_PATH, 'w') { |file| file.write JSON.pretty_generate(aggregate_index) }
     puts "\nDone ✓\n"
   end
 
@@ -53,6 +66,7 @@ namespace :build do
 
   desc 'build everything'
   task :all do 
+    Rake::Task['build:anums_lookup'].execute 
     Rake::Task['build:index'].execute 
     Rake::Task['build:html'].execute    
   end