Consolidate CSV generator code

bin/build

@@ -34,7 +34,13 @@ def write_csv(path_items, filename, data)
   FileUtils.mkdir_p(dir)
   @log.debug dir
   fn = File.join(dir, filename + '.csv')
-  File.write(fn, data)
+  
+  csv_string = CSV.generate do |csv|
+    csv << data.first.keys # header row
+    data.each { |row| csv << row.values }
+  end
+  
+  File.write(fn, csv_string)
   @log.info fn
 end
 
@@ -57,22 +63,11 @@ def gen_homepage
   write_page('.', 'index', { summary: summary })
 
   # Summary CSV file
-  csv_string = CSV.generate do |csv|
-    csv << summary.first.keys # header row
-    summary.each { |row| csv << row.values }
-  end
-
-  write_csv('.', 'inlink-summary', csv_string)  
+  write_csv('.', 'inlink-summary', summary)  
 
   # Full CSV file  
   apps = ScraperWiki.select("* from applications")
-  
-  csv_string = CSV.generate do |csv|
-    csv << apps.first.keys # header row
-    apps.each { |app| csv << app.values }
-  end
-
-  write_csv('.', 'inlink-full', csv_string)  
+  write_csv('.', 'inlink-full', apps)  
 end
 
 def gen_new
@@ -96,15 +91,11 @@ def gen_authorities
       where authority_name = '#{auth['authority_name']}'
       group by status, decision, appeal_status, appeal_decision
       ")
-    apps = ScraperWiki.select("* from applications where authority_name='#{auth['authority_name']}' order by date_received")
-    write_page(['authorities', slug(auth['authority_name'])], 'authority', { apps: apps, auth: auth, summary: summary })
 
-    csv_string = CSV.generate do |csv|
-      csv << apps.first.keys # header row
-      apps.each { |app| csv << app.values }
-    end
+    apps = ScraperWiki.select("* from applications where authority_name='#{auth['authority_name']}' order by date_received")
 
-    write_csv(['authorities', slug(auth['authority_name'])], slug(auth['authority_name']), csv_string)
+    write_page(['authorities', slug(auth['authority_name'])], 'authority', { apps: apps, auth: auth, summary: summary })
+    write_csv(['authorities', slug(auth['authority_name'])], slug(auth['authority_name']), apps)
   end
 end