more added to the scraper. trying to pack the data from advisories now into a data hash

tools/mozilla/security_advisory_scraper/mozilla_security_advisory_scraper.rb

@@ -1,45 +1,61 @@
 require 'rest-client'
 require 'nokogiri'
 
-
-
-## CURRENT ISSUE: 502 BAD GATEWAY WHEN TESTING GET_ADVISORY_URLS METHOD. 
-## TODO: COPY THE EXACT HEADERS THAT YOU ARE GIVING FROM THE WEB BROWSER
-## AND SEND THEM WITH THIS REQUEST AND TEST AGAIN.
 class MozillaSecurityAdvisoryScraper
-  attr_accessor :index_url
+  attr_accessor :index_url, :default_headers, :advisory_urls
+
   def initialize()
     @index_url = "https://www.mozilla.org/en-US/security/advisories"
-  end
-
-  def get_index
-    headers = { 
+    @default_headers = {
       :accept => 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8',
       :user_agent => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0'
     }
-    response = RestClient::Request.execute(
-      :method => :get,
-      :url => index_url,
-      :headers => headers
-    )
-    if response.code == 200
-      response.body
-    else
-      puts "HTTP Status code: #{r.code}"
-    end
+    @advisory_urls ||= get_advisory_urls
   end
 
-  def parse_index(response_body)
+  def get_index
+    get(index_url)
+  end
+
+  def get_advisory(advisory_url)
+    get(advisory_url)
+  end
+
+  def parse_html(response_body)
     Nokogiri::HTML(response_body)
   end
 
-  def advisory_urls(html_doc)
+  def advisory_urls_in_html(html_doc)
     html_doc.xpath('//li[@class="level-item"]/a').map {|link| relative_url = link['href']; "https://www.mozilla.org#{relative_url}"}
   end
 
   def get_advisory_urls
     body = get_index
-    doc = parse_index(body)
-    advisory_urls(doc)
+    doc = parse_html(body)
+    advisory_urls_in_html(doc)
+  end
+
+  def get(url)
+    response = RestClient::Request.execute(
+      :method => :get,
+      :url => url,
+      :headers => default_headers
+      )
+    if response.code == 200
+      response.body
+    else
+      puts "HTTP Status: #{response.code}"
+    end
+  end
+
+  # we know its the very first dl tag w class name summary
+  def parse_advisory_summary(advisory_doc)
+    nodes = advisory_doc.xpath('//dl[@class="summary"]').first.children
+    # dd tags and dt tags have the info we care about. dt tag is the key, dd
+    # tag is the value
+  end
+
+  def parse_advisory_cve(advisory_doc)
+    advisory_doc.xpath('//dl[@class="cve"]')
   end
 end