+aesan_alerts

1 files changed, 54 insertions, 0 deletions

diff --git a/aesan_alerts.rb b/aesan_alerts.rb
new file mode 100755
index 0000000..b909ee7
--- /dev/null
+++ b/aesan_alerts.rb
@@ -0,0 +1,54 @@
+#!/usr/bin/env ruby
+
+require 'net/http'
+require 'uri'
+require 'nokogiri'
+
+AESAN_HOST = 'https://www.aesan.gob.es'
+AESAN_NEWS_URI = "#{AESAN_HOST}/AECOSAN/web/seguridad_alimentaria/subseccion/otras_alertas_alimentarias.htm"
+READ_TITLES_FILE = './aesan_read.txt'
+
+def read_title(file_path, line)
+  unless File.exist?(file_path)
+    File.open(file_path, 'w') {}
+  end
+
+  file_content = File.readlines(file_path).map(&:chomp)
+
+  if file_content.include?(line)
+    return false
+  else
+    File.open(file_path, 'a') do |file|
+      file.puts(line)
+    end
+    return true
+  end
+end
+
+def fetch_first_paragraph(url)
+  response = Net::HTTP.get_response(URI.parse(url))
+
+  if response.is_a?(Net::HTTPSuccess)
+    document = Nokogiri::HTML(response.body)
+
+    ps = document.xpath('//section[@class="theContent"]/p/a').filter_map do |p|
+      title = p.text.gsub(/^\s+|\s+$/, '')
+      "* #{title} - #{AESAN_HOST}/#{p['href']}" if read_title(READ_TITLES_FILE, title)
+    end
+
+    if ps.any?
+      if ps.length == 1
+        puts "Se ha publicado una nueva alerta alimentaria en AESAN:\n"
+      else
+        puts "Se han publicado una o más alertas alimentarias en AESAN:\n"
+      end
+      puts ps
+    else
+      warn "No se encontró ningún resultado"
+    end
+  else
+    warn "Error al acceder a la página: #{response.code} #{response.message}"
+  end
+end
+
+fetch_first_paragraph(AESAN_NEWS_URI)