Conversion HTML vers texte via Nokogiri ou Elinks

app/services/email_importer.rb

@@ -1,13 +1,16 @@
 class EmailImporter
   attr_accessor :email_class
   attr_accessor :metadata_mapping_class
+  attr_accessor :html_to_text_class
 
   def initialize(
     email_class:            Email,
     metadata_mapping_class: MetadataMapping,
+    html_to_text_class:     Rails.configuration.html_to_text_class)
 
     @email_class            = email_class
     @metadata_mapping_class = metadata_mapping_class
+    @html_to_text_class     = html_to_text_class
   end
 
   def import(mail)
@@ -31,14 +34,7 @@ class EmailImporter
   end
 
   def delivered_to(mail)
-    header = mail.header["Delivered-To"]
-    if header.respond_to?(:map)
-      header.map(&:value)
-    elsif header.respond_to?(:value)
-      header.value
-    else
-      mail.to
-    end
+    values_from_header(header: mail.header["Delivered-To"], default: Array(mail.to))
   end
 
   def text_plain_body(mail)
@@ -46,12 +42,12 @@ class EmailImporter
       if mail.text_part.present?
         mail.text_part.decoded
       elsif mail.html_part.present?
-        Nokogiri::HTML(mail.html_part.decoded).text
+        html_to_text_class.new.convert(mail.html_part.decoded)
       else
         mail.parts[0].decoded
       end
-    elsif mail.content_type && mail.content_type.match?(/text\/html/)
-      Nokogiri::HTML(mail.decoded).text
+    elsif mail.content_type && mail.content_type.match?(/\btext\/html\b/)
+      html_to_text_class.new.convert(mail.decoded)
     else
       mail.decoded
     end

app/services/html_to_text/base.rb

@@ -0,0 +1,12 @@
+module HtmlToText
+  
+  class Error < ::StandardError
+  end
+
+  class Base
+    def convert(html)
+      fail NotImplementedError
+    end
+  end
+
+end

app/services/html_to_text/elinks.rb

@@ -0,0 +1,20 @@
+module HtmlToText 
+  class Elinks < Base
+    
+    attr_accessor :elinks_path
+
+    def initialize(elinks_path: "/usr/bin/elinks")
+      @elinks_path = elinks_path
+    end
+
+    def convert(html_input)
+      output, error, status = Open3.capture3("#{elinks_path} -dump -force-html", stdin_data: html_input)
+      if status.success?
+        output
+      else
+        raise Error, "Error calling elinks : #{error}"
+      end
+    end
+
+  end
+end

app/services/html_to_text/nokogiri.rb

@@ -0,0 +1,11 @@
+module HtmlToText 
+  class Nokogiri < Base
+
+    def convert(html_input)
+      ::Nokogiri::HTML(html_input).text
+    rescue Exception, ex
+      raise Error, "Error using Nokogiri : #{ex.message}"
+    end
+
+  end
+end

config/application.rb

@@ -18,5 +18,15 @@ module Evobal
     # Application configuration can go into files in config/initializers
     # -- all .rb files in that directory are automatically loaded after loading
     # the framework and any gems in your application.
+
+    console do
+      # this block is called only when running console,
+      # so we can safely require pry here
+      require "pry"
+      config.console = Pry
+    end
+
+    config.html_to_text_class = HtmlToText::Elinks
+
   end
 end