From d603b662156f4461669298d2c913b62ce24258bc Mon Sep 17 00:00:00 2001
From: Marco Marinho <marcomarinho12@gmail.com>
Date: Wed, 19 Jun 2024 09:39:19 +0100
Subject: [PATCH] feat: Add attachments in email reply

---
 .../conversation_reply_mailer_helper.rb       | 27 +++++++++++++++++++
 .../conversation_transcript.html.erb          |  3 ++-
 .../email_reply.html.erb                      |  5 ++--
 3 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/app/mailers/conversation_reply_mailer_helper.rb b/app/mailers/conversation_reply_mailer_helper.rb
index 198e9f2a19f32..b84863e3bd54d 100644
--- a/app/mailers/conversation_reply_mailer_helper.rb
+++ b/app/mailers/conversation_reply_mailer_helper.rb
@@ -19,6 +19,33 @@ def prepare_mail(cc_bcc_enabled)
 
     Rails.logger.info("Email sent from #{email_from} to #{to_emails} with subject #{mail_subject}")
 
+    if @message.attachments.present?
+      @options[:attachments] = []
+
+      @message.attachments.each do |attachment|
+        raw_data = attachment.file.download
+        attachment_name = attachment.file.filename.to_s
+        temp_dir = Rails.root.join('tmp/uploads')
+        FileUtils.mkdir_p(temp_dir)
+        temp_file_path = File.join(temp_dir, attachment_name)
+        File.write(temp_file_path, raw_data, mode: 'wb')
+        temp_file_path
+
+        # Get the size of the file before downloading
+        file_size = raw_data.bytesize
+
+        if file_size < 25.megabytes
+          # Store the temp file path and attachment name
+          @options[:attachments] << { name: attachment_name, path: temp_file_path }
+          mail.attachments[attachment_name] = File.read(temp_file_path)
+
+          Rails.logger.info("Attachment saved to #{temp_file_path}.")
+        else
+          Rails.logger.warn("Attachment #{attachment_name} is larger than 25MB and will be sent as a link")
+        end
+      end
+    end
+
     mail(@options)
   end
 
diff --git a/app/views/mailers/conversation_reply_mailer/conversation_transcript.html.erb b/app/views/mailers/conversation_reply_mailer/conversation_transcript.html.erb
index 0ea0f301b17d8..2f8158c0bd55e 100644
--- a/app/views/mailers/conversation_reply_mailer/conversation_transcript.html.erb
+++ b/app/views/mailers/conversation_reply_mailer/conversation_transcript.html.erb
@@ -34,7 +34,8 @@
       <% end %>
       <% if message.attachments %>
         <% message.attachments.each do |attachment| %>
-          Attachment [<a href="<%= attachment.file_url %>" _target="blank">Click here to view</a>]
+          Attachment 
+          <p>[<a href="<%= attachment.file_url %>" _target="blank"><%= attachment.file.filename.to_s %></a>]</p>
         <% end %>
       <% end %>
       <p style="font-size: 90%; font-size: 90%;color: #899096;margin-top: -8px; margin-bottom: 0px;">
diff --git a/app/views/mailers/conversation_reply_mailer/email_reply.html.erb b/app/views/mailers/conversation_reply_mailer/email_reply.html.erb
index 1d943c27e7571..4459e886f0188 100644
--- a/app/views/mailers/conversation_reply_mailer/email_reply.html.erb
+++ b/app/views/mailers/conversation_reply_mailer/email_reply.html.erb
@@ -1,8 +1,9 @@
 <% if @message.content %>
   <%= ChatwootMarkdownRenderer.new(@message.content).render_message %>
 <% end %>
-<% if @message.attachments %>
+<% if @message.attachments && !defined?(@options[:attachments]) %>
   <% @message.attachments.each do |attachment| %>
-    attachment [<a href="<%= attachment.file_url %>" _target="blank">click here to view</a>]
+    <p>attachment</p> 
+    <p>[<a href="<%= attachment.file_url %>" _target="blank"><%= attachment.file.filename.to_s %></a>]</p>
   <% end %>
 <% end %>