feat: Add message content to mention email template (#2838)

app/drops/message_drop.rb

@@ -0,0 +1,12 @@
+class MessageDrop < BaseDrop
+  include MessageFormatHelper
+
+  def sender_display_name
+    @obj.sender.try(:display_name)
+  end
+
+  def text_content
+    content = @obj.try(:content)
+    transform_user_mention_content content
+  end
+end

app/mailers/agent_notifications/conversation_notifications_mailer.rb

@@ -24,6 +24,7 @@ class AgentNotifications::ConversationNotificationsMailer < ApplicationMailer
 
     @agent = agent
     @conversation = message.conversation
+    @message = message
     subject = "#{@agent.available_name}, You have been mentioned in conversation [ID - #{@conversation.display_id}]"
     @action_url = app_account_conversation_url(account_id: @conversation.account_id, id: @conversation.display_id)
     send_mail_with_liquid(to: @agent.email, subject: subject) and return
@@ -47,7 +48,8 @@ class AgentNotifications::ConversationNotificationsMailer < ApplicationMailer
     super.merge({
                   user: @agent,
                   conversation: @conversation,
-                  inbox: @conversation.inbox
+                  inbox: @conversation.inbox,
+                  message: @message
                 })
   end
 end

app/models/application_record.rb

@@ -3,7 +3,7 @@ class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
 
   # the models that exposed in email templates through liquid
-  DROPPABLES = %w[Account Channel Conversation Inbox User].freeze
+  DROPPABLES = %w[Account Channel Conversation Inbox User Message].freeze
 
   # ModelDrop class should exist in app/drops
   def to_drop

app/views/mailers/agent_notifications/conversation_notifications_mailer/conversation_mention.liquid

@@ -1,8 +1,18 @@
-<p>Hi {{user.available_name}}</p>
+<style type="text/css">
+  .quoted-text--content {
+    box-sizing:border-box;
+    padding:8px 16px;
+    margin:0 0 20px;
+    font-size:14px;
+    border-left:5px solid #eeeeee
+  }
+</style>
 
+<p>Hi {{user.available_name}}, </p>
 
-<p>Time to save the world. You have been mentioned in a conversation</p>
+<p>You've been mentioned in a conversation. <b>{{message.sender_display_name}}</b> wrote:</p>
+<blockquote class='quoted-text--content'>
+  {{message.text_content}}
+</blockquote>
 
-<p>
-Click <a href="{{ action_url }}">here</a> to get cracking.
-</p>
+<p><a href="{{ action_url }}">View Message</a></p>