feat(core): integrate Action Mailer with Limes Email API (#1537)

Co-authored-by: Andreas Pfau <[email protected]>

Author: ArtieReus

app/mailers/core_application_mailer.rb

@@ -0,0 +1,57 @@
+require 'net/http'
+require 'uri'
+require 'json'
+
+class CoreApplicationMailer < ActionMailer::Base
+  layout "mailer"
+
+  def send_custom_email(recipient:, subject:, body_html:)
+    if Rails.configuration.limes_mail_server_endpoint.blank?
+      Rails.logger.info "Skipping email: limes_mail_server_endpoint is not set."
+      return
+    end
+
+    # Ensure uri is properly formed
+    uri = URI.parse(Rails.configuration.limes_mail_server_endpoint)
+    uri.query = URI.encode_www_form({ from: 'elektra' })
+
+    # Get the token form the mail_cloud_admin instance
+    token = mail_cloud_admin.instance_variable_get(:@api_client).token
+
+    # Set up the body for the request
+    body = {
+      recipients: Array(recipient),
+      subject: subject,
+      mime_type: 'text/html',
+      mail_text: body_html
+    }.to_json
+
+    # Set up headers
+    headers = {
+      'Content-Type' => 'application/json',
+      'X-Auth-Token' =>  token
+    }
+
+    # Create http client  
+    http = Net::HTTP.new(uri.host, uri.port)
+    http.use_ssl = true
+    # Create the HTTP request
+    request = Net::HTTP::Post.new(uri, headers)
+    request.body = body
+
+    # Make the request and handle the response
+    response = http.request(request)
+
+    Rails.logger.info "Email API Response: #{response.code} - #{response.body}"
+  end
+
+  private
+
+  def mail_cloud_admin
+    @mail_cloud_admin ||=
+      Core::ServiceLayer::ServicesManager.new(
+        Core::ApiClientManager.cloud_admin_api_client,          
+      )
+  end
+
+end

config/application.rb

@@ -134,6 +134,7 @@ def self.parent_name
     end
 
     # Mailer configuration for inquiries/requests
+    config.limes_mail_server_endpoint = ENV["LIMES_MAIL_SERVER_API_ENDPOINT"]
     config.action_mailer.raise_delivery_errors = true
     config.action_mailer.delivery_method = :smtp
     config.action_mailer.smtp_settings = {

config/environments/development.rb

@@ -96,4 +96,9 @@
 
   # Uncomment if you wish to allow Action Cable access from any origin.
   # config.action_cable.disable_request_forgery_protection = true
+
+  
+  # Uncomment this line when testing email service
+  # When generating URLs (like admin_inquiries_url) from a background job or a mailer, you need to tell Rails what host to use from rails c.
+  # config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
 end

plugins/inquiry/app/mailers/inquiry/inquiry_mailer.rb

@@ -1,5 +1,6 @@
 module Inquiry
-  class InquiryMailer < ApplicationMailer
+  class InquiryMailer < ::CoreApplicationMailer
+    
     def notification_email_requester(
       user_email,
       user_full_name,
@@ -11,11 +12,12 @@ def notification_email_requester(
       @user_full_name = user_full_name
       @inquiry_step = inquiry_step
       @inquiry = inquiry
-      mail(
-        to: @user_email,
-        subject:
-          "Converged Cloud: Your resource request is in state: #{@inquiry.aasm.human_state}",
-        content_type: "text/html",
+
+      email_body = render_to_string('inquiry/inquiry_mailer/notification_email_requester', layout: false)
+      send_custom_email(
+        recipient: @user_email,
+        subject: "Converged Cloud: Your resource request is in state: #{@inquiry.aasm.human_state}",
+        body_html: email_body
       )
     end
 
@@ -39,8 +41,14 @@ def notification_email_processors(
           subject += "/#{@inquiry.tags["domain_name"]}"
         end
       end
+
       # this is called from the model, first try with all emails at once, if a error occurs, try to send each email separately
-      mail(to: processor_emails, subject: subject, content_type: "text/html")
+      email_body = render_to_string('inquiry/inquiry_mailer/notification_email_processors', layout: false)
+      send_custom_email(
+        recipient: processor_emails,
+        subject: subject,
+        body_html: email_body
+      )
     end
 
     def notification_email_additional_recipients(
@@ -64,8 +72,14 @@ def notification_email_additional_recipients(
           subject += "/#{@inquiry.tags["domain_name"]}"
         end
       end
+
       # this is called from the model, first try with all emails at once, if a error occurs, try to send each email separately
-      mail(to: receiver_emails, subject: subject, content_type: "text/html")
+      email_body = render_to_string('inquiry/inquiry_mailer/notification_email_additional_recipients', layout: false)
+      send_custom_email(
+        recipient: receiver_emails,
+        subject: subject,
+        body_html: email_body
+      ) 
     end
 
     def notification_new_project(inform_dl, inquiry, user_full_name)
@@ -81,7 +95,15 @@ def notification_new_project(inform_dl, inquiry, user_full_name)
           subject += "/#{@inquiry.tags["domain_name"]}"
         end
       end
-      mail(to: inform_dl, subject: subject, content_type: "text/html")
+      
+      # Render the email body content
+      email_body = render_to_string('inquiry/inquiry_mailer/notification_new_project', layout: false)
+      send_custom_email(
+        recipient: inform_dl,
+        subject: subject,
+        body_html: email_body
+      )      
     end
+
   end
 end