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Replace SMTP with LeadMail API service for sending system transactional emails (password resets, invitations, notifications). LeadMail provides built-in email verification via Verifalia and async queue-based sending. Configuration: - Set LEADMAIL_API_TOKEN and LEADMAIL_API_URL in .env - Falls back to SMTP if LeadMail token not present - Works via custom ActionMailer delivery method (stable across upstream merges) Includes: - LeadmailDelivery class with full spec coverage - Support for multipart messages, attachments, CC/BCC - Error handling and logging with message tracking - Documentation in docs/LEADMAIL_INTEGRATION.md
106 lines
2.7 KiB
Ruby
106 lines
2.7 KiB
Ruby
class LeadmailDelivery
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attr_reader :settings
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def initialize(settings)
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@settings = settings
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end
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def deliver!(message)
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payload = build_payload(message)
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response = http_client.post('/emails/send', payload)
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unless response.success?
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raise LeadmailDeliveryError, "LeadMail API error: #{response.status} - #{response.body}"
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end
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response_data = JSON.parse(response.body)
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message.header['X-LeadMail-Log-ID'] = response_data.dig('data', 'log_id')
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Rails.logger.info("Email sent via LeadMail: log_id=#{response_data.dig('data', 'log_id')}, to=#{message.to.inspect}")
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response
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rescue StandardError => e
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Rails.logger.error("LeadMail delivery failed: #{e.message}\nPayload: #{payload.inspect}")
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raise
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end
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private
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def build_payload(message)
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{
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from: extract_from(message),
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to: extract_recipients(message.to),
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cc: extract_recipients(message.cc),
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bcc: extract_recipients(message.bcc),
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reply_to: extract_reply_to(message),
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subject: message.subject,
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html_body: html_body(message),
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text_body: text_body(message),
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attachments: extract_attachments(message),
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options: {
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on_verification_failure: 'strip',
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allow_disposable: false
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}
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}.compact
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end
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def extract_from(message)
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from_address = message.from&.first
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from_display = message[:from]&.display_names&.first
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{
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email: from_address,
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name: from_display
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}.compact
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end
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def extract_recipients(addresses)
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return nil if addresses.blank?
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Array(addresses).map { |email| { email: email } }
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end
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def extract_reply_to(message)
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reply_to_address = message.reply_to&.first
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return nil if reply_to_address.blank?
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{ email: reply_to_address }
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end
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def html_body(message)
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return message.html_part.body.to_s if message.html_part.present?
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return message.body.to_s if message.content_type&.start_with?('text/html')
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nil
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end
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def text_body(message)
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return message.text_part.body.to_s if message.text_part.present?
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return message.body.to_s if message.content_type&.start_with?('text/plain')
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nil
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end
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def extract_attachments(message)
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return nil if message.attachments.blank?
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message.attachments.map do |attachment|
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{
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filename: attachment.filename,
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mime_type: attachment.mime_type || 'application/octet-stream',
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content: Base64.strict_encode64(attachment.body.to_s)
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}
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end
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end
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def http_client
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@http_client ||= Faraday.new(
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url: settings[:api_url],
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headers: {
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'Authorization' => "Bearer #{settings[:token]}",
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'Content-Type' => 'application/json'
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}
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)
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end
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end
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class LeadmailDeliveryError < StandardError; end
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