Commit iniziale di eminuxCRM: CRM Rails con pipeline, campagne email e Docker.

Include autenticazione, progetti isolati, mail marketing HTML con SMTP, test A/B e editor WYSIWYG.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/services/mailings/inline_images.rb

@@ -0,0 +1,48 @@
+class Mailings::InlineImages
+  BLOB_PATH = %r{/rails/active_storage/blobs/(?:redirect/|proxy/)?([^/?#]+)}
+
+  def self.call(mailer, html)
+    new(mailer).call(html)
+  end
+
+  def initialize(mailer)
+    @mailer = mailer
+  end
+
+  def call(html)
+    fragment = Nokogiri::HTML::DocumentFragment.parse(html.to_s)
+    fragment.css("img").each_with_index do |img, index|
+      blob = blob_from(img["src"])
+      next unless blob
+
+      name = "inline-#{index}-#{blob.filename}"
+      @mailer.attachments.inline[name] = {
+        mime_type: blob.content_type,
+        content: blob.download
+      }
+      img["src"] = @mailer.attachments[name].url
+      width = img["width"].presence
+      styles = ["max-width: 100%", "height: auto"]
+      styles << "width: #{width}px" if width.present?
+      img["style"] = [img["style"], *styles].compact.join("; ")
+    end
+
+    fragment.css("figure").each do |figure|
+      image = figure.at_css("img")
+      image ? figure.replace(image) : figure.remove
+    end
+
+    fragment.to_html
+  end
+
+  private
+
+  def blob_from(src)
+    signed_id = src.to_s[BLOB_PATH, 1]
+    return if signed_id.blank?
+
+    ActiveStorage::Blob.find_signed(signed_id)
+  rescue ActiveSupport::MessageVerifier::InvalidSignature, ActiveRecord::RecordNotFound
+    nil
+  end
+end