wip: Hackily added the ability to live-reload stylesheets in static mode.

Author: phillmv

app/controllers/static_site/entries_controller.rb

@@ -10,7 +10,7 @@ def show
         serve_blob(blob)
 
       elsif @entry.manifest?
-        render plain: @entry.body
+        render plain: @entry.render_stylesheet!, content_type: 'text/css'
 
       # TODO: make up my mind on how to handle templates.
       # elsif @entry.template?

app/models/ad_hoc_markdown_importer.rb

@@ -103,7 +103,6 @@ def entry_attributes_from_document(identifier, file_path)
     if identifier == "stylesheets/application.css.scss"
       # TODO: should this also be a "template"? doesn't super matter.
       entry_kind = :manifest
-      entry_body = File.read(file_path)
     elsif identifier =~ /\.erb$/
       # idea is that templates are rendered from within context of a
       # controller, which is too painful to setup here
@@ -140,29 +139,15 @@ def process_templates(notebook)
     # if there is a stylesheets/application.css.scss we want to render the
     # Sass and convert it to a stylesheets/application.css
     if stylesheet = notebook.entries.manifests.find_by(identifier: "stylesheets/application.css.scss")
-      load_path = File.join(notebook.import_path, "stylesheets")
-
-      rendered_css = SassC::Engine.new(stylesheet.body, {
-        filename: "application.css.scss",
-        syntax: :scss,
-        load_paths: [load_path],
-      }).render
-
       # there can only be ONE application.css
       if to_delete = notebook.entries.find_by(identifier: "stylesheets/application.css")
         puts "Destroying extraneous stylesheets/application.css, so it can be replaced."
         to_delete.destroy
       end
 
-      rendered_stylesheet = notebook.entries.new(stylesheet.export_attributes)
-      rendered_stylesheet.identifier = "stylesheets/application.css"
-      rendered_stylesheet.kind = :document
-      rendered_stylesheet.save!
-
-      blob = ActiveStorage::Blob.create_and_upload!(io: StringIO.new(rendered_css),
-                                                    filename: "application.css")
-      blob.analyze
-      rendered_stylesheet.files.create(blob_id: blob.id, created_at: blob.created_at)
+      stylesheet.identifier = "stylesheets/application.css"
+      stylesheet.render_stylesheet!
+      stylesheet.save
     end
   end
 

app/models/entry.rb

@@ -442,4 +442,28 @@ def self.accepted_attributes
      "state",
      "hide"]
   end
+
+  # ---- hack
+  SCSS_MANIFEST = "application.css.scss"
+  def render_stylesheet!
+    if self.manifest?
+      load_path = File.join(parent_notebook.import_path, "stylesheets")
+      manifest_path = File.join(load_path, SCSS_MANIFEST)
+
+      if File.exist?(manifest_path)
+        if body.nil? || File.mtime(manifest_path) > updated_at
+          rendered_css = SassC::Engine.new(File.read(manifest_path), {
+            filename: SCSS_MANIFEST,
+            syntax: :scss,
+            load_paths: [load_path],
+          }).render
+
+          self.body = rendered_css
+          self.save!
+        end
+      end
+    end
+
+    self.body
+  end
 end