Refactor micropub specific things out to a slice

slices/micropub/queries/posts/microformat_post.rb

@@ -0,0 +1,37 @@
+require "reverse_markdown"
+
+module Micropub
+  module Queries
+    module Posts
+      class MicroformatPost
+        include Deps["repos.post_repo"]
+
+        def call(url:, properties:)
+          slug = URI(url).path.split("/").last
+
+          post = post_repo.fetch_unpublished!(slug)
+          markdown_content = ReverseMarkdown.convert(post.content, unknown_tags: :pass_through, github_flavored: true).to_s
+
+          if properties.nil? || properties.empty?
+            return {
+              type: ["h-entry"],
+              properties: {
+                published: [post.published_at],
+                content: [markdown_content],
+                photo: post.photos,
+                category: post.tags.map { |t| t.label.to_s }
+              }
+            }
+          end
+
+          result = {properties: {}}
+          result[:properties][:published] = [post.published_at] if properties.include? "published"
+          result[:properties][:content] = [markdown_content] if properties.include? "content"
+          result[:properties][:category] = post.tags.map { |t| t.label.to_s } if properties.include? "category"
+          result[:properties][:photos] = post.photos if properties.include? "photos"
+          result
+        end
+      end
+    end
+  end
+end