preview is unimplemented

server/harp_blog.rb

@@ -80,10 +80,18 @@ class HarpBlog
     read_post(File.join(year, month), id)
   end
 
+  def get_post_html(year, month, id)
+    raise 'unimplemented'
+  end
+
   def get_draft(id)
     read_post('drafts', id, draft: true)
   end
 
+  def get_draft_html(id)
+    raise 'unimplemented'
+  end
+
   def create_post(title, body, url, extra_fields = nil)
     if !title || title.strip.length == 0
       title = find_title(url)

server/harp_blog/post.rb

@@ -1,8 +1,8 @@
 require 'securerandom'
 
 class HarpBlog
-
   class Post
+
     PERSISTENT_FIELDS = %w[id author title date timestamp link url tags].map(&:to_sym)
     TRANSIENT_FIELDS = %w[time slug body draft].map(&:to_sym)
     FIELDS = PERSISTENT_FIELDS + TRANSIENT_FIELDS

server/server.rb

@@ -173,7 +173,7 @@ get '/posts/:year/:month/:id' do |year, month, id|
     elsif request.accept?('text/html')
       status 200
       headers 'Content-Type' => 'text/html'
-      blog.render_post(post.fields)
+      blog.get_post_html(year, month, id)
     else
       status 400
       "content not available in an acceptable format: #{request.accept.join(', ')}"
@@ -201,7 +201,7 @@ get '/drafts/:id' do |id|
     elsif request.accept?('text/html')
       status 200
       headers 'Content-Type' => 'text/html'
-      blog.render_post(post.fields)
+      blog.get_draft_html(id)
     else
       status 400
       "content not available in an acceptable format: #{request.accept.join(', ')}"