#45 API ぼちぼち

backend/app/controllers/wiki_pages_controller.rb

@@ -49,4 +49,22 @@ class WikiPagesController < ApplicationController
 
     render json: q.limit(20)
   end
+
+  def changes
+    id = params[:id]
+    log = id.present? ? wiki.page("#{ id }.md").versions : wiki.repo.log('main', nil, max_count: 50)
+    render json: log.map { |commit|
+        { sha:        commit.id,
+          author:     commit.author.name,
+          message:    commit.message,
+          timestamp:  commit.authored_date } }
+  end
+
+  private
+
+  WIKI_PATH = Rails.root.join('wiki').to_s
+
+  def wiki
+    @wiki ||= Gollum::Wiki.new(WIKI_PATH)
+  end
 end