store post view counts in reportbooru/fetch view counts from reportbooru #2128

app/assets/javascripts/posts.js

@@ -25,6 +25,7 @@
       this.initialize_post_image_resize_links();
       this.initialize_post_image_resize_to_window_link();
       this.initialize_similar();
+      this.initialize_view_count();
 
       if (Danbooru.meta("always-resize-images") === "true") {
         $("#image-resize-to-window-link").click();
@@ -529,6 +530,25 @@
       }
     });
   }
+
+  Danbooru.Post.initialize_view_count = function() {
+    if ($("#views-for-post").length) {
+      $("#views-for-post-li").hide();
+      var current_post_id = $("meta[name=post-id]").attr("content");
+      $.ajax({
+        url: Danbooru.meta("report-server") + "/hits/pv-" + current_post_id, 
+        success: function(data) {
+          $("#views-for-post").html(data);
+          $("#views-for-post-li").show();
+        },
+        dataType: "text"
+      });
+    }
+  }
+
+  Danbooru.Post.set_view_count = function(count) {
+    $("#views-for-post").html(count);
+  }
 })();
 
 $(document).ready(function() {

app/helpers/posts_helper.rb

@@ -1,4 +1,20 @@
 module PostsHelper
+  def post_view_count_js
+    return nil unless Danbooru.config.enable_view_counts
+    
+    if action_name == "index"
+      return nil
+    elsif action_name == "show"
+      key = "show-#{params[:id]}"
+      value = session.id
+      digest = OpenSSL::Digest.new("sha256")
+      sig = OpenSSL::HMAC.hexdigest(digest, Danbooru.config.shared_remote_key, "#{key},#{value}")
+      return render("posts/partials/show/view_count", key: key, value: value, sig: sig)
+    end
+
+    return nil
+  end
+
   def resize_image_links(post, user)
     links = []
 

app/views/posts/partials/show/_information.html.erb

@@ -14,6 +14,9 @@
   <li>Source: <%= post_source_tag(post) %></li>
   <li>Rating: <%= post.pretty_rating %></li>
   <li>Score: <span id="score-for-post-<%= post.id %>"><%= post.score %></span> <% if CurrentUser.is_gold? %>(<span id="vote-links-for-post-<%= post.id %>">vote <%= link_to "up", post_votes_path(:post_id => post.id, :score => "up"), :remote => true, :method => :post %>/<%= link_to "down", post_votes_path(:post_id => post.id, :score => "down"), :remote => true, :method => :post %></span><%= link_to "unvote", unvote_post_path(post), :remote => true, :method => :put, :id => "unvote-link-for-post-#{post.id}", :class => "unvote-post-link" %>)<% end %></li>
+  <% if Danbooru.config.enable_view_counts %>
+    <li id="views-for-post-li">Views: <span id="views-for-post"><em>loading...</em></span></li>
+  <% end %>
   <li>Favorites: <span id="favcount-for-post-<%= post.id %>"><%= post.fav_count %></span>
   <% if CurrentUser.is_gold? %>
     <%= link_to "Show &raquo;".html_safe, "#", :id => "show-favlist-link" %>

app/views/posts/partials/show/_view_count.html.erb

@@ -0,0 +1,9 @@
+<script type="text/javascript">
+  $(function() {
+    $.post("<%= Danbooru.config.report_server %>/hits", {
+      key: "<%= key %>",
+      value: "<%= value %>",
+      sig: "<%= sig %>"
+    });
+  });
+</script>

app/views/posts/show.html.erb

@@ -139,6 +139,8 @@
   </div>
 </div>
 
+<%= post_view_count_js %>
+
 <% content_for(:page_title) do %>
   <%= @post.presenter.humanized_essential_tag_string %> - <%= Danbooru.config.app_name %>
 <% end %>
@@ -158,6 +160,10 @@
   <meta property="og:description" content="<%= @post.presenter.humanized_tag_string %>">
   <meta property="og:image" content="http://<%= Danbooru.config.hostname %><%= @post.large_file_url %>">
 
+  <% if Danbooru.config.enable_view_counts %>
+    <meta name="report-server" content="<%= Danbooru.config.report_server %>">
+  <% end %>
+
   <!-- Twitter properties -->
   <% if @post.twitter_card_supported? %>
     <meta name="twitter:card" content="photo">

config/danbooru_default_config.rb

@@ -347,5 +347,17 @@ module Danbooru
 
     def twitter_api_secret
     end
+
+    def shared_remote_key
+      "blah blah blah blah blah blah"
+    end
+
+    def report_server
+      "https://isshiki.donmai.us"
+    end
+
+    def enable_view_counts
+      false
+    end
   end
 end