FEATURE: allow users to dismiss unread posts

app/assets/javascripts/discourse/controllers/discovery/topics.js.es6

@@ -71,11 +71,17 @@ export default Discourse.DiscoveryController.extend({
       });
     },
 
-    dismissRead: function() {
+    dismissRead: function(operationType) {
       var self = this,
           selected = this.get('selected'),
-          operation = { type: 'change_notification_level',
+          operation;
+
+      if(operationType === "posts"){
+        operation = { type: 'dismiss_posts' };
+      } else {
+        operation = { type: 'change_notification_level',
                         notification_level_id: Discourse.Topic.NotificationLevel.REGULAR };
+      }
 
       var promise;
       if (selected.length > 0) {

app/assets/javascripts/discourse/templates/discovery/topics.js.handlebars

@@ -2,7 +2,8 @@
 {{#if showDismissAtTop}}
 <div class="row">
 {{#if showDismissRead}}
-  <button class='btn dismiss-read' {{action dismissRead}}>{{i18n topics.bulk.dismiss_read}}</button>
+  <button title="{{i18n topics.bulk.dismiss_topics_tooltip}}" class='btn dismiss-read' {{action dismissRead "topics"}}>{{i18n topics.bulk.dismiss_topics}}</button>
+  <button title="{{i18n topics.bulk.dismiss_posts_tooltip}}" class='btn dismiss-read' {{action dismissRead "posts"}}>{{i18n topics.bulk.dismiss_posts}}</button>
 {{/if}}
 {{#if showResetNew}}
   <button class='btn dismiss-read' {{action resetNew}}>{{i18n topics.bulk.dismiss_new}}</button>
@@ -89,7 +90,8 @@
   {{/if}}
   {{#if allLoaded}}
     {{#if showDismissRead}}
-      <button class='btn dismiss-read' {{action dismissRead}}>{{i18n topics.bulk.dismiss_read}}</button>
+      <button title="{{i18n topics.bulk.dismiss_topics_tooltip}}" class='btn dismiss-read' {{action dismissRead "topics"}}>{{i18n topics.bulk.dismiss_topics}}</button>
+      <button title="{{i18n topics.bulk.dismiss_posts_tooltip}}" class='btn dismiss-read' {{action dismissRead "posts"}}>{{i18n topics.bulk.dismiss_posts}}</button>
     {{/if}}
     {{#if showResetNew}}
       <button class='btn dismiss-read' {{action resetNew}}>{{i18n topics.bulk.dismiss_new}}</button>

app/assets/javascripts/discourse/templates/mobile/discovery/topics.js.handlebars

@@ -30,7 +30,8 @@
   {{/if}}
   {{#if allLoaded}}
     {{#if showDismissRead}}
-      <button class='btn dismiss-read' {{action dismissRead}}>{{i18n topics.bulk.dismiss_read}}</button>
+      <button title="{{i18n topics.bulk.dismiss_topics_tooltip}}" class='btn dismiss-read' {{action dismissRead "topics"}}>{{i18n topics.bulk.dismiss_topics}}</button>
+      <button title="{{i18n topics.bulk.dismiss_posts_tooltip}}" class='btn dismiss-read' {{action dismissRead "posts"}}>{{i18n topics.bulk.dismiss_posts}}</button>
     {{/if}}
     {{#if showResetNew}}
       <button class='btn dismiss-read' {{action resetNew}}>{{i18n topics.bulk.dismiss_new}}</button>

app/assets/stylesheets/desktop/topic-list.scss

@@ -282,6 +282,7 @@
 button.dismiss-read {
   float: right;
   margin-bottom: 5px;
+  margin-left: 10px;
 }
 
 .category-notification-menu .dropdown-menu {

config/locales/client.en.yml

@@ -726,7 +726,10 @@ en:
     topics:
       bulk:
         reset_read: "Reset Read"
-        dismiss_read: "Dismiss Unread"
+        dismiss_posts: "Dismiss Posts"
+        dismiss_posts_tooltip: "Skip unread posts"
+        dismiss_topics: "Dismiss Topics"
+        dismiss_topics_tooltip: "Clear unread topics and reset tracking state to regular"
         dismiss_new: "Dismiss New"
         toggle: "toggle bulk selection of topics"
         actions: "Bulk Actions"

lib/topics_bulk_action.rb

@@ -8,7 +8,7 @@ class TopicsBulkAction
   end
 
   def self.operations
-    %w(change_category close change_notification_level reset_read)
+    %w(change_category close change_notification_level reset_read dismiss_posts)
   end
 
   def perform!
@@ -19,6 +19,18 @@ class TopicsBulkAction
 
   private
 
+    def dismiss_posts
+      sql = "
+      UPDATE topic_users tu
+      SET seen_post_count = t.posts_count , last_read_post_number = highest_post_number
+      FROM topics t
+      WHERE t.id = tu.topic_id AND tu.user_id = :user_id AND t.id IN (:topic_ids)
+      "
+
+      Topic.exec_sql(sql, user_id: @user.id, topic_ids: @topic_ids)
+      @changed_ids.concat @topic_ids
+    end
+
     def reset_read
       PostTiming.destroy_for(@user.id, @topic_ids)
     end

spec/components/topics_bulk_action_spec.rb

@@ -3,6 +3,19 @@ require_dependency 'topics_bulk_action'
 
 describe TopicsBulkAction do
 
+  describe "dismiss_posts" do
+    it "dismisses posts" do
+      post1 = create_post
+      create_post(topic_id: post1.topic_id)
+
+      TopicsBulkAction.new(post1.user, [post1.topic_id], type: 'dismiss_posts').perform!
+
+      tu = TopicUser.find_by(user_id: post1.user_id, topic_id: post1.topic_id)
+      tu.last_read_post_number.should == 2
+      tu.seen_post_count = 2
+    end
+  end
+
   describe "invalid operation" do
     let(:user) { Fabricate.build(:user) }