FEATURE: Option to update category preferences of all users when site setting changed (#8180)

app/assets/javascripts/admin/components/site-setting.js.es6

@@ -1,10 +1,54 @@
 import BufferedContent from "discourse/mixins/buffered-content";
 import SiteSetting from "admin/models/site-setting";
 import SettingComponent from "admin/mixins/setting-component";
+import showModal from "discourse/lib/show-modal";
+import AboutRoute from "discourse/routes/about";
 
 export default Ember.Component.extend(BufferedContent, SettingComponent, {
-  _save() {
+  update(key, value, updateExistingUsers = false) {
+    if (updateExistingUsers) {
+      return SiteSetting.update(key, value, { updateExistingUsers: true });
+    } else {
+      return SiteSetting.update(key, value);
+    }
+  },
+
+  _save(callback) {
+    const defaultCategoriesSettings = [
+      "default_categories_watching",
+      "default_categories_tracking",
+      "default_categories_muted",
+      "default_categories_watching_first_post"
+    ];
     const setting = this.buffered;
-    return SiteSetting.update(setting.get("setting"), setting.get("value"));
+    const key = setting.get("setting");
+    const value = setting.get("value");
+
+    if (defaultCategoriesSettings.includes(key)) {
+      AboutRoute.create()
+        .model()
+        .then(result => {
+          const controller = showModal("site-setting-default-categories", {
+            model: {
+              count: result.stats.user_count,
+              key: key.replace(/_/g, " ")
+            },
+            admin: true
+          });
+
+          controller.setProperties({
+            onClose: () => {
+              const updateExistingUsers = controller.get("updateExistingUsers");
+              if (updateExistingUsers === true) {
+                callback(this.update(key, value, true));
+              } else if (updateExistingUsers === false) {
+                callback(this.update(key, value));
+              }
+            }
+          });
+        });
+    } else {
+      callback(this.update(key, value));
+    }
   }
 });

app/assets/javascripts/admin/controllers/modals/site-setting-default-categories.js.es6

@@ -0,0 +1,19 @@
+import ModalFunctionality from "discourse/mixins/modal-functionality";
+
+export default Ember.Controller.extend(ModalFunctionality, {
+  onShow() {
+    this.set("updateExistingUsers", null);
+  },
+
+  actions: {
+    updateExistingUsers() {
+      this.set("updateExistingUsers", true);
+      this.send("closeModal");
+    },
+
+    cancel() {
+      this.set("updateExistingUsers", false);
+      this.send("closeModal");
+    }
+  }
+});

app/assets/javascripts/admin/mixins/setting-component.js.es6

@@ -111,7 +111,8 @@ export default Ember.Mixin.create({
 
   actions: {
     save() {
-      this._save()
+      this._save(result => {
+        result
           .then(() => {
             this.set("validationMessage", null);
             this.commitBuffer();
@@ -126,6 +127,7 @@ export default Ember.Mixin.create({
               this.set("validationMessage", I18n.t("generic_error"));
             }
           });
+      });
     },
 
     cancel() {

app/assets/javascripts/admin/models/site-setting.js.es6

@@ -25,9 +25,14 @@ SiteSetting.reopenClass({
     });
   },
 
-  update(key, value) {
+  update(key, value, opts = {}) {
     const data = {};
     data[key] = value;
+
+    if (opts["updateExistingUsers"] === true) {
+      data["updateExistingUsers"] = true;
+    }
+
     return ajax(`/admin/site_settings/${key}`, { type: "PUT", data });
   }
 });

app/assets/javascripts/admin/templates/modal/site-setting-default-categories.hbs

@@ -0,0 +1,8 @@
+{{#d-modal-body class="incoming-emails" rawTitle=model.key}}
+{{i18n "admin.site_settings.default_categories.modal_description" count=model.count}}
+{{/d-modal-body}}
+
+<div class="modal-footer">
+  {{d-button action=(action "updateExistingUsers") class='btn btn-primary' label='admin.site_settings.default_categories.modal_yes'}}
+  {{d-button action=(action "cancel") class='btn' label='admin.site_settings.default_categories.modal_no'}}
+</div>

app/controllers/admin/site_settings_controller.rb

@@ -20,7 +20,42 @@ class Admin::SiteSettingsController < Admin::AdminController
       value = Upload.find_by(url: value) || ''
     end
 
+    update_existing_users = params[:updateExistingUsers].present?
+    previous_category_ids = (SiteSetting.send(id) || "").split("|") if update_existing_users
+
     SiteSetting.set_and_log(id, value, current_user)
+
+    if update_existing_users
+      new_category_ids = (value || "").split("|")
+
+      case id
+      when "default_categories_watching"
+        notification_level = NotificationLevels.all[:watching]
+      when "default_categories_tracking"
+        notification_level = NotificationLevels.all[:tracking]
+      when "default_categories_muted"
+        notification_level = NotificationLevels.all[:muted]
+      when "default_categories_watching_first_post"
+        notification_level = NotificationLevels.all[:watching_first_post]
+      end
+
+      (previous_category_ids - new_category_ids).each do |category_id|
+        CategoryUser.where(category_id: category_id, notification_level: notification_level).delete_all
+      end
+
+      (new_category_ids - previous_category_ids).each do |category_id|
+        skip_user_ids = CategoryUser.where(category_id: category_id).pluck(:user_id)
+
+        User.where.not(id: skip_user_ids).select(:id).find_in_batches do |users|
+          category_users = []
+          users.each { |user| category_users << { category_id: category_id, user_id: user.id, notification_level: notification_level } }
+          CategoryUser.insert_all!(category_users)
+        end
+
+        CategoryUser.where(category_id: category_id, notification_level: notification_level).first_or_create!(notification_level: notification_level)
+      end
+    end
+
     render body: nil
   end
 

config/locales/client.en.yml

@@ -4304,6 +4304,10 @@ en:
           dashboard: "Dashboard"
         secret_list:
           invalid_input: "Input fields cannot be empty or contain vertical bar character."
+        default_categories:
+          modal_description: "Would you like to apply this change historically? This will change preferences for %{count} existing users."
+          modal_yes: "Yes"
+          modal_no: "No, only apply change going forward"
 
       badges:
         title: Badges

spec/requests/admin/site_settings_controller_spec.rb

@@ -53,6 +53,44 @@ describe Admin::SiteSettingsController do
         expect(SiteSetting.test_setting).to eq('')
       end
 
+      describe 'default categories' do
+        let(:user1) { Fabricate(:user) }
+        let(:user2) { Fabricate(:user) }
+        let(:watching) { NotificationLevels.all[:watching] }
+        let(:tracking) { NotificationLevels.all[:tracking] }
+
+        let(:category_ids) { 3.times.collect { Fabricate(:category).id } }
+
+        before do
+          SiteSetting.setting(:default_categories_watching, category_ids.first(2).join("|"))
+          CategoryUser.create!(category_id: category_ids.last, notification_level: tracking, user: user2)
+        end
+
+        after do
+          SiteSetting.setting(:default_categories_watching, "")
+        end
+
+        it 'should update existing users user preference' do
+          put "/admin/site_settings/default_categories_watching.json", params: {
+            default_categories_watching: category_ids.last(2).join("|"),
+            updateExistingUsers: true
+          }
+
+          expect(CategoryUser.where(category_id: category_ids.first, notification_level: watching).count).to eq(0)
+          expect(CategoryUser.where(category_id: category_ids.last, notification_level: watching).count).to eq(User.count - 1)
+        end
+
+        it 'should not update existing users user preference' do
+          expect {
+            put "/admin/site_settings/default_categories_watching.json", params: {
+              default_categories_watching: category_ids.last(2).join("|")
+            }
+          }.to change { CategoryUser.where(category_id: category_ids.first, notification_level: watching).count }.by(0)
+
+          expect(CategoryUser.where(category_id: category_ids.last, notification_level: watching).count).to eq(0)
+        end
+      end
+
       describe 'upload site settings' do
         it 'can remove the site setting' do
           SiteSetting.test_upload = Fabricate(:upload)