Feature: Mass award badge (#8694)

* UI: Mass grant a badge from the admin ui

* Send the uploaded CSV and badge ID to the backend

* Read the CSV and grant badge in batches

* UX: Communicate the result to the user

* Don't award if badge is disabled

* Create a 'send_notification' method to remove duplicated code, slightly shrink badge image. Replace router transition with href.

* Dynamically discover current route

app/assets/javascripts/admin/controllers/admin-badges-award.js.es6

@@ -0,0 +1,35 @@
+import Controller from "@ember/controller";
+import { ajax } from "discourse/lib/ajax";
+import { popupAjaxError } from "discourse/lib/ajax-error";
+
+export default Controller.extend({
+  saving: false,
+
+  actions: {
+    massAward() {
+      const file = document.querySelector("#massAwardCSVUpload").files[0];
+
+      if (this.model && file) {
+        const options = {
+          type: "POST",
+          processData: false,
+          contentType: false,
+          data: new FormData()
+        };
+
+        options.data.append("file", file);
+
+        this.set("saving", true);
+
+        ajax(`/admin/badges/award/${this.model.id}`, options)
+          .then(() => {
+            bootbox.alert(I18n.t("admin.badges.mass_award.success"));
+          })
+          .catch(popupAjaxError)
+          .finally(() => this.set("saving", false));
+      } else {
+        bootbox.alert(I18n.t("admin.badges.mass_award.aborted"));
+      }
+    }
+  }
+});

app/assets/javascripts/admin/controllers/admin-badges.js.es6

@@ -1,2 +1,18 @@
 import Controller from "@ember/controller";
-export default Controller.extend();
+import { inject as service } from "@ember/service";
+import discourseComputed from "discourse-common/utils/decorators";
+
+export default Controller.extend({
+  routing: service("-routing"),
+
+  @discourseComputed("routing.currentRouteName")
+  selectedRoute() {
+    const currentRoute = this.routing.currentRouteName;
+    const indexRoute = "adminBadges.index";
+    if (currentRoute === indexRoute) {
+      return "adminBadges.show";
+    } else {
+      return this.routing.currentRouteName;
+    }
+  }
+});

app/assets/javascripts/admin/routes/admin-badges-award.js.es6

@@ -0,0 +1,12 @@
+import Route from "discourse/routes/discourse";
+
+export default Route.extend({
+  model(params) {
+    if (params.badge_id !== "new") {
+      return this.modelFor("adminBadges").findBy(
+        "id",
+        parseInt(params.badge_id, 10)
+      );
+    }
+  }
+});

app/assets/javascripts/admin/routes/admin-route-map.js.es6

@@ -190,6 +190,7 @@ export default function() {
       "adminBadges",
       { path: "/badges", resetNamespace: true },
       function() {
+        this.route("award", { path: "/award/:badge_id" });
         this.route("show", { path: "/:badge_id" });
       }
     );

app/assets/javascripts/admin/templates/badges-award.hbs

@@ -0,0 +1,22 @@
+{{#d-section class="award-badge"}}
+  <form class="form-horizontal">
+    <h1>{{i18n 'admin.badges.mass_award.title'}}</h1>
+    <div class='badge-preview'>
+      {{#if model}}
+        {{icon-or-image model}}
+        <span class="badge-display-name">{{model.name}}</span>
+      {{else}}
+        <span class='badge-placeholder'>{{I18n 'admin.badges.mass_award.no_badge_selected'}}</span>
+      {{/if}}
+    </div>
+    <div>
+      <h4>{{I18n 'admin.badges.mass_award.upload_csv'}}</h4>
+      <input type='file' id='massAwardCSVUpload' accept='.csv' />
+    </div>
+    {{d-button
+        class="btn-primary"
+        action=(action 'massAward')
+        disabled=saving
+        label="admin.badges.save"}}
+  </form>
+{{/d-section}}

app/assets/javascripts/admin/templates/badges.hbs

@@ -6,13 +6,18 @@
         {{d-icon "plus"}}
         <span>{{i18n 'admin.badges.new'}}</span>
       {{/link-to}}
+      
+      {{#link-to 'adminBadges.award' 'new' class="btn btn-primary"}}
+        {{d-icon "certificate"}}
+        <span>{{i18n 'admin.badges.mass_award.button'}}</span>
+      {{/link-to}}
     </div>
   </div>
   <div class='content-list'>
     <ul class="admin-badge-list">
       {{#each model as |badge|}}
         <li class="admin-badge-list-item">
-          {{#link-to 'adminBadges.show' badge.id}}
+          {{#link-to selectedRoute badge.id}}
             {{badge-button badge=badge}}
             {{#if badge.newBadge}}
               <span class="list-badge">{{i18n 'filters.new.lower_title'}}</span>

app/assets/stylesheets/common/admin/badges.scss

@@ -119,6 +119,36 @@
   }
 }
 
+.award-badge {
+  margin: 15px 0 0 15px;
+  float: left;
+
+  .badge-preview {
+    min-height: 110px;
+    max-width: 300px;
+    display: flex;
+    align-items: center;
+    background-color: $primary-very-low;
+    border: 1px solid $primary-low;
+    padding: 0 10px 0 10px;
+
+    img,
+    svg {
+      width: 60px;
+      height: 60px;
+    }
+
+    .badge-display-name {
+      margin-left: 5px;
+    }
+
+    .badge-placeholder {
+      width: 100%;
+      text-align: center;
+    }
+  }
+}
+
 // badge-grouping modal
 .badge-groupings-modal {
   .badge-groupings {

app/controllers/admin/badges_controller.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'csv'
+
 class Admin::BadgesController < Admin::AdminController
 
   def index
@@ -33,6 +35,38 @@ class Admin::BadgesController < Admin::AdminController
   def show
   end
 
+  def award
+  end
+
+  def mass_award
+    csv_file = params.permit(:file).fetch(:file, nil)
+    badge = Badge.find_by(id: params[:badge_id])
+    raise Discourse::InvalidParameters if csv_file.try(:tempfile).nil? || badge.nil?
+
+    batch_number = 1
+    batch = []
+
+    File.open(csv_file) do |csv|
+      csv.each_line do |email_line|
+        batch.concat CSV.parse_line(email_line)
+
+        # Split the emails in batches of 200 elements.
+        full_batch = csv.lineno % (BadgeGranter::MAX_ITEMS_FOR_DELTA * batch_number) == 0
+        last_batch_item = full_batch || csv.eof?
+
+        if last_batch_item
+          Jobs.enqueue(:mass_award_badge, user_emails: batch, badge_id: badge.id)
+          batch = []
+          batch_number += 1
+        end
+      end
+    end
+
+    head :ok
+  rescue CSV::MalformedCSVError
+    raise Discourse::InvalidParameters
+  end
+
   def badge_types
     badge_types = BadgeType.all.to_a
     render_serialized(badge_types, BadgeTypeSerializer, root: "badge_types")

app/jobs/regular/mass_award_badge.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module Jobs
+  class MassAwardBadge < ::Jobs::Base
+    def execute(args)
+      badge = Badge.find_by(id: args[:badge_id])
+      users = User.select(:id, :username, :locale).with_email(args[:user_emails])
+
+      return if users.empty? || badge.nil?
+
+      BadgeGranter.mass_grant(badge, users)
+    end
+  end
+end

app/services/badge_granter.rb

@@ -12,6 +12,25 @@ class BadgeGranter
     BadgeGranter.new(badge, user, opts).grant
   end
 
+  def self.mass_grant(badge, users)
+    return unless badge.enabled?
+
+    system_user_id = Discourse.system_user.id
+    user_badges = users.map { |u| { badge_id: badge.id, user_id: u.id, granted_by_id: system_user_id, granted_at: Time.now } }
+    granted_badges = UserBadge.insert_all(user_badges, returning: %i[user_id])
+
+    users.each do |user|
+      notification = send_notification(user.id, user.username, user.locale, badge)
+
+      DB.exec(
+        "UPDATE user_badges SET notification_id = :notification_id WHERE notification_id IS NULL AND user_id = :user_id AND badge_id = :badge_id",
+        notification_id: notification.id,
+        user_id: user.id,
+        badge_id: badge.id
+      )
+    end
+  end
+
   def grant
     return if @granted_by && !Guardian.new(@granted_by).can_grant_badges?(@user)
     return unless @badge.enabled?
@@ -46,17 +65,9 @@ class BadgeGranter
 
         if SiteSetting.enable_badges?
           unless @badge.badge_type_id == BadgeType::Bronze && user_badge.granted_at < 2.days.ago
-            I18n.with_locale(@user.effective_locale) do
-              notification = @user.notifications.create(
-                notification_type: Notification.types[:granted_badge],
-                data: { badge_id: @badge.id,
-                        badge_name: @badge.display_name,
-                        badge_slug: @badge.slug,
-                        badge_title: @badge.allow_title,
-                        username: @user.username }.to_json
-              )
-              user_badge.update notification_id: notification.id
-            end
+            notification = self.class.send_notification(@user.id, @user.username, @user.effective_locale, @badge)
+
+            user_badge.update notification_id: notification.id
           end
         end
       end
@@ -331,29 +342,9 @@ class BadgeGranter
 
       # old bronze badges do not matter
       next if badge.badge_type_id == BadgeType::Bronze && row.granted_at < 2.days.ago
-
-      # Try to use user locale in the badge notification if possible without too much resources
-      notification_locale = if SiteSetting.allow_user_locale && row.locale.present?
-        row.locale
-      else
-        SiteSetting.default_locale
-      end
-
       next if row.staff && badge.awarded_for_trust_level?
 
-      notification = I18n.with_locale(notification_locale) do
-        Notification.create!(
-          user_id: row.user_id,
-          notification_type: Notification.types[:granted_badge],
-          data: {
-            badge_id: badge.id,
-            badge_name: badge.display_name,
-            badge_slug: badge.slug,
-            badge_title: badge.allow_title,
-            username: row.username
-          }.to_json
-        )
-      end
+      notification = send_notification(row.user_id, row.username, row.locale, badge)
 
       DB.exec(
         "UPDATE user_badges SET notification_id = :notification_id WHERE id = :id",
@@ -387,4 +378,23 @@ class BadgeGranter
     SQL
   end
 
+  def self.send_notification(user_id, username, locale, badge)
+    use_default_locale = !SiteSetting.allow_user_locale && locale.blank?
+    notification_locale = use_default_locale ? SiteSetting.default_locale : locale
+
+    I18n.with_locale(notification_locale) do
+      Notification.create!(
+        user_id: user_id,
+        notification_type: Notification.types[:granted_badge],
+        data: {
+          badge_id: badge.id,
+          badge_name: badge.display_name,
+          badge_slug: badge.slug,
+          badge_title: badge.allow_title,
+          username: username
+        }.to_json
+      )
+    end
+  end
+
 end

config/locales/client.en.yml

@@ -4493,6 +4493,13 @@ en:
           title: "Select an existing badge or create a new one to get started"
           what_are_badges_title: "What are badges?"
           badge_query_examples_title: "Badge query examples"
+        mass_award:
+          button: Award Badge
+          title: Award a badge to a group of users
+          no_badge_selected: No badge selected
+          upload_csv: Upload a CSV with user emails
+          aborted: Be sure you selected the badge you want to award and the csv file containing user emails
+          success: Badge awarding initiated, users will receive the selected badge soon.
 
       emoji:
         title: "Emoji"

config/routes.rb

@@ -295,6 +295,8 @@ Discourse::Application.routes.draw do
 
     resources :badges, constraints: AdminConstraint.new do
       collection do
+        get "/award/:badge_id" => "badges#award"
+        post "/award/:badge_id" => "badges#mass_award"
         get "types" => "badges#badge_types"
         post "badge_groupings" => "badges#save_badge_groupings"
         post "preview" => "badges#preview"

spec/fixtures/csv/user_emails.csv

@@ -0,0 +1,4 @@
+user1@test.com
+user2@test.com
+user3@test.com
+user4@test.com

spec/jobs/mass_award_badge_spec.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Jobs::MassAwardBadge do
+  describe '#execute' do
+    fab!(:badge) { Fabricate(:badge) }
+    fab!(:user) { Fabricate(:user) }
+
+    it 'creates the badge for an existing user' do
+      subject.execute(user_emails: [user.email], badge_id:  badge.id)
+
+      expect(UserBadge.where(user: user, badge: badge).exists?).to eq(true)
+    end
+
+    it 'works with multiple users' do
+      user_2 = Fabricate(:user)
+
+      subject.execute(user_emails: [user.email, user_2.email], badge_id:  badge.id)
+
+      expect(UserBadge.exists?(user: user, badge: badge)).to eq(true)
+      expect(UserBadge.exists?(user: user_2, badge: badge)).to eq(true)
+    end
+
+    it 'also creates a notification for the user' do
+      subject.execute(user_emails: [user.email], badge_id:  badge.id)
+
+      expect(Notification.exists?(user: user)).to eq(true)
+      expect(UserBadge.where.not(notification_id: nil).exists?(user: user, badge: badge)).to eq(true)
+    end
+  end
+end

spec/requests/admin/badges_controller_spec.rb

@@ -177,5 +177,38 @@ describe Admin::BadgesController do
         end
       end
     end
+
+    describe '#mass_award' do
+      it 'does nothing when there is no file' do
+        post "/admin/badges/award/#{badge.id}.json", params: { file: '' }
+
+        expect(response.status).to eq(400)
+      end
+
+      it 'does nothing when the badge id is not valid' do
+        post '/admin/badges/award/fake_id.json', params: { file: fixture_file_upload(Tempfile.new) }
+
+        expect(response.status).to eq(400)
+      end
+
+      it 'does nothing when the file is not a csv' do
+        file = file_from_fixtures('cropped.png')
+
+        post "/admin/badges/award/#{badge.id}.json", params: { file: fixture_file_upload(file) }
+
+        expect(response.status).to eq(400)
+      end
+
+      it 'creates the badge for an existing user' do
+        Jobs.run_immediately!
+
+        user = Fabricate(:user, email: 'user1@test.com')
+        file = file_from_fixtures('user_emails.csv', 'csv')
+
+        post "/admin/badges/award/#{badge.id}.json", params: { file: fixture_file_upload(file) }
+
+        expect(UserBadge.exists?(user: user, badge: badge)).to eq(true)
+      end
+    end
   end
 end