diff --git a/.github/workflows/plugin-tests.yml b/.github/workflows/plugin-tests.yml
index 84e055ca..fcf1a1d0 100644
--- a/.github/workflows/plugin-tests.yml
+++ b/.github/workflows/plugin-tests.yml
@@ -7,7 +7,7 @@ on:
       - main
   pull_request:
   schedule:
-    - cron: '0 0 * * *'
+    - cron: '0 */12 * * *'
 
 jobs:
   build:
@@ -53,26 +53,27 @@ jobs:
           repository: discourse/discourse
           fetch-depth: 1
 
-      - run: echo "REPOSITORY_NAME=$(echo '${{ github.repository }}' | awk -F '/' '{print $2}')" >> $GITHUB_ENV
-        shell: bash
+      - name: Fetch Repo Name
+        id: repo-name
+        run: echo "::set-output name=value::$(echo '${{ github.repository }}' | awk -F '/' '{print $2}')"
 
       - name: Install plugin
         uses: actions/checkout@v2
         with:
-          path: plugins/${{ env.REPOSITORY_NAME }}
+          path: plugins/${{ steps.repo-name.outputs.value }}
           fetch-depth: 1
 
       - name: Check spec existence
         id: check_spec
         uses: andstor/file-existence-action@v1
         with:
-          files: "plugins/${{ env.REPOSITORY_NAME }}/spec"
+          files: "plugins/${{ steps.repo-name.outputs.value }}/spec"
 
       - name: Check qunit existence
         id: check_qunit
         uses: andstor/file-existence-action@v1
         with:
-          files: "plugins/${{ env.REPOSITORY_NAME }}/test/javascripts"
+          files: "plugins/${{ steps.repo-name.outputs.value }}/test/javascripts"
 
       - name: Setup Git
         run: |
@@ -105,7 +106,7 @@ jobs:
 
       - name: Lint English locale
         if: matrix.build_type == 'backend'
-        run: bundle exec ruby script/i18n_lint.rb "plugins/${{ env.REPOSITORY_NAME }}/locales/{client,server}.en.yml"
+        run: bundle exec ruby script/i18n_lint.rb "plugins/${{ steps.repo-name.outputs.value }}/locales/{client,server}.en.yml"
 
       - name: Get yarn cache directory
         id: yarn-cache-dir
@@ -130,9 +131,9 @@ jobs:
 
       - name: Plugin RSpec with Coverage
         if: matrix.build_type == 'backend' && steps.check_spec.outputs.files_exists == 'true'
-        run: SIMPLECOV=1 bin/rake plugin:spec[${{ env.REPOSITORY_NAME }}]
+        run: SIMPLECOV=1 bin/rake plugin:spec[${{ steps.repo-name.outputs.value }}]
 
       - name: Plugin QUnit
         if: matrix.build_type == 'frontend' && steps.check_qunit.outputs.files_exists == 'true'
-        run: bundle exec rake plugin:qunit['${{ env.REPOSITORY_NAME }}','1200000']
+        run: bundle exec rake plugin:qunit['${{ steps.repo-name.outputs.value }}','1200000']
         timeout-minutes: 30
diff --git a/assets/javascripts/discourse/templates/admin-wizards-logs.hbs b/assets/javascripts/discourse/templates/admin-wizards-logs.hbs
index 18fd3fdb..b0dd3de6 100644
--- a/assets/javascripts/discourse/templates/admin-wizards-logs.hbs
+++ b/assets/javascripts/discourse/templates/admin-wizards-logs.hbs
@@ -3,7 +3,7 @@
 
   {{d-button
     label="refresh"
-    icon="refresh"
+    icon="sync"
     action="refresh"
     class="refresh"}}
 </div>
diff --git a/assets/javascripts/wizard-custom.js b/assets/javascripts/wizard-custom.js
index 5d18328f..8b30ad94 100644
--- a/assets/javascripts/wizard-custom.js
+++ b/assets/javascripts/wizard-custom.js
@@ -1,43 +1,4 @@
-//= require discourse/app/lib/autocomplete
-//= require discourse/app/lib/utilities
-//= require discourse/app/lib/offset-calculator
-//= require discourse/app/lib/lock-on
-//= require discourse/app/lib/text-direction
-//= require discourse/app/lib/to-markdown
-//= require discourse/app/lib/load-script
-//= require discourse/app/lib/url
-//= require discourse/app/lib/ajax
-//= require discourse/app/lib/ajax-error
-//= require discourse/app/lib/page-visible
-//= require discourse/app/lib/logout
-//= require discourse/app/lib/render-tag
-//= require discourse/app/lib/notification-levels
-//= require discourse/app/lib/computed
-//= require discourse/app/lib/user-search
-//= require discourse/app/lib/text
-//= require discourse/app/lib/formatter
-//= require discourse/app/lib/quote
-//= require discourse/app/lib/link-mentions
-//= require discourse/app/lib/link-hashtags
-//= require discourse/app/lib/category-hashtags
-//= require discourse/app/lib/tag-hashtags
-//= require discourse/app/lib/uploads
-//= require discourse/app/lib/category-tag-search
-//= require discourse/app/lib/intercept-click
-//= require discourse/app/lib/show-modal
-//= require discourse/app/lib/key-value-store
-//= require discourse/app/lib/settings
-//= require discourse/app/lib/user-presence
-//= require discourse/app/lib/hash
-//= require discourse/app/lib/bookmark
-//= require discourse/app/lib/put-cursor-at-end
-//= require discourse/app/lib/safari-hacks
-//= require discourse/app/lib/preload-store
-//= require discourse/app/lib/topic-fancy-title
-//= require discourse/app/lib/cookie
-//= require discourse/app/lib/public-js-versions
-//= require discourse/app/lib/load-oneboxes
-//= require discourse/app/lib/highlight-syntax
+//= require_tree_discourse discourse/app/lib
 
 //= require discourse/app/mixins/singleton
 //= require discourse/app/mixins/upload
@@ -46,35 +7,7 @@
 
 //= require message-bus
 
-//= require discourse/app/models/login-method
-//= require discourse/app/models/permission-type
-//= require discourse/app/models/archetype
-//= require discourse/app/models/rest
-//= require discourse/app/models/site
-//= require discourse/app/models/category
-//= require discourse/app/models/session
-//= require discourse/app/models/post-action-type
-//= require discourse/app/models/trust-level
-//= require discourse/app/models/store
-//= require discourse/app/models/result-set
-//= require discourse/app/models/bookmark
-//= require discourse/app/models/user
-//= require discourse/app/models/user-stream
-//= require discourse/app/models/user-action
-//= require discourse/app/models/user-action-group
-//= require discourse/app/models/user-posts-stream
-//= require discourse/app/models/badge
-//= require discourse/app/models/badge-grouping
-//= require discourse/app/models/user-badge
-//= require discourse/app/models/topic
-//= require discourse/app/models/action-summary
-//= require discourse/app/models/user-action-stat
-//= require discourse/app/models/user-drafts-stream
-//= require discourse/app/models/user-draft
-//= require discourse/app/models/composer
-//= require discourse/app/models/draft
-//= require discourse/app/models/group
-//= require discourse/app/models/group-history
+//= require_tree_discourse discourse/app/models
 
 //= require discourse/app/helpers/category-link
 //= require discourse/app/helpers/user-avatar
diff --git a/assets/javascripts/wizard/components/wizard-date-input.js.es6 b/assets/javascripts/wizard/components/wizard-date-input.js.es6
index 93c7ed2d..bb11b655 100644
--- a/assets/javascripts/wizard/components/wizard-date-input.js.es6
+++ b/assets/javascripts/wizard/components/wizard-date-input.js.es6
@@ -1,3 +1,42 @@
 import DateInput from "discourse/components/date-input";
+import loadScript from "discourse/lib/load-script";
+import discourseComputed from "discourse-common/utils/decorators";
+import I18n from "I18n";
+/* global Pikaday:true */
 
-export default DateInput.extend();
+export default DateInput.extend({
+  useNativePicker: false,
+
+  @discourseComputed()
+  placeholder() {
+    return this.format;
+  },
+
+  _loadPikadayPicker(container) {
+    return loadScript("/javascripts/pikaday.js").then(() => {
+      let defaultOptions = {
+        field: this.element.querySelector(".date-picker"),
+        container: container || this.element.querySelector(".picker-container"),
+        bound: container === null,
+        format: this.format,
+        firstDay: 1,
+        i18n: {
+          previousMonth: I18n.t("dates.previous_month"),
+          nextMonth: I18n.t("dates.next_month"),
+          months: moment.months(),
+          weekdays: moment.weekdays(),
+          weekdaysShort: moment.weekdaysShort(),
+        },
+        onSelect: (date) => this._handleSelection(date),
+      };
+
+      if (this.relativeDate) {
+        defaultOptions = Object.assign({}, defaultOptions, {
+          minDate: moment(this.relativeDate).toDate(),
+        });
+      }
+
+      return new Pikaday(Object.assign({}, defaultOptions, this._opts()));
+    });
+  },
+});
diff --git a/assets/javascripts/wizard/lib/wizard-i18n.js.es6 b/assets/javascripts/wizard/lib/wizard-i18n.js.es6
index 17242e58..fdefab77 100644
--- a/assets/javascripts/wizard/lib/wizard-i18n.js.es6
+++ b/assets/javascripts/wizard/lib/wizard-i18n.js.es6
@@ -1,7 +1,10 @@
 import I18n from "I18n";
 
 const getThemeId = () => {
-  let themeId = parseInt($("meta[name=discourse_theme_ids]")[0].content, 10);
+  let themeId = parseInt(
+    document.querySelector("meta[name=discourse_theme_id]").content,
+    10
+  );
 
   if (!isNaN(themeId)) {
     return themeId.toString();
diff --git a/assets/javascripts/wizard/templates/components/wizard-field-date.hbs b/assets/javascripts/wizard/templates/components/wizard-field-date.hbs
index 4ac6571b..ed4d14e3 100644
--- a/assets/javascripts/wizard/templates/components/wizard-field-date.hbs
+++ b/assets/javascripts/wizard/templates/components/wizard-field-date.hbs
@@ -2,4 +2,5 @@
   date=date
   onChange=(action "onChange")
   tabindex=field.tabindex
+  format=field.format
 }}
diff --git a/controllers/custom_wizard/wizard.rb b/controllers/custom_wizard/wizard.rb
index fd93ef15..e0cf669d 100644
--- a/controllers/custom_wizard/wizard.rb
+++ b/controllers/custom_wizard/wizard.rb
@@ -6,7 +6,7 @@ class CustomWizard::WizardController < ::ApplicationController
 
   before_action :ensure_plugin_enabled
   helper_method :wizard_page_title
-  helper_method :wizard_theme_ids
+  helper_method :wizard_theme_id
   helper_method :wizard_theme_lookup
   helper_method :wizard_theme_translations_lookup
 
@@ -20,16 +20,16 @@ class CustomWizard::WizardController < ::ApplicationController
     wizard ? (wizard.name || wizard.id) : I18n.t('wizard.custom_title')
   end
 
-  def wizard_theme_ids
-    wizard ? [wizard.theme_id] : nil
+  def wizard_theme_id
+    wizard ? wizard.theme_id : nil
   end
 
   def wizard_theme_lookup(name)
-    Theme.lookup_field(wizard_theme_ids, mobile_view? ? :mobile : :desktop, name)
+    Theme.lookup_field(wizard_theme_id, mobile_view? ? :mobile : :desktop, name)
   end
 
   def wizard_theme_translations_lookup
-    Theme.lookup_field(wizard_theme_ids, :translations, I18n.locale)
+    Theme.lookup_field(wizard_theme_id, :translations, I18n.locale)
   end
 
   def index
diff --git a/lib/custom_wizard/exceptions/exceptions.rb b/lib/custom_wizard/exceptions/exceptions.rb
new file mode 100644
index 00000000..b5014d27
--- /dev/null
+++ b/lib/custom_wizard/exceptions/exceptions.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+module CustomWizard
+  class SprocketsFileNotFound < StandardError; end
+  class SprocketsEmptyPath < StandardError; end
+end
diff --git a/lib/custom_wizard/validators/update.rb b/lib/custom_wizard/validators/update.rb
index d84b448a..93d4955f 100644
--- a/lib/custom_wizard/validators/update.rb
+++ b/lib/custom_wizard/validators/update.rb
@@ -52,7 +52,7 @@ class ::CustomWizard::UpdateValidator
       @updater.errors.add(field_id, I18n.t('wizard.field.invalid_file', label: label, types: file_types))
     end
 
-    if ['date', 'date_time'].include?(type) && value.present? && !validate_date(value)
+    if ['date', 'date_time'].include?(type) && value.present? && !validate_date(value, format)
       @updater.errors.add(field_id, I18n.t('wizard.field.invalid_date'))
     end
 
@@ -88,13 +88,8 @@ class ::CustomWizard::UpdateValidator
       .include?(File.extname(value['original_filename'])[1..-1])
   end
 
-  def validate_date(value)
-    begin
-      Date.parse(value)
-      true
-    rescue ArgumentError
-      false
-    end
+  def validate_date(value, format)
+    v8.eval("moment('#{value}', '#{format}', true).isValid()")
   end
 
   def validate_time(value)
@@ -126,4 +121,12 @@ class ::CustomWizard::UpdateValidator
   def standardise_boolean(value)
     ActiveRecord::Type::Boolean.new.cast(value)
   end
+
+  def v8
+    return @ctx if @ctx
+
+    @ctx = PrettyText.v8
+    PrettyText.ctx_load(@ctx, "#{Rails.root}/vendor/assets/javascripts/moment.js")
+    @ctx
+  end
 end
diff --git a/plugin.rb b/plugin.rb
index b335971c..f6342f3f 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -35,6 +35,22 @@ if respond_to?(:register_svg_icon)
   register_svg_icon "save"
 end
 
+class ::Sprockets::DirectiveProcessor
+  def process_require_tree_discourse_directive(path = ".")
+    raise CustomWizard::SprocketsEmptyPath, "path cannot be empty" if path == "."
+
+    discourse_asset_path = "#{Rails.root}/app/assets/javascripts/"
+    path = File.expand_path(path, discourse_asset_path)
+    stat = @environment.stat(path)
+
+    if stat && stat.directory?
+      require_paths(*@environment.stat_sorted_tree_with_dependencies(path))
+    else
+      raise CustomWizard::SprocketsFileNotFound, "#{path} not found in discourse core"
+    end
+  end
+end
+
 after_initialize do
   %w[
     ../lib/custom_wizard/engine.rb
@@ -74,6 +90,7 @@ after_initialize do
     ../lib/custom_wizard/api/endpoint.rb
     ../lib/custom_wizard/api/log_entry.rb
     ../lib/custom_wizard/liquid_extensions/first_non_empty.rb
+    ../lib/custom_wizard/exceptions/exceptions.rb
     ../serializers/custom_wizard/api/authorization_serializer.rb
     ../serializers/custom_wizard/api/basic_endpoint_serializer.rb
     ../serializers/custom_wizard/api/endpoint_serializer.rb
diff --git a/serializers/custom_wizard/wizard_serializer.rb b/serializers/custom_wizard/wizard_serializer.rb
index f858c195..7a162ba5 100644
--- a/serializers/custom_wizard/wizard_serializer.rb
+++ b/serializers/custom_wizard/wizard_serializer.rb
@@ -8,11 +8,11 @@ class CustomWizard::WizardSerializer < CustomWizard::BasicWizardSerializer
              :completed,
              :required,
              :permitted,
-             :uncategorized_category_id
+             :uncategorized_category_id,
+             :categories
 
   has_many :steps, serializer: ::CustomWizard::StepSerializer, embed: :objects
   has_one :user, serializer: ::BasicUserSerializer, embed: :objects
-  has_many :categories, serializer: ::BasicCategorySerializer, embed: :objects
   has_many :groups, serializer: ::BasicGroupSerializer, embed: :objects
 
   def completed
@@ -56,4 +56,8 @@ class CustomWizard::WizardSerializer < CustomWizard::BasicWizardSerializer
   def include_uncategorized_category_id?
     object.needs_categories
   end
+
+  def categories
+    object.categories.map { |c| c.to_h }
+  end
 end
diff --git a/spec/components/custom_wizard/update_validator_spec.rb b/spec/components/custom_wizard/update_validator_spec.rb
index 81212b4b..e7658d8c 100644
--- a/spec/components/custom_wizard/update_validator_spec.rb
+++ b/spec/components/custom_wizard/update_validator_spec.rb
@@ -132,4 +132,44 @@ describe CustomWizard::UpdateValidator do
       updater.errors.messages[:step_2_field_6].first
     ).to eq(nil)
   end
+
+  it 'validates date fields' do
+    @template[:steps][1][:fields][0][:format] = "DD-MM-YYYY"
+    CustomWizard::Template.save(@template)
+
+    updater = perform_validation('step_2', step_2_field_1: '13-11-2021')
+    expect(
+      updater.errors.messages[:step_2_field_1].first
+    ).to eq(nil)
+  end
+
+  it 'doesn\'t validate date field if the format is not respected' do
+    @template[:steps][1][:fields][0][:format] = "MM-DD-YYYY"
+    CustomWizard::Template.save(@template)
+
+    updater = perform_validation('step_2', step_2_field_1: '13-11-2021')
+    expect(
+      updater.errors.messages[:step_2_field_1].first
+    ).to eq(I18n.t('wizard.field.invalid_date'))
+  end
+
+  it 'validates date time fields' do
+    @template[:steps][1][:fields][2][:format] = "DD-MM-YYYY HH:mm:ss"
+    CustomWizard::Template.save(@template)
+
+    updater = perform_validation('step_2', step_2_field_3: '13-11-2021 09:15:00')
+    expect(
+      updater.errors.messages[:step_2_field_3].first
+    ).to eq(nil)
+  end
+
+  it 'doesn\'t validate date time field if the format is not respected' do
+    @template[:steps][1][:fields][2][:format] = "MM-DD-YYYY HH:mm:ss"
+    CustomWizard::Template.save(@template)
+
+    updater = perform_validation('step_2', step_2_field_3: '13-11-2021 09:15')
+    expect(
+      updater.errors.messages[:step_2_field_3].first
+    ).to eq(I18n.t('wizard.field.invalid_date'))
+  end
 end
diff --git a/spec/extensions/sprockets_directive_spec.rb b/spec/extensions/sprockets_directive_spec.rb
new file mode 100644
index 00000000..5a074040
--- /dev/null
+++ b/spec/extensions/sprockets_directive_spec.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+require_relative '../plugin_helper'
+
+describe "Sprockets: require_tree_discourse directive" do
+  let(:discourse_asset_path) {
+    "#{Rails.root}/app/assets/javascripts/"
+  }
+  let(:fixture_asset_path) {
+    "#{Rails.root}/plugins/discourse-custom-wizard/spec/fixtures/sprockets/"
+  }
+  let(:test_file_contents) {
+    "console.log('hello')"
+  }
+  let(:resolved_file_contents) {
+    File.read(
+     "#{Rails.root}/plugins/discourse-custom-wizard/spec/fixtures/sprockets/resolved_js_file_contents.txt"
+    )
+  }
+
+  before do
+    @env ||= Sprockets::Environment.new
+    discourse_asset_path = "#{Rails.root}/app/assets/javascripts/"
+    fixture_asset_path = "#{Rails.root}/plugins/discourse-custom-wizard/spec/fixtures/sprockets/"
+    @env.append_path(discourse_asset_path)
+    @env.append_path(fixture_asset_path)
+    @env.cache = {}
+  end
+
+  def create_tmp_folder_and_run(path, file_contents, &block)
+    dir = File.dirname(path)
+    unless File.directory?(dir)
+      FileUtils.mkdir_p(dir)
+    end
+
+    File.new(path, 'w')
+    File.write(path, file_contents)
+    yield block if block_given?
+    FileUtils.rm_r(dir)
+  end
+
+  it "includes assets from the discourse core" do
+    create_tmp_folder_and_run("#{discourse_asset_path}/sptest/test.js", test_file_contents) do
+      expect(@env.find_asset("require_tree_discourse_test.js").to_s).to eq(resolved_file_contents)
+    end
+  end
+
+  it "throws ArgumentError if path is empty" do
+    expect { @env.find_asset("require_tree_discourse_empty.js") }.to raise_error(CustomWizard::SprocketsEmptyPath).with_message("path cannot be empty")
+  end
+
+  it "throws ArgumentError if path is non non-existent" do
+    expect { @env.find_asset("require_tree_discourse_non_existant.js") }.to raise_error(CustomWizard::SprocketsFileNotFound)
+  end
+end
diff --git a/spec/fixtures/sprockets/require_tree_discourse_empty.js b/spec/fixtures/sprockets/require_tree_discourse_empty.js
new file mode 100644
index 00000000..df264ec5
--- /dev/null
+++ b/spec/fixtures/sprockets/require_tree_discourse_empty.js
@@ -0,0 +1 @@
+//= require_tree_discourse 
\ No newline at end of file
diff --git a/spec/fixtures/sprockets/require_tree_discourse_non_existant.js b/spec/fixtures/sprockets/require_tree_discourse_non_existant.js
new file mode 100644
index 00000000..d9b2be76
--- /dev/null
+++ b/spec/fixtures/sprockets/require_tree_discourse_non_existant.js
@@ -0,0 +1 @@
+//= require_tree_discourse dummy_path
\ No newline at end of file
diff --git a/spec/fixtures/sprockets/require_tree_discourse_test.js b/spec/fixtures/sprockets/require_tree_discourse_test.js
new file mode 100644
index 00000000..a86aa0d7
--- /dev/null
+++ b/spec/fixtures/sprockets/require_tree_discourse_test.js
@@ -0,0 +1 @@
+//= require_tree_discourse sptest
\ No newline at end of file
diff --git a/spec/fixtures/sprockets/resolved_js_file_contents.txt b/spec/fixtures/sprockets/resolved_js_file_contents.txt
new file mode 100644
index 00000000..53e2cfa2
--- /dev/null
+++ b/spec/fixtures/sprockets/resolved_js_file_contents.txt
@@ -0,0 +1,3 @@
+eval("define(\"sptest/test\", [], function () {\n  \"use strict\";\n\n  console.log('hello');\n});" + "\n//# sourceURL=sptest/test");
+;
+eval("" + "\n//# sourceURL=require_tree_discourse_test");
diff --git a/views/layouts/wizard.html.erb b/views/layouts/wizard.html.erb
index efa09734..16d119b7 100644
--- a/views/layouts/wizard.html.erb
+++ b/views/layouts/wizard.html.erb
@@ -4,8 +4,8 @@
 
     <%= discourse_stylesheet_link_tag :wizard, theme_id: nil %>
     <%= discourse_stylesheet_link_tag :wizard_custom %>
-    <%- if wizard_theme_ids.present? %>
-      <%= discourse_stylesheet_link_tag (mobile_view? ? :mobile_theme : :desktop_theme), theme_ids: wizard_theme_ids %>
+    <%- if wizard_theme_id.present? %>
+      <%= discourse_stylesheet_link_tag (mobile_view? ? :mobile_theme : :desktop_theme), theme_id: wizard_theme_id %>
     <%- end %>
 
     <%= preload_script "locales/#{I18n.locale}" %>
@@ -29,7 +29,7 @@
 
     <%= tag.meta id: 'data-discourse-setup', data: client_side_setup_data %>
 
-    <meta name="discourse_theme_ids" content="<%= wizard_theme_ids&.join(",") %>">
+    <meta name="discourse_theme_id" content="<%= wizard_theme_id %>">
     <meta name="discourse-base-uri" content="<%= Discourse.base_path %>">
 
     <%= render partial: "layouts/head" %>