9 files changed, 38 insertions, 28 deletions
diff --git a/app/views/layouts/_theme.html.haml b/app/views/layouts/_theme.html.haml
new file mode 100644
index 000000000..066d9de42
--- /dev/null
+++ b/app/views/layouts/_theme.html.haml
@@ -0,0 +1,13 @@
+- if theme
+  - if theme[:pack] != 'common' && theme[:common]
+    = render partial: 'layouts/theme', object: theme[:common]
+  - if theme[:pack]
+    = javascript_pack_tag theme[:flavour] ? "flavours/#{theme[:flavour]}/#{theme[:pack]}" : "core/#{theme[:pack]}", integrity: true, crossorigin: 'anonymous'
+    - if theme[:skin]
+      - if !theme[:flavour] || theme[:skin] == 'default'
+        = stylesheet_pack_tag theme[:flavour] ? "flavours/#{theme[:flavour]}/#{theme[:pack]}" : "core/#{theme[:pack]}", integrity: true, media: 'all'
+      - else
+        = stylesheet_pack_tag "skins/#{theme[:flavour]}/#{theme[:skin]}/#{theme[:pack]}"
+    - if theme[:preload]
+      - theme[:preload].each do |link|
+        %link{ href: asset_pack_path("#{link}.js"), crossorigin: 'anonymous', rel: 'preload', as: 'script' }/
diff --git a/app/views/layouts/admin.html.haml b/app/views/layouts/admin.html.haml
index 083f2fac7..a0cb7c4fe 100644
--- a/app/views/layouts/admin.html.haml
+++ b/app/views/layouts/admin.html.haml
@@ -1,6 +1,3 @@
-- content_for :header_tags do
-  = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
-
 - content_for :content do
   .admin-wrapper
     .sidebar-wrapper
diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index 3d63dc0f3..34c25a7d1 100755
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -20,16 +20,22 @@
 
     %title= content_for?(:page_title) ? safe_join([yield(:page_title).chomp.html_safe, title], ' - ') : title
 
-    = stylesheet_pack_tag 'common', media: 'all'
-    = stylesheet_pack_tag current_theme, media: 'all'
-    = javascript_pack_tag 'common', integrity: true, crossorigin: 'anonymous'
-    = javascript_pack_tag "locale_#{I18n.locale}", integrity: true, crossorigin: 'anonymous'
+    = javascript_pack_tag "locales", integrity: true, crossorigin: 'anonymous'
+    - if @theme
+      - if @theme[:supported_locales].include? I18n.locale.to_s
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/#{I18n.locale}", integrity: true, crossorigin: 'anonymous'
+      - elsif @theme[:supported_locales].include? 'en'
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/en", integrity: true, crossorigin: 'anonymous'
     = csrf_meta_tags
 
+    = yield :header_tags
+
+    -#  These must come after :header_tags to ensure our initial state has been defined.
+    = render partial: 'layouts/theme', object: @core
+    = render partial: 'layouts/theme', object: @theme
+
     - if Setting.custom_css.present?
       = stylesheet_link_tag custom_css_path, media: 'all'
 
-    = yield :header_tags
-
   %body{ class: body_classes }
     = content_for?(:content) ? yield(:content) : yield
diff --git a/app/views/layouts/auth.html.haml b/app/views/layouts/auth.html.haml
index aa1990972..fcbd29fe9 100644
--- a/app/views/layouts/auth.html.haml
+++ b/app/views/layouts/auth.html.haml
@@ -1,6 +1,3 @@
-- content_for :header_tags do
-  = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
-
 - content_for :content do
   .container-alt
     .logo-container
diff --git a/app/views/layouts/embedded.html.haml b/app/views/layouts/embedded.html.haml
index 0503dcdc1..33e3714f8 100644
--- a/app/views/layouts/embedded.html.haml
+++ b/app/views/layouts/embedded.html.haml
@@ -10,10 +10,14 @@
     - if storage_host?
       %link{ rel: 'dns-prefetch', href: storage_host }/
 
-    = stylesheet_pack_tag 'common', media: 'all'
-    = stylesheet_pack_tag Setting.default_settings['theme'], media: 'all'
-    = javascript_pack_tag 'common', integrity: true, crossorigin: 'anonymous'
-    = javascript_pack_tag "locale_#{I18n.locale}", integrity: true, crossorigin: 'anonymous'
-    = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
+    = javascript_pack_tag "locales", integrity: true, crossorigin: 'anonymous'
+    - if @theme
+      - if @theme[:supported_locales].include? I18n.locale.to_s
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/#{I18n.locale}", integrity: true, crossorigin: 'anonymous'
+      - elsif @theme[:supported_locales].include? 'en'
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/en", integrity: true, crossorigin: 'anonymous'
+    = render partial: 'layouts/theme', object: @core
+    = render partial: 'layouts/theme', object: @theme
+
   %body.embed
     = yield
diff --git a/app/views/layouts/error.html.haml b/app/views/layouts/error.html.haml
index 25c85abf9..f8315afb5 100644
--- a/app/views/layouts/error.html.haml
+++ b/app/views/layouts/error.html.haml
@@ -5,10 +5,9 @@
     %meta{ charset: 'utf-8' }/
     %title= safe_join([yield(:page_title), Setting.default_settings['site_title']], ' - ')
     %meta{ content: 'width=device-width,initial-scale=1', name: 'viewport' }/
-    = stylesheet_pack_tag 'common', media: 'all'
-    = stylesheet_pack_tag Setting.default_settings['theme'], media: 'all'
-    = javascript_pack_tag 'common', integrity: true, crossorigin: 'anonymous'
-    = javascript_pack_tag 'error', integrity: true, crossorigin: 'anonymous'
+    = javascript_pack_tag "locales", integrity: true, crossorigin: 'anonymous'
+    = render partial: 'layouts/theme', object: (@core || { pack: 'common' })
+    = render partial: 'layouts/theme', object: (@theme || { pack: 'error', flavour: 'glitch', common: { pack: 'common', flavour: 'glitch', skin: 'default' } })
   %body.error
     .dialog
       .dialog__illustration
diff --git a/app/views/layouts/mailer.html.haml b/app/views/layouts/mailer.html.haml
index 4ffe3d79a..26fb697bb 100644
--- a/app/views/layouts/mailer.html.haml
+++ b/app/views/layouts/mailer.html.haml
@@ -6,7 +6,7 @@
 
     %title/
 
-    = stylesheet_pack_tag 'mailer'
+    = stylesheet_pack_tag 'core/mailer'
   %body{ dir: locale_direction }
     %table.email-table{ cellspacing: 0, cellpadding: 0 }
       %tbody
diff --git a/app/views/layouts/modal.html.haml b/app/views/layouts/modal.html.haml
index 2ef49e413..b6e33ca91 100644
--- a/app/views/layouts/modal.html.haml
+++ b/app/views/layouts/modal.html.haml
@@ -1,6 +1,3 @@
-- content_for :header_tags do
-  = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
-
 - content_for :content do
   - if user_signed_in? && !@hide_header
     .account-header
diff --git a/app/views/layouts/public.html.haml b/app/views/layouts/public.html.haml
index d30b2a3ea..b4a21caf1 100644
--- a/app/views/layouts/public.html.haml
+++ b/app/views/layouts/public.html.haml
@@ -1,6 +1,3 @@
-- content_for :header_tags do
-  = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
-
 - content_for :content do
   .public-layout
     - unless @hide_navbar