Added default theme (#960)

* feat: Added default theme

* Revert "feat: Added default theme"

This reverts commit a11a99f92a.

* feat: Add basic theme feature

* feat: Add theme settings

* fix: Fix default theme value

* fix: Fix CR and doc-string

* Comment out darkMode on exampleSite/hugo.yaml

Signed-off-by: hossainemruz <hossainemruz@gmail.com>

---------

Signed-off-by: hossainemruz <hossainemruz@gmail.com>
Co-authored-by: Emruz Hossain <hossainemruz@gmail.com>

layouts/_default/baseof.html

@@ -12,7 +12,7 @@
     <!--================= add analytics if enabled =========================-->
     {{- partial "analytics.html" . -}}
     <script>
-      theme = localStorage.getItem('darkmode:color-scheme') || 'system';
+      theme = localStorage.getItem('theme-scheme') || localStorage.getItem('darkmode:color-scheme') || 'light';
       if (theme == 'system') {
         if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
           theme = 'dark';

layouts/index.html

@@ -18,7 +18,7 @@
     <!--================= add analytics if enabled =========================-->
     {{- partial "analytics.html" . -}}
     <script>
-      theme = localStorage.getItem('darkmode:color-scheme') || 'system';
+      theme = localStorage.getItem('theme-scheme') || localStorage.getItem('darkmode:color-scheme') || 'light';
       if (theme == 'system') {
         if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
           theme = 'dark';

layouts/partials/helpers/get-esbuild-options.html

@@ -69,15 +69,26 @@ params:
         #  id: foo
         #  name: bar
     
-    # The `darkMode` feature
-    darkmode:
+    # [Deprecated] The `darkMode` feature
+    # This is a deprecated setting, but has not been removed to maintain backward compatibility
+    # If `theme` is set, the `darkMode` setting will be discarded.
+    darkMode:
       enable: true
+  
+    # The `theme` feature
+    theme:
+      enable: true
+      services:
+        light: true # enable light theme. default "true"
+        dark: true # enable dark theme. default "true"
+        default: system # can be either light, dark or system. default "system"
 
 This helper will convert the above config into the following env vars:
 
   * `FEATURE_ANALYTICS=1`
   * `FEATURE_ANALYTICS_GOOGLE=1`
   * `FEATURE_DARKMODE=1`
+  * `FEATURE_THEME=1`
 
 In JS, you can use it like this:
 

layouts/partials/navigators/navbar.html

@@ -141,7 +141,7 @@
         {{ if .IsTranslated }}
           {{ partial "navigators/lang-selector.html" . }}
         {{ end }}
-        {{ if site.Params.features.darkMode.enable }}
+        {{ if or site.Params.features.darkMode.enable site.Params.features.theme.enable }}
           {{ partial "navigators/theme-selector.html" . }}
         {{ end }}
       </ul>

layouts/partials/navigators/theme-selector.html

@@ -1,17 +1,31 @@
+{{/*  variables for enabling/disabling various features  */}}
+{{ $darkEnabled  := true }}
+{{ $lightEnabled := true }}
+{{ if site.Params.features.theme.enable }}
+  {{ $darkEnabled   = site.Params.features.theme.services.dark   | default true }}
+  {{ $lightEnabled  = site.Params.features.theme.services.light  | default true }}
+{{ end }}
+
 <li class="nav-item dropdown">
 <a class="nav-link dropdown-toggle"  href="#" id="themeSelector" role="button"
   data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
   <img id="navbar-theme-icon-svg" class="theme-icon" src="{{ "icons/moon-svgrepo-com.svg" | relURL }}" width=20 alt="Dark Theme">
 </a>
 <div id="themeMenu" class="dropdown-menu dropdown-menu-icons-only" aria-labelledby="themeSelector">
+  {{ if $lightEnabled }}
   <a class="dropdown-item nav-link" href="#" data-scheme="light">
     <img class="theme-icon" src="{{ "icons/sun-svgrepo-com.svg" | relURL }}" width=20 alt="Light Theme">
   </a>
+  {{ end }}
+  {{ if $darkEnabled }}
   <a class="dropdown-item nav-link" href="#" data-scheme="dark">
     <img class="theme-icon" src="{{ "icons/moon-svgrepo-com.svg" | relURL }}" width=20 alt="Dark Theme">
   </a>
+  {{ end }}
+  {{ if and $lightEnabled $darkEnabled }}
   <a class="dropdown-item nav-link" href="#" data-scheme="system">
     <img class="theme-icon" src="{{ "icons/computer-svgrepo-com.svg" | relURL }}" width=20 alt="System Theme">
   </a>
+  {{ end }}
 </div>
 </li>