fix: when toggling day/night mode, also toggle code highlighting theme

Fix case where code highlighting can be difficult to read after night
mode is toggled by user as the highlight theme remained unchanged.

assets/js/academic.js

@@ -274,12 +274,16 @@
     if ($('body').hasClass('dark')) {
       $('body').css({opacity: 0, visibility: 'visible'}).animate({opacity: 1}, 500);
       $('body').removeClass('dark');
+      $('link[title=hl-light]')[0].disabled = false;
+      $('link[title=hl-dark]')[0].disabled = true;
       $('.js-dark-toggle i').removeClass('fa-sun');
       $('.js-dark-toggle i').addClass('fa-moon');
       localStorage.setItem('dark_mode', '0');
     } else {
       $('body').css({opacity: 0, visibility: 'visible'}).animate({opacity: 1}, 500);
       $('body').addClass('dark');
+      $('link[title=hl-light]')[0].disabled = true;
+      $('link[title=hl-dark]')[0].disabled = false;
       $('.js-dark-toggle i').removeClass('fa-moon');
       $('.js-dark-toggle i').addClass('fa-sun');
       localStorage.setItem('dark_mode', '1');
@@ -299,10 +303,14 @@
     let dark_mode = parseInt(localStorage.getItem('dark_mode') || default_mode);
     if (dark_mode) {
       $('body').addClass('dark');
+      $('link[title=hl-light]')[0].disabled = true;
+      $('link[title=hl-dark]')[0].disabled = false;
       $('.js-dark-toggle i').removeClass('fa-moon');
       $('.js-dark-toggle i').addClass('fa-sun');
     } else {
       $('body').removeClass('dark');
+      $('link[title=hl-light]')[0].disabled = false;
+      $('link[title=hl-dark]')[0].disabled = true;
       $('.js-dark-toggle i').removeClass('fa-sun');
       $('.js-dark-toggle i').addClass('fa-moon');
     }

layouts/partials/header.html

@@ -77,9 +77,11 @@
         {{ printf "<link rel=\"stylesheet\" href=\"%s\" crossorigin=\"anonymous\">" (printf $css.highlight.url $css.highlight.version .) | safeHTML }}
       {{ else }}
         {{ if eq ($scr.Get "light") true }}
-          {{ printf "<link rel=\"stylesheet\" href=\"%s\" crossorigin=\"anonymous\">" (printf $css.highlight.url $css.highlight.version "github") | safeHTML }}
+          {{ printf "<link rel=\"stylesheet\" href=\"%s\" crossorigin=\"anonymous\" title=\"hl-light\">" (printf $css.highlight.url $css.highlight.version "github") | safeHTML }}
+          {{ printf "<link rel=\"stylesheet\" href=\"%s\" crossorigin=\"anonymous\" title=\"hl-dark\" disabled>" (printf $css.highlight.url $css.highlight.version "dracula") | safeHTML }}
         {{ else }}
-          {{ printf "<link rel=\"stylesheet\" href=\"%s\" crossorigin=\"anonymous\">" (printf $css.highlight.url $css.highlight.version "dracula") | safeHTML }}
+          {{ printf "<link rel=\"stylesheet\" href=\"%s\" crossorigin=\"anonymous\" title=\"hl-light\" disabled>" (printf $css.highlight.url $css.highlight.version "github") | safeHTML }}
+          {{ printf "<link rel=\"stylesheet\" href=\"%s\" crossorigin=\"anonymous\" title=\"hl-dark\">" (printf $css.highlight.url $css.highlight.version "dracula") | safeHTML }}
         {{ end }}
       {{ end }}
     {{ end }}