Category specific topic and post reactions?

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3

Perfect :slight_smile:

I have some experience with dev work in other environments, but exploring if it’s possible via a theme component.

With a little help from AI :sweat_smile: I seem to have it working, but not 100% sure if this is accurate on the way it should be achieved in Discourse:

<script type="text/discourse-plugin" version="0.1">
  api.onPageChange(() => {
    try {
      const isTopicPage = /^\/t\//.test(window.location.pathname);
      
      // Only run on topic pages
      if (!isTopicPage) return;

      const allowedCategories = ['ask-a-question']; // Use category slugs directly

      // Access the topic details to get the category slug
      const topic = Discourse.__container__.lookup("controller:topic");
      const categorySlug = topic && topic.get("model.category.slug");
      const isAllowedCategory = categorySlug && allowedCategories.includes(categorySlug);

      // Function to hide or show the specific emoji
      const toggleReactionEmoji = () => {
        const emoji = document.querySelector("[data-reaction='frog']");
        
        if (emoji) {
          emoji.style.display = isAllowedCategory ? '' : 'none';
          console.log(`Emoji with data-reaction='frog' ${isAllowedCategory ? 'shown' : 'hidden'}.`);
        }
      };

      // Initial check in case the element is already in the DOM
      toggleReactionEmoji();

      // Set up a mutation observer to hide/show emoji based on category changes
      const observer = new MutationObserver(mutations => {
        mutations.forEach(mutation => {
          mutation.addedNodes.forEach(node => {
            if (node.nodeType === 1) { // Check if it's an element node
              const emoji = node.querySelector("[data-reaction='frog']");
              if (emoji) {
                emoji.style.display = isAllowedCategory ? '' : 'none';
                console.log(`Emoji with data-reaction='frog' found in mutation and ${isAllowedCategory ? 'shown' : 'hidden'}.`);
              }
            }
          });
        });
      });

      // Observe the body for child list changes (e.g., reactions being added)
      observer.observe(document.body, { childList: true, subtree: true });

      // Clean up the observer when navigating away
      api.cleanupStream(() => observer.disconnect());

    } catch (error) {
      console.error("An error occurred in the emoji toggle script:", error);
    }
  });
</script>