{{- if isset .Site.Params "giscus" -}}
<hr style="border-top: 1px solid #EEEEEE;">
<div id="comment"></div>
<script>
    const getStoredTheme = () => localStorage.getItem("theme") === "dark" ? "dark" : "light";

    const setGiscusTheme = () => {
        const sendMessage = (message) => {
            const iframe = document.querySelector('iframe.giscus-frame');
            if (iframe) {
                iframe.contentWindow.postMessage({giscus: message}, 'https://giscus.app');
            }
        }
        sendMessage({setConfig: {theme: getStoredTheme()}})
    }

    document.addEventListener("DOMContentLoaded", () => {
        const giscusAttributes = {
            "src": "https://giscus.app/client.js",
            "data-repo": "{{ .Site.Params.giscus.repo }}",
            "data-repo-id": "{{ .Site.Params.giscus.repoID }}",
            "data-category": "{{ .Site.Params.giscus.category }}",
            "data-category-id": "{{ .Site.Params.giscus.categoryID }}",
            "data-mapping": "{{ default " pathname" .Site.Params.giscus.mapping }}",
            "data-reactions-enabled": "{{ default "1" .Site.Params.giscus.reactionsEnabled }}",
            "data-emit-metadata": "{{ default "0" .Site.Params.giscus.emitMetadata }}",
            "data-input-position": "{{ default "bottom" .Site.Params.giscus.inputPosition }}",
            "data-theme": getStoredTheme(),
            "data-lang": "{{ default "en" .Site.Params.giscus.lang }}",
            "data-loading": "{{ default "lazy" .Site.Params.giscus.loading }}",
            "crossorigin": "anonymous",
        };

        // Dynamically create script tag.
        const giscusScript = document.createElement("script");
        Object.entries(giscusAttributes).forEach(
            ([key, value]) => giscusScript.setAttribute(key, value));
        document.getElementById("comment").appendChild(giscusScript);

        // Update giscus theme when the theme switcher is clicked.
        const themeToggle = document.querySelector(".theme-toggle");
        if (themeToggle) {
            themeToggle.addEventListener("click", setGiscusTheme);
        }
    });

</script>
{{end}}