79 lines
2.2 KiB
JavaScript
79 lines
2.2 KiB
JavaScript
let commentsLoaded = false;
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const details = document.getElementById("comments-container");
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details.addEventListener("toggle", (even) => {
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if (details.open && !commentsLoaded) {
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fetchComments().then(() => {
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commentsLoaded = true;
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});
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}
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});
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async function fetchComments() {
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const res = await fetch(`/comments?id=${articlePermalink}`);
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const comments = await res.json();
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const rootId = new URL(`https://${articleDomain}${articlePermalink}`);
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const [tree, _] = buildCommentsTree(comments, rootId);
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const html = renderCommentList(tree);
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document.getElementById("comments-container").innerHTML += html;
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}
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function buildCommentsTree(comments, parent) {
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console.log(`Building tree for ${parent}`);
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let [children, rem] = partition(comments, it => {
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const inReplyTo = new URL(it.inReplyTo);
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return inReplyTo.hostname === parent.hostname && inReplyTo.pathname === parent.pathname;
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});
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for (const child of children) {
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const [subChildren, subRem] = buildCommentsTree(rem, new URL(child.id));
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rem = subRem;
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child.children = subChildren;
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}
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return [children, rem]
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}
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function partition(array, fn) {
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const trueArr = [];
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const falseArr = [];
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for (const el of array) {
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(fn(el) ? trueArr : falseArr).push(el);
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}
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return [trueArr, falseArr];
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}
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function renderCommentList(comments) {
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const rendered = comments.map(renderComment).join("\n");
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return `<ul class="comments-list">` + rendered + `</ul>`;
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}
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function renderComment(comment) {
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const formattedDate = new Date(comment.published).toLocaleString("en-us", {
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month: "short",
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day: "numeric",
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year: "numeric",
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hour: "numeric",
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minute: "numeric"
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});
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let children;
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if (comment.children.length > 0) {
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children = `<div class="comment-children">${renderCommentList(comment.children)}</div>`;
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} else {
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children = "";
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}
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return `
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<div class="comment">
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<img class="comment-user-avatar" src="${comment.author.icon}">
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<div class="comment-main">
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<p class="comment-info">
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<a class="comment-user-name" href="${comment.author.id}">${comment.author.name}</a>
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on
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<a class="comment-date" href="${comment.id}">${formattedDate}</a>
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</p>
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<div class="comment-body">
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${comment.content}
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</div>
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${children}
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</div>
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</div>
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`;
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}
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