feat(latest comments): added reply to

src/components/LatestComments.astro

@@ -75,6 +75,110 @@ const heading = lang === "zh" ? "最新评论" : "Latest comments";
         return item?.user?.name || (lang === "zh" ? "匿名用户" : "Anonymous");
     }
 
+    function normalizePath(url) {
+        if (!url) return "";
+
+        try {
+            const u = new URL(url, window.location.origin);
+            let path = u.pathname;
+
+            if (!path.startsWith("/")) path = "/" + path;
+            if (!path.endsWith("/")) path += "/";
+
+            return path;
+        } catch {
+            let path = String(url);
+
+            path = path.replace(/^https?:\/\/[^/]+/i, "");
+            if (!path.startsWith("/")) path = "/" + path;
+            if (!path.endsWith("/")) path += "/";
+
+            return path;
+        }
+    }
+
+    function buildUrlCandidates(rawUrl) {
+        const path = normalizePath(rawUrl);
+        if (!path) return [];
+
+        const noSlash = path.endsWith("/") ? path.slice(0, -1) : path;
+
+        const candidates = [
+            path,
+            noSlash,
+            `/zh${path}`,
+            `/zh${noSlash}`,
+            `/en${path}`,
+            `/en${noSlash}`,
+            `${window.location.origin}${path}`,
+            `${window.location.origin}${noSlash}`,
+        ];
+
+        return [...new Set(candidates.filter(Boolean))];
+    }
+
+    async function fetchPostComments(host, siteId, rawUrl) {
+        const candidates = buildUrlCandidates(rawUrl);
+
+        for (const candidate of candidates) {
+            try {
+                const res = await fetch(
+                    `${host}/api/v1/find?site=${encodeURIComponent(siteId)}&url=${encodeURIComponent(candidate)}&format=plain`,
+                    { credentials: "omit" },
+                );
+
+                if (!res.ok) continue;
+
+                const data = await res.json();
+
+                const comments = Array.isArray(data)
+                    ? data
+                    : Array.isArray(data?.comments)
+                      ? data.comments
+                      : [];
+
+                if (comments.length > 0) {
+                    return comments;
+                }
+            } catch {}
+        }
+
+        return [];
+    }
+
+    async function enrichReplyTargets(host, siteId, comments) {
+        const urls = [
+            ...new Set(
+                comments.map((item) => item?.locator?.url).filter(Boolean),
+            ),
+        ];
+
+        const postMap = new Map();
+
+        await Promise.all(
+            urls.map(async (url) => {
+                const postComments = await fetchPostComments(host, siteId, url);
+                postMap.set(url, postComments);
+            }),
+        );
+
+        return comments.map((item) => {
+            if (!item?.pid) {
+                return { ...item, replyToName: "" };
+            }
+
+            const postComments = postMap.get(item?.locator?.url) || [];
+            const parent = postComments.find(
+                (c) => String(c?.id) === String(item?.pid),
+            );
+
+            return {
+                ...item,
+                replyToName: parent?.user?.name || "",
+            };
+        });
+    }
+
     function renderComments(root, comments, lang) {
         const list = root.querySelector(".latest-comments-list");
         const loading = root.querySelector(".comments-loading");
@@ -90,20 +194,35 @@ const heading = lang === "zh" ? "最新评论" : "Latest comments";
 
         list.innerHTML = comments
             .map((item) => {
-                const author = escapeHtml(getUserName(item, lang));
+                const rawAuthor = getUserName(item, lang);
+                const author = escapeHtml(rawAuthor);
+                const fallbackInitial = escapeHtml(
+                    rawAuthor.slice(0, 1).toUpperCase(),
+                );
+
                 const avatar = getAvatar(item);
                 const safeAvatar = escapeHtml(avatar || "");
+
                 const title = escapeHtml(
                     item?.title ||
                         (lang === "zh" ? "未命名文章" : "Untitled post"),
                 );
                 const href = rewritePostUrl(item?.locator?.url || "", lang);
+
+                // Remark42 返回的 text 是处理后的 HTML，适合直接渲染
                 const html = item?.text || "";
                 const time = formatTime(item?.time, lang);
 
+                const replyTo = escapeHtml(item?.replyToName || "");
+                const authorLine = replyTo
+                    ? `<span class="comment-author">@${author}</span><span class="comment-reply-sep">${
+                          lang === "zh" ? "回复" : "replied to"
+                      }</span><span class="comment-reply-to">@${replyTo}</span>`
+                    : `<span class="comment-author">@${author}</span>`;
+
                 const avatarHtml = avatar
                     ? `<img class="comment-avatar-img" src="${safeAvatar}" alt="${author}" loading="lazy" referrerpolicy="no-referrer" />`
-                    : `<div class="comment-avatar-fallback" aria-hidden="true">${author.slice(0, 1).toUpperCase()}</div>`;
+                    : `<div class="comment-avatar-fallback" aria-hidden="true">${fallbackInitial}</div>`;
 
                 return `
           <article class="comment-card">
@@ -115,7 +234,7 @@ const heading = lang === "zh" ? "最新评论" : "Latest comments";
 
                 <div class="comment-meta">
                   <div class="comment-author-row">
-                    <span class="comment-author">@${author}</span>
+                    ${authorLine}
                     ${time ? `<span class="comment-time">${escapeHtml(time)}</span>` : ""}
                   </div>
                 </div>
@@ -159,7 +278,12 @@ const heading = lang === "zh" ? "最新评论" : "Latest comments";
             }
 
             const data = await res.json();
-            renderComments(section, data, lang);
+            const enriched = await enrichReplyTargets(
+                host,
+                siteId,
+                Array.isArray(data) ? data : [],
+            );
+            renderComments(section, enriched, lang);
         } catch (err) {
             loading.style.display = "none";
             list.innerHTML = `<p class="latest-comments-empty">${

src/styles/global.css

@@ -361,6 +361,20 @@ img {
   font-style: italic;
 }
 
+.comment-reply-sep {
+  font-size: 0.8rem;
+  opacity: 0.7;
+}
+
+.latest-comments .comment-reply-to {
+  font-weight: 400;
+  font-size: 0.8rem;
+  color: gray;
+  opacity: 0.9;
+  overflow-wrap: anywhere;
+  word-break: break-word;
+}
+
 html.dark .latest-comments .comment-card,
 .dark .latest-comments .comment-card {
   border-color: #7f8c97;