Function fetchTopPosts

topReply.js:169–269

(forceRefresh)

    /** 清理历史：删除超过7天未更新的记录；条数超上限时再清除最旧的 */
    function pruneHistory() {
        const now = Date.now();
        const list = loadHistory();
        let kept = list.filter(p => now - (p._ts || 0) < HISTORY_TTL_MS);
        let changed = kept.length !== list.length;
        if (kept.length > HISTORY_MAX_ENTRIES) {
            kept.sort((a, b) => (b._ts || 0) - (a._ts || 0));
            kept = kept.slice(0, HISTORY_MAX_ENTRIES);
            changed = true;
        }
        if (changed) saveHistory(kept);
    }
    /** 拉取到新数据后合并进历史：同一 postId 用新数据替换老记录并重置时间戳 */
    function mergeHistory(posts) {
        if (!posts || posts.length === 0) return;
        const now = Date.now();
        const list = loadHistory();
        const map = new Map();
        list.forEach(p => { if (p.postId) map.set(p.postId, p); });
        posts.forEach(p => {
            if (!p.postId) return;
            // 新数据替换老数据，时间重新计算
            map.set(p.postId, Object.assign({}, p, { _ts: now }));
        });
        let merged = Array.from(map.values());
        // 超过上限：按更新时间从新到旧保留，清除最旧的记录
        if (merged.length > HISTORY_MAX_ENTRIES) {
            merged.sort((a, b) => (b._ts || 0) - (a._ts || 0));
            merged = merged.slice(0, HISTORY_MAX_ENTRIES);
        }
        saveHistory(merged);
    }
    /** 供外部（统计功能）读取历史数据（已过滤7天前的过期记录） */
    function getHistory() {
        const now = Date.now();
        return loadHistory().filter(p => now - (p._ts || 0) < HISTORY_TTL_MS);
    }

    // 脚本启动时清理过期和超上限的历史记录
    pruneHistory();
    // 暴露读取接口供外部统计使用：window.getTopReplyHistory() 返回历史全部帖子数据
    window.getTopReplyHistory = getHistory;

    // 从帖子 URL 中提取数字 ID，如 /post-512810-1 返回 512810
    function extractPostId(url) {
        const m = url.match(/post-(\d+)/);
        return m ? parseInt(m[1], 10) : 0;
    }

    // ---- 拉取 & 解析 ----
    function parsePostFromItem(item) {
        const titleEl = item.querySelector('.post-title a');
        if (!titleEl) return null;
        const title = titleEl.textContent.trim();
        const url = titleEl.getAttribute('href') || '';

        const authorEl = item.querySelector('.info-author a');
        const author = authorEl ? authorEl.textContent.trim() : '';